Micronor Inc.900 Calle Plano, Suite KCamarillo, CA 93012, USAT: 805.389.6600
www.micronor.com
MR303 MRI Safe Linear EncoderEnables New Medical Applications
SPIE Photonics West 2016San Francisco, CA USAFebruary 16, 2016
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Fiber Optic Kinetic Sensors• FO Rotary Encoders• FO Linear Encoders• FO Absolute Encoders• FO Incremental Encoders• FO Emergency Stop• FO U-Beam Sensor• FO Signaling Sensors• FO Microswitch*• FO Temperature Sensors
MR303Linear Sensor
MR302-2OEM Controller
MR302-1DIN RailMount
Controller
Presentation Outline
1. What is a Fiber Optic Sensor?2. MR303 Linear Sensor System3. Sample Operation4. How does it work?5. Homing Concept6. Some Customer Applications
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1. Principle Of Fiber Optic Sensors“Remote sensing and measuring of a physical quantity using
photonics for both sensing and transmission.”
Since most Fiber Optic Sensors are not of transducer(1) type they require an interrogator.
Sensor• Amplitude Modulator• Bragg Gratings• Interferometers• Spectrum Modulators• etc.
InterrogatorSource
ReceiverSignal
Processing
User Interface
Fiber Connection
Non Electric – No Interference
(1) transducer – a device that converts one form of energy into another.
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Benefits of Fiber Optic Sensors• Electrically passive, all-optical design • 100% Electrical isolation, No Ground Loops• Immune to EMI and RFI• Immune to Lightning, High Voltage and Atmospheric Static• Immune to High Magnetic Fields• Transparent to Magnetic Fields (MRI and Radar)• Outdistances copper – links to 2000 meters and more• Inherently Safe (no sparks)• Radiation resistant (special engineered models required)
• Designed for position sensing within medical instruments
• Microwave safe design, withstands high levels of electromagnetic radiation
2. What Is The MR303 Sensor Used For?
MR302-2 OEM Controller
LC DuplexOptical
Interface
Electrical Interface
Typical System ConnectionsMR303
Linear Sensor
MR304Rotary Sensor
MR302-2OEM Controller
5V Supply Servo Drive
PLC or System Controller
STATUS Output
HOMINGInput
Modbus/RS485
Duplex62.5/125μmMultimodeFiber Link
Typical System ConnectionsMR303
Linear Sensor
MR304Rotary Sensor
MR302-2OEM Controller
5V Supply Servo Drive
PLC or System Controller
STATUS Output
HOMINGInput
Modbus/RS485
Duplex62.5/125μmMultimodeFiber Link
Typical System ConnectionsMR303
Linear Sensor
MR304Rotary Sensor
MR302-2OEM Controller
5V Supply Servo Drive
PLC or System Controller
STATUS Output
HOMINGInput
Modbus/RS485
Duplex62.5/125μmMultimodeFiber Link
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3. Sample Operation(Embedded Video Removed)
Phase 1
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 2
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 3
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 4
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 5
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 6
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 7
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 8
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 9
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 10
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 10
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
Phase 11
400µm
850nm
980nm
Optical Signals
Electrical Outputs A
B
100µm
4. HOMING Conceptfor Absolute Position Monitoring
Left“Home”Position
Right“Home”Position Working Area
MR303 Sensor
Ref Position Ref Position
Sensor Movement
As an incremental system, the absolute position must be set every time the system is powered up.
Left“Home”Position
Right“Home”Position Working Area
Ref Position Ref Position
Sensor Movement
To automate this process, Micronor has developed a special “Homing” zone left or right of the film’s active area, similar to the Index on a conventional encoder.
4. HOMING Conceptfor Absolute Position Monitoring
In this example, the internal Preset Value will be set to 250.
A Reset command (via HOMING input or software) to the Controller will reset the Internal Position Counter to 250.
Left“Home”Position
Right“Home”Position
MR303 Sensor
250, 249, 248 3, 2, 1, 0
4. HOMING Conceptfor Absolute Position Monitoring
5. Some MR303 Customer Applications
Designed for use in environments where conventional electronics-based encoders and resolvers cannot be used. • MRI • Medical • Semiconductor Processing• Linear Actuators• Robotics
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Application: MRI Safe Medical Devices
Today’s clinical MRI systems operate at field strengths of 1.5T and 3T with research systems operating up to 10T. The presence of ferromagnetic materials represent an extreme “ballistic” danger while non-ferromagnetic materials and metals can leave undesirable artifacts on MRI scans.
For Company Internal Use Only
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MRI Guided Prostrate Biopsies Help Quantify Risk and Detect More Aggressive Cancers
The increasing cost of cancer treatment has opened up creative opportunities for reliable methods for early detection.
Alternate detection methods have fairly high false-positive rates or can lead to incorrect analysis.
MRI-guided biopsy provides the most accurate results.
SPIE Photonics West 2016
Source: Pokorny et. Al., Eur. Urol., 66 (2014), 22-29
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Polymer RoboticsMRI Guided Biopsy Robot (Prototype)
The Falcon™ is the world's first transperinealMRI-Guided targeting system for prostate cancer. The Falcon offers cutting-edge technology which enables highly focused and minimally-invasive procedures.
SPIE Photonics West 2016
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Polymer RoboticsMRI Safe Biopsy Robot (Prototype)
SPIE Photonics West 2016
Enabling In-Bore MRI Guided Interventions• Biopsy• Brachytherapy• Ablation
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Polymer RoboticsMRI Safe Biopsy Robot (Prototype)
SPIE Photonics West 2016
Multi-axis Position Monitoring via MR303
Linear Encoders
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Application: Super Paramagnetic Relaxation Measurements
MR303 Linear Sensor is used in Super Paramagnetic Relaxation Measurements where extremely small magnetic fields are measured. A position sensor for these measurements must be non-ferromagnetic and invisible to the Super Magnetic Quantum Interference Device (SQUID) sensors.
MR303 Sensoris Invisible to
Magnetic Fields
For Company Internal Use Only
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Senior ScientificMRX Gen II (Prototype)
Senior Scientific is developing medical device for early detection of breast cancer using Nanomagnetic Relaxometry.
PrecisionMRX™ nanoparticles are injected into the patient which target breast cancer cells.
The nanoparticles are energized via a superconducting magnetic. Ultra-sensiviveSQUID sensor scans and locates the particles.
SPIE Photonics West 2016
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Inside MRX Gen II
SPIE Photonics West 2016
MR303 Non-MetallicLinear Encoder
MR303 Non-MetallicLinear Encoder
And Encoder Film
Front Back
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Fiber Optic Kinetic Sensors
MR303Linear Sensor
MR302-2OEM Controller
MR302-1DIN RailMount
Controller
AnyQuestions?
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Micronor Inc.900 Calle Plano, Suite KCamarillo, CA 93012, USAT: 805.389.6600
www.micronor.com
MR303 MRI Safe Linear EncoderEnables New Medical Applications
SPIE Photonics West 2016San Francisco, CA USAFebruary 16, 2016