Abstract: A filter preprocessing circuit includes: a determiner configured to determine, depending on a level of an offset included in a detection signal from a gyro sensor, whether or not a preprocessing operation is to be performed before the detection signal is transferred to a filter; and a remover configured to remove a portion of the offset from the detection signal during the preprocessing operation.

Abstract: There is provided an apparatus for correcting a gyro sensor, including: a driving circuit using a driving displacement signal from the gyro sensor and a reference voltage to output a demodulated signal; a correction circuit determining whether a duty ratio of the demodulated signal is distorted and performing a correction to converge the duty ratio of the demodulated signal to a preset target value if it is determined that the duty ratio of the demodulated signal is distorted; and a sensing circuit performing a demodulation process of a sensing signal from the gyro sensor using the demodulated signal to output a gyro signal, whereby it is possible to accurately detect the gyro signal so as to assure reliability of the gyro sensor.

Abstract: Disclosed herein are an apparatus and a method for controlling an automatic gain of an inertial sensor. The automatic gain control apparatus of an inertial sensor includes: an inertial sensor; a driving unit; a detection unit; a state determination unit generates an AGC control signal according to the state of the driving mass; and a control unit that includes an AGC controlling to compensate for the driving displacement of the driving mass when the state of the driving mass is abnormal and performs a control to wake-up the AGC or convert the AGC into a sleep mode according to the AGC control signal input from the state determination unit to operate the AGC at the corresponding driving rate.

Abstract: Embodiments of the invention provide a driving circuit of a gyro sensor and a method for controlling a driving circuit of a gyro sensor. The driving circuit includes an analog circuit configured to receive one or more driving displacement signals and one or more gyro signals related to one or more sensing axes from the gyro sensor, detect one or more direct current (DC) gyro signal values through a demodulation process using a clock signal generated by using the one or more driving displacement signals and the one or more gyro signals, and receive temperature data from a temperature sensor. The driving circuit further includes a signal converter configured to convert the one or more DC gyro signals and the temperature data into one or more digital signals, and a digital circuit.

Abstract: Disclosed herein is an inertial sensor control module. The inertial sensor control module according to a preferred embodiment of the present invention includes: an inertial sensor including a driving mass, a driving unit driving the driving mass of the inertial sensor according to a control signal to the inertial sensor, a control unit connected to the driving unit and generating the control signal to transfer the generated control signal to the driving unit, and a sensing unit connected between the inertial sensor and the control unit and detecting information about whether the driving mass of the inertial sensor is in a stabilized state or information about an inertial force of the inertial sensor to transfer the detected information to the outside or the control unit.

Abstract: Disclosed herein is an apparatus for driving a gyro sensor, the apparatus including: a driving unit, an automatic gain control unit, and a first signal converting unit, wherein the driving unit transmits data for a phase value or amplitude value so that an operation of a control gain for an amplitude or phase of a driving mass resonance of the automatic gain control unit may be performed depending on a preset ratio.

Abstract: Disclosed herein is an apparatus for driving an inertial sensor, the apparatus including: at least one inertial sensor including a driving mass; an analog circuit unit detecting an amplitude value and a phase value of a driving mass resonance from a driving displacement signal of the inertial sensor; a first signal converting unit converting the amplitude value and the phase value into a digital value; a digital automatic gain control unit generating a control gain for controlling an amplitude or phase of the driving mass resonance so that the digitalized amplitude value or the phase value converges on a preset target value; and a second signal converting unit converting the control gain into an analog value and transmitting the analog value to the analog circuit unit, wherein the analog circuit unit applies a driving signal having the control gain reflected thereto to the inertial sensor.

Abstract: Disclosed herein are an adaptive automatic gain control apparatus and method for an inertial sensor. The adaptive automatic gain control apparatus for an inertial sensor, includes: a displacement measuring unit measuring and outputting a driving displacement of the inertial sensor; and a controlling unit driving the inertial sensor using an initial driving signal and then resetting a driving signal while changing a margin value using the driving displacement measured by the displacement measuring unit, thereby driving the inertial sensor.

Abstract: The present invention relates to an apparatus and a method for automatic gain control of a sensor, and a sensor apparatus. The apparatus for automatic gain control of a sensor including: a PID control unit for outputting a gain value applied compensated sensor signal by performing PID control while generating and changing a gain value to converge a peak value of a sensor signal to a target value; and a margin calculation unit for determining the degree of change of peaks of a previous gain value applied compensated sensor signal and a current gain value applied compensated sensor signal and performing calculation of a margin for stabilizing the compensated sensor signal according to the result of determination of the degree of change is provided. Further, a sensor apparatus and a method for automatic gain control of a sensor are provided.

Abstract: Disclosed herein are an apparatus and a method for controlling a gain automatically in an inertia sensor. The apparatus for controlling a gain automatically in an inertia sensor includes: an inertia sensor detecting an acceleration and angular velocity of a corresponding shaft by vibration and Coriolis force of a driving mass for each shaft; a driving unit vibrating the driving mass toward the corresponding shaft by applied driving voltage; a detection unit detecting driving displacement of the driving mass which vibrates by the driving unit; and a control unit comparing the detected driving displacement with a predetermined target value to judge a state of the driving mass and when a state of the driving mass is abnormal, and controlling the driving displacement of the driving mass to be compensated, and as a result, accuracy can be improved, and damage of the driving mass and driving noise can be minimized.

Abstract: Provided is an apparatus and method for detecting a tap. The apparatus includes a sensor configured to detect a motion and output a signal corresponding to the motion, a gradient calculating unit connected to the sensor to calculate a gradient of the output signal from the sensor, a similarity determining unit connected to the gradient calculating unit to determine a similarity between a rising gradient and a falling gradient of a curve of the output signal, a tap determining unit connected to the similarity determining unit to determine detection of a tap according to the determination result of the similarity determining unit, and an output unit configured to output the determination result of the tap determining unit.

Abstract: Disclosed herein are an apparatus and a method for controlling an automatic gain of an inertial sensor. The automatic gain control apparatus of an inertial sensor includes: an inertial sensor; a driving unit; a detection unit; a state determination unit generates an AGC control signal according to the state of the driving mass; and a control unit that includes an AGC controlling to compensate for the driving displacement of the driving mass when the state of the driving mass is abnormal and performs a control to wake-up the AGC or convert the AGC into a sleep mode according to the AGC control signal input from the state determination unit to operate the AGC at the corresponding driving rate.

Abstract: Disclosed herein is a control module of an inertial sensor, including: at least one inertial sensor including a driving mass; a sensing unit detecting and transferring information of the inertial sensor; a multiplexer unit including at least one multiplexer to selectively transfer the information of the inertial sensor to a sampling unit or a filter unit according to whether before or after start-up of the inertial sensor; a controlling unit including automatic gain control (AGC) and connected to the sampling unit and the filter unit to generate control information including an AGC gain for the inertial sensor; and a driving unit applying the AGC gain to the inertial sensor according to the control information, wherein the sampling unit and the filter unit are connected to each other so as to interwork with each other.

Abstract: Disclosed herein is an inertial sensor control module including: at least one inertial sensor including a driving mass and at least two pads connected to the driving mass; a driving unit applying a received control signal to the inertial sensor to drive the driving mass; a controlling unit connected to the driving unit and generating the control signal to transfer the control signal to the driving unit; and a sensing unit connected between the inertial sensor and the controlling unit and detecting information on whether the driving mass is in an abnormal resonance state for the control signal to transfer the detected information to the controlling unit.

Abstract: Disclosed herein is an inertial sensor. The inertial sensor according to a preferred embodiment of the present invention includes: a plate-shaped membrane; a mass body provided under the membrane; posts provided under an outside edge of the membrane and surrounding the mass body; a piezoelectric body formed on the membrane; sensing electrodes formed on the piezoelectric body; driving electrodes formed on an outer circumference of the sensing electrodes, wherein tri-axis angular velocity can be measured without time division by a driving control unit continuously applying first driving voltage and second driving voltage that are is AC driving voltage having a phase difference of 90°.

Abstract: Disclosed herein is an inertial sensor control module. The inertial sensor control module according to a preferred embodiment of the present invention includes: an inertial sensor including a driving mass, a driving unit driving the driving mass of the inertial sensor according to a control signal to the inertial sensor, a control unit connected to the driving unit and generating the control signal to transfer the generated control signal to the driving unit, and a sensing unit connected between the inertial sensor and the control unit and detecting information about whether the driving mass of the inertial sensor is in a stabilized state or information about an inertial force of the inertial sensor to transfer the detected information to the outside or the control unit.

Abstract: The present invention relates to a device for detecting motions and a method for detecting motions and includes a change rate calculation unit for calculating a change rate of signals outputted from the sensor, a decision range determination unit for determining the decision range in proportion to the change rate calculated in the change rate calculation unit, a motion decision unit for deciding the existence and inexistence of the motions from the signals outputted in the sensor based on the decision ranged determined in the decision range determination unit and an output unit for outputting the decision result of the motion decision unit.

Abstract: Provided is an apparatus and method for detecting a tap. The apparatus includes a sensor configured to detect a motion and output a signal corresponding to the motion, a gradient calculating unit connected to the sensor to calculate a gradient of the output signal from the sensor, a similarity determining unit connected to the gradient calculating unit to determine a similarity between a rising gradient and a falling gradient of a curve of the output signal, a tap determining unit connected to the similarity determining unit to determine detection of a tap according to the determination result of the similarity determining unit, and an output unit configured to output the determination result of the tap determining unit.

Abstract: Disclosed herein are a device for detecting motions and a method for detecting motions. The device for detecting motions includes a sensor detecting motions to output detection result signals; an accumulation operation unit accumulatively summing absolute values of the detection result signals in a preset accumulation period to derive signal accumulation values; a motion determination unit comparing the signal accumulation values with a preset first reference value to determine whether the motions are present; and an output unit outputting motion detection signals according to determination results of the motion determination unit. By this configuration, the exemplary embodiments of the present invention can reflect a size of the detection result signals to motion detection while improving inaccuracy of the motion detection according to a fixing of a threshold value.

Abstract: Provided is a device for detecting a double motion and a method of detecting a double motion. The device includes a sensor configured to detect a motion; a variation rate calculating part configured to calculate a variation rate of a signal output from the sensor; a detecting section control part configured to control a detecting section in reverse proportion to a value; a first motion detecting part and a second motion detecting part configured to determine that a motion occurs; and an output part configured to output a double motion result when a time between a time (t1) and a time (t2), and to output a single motion result when the time between the time (t1) and the time (t2) is larger than the detecting section. Therefore, it is possible to adjust the detecting section to the double motion according to the motion velocity.