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30results about How to "Modulation signal frequency adjustable" patented technology
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Fiber sensing system based on fiber laser
InactiveCN109141674AWork reliablyNo high frequency interferenceThermometers using physical/chemical changesActive medium shape and constructionMultiplexerVIT signals
The invention discloses a fiber sensing system based on a fiber laser, and belongs to the technical field of fiber sensors. The main structure of the system comprises a pump source (1), an optical multiplexer (2), and an Er-doped optical fiber (3). According to the invention, a sine signal is taken as a modulation signal, and no high-frequency interference can be generated, so the system is more reliable in working, is high in sensing precision, and is wide in application range.
Owner:JILIN UNIV
Micro-stress sensor for bridge monitoring
InactiveCN108955970AWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationMultiplexerErbium doping
The invention provides a micro-stress sensor for bridge monitoring, and belongs to the technical field of optical fiber sensors. The sensor is mainly provided with a pumping source (1), an optical wavelength division multiplexer (2), and an erbium-doped optical fiber (3). The sine signal is used as a modulation signal, high-frequency interference cannot be generated, and the sensor has the advantages of being more reliable in work, and high in sensing precision.
Owner:JILIN UNIV
High-precision stress sensor based on Bragg fiber grating
InactiveCN109186824AWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationGratingMultiplexer
A high-precision stress sensor based on Bragg fiber grating provided by the invention belongs to the technical field of optical fiber sensors. The sensor comprises the main structures of a pump source(1), a first photocoupler (2), an optical wavelength division multiplexer (3), and the like. The high-precision stress sensor provided by the invention uses a sinusoidal signal as the modulation signal without generating high-frequency interference, and has the characteristics such as more reliable work, high sensing precision and wide application range.
Owner:JILIN UNIV
A Fiber Optic Sensor Based on Michelson Interference
InactiveCN109029518BWork reliablyNo high frequency interferenceConverting sensor output opticallyMultiplexerEngineering
Owner:JILIN UNIV
High-precision temperature sensor
InactiveCN109029772AWork reliablyNo high frequency interferenceThermometers using physical/chemical changesMultiplexerOptical wavelength
The invention relates to a high-precision temperature sensor and belongs to the technical field of optical fiber sensors. The high-precision temperature sensor mainly comprises a pumping source (1), an optical wavelength division multiplexer (2), an Er-doped fiber (3) and the like. The high-precision temperature sensor provided by the invention uses a sinusoidal signal as a modulating signal, cannot produce high-frequency interference and has the characteristics of more reliable work, high sensing precision and wide application range.
Owner:JILIN UNIV
Micro stress sensor based on phase comparison
InactiveCN109238533AWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationPhysicsFiber optic sensor
The invention provides a micro stress sensor based on phase comparison, and belongs to the technical field of optical fiber sensors. The main structure of the micro stress sensor comprises a pumping source (1), an optical wavelength division multiplexer (2), an erbium doped optical fiber (3), and the like. The micro stress sensor provided by the invention uses a sinusoidal signal as a modulation signal, thereby generating no high frequency interference, and having the characteristics of more reliable work, high sensing precision, wide application range, etc.
Owner:JILIN UNIV
A High Precision Stress Sensing System Based on Michelson Interference Structure
InactiveCN108827505BWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationMultiplexerEngineering
The invention discloses a high-precision stress sensing system based on Michelson interference structure and belongs to the technical field of optical fiber sensors. The main structure of the high-precision stress sensing system comprises a pumping source (1), an optical wavelength division multiplexer (3), an erbium-doped optical fiber (3) and the like. The high-precision stress sensing system uses a sinusoidal signal as a modulation signal, does not generate high-frequency interference, and is reliable in operation, high in sensing precision and wide in application range.
Owner:JILIN UNIV
A Temperature Sensing System for Mine Safety Monitoring
InactiveCN109029773BWork reliablyNo high frequency interferenceThermometers using physical/chemical changesMultiplexerOptical coupler
Owner:JILIN UNIV
A High Precision Temperature Sensor
InactiveCN109029772BWork reliablyNo high frequency interferenceThermometers using physical/chemical changesMultiplexerMaterials science
Owner:JILIN UNIV
A Temperature Detection System Based on Michelson Interference Structure
InactiveCN109029775BWork reliablyNo high frequency interferenceThermometers using physical/chemical changesMultiplexerEngineering
A temperature detection system based on a Michelson interference structure of the invention belongs to the technical field of optical fiber sensors. Its main structure includes a pumping source (1), a first optical coupler (2), an optical wavelength division multiplexer (3) and the like. The invention uses a sinusoidal signal as a modulation signal, does not generate high-frequency interference, and has the characteristics of more reliable operation, high sensing precision, wide application range and the like.
Owner:JILIN UNIV
Fiber sensor based on Michelson interference
InactiveCN109029518AWork reliablyNo high frequency interferenceConverting sensor output opticallyMultiplexerMichelson interferometer
The invention discloses a fiber sensor based on Michelson interference and belongs to the technical field of the fiber sensor. A main structure of the fiber sensor comprises a pump source (1), a firstoptical coupler (2), an optical wavelength division multiplexer (3) and the like. According to the fiber sensor, a sinusoidal signal is taken as a modulation signal and high frequency interference isnot generated. The fiber sensor is characterized by relatively reliable working, high sensing precision and wide application range.
Owner:JILIN UNIV
A high-precision micro-stress sensor
InactiveCN109100063BWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationMultiplexerErbium doping
Owner:JILIN UNIV
A micro stress sensor based on phase comparison
InactiveCN109238533BWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationMultiplexerErbium doping
Owner:JILIN UNIV
Temperature sensor based on Mach-Zehnder interference structure
InactiveCN109029776AWork reliablyNo high frequency interferenceThermometers using physical/chemical changesMultiplexerFiber optic sensor
The invention discloses a temperature sensor based on a Mach-Zehnder interference structure, and belongs to the technical field of optical fiber sensors. The main structure of the temperature sensor comprises a pumping source (1), an optical wavelength division multiplexer (2), an Er-doped optical fiber. By use of the temperature sensor, a sinusoidal signal is taken as a modulation signal, no high-frequency interference is generated, and the temperature sensor has the characteristics of being reliable in working, high in sensing accuracy, wide in application range and the like.
Owner:JILIN UNIV
Temperature detection system based on Michelson interference structure
InactiveCN109029775AWork reliablyPhase detection error is smallThermometers using physical/chemical changesOptical couplerPhysics
The invention relates to a temperature detection system based on a Michelson interference structure and belongs to the technical field of optical fiber sensors. The temperature detection system mainlycomprises a pumping source (1), a first optical coupler (2), an optical wavelength division multiplexer (3) and the like. The temperature detection system provided by the invention uses a sinusoidalsignal as a modulating signal, can not produce high-frequency interference and has the characteristics of more reliable work, high sensing precision and wide application range.
Owner:JILIN UNIV
A multipurpose fiber optic sensor
Owner:JILIN UNIV
A Fiber Optic Sensor Based on Sine Wave Modulation
InactiveCN109084817BWork reliablyNo high frequency interferenceConverting sensor output opticallyMultiplexerErbium doping
Owner:JILIN UNIV
A High-Precision Stress Sensor Based on Fiber Bragg Grating
InactiveCN109186824BWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationGratingMultiplexer
Owner:JILIN UNIV
Multipoint temperature sensing system composed of fiber Bragg grating
InactiveCN109029774AWork reliablyNo high frequency interferenceThermometers using physical/chemical changesGratingFiber Bragg grating
The invention discloses a multipoint temperature sensing system composed of a fiber Bragg grating and belongs to the technical field of a fiber sensor. A main structure of the multipoint temperature sensing system comprises a pump source (1), an optical wavelength division multiplexer (2), an erbium-doped fiber (3) and the like. According to the multipoint temperature sensing system, a sinusoidalsignal is taken as a modulation signal and high frequency interference is not generated. The multipoint temperature sensing system is characterized by relatively reliable working, high sensing precision and wide application range.
Owner:JILIN UNIV
A Stress Sensor Based on Mach-Zehnder Interference Structure
InactiveCN109029806BWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationMultiplexerOptical coupler
Owner:JILIN UNIV
A fiber optic sensing system based on fiber laser
InactiveCN109141674BWork reliablyNo high frequency interferenceThermometers using physical/chemical changesActive medium shape and constructionMultiplexerErbium lasers
The invention relates to an optical fiber sensing system based on an optical fiber laser and belongs to the technical field of optical fiber sensors. Its main structures include a pump source (1), an optical wavelength division multiplexer (2), an erbium-doped optical fiber (3) and the like. The invention uses a sinusoidal signal as a modulation signal, does not generate high-frequency interference, and has the characteristics of more reliable operation, high sensing precision, wide application range and the like.
Owner:JILIN UNIV
A micro-stress sensor for bridge monitoring
InactiveCN108955970BWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationMultiplexerMaterials science
Owner:JILIN UNIV
Temperature detection device used in severe environment
InactiveCN109029771AWork reliablyNo high frequency interferenceThermometers using physical/chemical changesMultiplexerFiber optic sensor
The invention relates to a temperature detection device used in a severe environment and belongs to the technical field of optical fiber sensors. The temperature detection device mainly comprises a pumping source (1), an optical wavelength division multiplexer (2), an Er-doped fiber (3) and the like. The temperature detection device provided by the invention uses a sinusoidal signal as a modulating signal, can not produce high-frequency interference and has the characteristics of more reliable work and high sensing precision.
Owner:JILIN UNIV
Temperature sensing system used for mine safety monitoring
InactiveCN109029773AWork reliablyNo high frequency interferenceThermometers using physical/chemical changesMultiplexerEngineering
The invention relates to a temperature sensing system used for mine safety monitoring and belongs to the technical field of optical fiber sensors. The temperature sensing system mainly comprises a pumping source (1), a first optical coupler (2), an optical wavelength division multiplexer (3) and the like. The temperature sensing system provided by the invention uses a sinusoidal signal as a modulating signal, can not produce high-frequency interference and has the characteristics of more reliable work and high sensing precision.
Owner:JILIN UNIV
High-precision optical fiber sensor based on Mach-Zehnder interference structure
InactiveCN109029517AWork reliablyNo high frequency interferenceConverting sensor output opticallyMultiplexerOptical coupler
The invention relates to a high-precision optical fiber sensor based on a Mach-Zehnder interference structure and belongs to the technical field of optical fiber sensors. The high-precision optical fiber sensor mainly comprises a pumping source (1), a first optical coupler (2), an optical wavelength division multiplexer (3) and the like. The high-precision optical fiber sensor provided by the invention uses a sinusoidal signal as a modulating signal, can not produce high-frequency interference and has the characteristics of more reliable work, high sensing precision and wide application range.
Owner:JILIN UNIV
A Multipoint Temperature Sensing System Composed of Bragg Gratings
InactiveCN109029774BWork reliablyNo high frequency interferenceThermometers using physical/chemical changesGratingMultiplexer
Owner:JILIN UNIV
Stress sensor based on Mach-Zehnder interference structure
InactiveCN109029806AWork reliablyPhase detection error is smallForce measurement by measuring optical property variationPhysicsOptical coupler
The invention discloses a stress sensor based on a Mach-Zehnder interference structure, and belongs to the technical field of optical fiber sensors. The main structure of the stress sensor comprises apumping source (1), a first optical coupler (2), an optical wavelength division multiplexer (3) and the like. By use of the stress sensor, a sinusoidal signal is taken as a modulation signal, no high-frequency interference is generated, and the stress sensor has the characteristics of being reliable in working, high in sensing accuracy, wide in application range and the like.
Owner:JILIN UNIV
A high-precision optical fiber sensor based on Mach-Zehnder interference structure
InactiveCN109029517BWork reliablyNo high frequency interferenceConverting sensor output opticallyMultiplexerOptical coupler
Owner:JILIN UNIV
A temperature detection device in harsh environment
InactiveCN109029771BWork reliablyNo high frequency interferenceThermometers using physical/chemical changesMultiplexerMaterials science
Owner:JILIN UNIV
High-precision stress sensing system based on Michelson interference structure
InactiveCN108827505AWork reliablyNo high frequency interferenceForce measurement by measuring optical property variationMultiplexerErbium doping
The invention discloses a high-precision stress sensing system based on Michelson interference structure and belongs to the technical field of optical fiber sensors. The main structure of the high-precision stress sensing system comprises a pumping source (1), an optical wavelength division multiplexer (3), an erbium-doped optical fiber (3) and the like. The high-precision stress sensing system uses a sinusoidal signal as a modulation signal, does not generate high-frequency interference, and is reliable in operation, high in sensing precision and wide in application range.
Owner:JILIN UNIV
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