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50 results about "Isolated system" patented technology

In physical science, an isolated system is either of the following...

Method for controlling torsion of base isolation structure

The invention provides a method for controlling torsion of a base isolation structure. A displacement ratio, a ratio of a torsion component to a translational motion component and a torsion shearing force ratio are taken as torsional effect indexes, torsional effect index values are acquired and adjusted to accord with limit values, and accordingly, torsion of the base isolation structure of a complicated and irregular system is controlled. The method specifically comprises steps as follows: a three-dimensional finite element model of an irregular to-be-isolated system is established, isolation support parameters are determined in combination of a limiting value of the offset distance between the center of rigidity and the center of mass of an isolation layer, an isolation structure model is established, the torsional effect index values are extracted, whether the torsional effect index values meet the requirements of limit values is judged, a corresponding technical route is adopted according to the ultralimit condition, and finally, the torsional effect index values can all meet the requirements. According to the method, as for the complicated and irregular isolation structure, an effective torsion effect index and a specific implementation method are provided quantitatively, quantitative standards and specific operation standards are provided for an isolation technology for controlling torsion of the structure, and larger application and promotion values are provided.
Owner:CHINA AVIATION PLANNING & DESIGN INST GRP

Two-machine hot standby switching circuit

The invention discloses a two-machine hot standby switching circuit. The two-machine hot standby switching circuit comprises an isolating circuit, a switching interlocking circuit and an active / standby indicating circuit, wherein the switching interlocking circuit comprises two relays, each relay comprises three contact switches, one of the three switches is normally closed and the other two of the three switches are normally open. Isolated system A active striving signals are connected to a first end of a coil of a system A relay through the normally closed switch of a system B relay, and a second end of the coil of the system A relay is connected with a system A control power supply; isolated system B active striving signals are connected to a first end of a coil of the system B relay through the normally closed switch of the system A relay, and the second end of the coil of the system B relay is connected with a system B control power supply; system A active / standby indicating signals are output to a system A and a system B and system B active / standby indicating signals are output to the system A and the system B through the normally open switches of the system A and the system relays. The two-machine hot standby switching circuit has the advantages that the circuit is simple, the quantity of the used relays is small and the cost is low; the circuit reliability is high and the isolation of the two systems is realized.
Owner:苏州富欣智能交通控制有限公司

Modulation-eliminating stimulated Brillouin scattering laser pulse compression apparatus

The invention provides a modulation-eliminating stimulated Brillouin scattering (SBS) laser impulse compression device, which relates to a device for obtaining modulation-free narrow impulse waveforms, and overcomes the defects that the output waveforms of an SBS impulse compression system in the prior art have poor quality, are unstable and are accompanied with modulation phenomenon. A Pump laser impulse is emitted by a laser light source and enters a first-stage compression system after passing through a first half-wave plate, a first polaroid and a first quarter-wave plate, wherein the first Polaroid and the first half-wave plate form an energy regulating system, and the first polaroid and the first quarter-wave plate form an isolated system; and the Pump laser impulse returns to the first polaroid along the same path and is driven into a reflecting mirror by the first polaroid, and the connections of the light paths of the reflecting mirror reflects the light to a second half-wave plate, wherein the second half-wave plate, a second polaroid, a second quarter-wave plate and a second-stage compression system are same as those of the light paths of the first half-wave plate, the first polaroid, the first quarter-wave plate and the first-stage compression system, and the output end of the second polaroid is a pulsed light output end. The modulation-eliminating stimulated Brillouin scattering laser impulse compression device is mainly applied to the energy level transition of a medium material of an optical pump research in spectroscopy.
Owner:HARBIN INST OF TECH

Noncontact gas leakage detection system

The invention relates to a noncontact gas leakage detection system. The system comprises a support, a gas isolation shield device, a plurality of gas detection sensors, a plurality of gas flow sensors, a temperature sensor, an air blower, a gas detection sensor receiver, a gas flow sensor receiver and a computer processing system. The gas isolation shield device is away from a horizontal storage tank and used for forming a relatively isolated system on the surface of the horizontal storage tank; the gas detection sensors are distributed on the gas isolation shield device; the gas flow sensors are distributed on the gas isolation shield device; the temperature sensor is arranged in the middle of the axis of the gas isolation shield device; the air blower is fixedly arranged on one side of the gas isolation shield device; the gas detection sensor receiver is arranged at a corner of the support and connected with the gas detection sensors through cables; the gas flow sensor receiver is arranged at a corner of the support and connected with the gas flow sensors through cables; the computer processing system is connected with the gas detection sensor receiver, the gas flow sensor receiver and the temperature sensor through a signal circuit and used for receiving and processing acquired feedback data and real-time data.
Owner:西安富润嘉业新材料科技有限公司
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