Patents by Inventor Daniel Zahi Abawi
Daniel Zahi Abawi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230099576Abstract: An interface circuit includes an input circuit. The input circuit includes a first input pin, a second input pin and a third input pin. The input circuit further includes a first operational amplifier including a first output pin, a first non-inverting input pin electrically coupled to the first input pin via a first impedance and a first switch, and a first inverting input pin coupled to the first output pin. The input circuit also includes a second operational amplifier including a second output pin, a second non-inverting input electrically coupled to the second input pin via a second impedance and a second inverting input pin electrically coupled to the third input pin via a third impedance and a second switch. The first input pin and the second input pin are electrically coupled via a third switch and a fourth impedance.Type: ApplicationFiled: September 30, 2021Publication date: March 30, 2023Inventors: Jianjun Jiang, Daniel Zahi Abawi, Guijun Zhang, Chang Lv, Shijia Guo
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Patent number: 11428730Abstract: A method includes receiving data characterizing an output of a sensor coupled to an industrial equipment. The output can include a sum of a first secondary coil and a voltage of a second secondary coil. The first secondary coil can be included in a first circuit and the second secondary coil can be included in second circuit configured within the sensor. The method can also include determining an integrity state of a circuit configured within the sensor. The integrity state can be determined based on the received data. The integrity state can identify a state of operation of the circuit configured within the sensor. The method can further include providing the integrity state. Related systems, techniques, and non-transitory computer readable mediums are also described.Type: GrantFiled: July 2, 2020Date of Patent: August 30, 2022Assignee: BAKER HUGHES OILFIELD OPERATIONS LLCInventors: Jianjun Jiang, Guijun Zhang, Peipei Wang, Daniel Zahi Abawi
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Publication number: 20220003809Abstract: A method includes receiving data characterizing an output of a sensor coupled to an industrial equipment. The output can include a sum of a first secondary coil and a voltage of a second secondary coil. The first secondary coil can be included in a first circuit and the second secondary coil can be included in second circuit configured within the sensor. The method can also include determining an integrity state of a circuit configured within the sensor. The integrity state can be determined based on the received data. The integrity state can identify a state of operation of the circuit configured within the sensor. The method can further include providing the integrity state. Related systems, techniques, and non-transitory computer readable mediums are also described.Type: ApplicationFiled: July 2, 2020Publication date: January 6, 2022Inventors: Jiang Jianjun, Zhang Guijun, Wang Peipei, Daniel Zahi Abawi
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Patent number: 8963615Abstract: A system is provided that includes an input node configured to receive a signal indicative of sensor data. The system also includes a first transistor configured to route the signal to a positive channel when a polarity of the signal is positive. Moreover, the system includes a second transistor configured to route the signal to a negative channel when a polarity of the signal is negative. Additionally, the system includes the positive channel coupled to the first transistor configured to route the signal to an analysis component. Furthermore, the system includes the negative channel coupled to the second transistor and configured to route the signal to the analysis component.Type: GrantFiled: January 31, 2013Date of Patent: February 24, 2015Assignee: General Electric CompanyInventors: Daniel Zahi Abawi, James Merrill Roylance
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Publication number: 20140260507Abstract: A system includes a sensor that is configured to measure an operating parameter of a machine and transmit a signal related to the measured operating parameter. The system also includes a passive signal modification circuit. The passive modification circuit is configured to receive the signal and generate a modified signal based on the received signal. Additionally, the modified signal that is generated has a characteristic that it exceeds a threshold value for an amount of time greater than a second amount of time that the received signal exceeds the threshold value. The passive modification circuit is further configured to control the amount of time that the modified signal exceeds the threshold value.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventor: Daniel Zahi Abawi
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Patent number: 8836322Abstract: Embodiments of the invention described herein provide a magnetic sensor interface capable of adjusting signal conditioning dynamically using a speed signal of a target such that the true positive and negative peaks of the input signal are maintained for the given target across its entire speed range (0-Max rpm), therefore increasing the signal to noise ratio at low speeds and avoiding clipping or distortion at high speeds. In one aspect, a method comprises receiving an alternating differential voltage signal from a sensor. The differential voltage signal has an amplitude that changes relative to a change in speed of a target. The alternating differential voltage signal is converted to an attenuated single-ended voltage signal that can be dynamically scaled. The attenuated single-ended voltage signal can be scaled by multiplying the attenuated single-ended voltage signal by a scaling factor.Type: GrantFiled: February 23, 2011Date of Patent: September 16, 2014Assignee: General Electric CompanyInventors: James Merrill Roylance, Daniel Zahi Abawi, Biplab Deb
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Patent number: 8710825Abstract: Embodiments of the invention described herein provide a magnetic sensor interface capable of adjusting signal conditioning dynamically such that the true positive and negative peaks of the input signal are maintained for a given target across its entire speed range (0-Max rpm), therefore increasing the signal to noise ratio at low speeds and avoiding clipping or distortion at high speeds. In one aspect, a method comprises receiving an alternating differential voltage signal from a sensor. The alternating differential voltage signal has an amplitude that changes over time. The alternating differential voltage signal is converted to an attenuated single-ended voltage signal that can be dynamically scaled. The attenuated single-ended voltage signal can be scaled by multiplying the attenuated single-ended voltage signal by a scaling factor. The scaling factor is selected relative to a signal-to-noise ratio of the scaled attenuated single-ended voltage signal.Type: GrantFiled: February 23, 2011Date of Patent: April 29, 2014Assignee: General Electric CompanyInventors: James Merrill Roylance, Daniel Zahi Abawi, Biplab Deb
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Patent number: 8656761Abstract: Isolation circuits, turbine data acquisition systems, and related methods are disclosed. One example isolation circuit includes a voltage divider circuit for coupling to an operational sensor, a clamping circuit connected to said voltage divider circuit and a gain circuit connected to said clamping circuit. The voltage divider circuit is configured to divide an amplitude of a signal received from the sensor. The clamping circuit is configured to limit voltage from said voltage divider circuit. The gain circuit includes an output. The isolation circuit provides a single-ended output signal to the output of the gain circuit as a function of the sensor signal and independent of ground.Type: GrantFiled: May 27, 2011Date of Patent: February 25, 2014Assignee: General Electric CompanyInventor: Daniel Zahi Abawi
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Publication number: 20120297864Abstract: Isolation circuits, turbine data acquisition systems, and related methods are disclosed. One example isolation circuit includes a voltage divider circuit for coupling to an operational sensor, a clamping circuit connected to said voltage divider circuit and a gain circuit connected to said clamping circuit. The voltage divider circuit is configured to divide an amplitude of a signal received from the sensor. The clamping circuit is configured to limit voltage from said voltage divider circuit. The gain circuit includes an output. The isolation circuit provides a single-ended output signal to the output of the gain circuit as a function of the sensor signal and independent of ground.Type: ApplicationFiled: May 27, 2011Publication date: November 29, 2012Inventor: Daniel Zahi Abawi
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Publication number: 20120212277Abstract: Embodiments of the invention described herein provide a magnetic sensor interface capable of adjusting signal conditioning dynamically using a speed signal of a target such that the true positive and negative peaks of the input signal are maintained for the given target across its entire speed range (0-Max rpm), therefore increasing the signal to noise ratio at low speeds and avoiding clipping or distortion at high speeds. In one aspect, a method comprises receiving an alternating differential voltage signal from a sensor. The differential voltage signal has an amplitude that changes relative to a change in speed of a target. The alternating differential voltage signal is converted to an attenuated single-ended voltage signal that can be dynamically scaled. The attenuated single-ended voltage signal can be scaled by multiplying the attenuated single-ended voltage signal by a scaling factor.Type: ApplicationFiled: February 23, 2011Publication date: August 23, 2012Inventors: James Merrill Roylance, Daniel Zahi Abawi, Biplab Deb
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Publication number: 20120212214Abstract: Embodiments of the invention described herein provide a magnetic sensor interface capable of adjusting signal conditioning dynamically such that the true positive and negative peaks of the input signal are maintained for a given target across its entire speed range (0-Max rpm), therefore increasing the signal to noise ratio at low speeds and avoiding clipping or distortion at high speeds. In one aspect, a method comprises receiving an alternating differential voltage signal from a sensor. The alternating differential voltage signal has an amplitude that changes over time. The alternating differential voltage signal is converted to an attenuated single-ended voltage signal that can be dynamically scaled. The attenuated single-ended voltage signal can be scaled by multiplying the attenuated single-ended voltage signal by a scaling factor. The scaling factor is selected relative to a signal-to-noise ratio of the scaled attenuated single-ended voltage signal.Type: ApplicationFiled: February 23, 2011Publication date: August 23, 2012Inventors: James Merrill Roylance, Daniel Zahi Abawi, Biplab Deb