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

Disclosed is a high-efficiency air filter scanning leak-detection device and method. The high-efficiency air filter scanning leak-detection device comprises an air duct system, an air flow conversion device, a detection platform, a two-dimensional scanning mechanism, a detection system and a control system. According to the high-efficiency air filter scanning leak-detection device and method, leak points can be accurately and rapidly positioned, the distribution of the leak points are timely displayed through a three-dimensional graph, and the standard requirements are met.

The invention discloses a multi-beam scatter communication device and a multi-beam scatter communication method, and relates to scatter communication antenna rapid alignment and multi-node centerless ad-hoc network technologies in the communication field. The communication device comprises a GPS (global positioning system), a monitoring unit, an indoor unit and an outdoor unit, wherein the indoor unit realizes modulation-demodulation for scattering signals and control for a centerless ad-hoc network protocol, provides a self-organizing and self-healing network function for nodes, and carries out information transmission. The communication method adopts a mode of sector beam switching, can automatically realize the whole process of antenna alignment, link establishment and information transmission of a scatter communication link, and has the remarkable characteristics of simple operation and convenient use. The method disclosed by the invention not only can support point-to-point communication and point-to-multipoint communication, but also can support centerless ad-hoc network communication among the multiple nodes, has high self-organizing, self-healing and anti-interference abilities, and is extremely applicable to medium/short-range small-capacity scatter communication.

The invention, which belongs to the infrared detector field, particularly relates to a near infrared photoelectric detector with enhancement based on utilization of indium tin oxide nanoparticles. The near infrared photoelectric detector successively comprises transparent glass (1) with high infrared transmissivity, a transparent electrode (2), a photoelectric conversion material (3), indium tin oxide nanoparticles (4), and a back electrode (5) from top to bottom. After incident infrared radiation passes through the transparent glass (1), the transparent electrode (2), and the photoelectric conversion material (3), a portion of the infrared radiation is localized at the surfaces of the indium tin oxide nanoparticles (4), scattering is generated and a surface plasma polariton transmission mode is formed, so that an effective transmission distance of the incident electromagnetic wave in the photoelectric conversion material (3) can be increased. According to the invention, the near infrared photoelectric detector with enhancement based on utilization of indium tin oxide nanoparticles has advantages of diversity of a preparation technology, low manufacturing cost, adjustable enhancement resonant position and high sensitivity and the like.

The invention relates to the technical field of devices for transmitting information while drilling of petroleum and natural gas drilling engineering, in particular to an information while drilling sound wave transmission relay transmitting device. The information while drilling sound wave transmission relay transmitting device comprises a transducer connector, a sound wave receiving connector, a sound wave receiving sensor, an instrument cabin body, an instrument cabin sealing assembly, an underground power module, an underground circuit module and a sound wave transducer assembly. The sound wave receiving connector is fixedly installed at the lower portion of the transducer connector. The information while drilling sound wave transmission relay transmitting device is reasonable and compact in structure and convenient to use, receives a sound wave signal transmitted by a lower-portion drill column through the sound wave receiving sensor, converts the sound wave signal into an electrical signal and transmits the electrical signal to the underground circuit module, and the electrical signal is disposed by the underground circuit module and then transmitted to the sound wave transducer assembly. The information while drilling sound wave transmission relay transmitting device can greatly increase an effective transmission distance of the sound wave signal, accordingly reduces drilling risk, improves the well drilling benefit and has the advantages of being good in overall strength, flexible in use, good in adaptability and accurate and quick in transmission.

The invention discloses an ultrasonic flow measuring device, which comprises a fluid tube and upstream and downstream ultrasonic transducers which are arranged on an inner tube wall of the fluid tube at a certain interval L and oppositely arranged in a way of being vertical to the tube wall, wherein a reflection block is arranged in front of each ultrasonic transducer; the reflection surface of the upstream reflection block is at an upstream included angle theta of 35 to 43 degrees to the inflow direction of fluid, the reflection surface of the downstream reflection block is at a downstream included angle theta of 35 to 43 degrees to the outflow direction of the fluid, and the upstream included angle theta is equal to the downstream included angle theta; the interval L is approximately equal to (r-dsin upstream theta)/tg(90DEG-2downstream theta); and in the formula, r is the inner diameter of the fluid tube, and d is the central line length of the reflection surface of the reflection block in the flowing direction of the fluid. In the ultrasonic flow measuring device, the reflection surface of the reflection block is an inclined surface of 35 to 43 degrees, and the reflection surface of the reflection block prolongs the effective distance L of the transmission of ultrasonic waves, so that measuring precision is improved. Meanwhile, both the reflection block and the ultrasonic transducers are arranged on the tube wall and the flow area of the fluid is large, so that the ultrasonic flow measuring device of the invention is difficult to block in sites with impurities. Thus, the ultrasonic flow measuring device is particularly suitable for measuring the flow of the fluid which flows slowly in a small-diameter tube.

The invention discloses a cross-medium equipment-independent and discrete modulation continuous variable quantum key distribution system. An eight-state quantum state is prepared by a trusted intermediate party through discrete modulation, the eight-state quantum state is sent to Alice and Bob after photon subtraction, Alice and Bob perform demodulation and homodyne detection on the received quantum state respectively, and a security key is established within an effective distance. According to the invention, a continuous variable quantum key distribution technology in a free space is improved, and the quantum state is prepared and sent by the trusted intermediate party, so that the system has equipment independence, and the communication security is ensured; the photon subtraction operation can improve the entanglement degree between the quanta so as to improve the transmission distance; the homodyne detection can effectively filter the interference of the outside on the optical signal, and the detection result can be well obtained even if the optical signal is influenced to a certain extent. The scheme is oriented to equipment independence under an air-water channel, discrete modulation continuous variable quantum key distribution is utilized, and more practicability is brought to free space communication of quanta.

The invention discloses a control method based on a TWS (true wireless stereo) earphone. The control method comprises the following steps: sending wake-up voice information to a main control terminalin communication connection with the TWS earphone; receiving wake-up feedback information sent by the main control terminal; and when the wake-up feedback information is a mode switching instruction,starting a far-field control mode and collecting control voice information, and sending the control voice information to the main control terminal, so that the main control terminal controls target equipment according to the control voice information. The invention further discloses a control system, device and equipment based on the TWS earphone. According to the invention, the target equipment is controlled through cooperation of the TWS earphone and the main control device, the limitation of voice control is reduced, the application range of voice control is broadened, and the voice controlarea is increased.

The invention provides a wireless power transmission system for high voltage on-line monitoring devices and a configuration method. The system includes an induction energy acquisition module, an energy storage module, a transmitter power conversion module, a source coil, multiple embedded relay structures, multiple load coils, multiple receiver power conversion modules and multiple high voltage online monitoring devices. The method includes the following steps: measuring the self-inductances of the source coil and relay coils through an LCR measurement method; calculating the mutual inductances and coupling coefficients between the relay coils of the embedded relay structures, calculating the mutual inductances and coupling coefficients between a transmitting coil and the relay coils of the embedded relay structures, and solving the relay coil splitting frequency of the embedded relay structures; calculating the resonant capacitance values matching the relay coils and the resonant capacitance value matching the source coil; and judging whether configuration is completed according to the splitting frequency. The effective transmission distance is improved, and the interference of external environmental factors and the cross-coupling effect between multiple loads are reduced. The system is suitable for dynamic loads.

The invention belongs to the technical field of drilling engineering, and particularly relates to a magnetic coupling energy-carrying reverse communication method for underground measurement while drilling, which is characterized by comprising the following steps of: 1, driving a drill bit to rotate by a generator short section; 2, expoloring measurement signals of a geological parameter sensor and sending the signals to the main control circuit short section through a wireless magnetic coupling communication and energy carrying device; The engineering parameter sensor transmits a measurementsignal to the wireless receiving short section through the wireless magnetic coupling communication device; And step 3, enabling the wireless receiving short section to carry out signal amplification,filter and perform demodulation processing and upload the processed signals to a ground system. Electromagnetic induction principle is utilized;, Wireless non-contact communication is achieved in a wireless magnetic coupling communication mode, the wireless magnetic communication process is superposed, synchronous transmission of electric energy and information of a common coupling mechanism is achieved, the problems that a communication carrier is prone to structural damage, poor in reliability, short in service life and the like due to underground high temperature, strong corrosion and sealing requirements are solved, and the data transmission reliability is improved.

The invention provides a signal guarantee processing method and device, equipment and a storage medium, and the method comprises the steps: detecting the antenna sensitivity of wireless equipment after the wireless equipment enters a connection state; when the antenna sensitivity is lower than a set threshold value, amplifying a transmission signal of the wireless device to obtain an amplified transmission signal; and obtaining a trigger instruction generated by triggering a key displayed by the wireless device by an operation medium, and after the trigger instruction is obtained, carrying out optimization processing on the amplified transmission signal. When it is detected that the antenna sensitivity is lower than a set threshold value, the transmission signal of the wireless device is amplified; the strength of the transmission signal is increased to increase the effective transmission distance of the transmission signal, after the trigger instruction generated by triggering the wireless device key by the user is obtained, the amplified transmission signal is optimized, the communication quality of the wireless device is further improved, and the long-distance communication quality of the wireless device can be effectively ensured.

The invention relates to an anti-interference wiring method of the circuit design of wireless sensing node equipment in particular to a circuit board wiring method of 2.4G ultrahigh-frequency equipment, belonging to a wiring arrangement method of the circuit design A closed-loop shape is not available to both the whole wiring and the partial wiring. The wiring shape is a wiring track shape on a monolayer plate or a wiring track shape formed by connecting projection views of a multilayer plate. Thus, the invention can avoid the induction interference caused by a closed loop, effectively improve the capability of ultrahigh-frequency wireless sensing network node equipment to resist interference from the internal and external environments of an integrated circuit, increase the effective transmission distance and prolong the service life of the integrated circuit.

The present invention provides a digital signal converting device which is suitable for wireless communication, wireless medium playing, wireless information transmission, wireless electrical appliance and the like product, for an example: the device can be applied in the wireless indoor call phone for converting and receiving and transmitting the bluetooth signal and the communication protocol signal of the digital European cordless telephone (DECT) to facilitate that the bluetooth signal with shorter standard transmission distance (the effective transmission distance is about in 10 meters) can be conveyed to the digital European cordless telephone signal with longer transmission distance (the effective distance is about 200 meters to 300 meters, and is even longer than 300 meters).

The invention relates to an intelligent infusion monitoring system and an intelligent infusion monitoring method on the basis of an internet of things. The intelligent infusion monitoring system is characterized in that an infusion monitor is connected with a relay station, the relay station is connected with a work station, the work station is provided with a wireless receiver and a work station computer, the relay station is connected with the wireless receiver in the work station, the wireless receiver is connected with the work station computer, and a special patient infusion information web address is set in the work station computer. The intelligent infusion monitoring system and the intelligent infusion monitoring method have the advantages that shortcomings of data errors, data loss, influence on medical staff during judgment, huge potential safety hazards and the like due to the fact that wireless signals cannot be normally operated in large inpatient areas in the prior art are overcome; data acknowledge is implemented by the relay station structure added into the wireless internet of things, the effective wireless signal transmission distance can be prolonged, and service requirements of large hospitals can be met; the data identification rate is effectively increased, data loss is reduced, information of patients can be inquired via the internet, waste of normal working time of family members of the patients is prevented, and the family members can remotely accompany and attend to the patients.

The invention discloses a street lamp charging pile network monitoring system. The street lamp charging pile network monitoring system solves the problems that information sharing is inconvenient in an existing device, grooving wiring is inconvenient and dispersed street lamp charging piles are not suitable for short distance networking. The street lamp charging pile network monitoring system comprises a central level monitoring system, a plurality of station level monitoring systems and a plurality of substations; the central level monitoring system is used for simultaneously monitoring status information of the station level monitoring systems; the station level monitoring systems are used for simultaneously monitoring the states of the substations; and the substations are used for completing basic work of street lamp charging piles. Layer management of the two-layer network structure is adopted, independent management and information sharing both exist in stations, expanding and promoting are convenient, the application of fiber optical transceivers extends the effective transmission distance of a network, a wireless local area network reduces the cost of urban road distributionlines, the charging status is monitored through the network in real time, an operator manages and maintains a charging device conveniently, and a user checks and uses the street lamp charging piles conveniently.

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 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.

The invention provides a transmission method and device of a channel detection signal. The method comprises the following steps: receiving configuration information issued by a network side, wherein the configuration information comprises a first frequency pattern in a resource block level, and the first frequency domain pattern indicates a resource block for transmitting the channel detection signal in the system bandwidth; and sending the channel detection signal by use of the resource block indicated by the first frequency domain pattern. The method and device provided by the invention can improve the transmission range of the channel detection signal.

The invention discloses an electric vehicle low-speed driving prompt tone and tire pressure detection integrated device and method. The device comprises a power supply module, a CAN module, a main control module, a storage module, a tire pressure detection module and a display module, wherein the main control module is respectively connected with the power supply module and the CAN module, the power supply module is connected with a power supply of the electric vehicle through an external interface, the CAN module is connected with a CAN bus of the electric vehicle through an external interface, and the storage module, the tire pressure detection module and the display module are all connected with the main control module; the device has the advantages that low-speed driving sound and tirepressure detection are integrated, the research and development cost is reduced, the occupied space in a vehicle is small, and resource waste is reduced.