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36results about How to "Accurately produced" patented technology

Wireless control system of simulator signal source

InactiveCN105809925AStable and reliable wireless transmissionAccurately producedTransmission systemsHardware structureWireless control
The invention relates to a wireless control system for a simulator signal source, which belongs to the technical field of underwater target characteristic simulation; the hardware structure of the invention is divided into an upper computer end and a lower computer end, and the upper computer end is compiled and controlled by an Android platform. The Bluetooth module transmits the test signal parameters and control instructions to the FPGA development board of the lower computer in a wireless manner. After a series of decoding operations, the simulated underwater acoustic signal is sent out to complete the signal generation control process. The lower computer collects the output signal and undergoes signal detection. , then compare the parameters with the initial signal, send the self-calibration result back to the upper computer, verify the reliability and accuracy of the signal source control system, and complete the signal self-calibration control process; the upper computer of the present invention has an open environment, and the lower computer The terminal contains a variety of signal processing functions. The signal interaction between the two uses Bluetooth communication technology, which has low power consumption, low cost, and is easy to operate. It can stably and reliably transmit signal parameters and control instructions wirelessly.
Owner:中国人民解放军91388部队

Laboratory solitary wave automatic generation device

The invention provides a laboratory solitary wave automatic generation device, and the device comprises a laboratory water tank and a solitary wave generation device. The device is characterized in that the device comprises a water storage tank, a water tank sealing baffle plate and a lifting device thereof, a reflection baffle plate and a lifting device thereof, a water level controller and a water injection device; the water storage tank is arranged at one end in a laboratory water tank, and an opening of the water storage tank faces the other end of the laboratory water tank; the water tanksealing baffle is arranged on the opening of the water storage tank, and the reflection baffle plate is arranged in the laboratory water tank, parallel to the water tank sealing baffle and adjustablein distance. The water storage tank and the laboratory water tank are respectively provided with a water level controller, control signal output ends of the water level controllers are connected to the water injection device, and water outlets of the water injection device are respectively arranged in the water storage tank and the laboratory water tank. Generation and propagation of solitary waves with large simulated wave height and water depth ratio are realized in a test water tank in a water body collapse form, the repeatability is good, and the operation and the use are convenient.
Owner:OCEAN UNIV OF CHINA

Method of attaching an end seal to manufactured seeds

A method of attaching an end seal to a manufactured seed is provided. The method includes providing a manufactured seed having an open end and inflating a sealing material to form an enclosure having an interior surface. The method also includes placing the enclosure into contact with the open end of the manufactured seed and attaching the enclosure to the manufactured seed to seal the open end of the manufactured seed.
Owner:WEYERHAEUSER NR CO

High-efficiency power modulators

The present invention, generally speaking, incorporates the power amplifier as a fundamental constituent of a modulator, using polar modulation techniques. Thus, it is possible to achieve the combination of precision signal generation (including envelope variations) along with high energy efficiency in combinations not possible heretofore. In accordance with one embodiment of the invention, a modulated radio (passband) signal generator produces high quality signals of general type, which specifically includes signals with varying envelopes. Signals are generated with high energy efficiency in the conversion of applied DC power to output RF signal power. The result is longer battery life for products such as mobile phone handsets. Dramatically improved efficiency also allows for a dramatic reduction (10 to 1 or greater) in the size of any required heatsink for the radio transmitter, which significantly lowers both cost and size. Furthermore, continuous operation of these radio transmitters is made possible with small temperature rises using small heatsinks, or even without any heatsink components. This provides for high operating reliability, as well as for greater throughput due to the longer operating time allowed. Another aspect of the invention allows the generation of high quality signals with wide bandwidth, without the need for continuous feedback during operation. This further reduces costs by greatly simplifying the design, manufacturing, and complexity of the transmitter circuitry.
Owner:PANASONIC CORP

Negative radiation-sensitive resin composition

It is an object of the present invention to provide a process capable of precisely producing a plated shaped article of a large thickness such as a bump or a wiring, a negative radiation-sensitive resin composition which is preferably used for the process and has excellent sensitivity and resolution, and a transfer film using the composition. The above object is achieved by a negative radiation-sensitive resin composition comprising (A) a polymer containing structural units represented by the following formula (1) and / or the following formula (2), (B) a compound having at least one ethylenically unsaturated double bond and (C) a radiation-sensitive radical polymerization initiator, and by forming a negative radiation-sensitive resin film using the composition.
Owner:JSR CORPORATIOON

Method of generating Mathieu beam based on film amplitude modulation and cone mirror phase modulation

A method of generating a Mathieu beam based on film amplitude modulation and cone mirror phase modulation is a method for accurately and efficiently generating a cluster of non-diffracting Mathieu beams. The method is based on the definition of the angular Mathieu function. Firstly, the grayscale image of the amplitude distribution with the angular Mathieu function distribution is constructed. Then, the grayscale image is subjected to black and white color inversion, and is printed on a high-resolution film by a film output instrument. After exposure of the printed film, an amplitude modulatedfilm with the angular Mathieu function distribution is obtained. The produced film is placed close to the entrance pupil surface of a cone mirror, incident parallel beams are modulated in terms of amplitude and phase via the film and the cone mirror respectively, and then the Mathieu beam is generated after the cone mirror. The experimental device of the invention has simple structure and can easily and accurately generate the Mathieu beam.
Owner:ZHEJIANG NORMAL UNIVERSITY

A laboratory solitary wave automatic generation device

The invention provides a laboratory solitary wave automatic generation device, and the device comprises a laboratory water tank and a solitary wave generation device. The device is characterized in that the device comprises a water storage tank, a water tank sealing baffle plate and a lifting device thereof, a reflection baffle plate and a lifting device thereof, a water level controller and a water injection device; the water storage tank is arranged at one end in a laboratory water tank, and an opening of the water storage tank faces the other end of the laboratory water tank; the water tanksealing baffle is arranged on the opening of the water storage tank, and the reflection baffle plate is arranged in the laboratory water tank, parallel to the water tank sealing baffle and adjustablein distance. The water storage tank and the laboratory water tank are respectively provided with a water level controller, control signal output ends of the water level controllers are connected to the water injection device, and water outlets of the water injection device are respectively arranged in the water storage tank and the laboratory water tank. Generation and propagation of solitary waves with large simulated wave height and water depth ratio are realized in a test water tank in a water body collapse form, the repeatability is good, and the operation and the use are convenient.
Owner:OCEAN UNIV OF CHINA

High-efficiency power modulators

The present invention, generally speaking, incorporates the power amplifier as a fundamental constituent of a modulator, using polar modulation techniques. Thus, it is possible to achieve the combination of precision signal generation (including envelope variations) along with high energy efficiency in combinations not possible heretofore. In accordance with one embodiment of the invention, a modulated radio (passband) signal generator produces high quality signals of general type, which specifically includes signals with varying envelopes. Signals are generated with high energy efficiency in the conversion of applied DC power to output RF signal power. The result is longer battery life for products such as mobile phone handsets. Dramatically improved efficiency also allows for a dramatic reduction (10 to 1 or greater) in the size of any required heatsink for the radio transmitter, which significantly lowers both cost and size. Furthermore, continuous operation of these radio transmitters is made possible with small temperature rises using small heatsinks, or even without any heatsink components. This provides for high operating reliability, as well as for greater throughput due to the longer operating time allowed. Another aspect of the invention allows the generation of high quality signals with wide bandwidth, without the need for continuous feedback during operation. This further reduces costs by greatly simplifying the design, manufacturing, and complexity of the transmitter circuitry.
Owner:PANASONIC CORP

Clamp-like movement delayed circuit with output signal repeat sycle different from input signal

A delay circuit has a first delay line propagating an input pulse from stage to stage in one direction, a second delay line propagating the previous input pulse from stage to stage in the opposite direction and a comparator operative compare output potential levels of the stages incorporated in the first delay line with output potential levels of the stages incorporated in the second delay line so as to determine if any pair of output potentials are consistent in logic level with one another; when the output potentials are consistent with one another, an output timing signal is produced, and the pulse repetition period of the output timing signal is exactly half as long as that of the input pulse signal.
Owner:RENESAS ELECTRONICS CORP

Wave shape controllable wave-making pool

The invention provides a wave shape controllable wave-making pool. The wave shape controllable wave-making pool comprises a wave-making pool assembly, a power source and a control center; the wave-making pool assembly comprises a pool, a secondary flow-dividing gate, a primary flow-dividing gate, a steady flow gate and a flashboard assembly. The steady flow gate, the primary flow-dividing gate and the secondary flow-dividing gate are arranged from a water inlet to a water outlet. The primary flow-dividing gate and the secondary flow-dividing gate are provided with the flashboard assembly, and the primary flow-dividing gate communicates with the secondary flow-dividing gate in a guiding mode by the flashboard assembly; the power source is in communication with the water inlet; and the control center is used for controlling the flashboard assembly and the power source. The opening of a flashboard and a regulating valve can be controlled to accurately generate the wave same as a numerical simulation wave model, and support is provided for the study of ocean wave energy.
Owner:JIANGSU UNIV
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