42results about How to "Increase sound energy" patented technology

A microfluidic pump driven by thermoacoustic effect is mainly composed of a thermoacoustic device, a fluid-storing tank, and at least one microchannel, etc., wherein the thermoacoustic device may convert thermal energy into acoustic energy. Pressure fluctuation and velocity fluctuation with high frequency are generated by the acoustic wave. According to the high amplitude pressure fluctuation, the microfluid with high moving velocity emitted through microchannels. Since there is no movable part arranged in the thermo-acoustic generator. In the meantime, it indirectly drives the working fluid located in the fluid-storing tank by the manner of indirect contact. So the present invention may be applied in the non-conductive fluid so as to greatly extend its field of application. Moreover, the characteristics of the fluid won't be influenced by the heating process as well. The present invention is indeed a microfluid-driving device that has inventiveness and high application value.

A system and method of cleaning a substrate includes a megasonic chamber that includes a transducer and a substrate. The transducer is being oriented toward the substrate. A variable distance d separates the transducer and the substrate. The system also includes a dynamically adjustable RF generator that has an output coupled to the transducer.

Disclosed is an improved water treatment apparatus. The treatment apparatus is pressurized and operates on a continuous flow of fluids which are subjected to hydrodynamic waves, acoustic ultrasonic waves in combination with injected ozone. The treatment tank includes a tangential inlet that induces a rotating flow into the tank thereby increasing the mixing of the ozone within the effluent. The ozonated fluid is further electro chemically treated with DC current. The treatment tank provides a cost efficient and environmentally friendly process and apparatus for cleaning and recycling fluids as contaminated as frac water, used to stimulate gas production from shale formations, as well as other types of fluids having various levels of contaminants such as aerobic and anaerobic bacteria and suspended solids. The calcium carbonate scaling tendency is reduced to an acceptable level without the use of acids, ion exchange materials, or anti scaling chemicals which is of economical and environmental significance and benefit. The treatment apparatus is modular in construction and compact in overall configuration. The modular design makes the treatment apparatus easy to install, maintain, repair, replace and transport. The treatment apparatus and associated equipment is sized and configured to be mounted within a truck trailer body.

A system and method of providing RF to a transducer includes an oscillator, an RF generator, and a voltage phase detector. The oscillator has a frequency control input and an RF signal output. The RF generator has an input coupled to the oscillator RF signal output and an RF generator output coupled to the transducer. The voltage phase detector includes a first phase input coupled to the RF signal output of the oscillator, a second phase input coupled to the RF generator output, and a frequency control signal output coupled to the oscillator frequency control voltage input.

In the case of letters of the alphabet such as "M and N" and "B and P", which are difficult to distinguish, recording of words consisting of a sequence of letters of the alphabet is effected in a word dictionary in a condition in which, in accordance with alphabetic input system information that is specified for each user, one of these letters of the alphabet is repeated twice, with the addition of "dot" before the letter in question. For example, the device is arranged to record in associated fashion the characteristic quantities of the time sequence corresponding to the word "PAM" and "dot PP dot A dot M". When the user performs voice input "PAM", this can be effected by uttering "dot PP dot A dot M", in accordance with the alphabetic input system information of the user in question. Voice recognition of this voice data is performed using the word dictionary corresponding to this alphabetic input system information of the user in question.

Disclosed is an improved water treatment process that operates on a continuous flow of fluids that are subjected to hydrodynamic waves, acoustic ultrasonic waves in combination with injected ozone and electro chemical treatment. The treatment system provides a cost efficient and environmentally friendly process and apparatus for cleaning and recycling fluids as contaminated as frac water, used to stimulate gas production from shale formations, as well as other types of fluids having various levels of contaminants such as aerobic and anaerobic bacteria and suspended solids. The calcium carbonate scaling tendency is reduced to an acceptable level without the use of acids, ion exchange materials, or anti scaling chemicals which is of economical and environmental significance and benefit.

The invention relates to a portable pulse sound generator, which includes a battery, a battery charging module, a power management module, a high-voltage electromagnetic switch, a wireless remote controller, a wired switch, a low-voltage electric conversion module, a high-voltage energy storage capacitor, and a polarized magnetic medium. The discharge body; the high-voltage electromagnetic switch controls the conduction between the high-voltage energy storage capacitor and the polarized magnetic medium discharge body; the high-voltage energy storage capacitor stores a high voltage of 5000V, and the polarized magnetic medium discharge body consists of two polarized magnets to form a high-voltage discharge . The invention utilizes high-voltage energy storage to form a discharge on a polarized magnetic medium to generate pulsed sound, which is safe and has high sound energy, and the maximum sound energy can reach 150dB.

The invention discloses an on-line measurement method for frequency-sweeping ultrasonic focusing type sediment particle size distribution. The present invention builds a set of measuring devices with a focused ultrasonic probe as the core, and at the same time uses the screening method and microscope method to configure sediment samples of different particle sizes; debugs the measuring system, and starts the measuring device after it is accurate; changes the ultrasonic wave Frequency, a series of experiments with sediment particle size as a variable were carried out at different ultrasonic frequencies to obtain the data of the received waveform; phase space segmentation and symbol dynamic filtering based on the Hilbert transform were performed on the collected signals to obtain the same Measurement of parameter values ​​related to particle size; data fitting is performed on the scatter diagrams of measurement and sediment particle size at different frequencies to obtain a sediment particle size measurement model. The invention can effectively reduce the scattering attenuation in the propagation process, increase the acceptable sound energy at the receiving transducer, improve the signal-to-noise ratio, and the sensitivity and measurement accuracy of the entire measurement system.

The invention discloses a coupled resonance surface acoustic wave microfluidic chip and a manufacturing method thereof, belonging to the technical field of microfluidic chips. The chip of the present invention includes a piezoelectric substrate, an interdigital transducer and a cavity top cover, a side wall is arranged between the piezoelectric substrate and the cavity top cover, and the piezoelectric substrate, the cavity top cover and the side wall enclose a fluid Mouth. The method of the present invention is as follows: select the material of the cavity top cover according to the piezoelectric substrate, then determine the thickness of the cavity top cover according to the working frequency and make the cavity top cover; calculate the fluid channel according to the piezoelectric substrate and the fluid in the fluid channel The cross-sectional width and cross-sectional height are selected, and the material of the side wall is selected according to the fluid in the fluid channel and the piezoelectric substrate to make the side wall; then the chip is manufactured according to the piezoelectric substrate, the cavity top cover and the side wall. The purpose of the present invention is to overcome the disadvantage of low energy of the surface acoustic wave microfluidic device in the prior art, and the present invention can improve the energy efficiency of the surface acoustic wave microfluidic chip.