81 results about "Gain setting" patented technology

A sensor and method for determining the state of a humidification chamber in a respiratory gas humidifier. The sensor comprises a transmitter for emitting an electromagnetic radiation signal, a receiver for receiving the electromagnetic radiation signal and providing an output signal, and a controller for varying the intensity of the electromagnetic radiation signal emitted by the transmitter and / or the gain setting of the receiver. The controller has two sensor configurations, a first configuration in which the transmitter emits an electromagnetic radiation signal having a first intensity, the receiver has a first gain setting, and the receiver provides a first output signal, and a second configuration in which the transmitter emits an electromagnetic radiation signal having a second intensity, the receiver has a second gain setting, and the receiver provides a second output signal, wherein the first intensity is different to the second intensity, and / or the first gain setting is different to the second gain setting, and the controller determines a state of the humidification chamber by comparing the first and second outputs of the receiver with one or more threshold values.

A programmable gain amplifier (PGA) architecture provides for robust operation over a bandwidth and for a multitude of gain settings. For instance, the PGA architecture may include multiple switches to implement different current paths by bypassing resistors in a resistor ladder. The different current paths may result in different gain settings. In some implementations, the switches may be used to hold a value of RA constant while a value of RB may be varied over the different gain settings, where gain may be inferred from the equation Vout=Vin*(1+RB / RA).

According to an embodiment, a biopotential measurement system includes an analog front-end and digital circuits. The analog front-end circuit includes a sensing electrode, a forward amplifier, and a feedback amplifier with an integration capacitor. A feature is the attenuation circuit between the forward and feedback amplifiers, which provides an attenuation factor determining the integration capacitor's value for achieving the desired high-pass corner frequency. With configurable attenuation factors, the system can process different biopotential signals. Multiple analog front-end circuits can be used to process different signals simultaneously. The digital circuit includes a processor for signal processing, dynamic adjustment of attenuation factors, and anomaly detection. Additional components like switched capacitors, pseudo-resistors, and multiplexers can enhance the system's functionality. The design allows flexible, multi-parameter physiological monitoring with adjustable frequency responses and gain settings.

A first acquisition unit acquires a road surface displacement-associated value related to up-down direction displacement of a road surface forward of a vehicle. A second acquisition unit acquires a state related to up-down direction displacement of a sprung structure or an unsprung structure of the vehicle. A deriving unit derives, in time series data of the road surface displacement-associated value or the state that is acquired, a ratio between a magnitude of a component of a first frequency band and a magnitude of a component of a second frequency band. A control unit executes feedforward control based on the road surface displacement-associated value that is acquired, and also executes feedback control based on the state that is acquired. A setting unit sets, when the derived ratio is no less than a threshold value, and also the feedforward control is not being appropriately executed, the feedback gain to be great.

A semiconductor integrated circuit device capable of inputting a signal of a MEMS transducer 2 includes: a power supply circuit 11 for the MEMS transducer 2; an input amplifier 12 for inputting and amplifying a signal of the MEMS transducer 2; a line driver 13 for amplifying an output from the input amplifier 12 and allowing for driving of a load connected to an output terminal T3, the line driver 13 having an input terminal; and the output terminal T3 for outputting an output of the line driver 13, wherein the power supply circuit 11, the input amplifier 12, and the line driver 13 are integrally formed on a semiconductor substrate, and wherein a gain setting circuit 14 for determining gain of the line driver 13 and a DC potential of the output terminal T3 is connected to the input terminal of the line driver 13.

The on-off keying (OOK) receiver has a discontinuous automatic gain control (AGC) that sets the gain at the start of each frame and locks the gain setting for the remainder of that frame, preventing the OOK data from causing instability in the AGC loop. The AGC controller initializes the gain settings of the low-noise amplifier (LNA), low-pass filter (LPF), and programmable gain amplifier (PGA) to maximum values. The LNA, LPF, and PGA are in series and provide an input signal to the rectifier, which produces a voltage output to the 1 / 0 data decision circuit. The level detector compares the voltage output with two thresholds. When either threshold is exceeded, the AGC controller steps down the gain setting until the voltage output is between the two thresholds, at which point the gain setting is locked for the remainder of the current frame. When a long string of 0 data is detected between frames, the frame detector resets the AGC controller between frames. The LNA gain is reduced last.

The technical scheme of the present application provides a dynamic range control circuit, an audio processing chip and an audio processing method thereof, wherein the dynamic range control circuit has a plurality of parallel gain generation modules and an output module, and each gain generation module has a separate gain generator and a gain smoothing processing module. In the same gain generation module, the gain generator is used for gain processing of an input signal, and the gain smoothing processing module is used for setting the compression time and release time of the gain generation module based on the output gain of the gain generator. It can be seen that in each gain generation module, the compression time and release time of each gain generation module can be set by the respective smoothing processing module, so that the compression time and release time of different gain generation modules are separated, which can greatly improve the tuning of the audio power amplifier and the user's auditory perception.

To reduce leakage current caused by a switch that adjusts the gain of an amplifier in a photoelectric conversion device.SOLUTION: A photoelectric conversion device (photoelectric conversion device 100) has a control mechanism in which, when the gain of an amplifier (amplifier 7) is set to a first gain, a first switch (first switch 1) and a third switch (third switch 3) are set to a non-conducting state, and, a second switch (second switch 2) is set to a conducting state, so that, at the first switch (first switch 1), the potential of one end (one end 11) is made the same as the potential of the other end (the other end 12).SELECTED DRAWING: Figure 1

Satellite Transmitter and Communication System The present invention relates to a radio unit for a satellite communication system arranged for transmitting a waveform which bears data symbols on at least one carrier. The waveform is a non-slotted signal of at least 30 seconds. The radio unit is arranged for ramping up or down the power of the waveform to be transmitted according to a predefined power profile from a start power value to a target power value via at least one intermediate power value by adjusting at least one digital or analog variable gain setting. The radio unit comprises computation means to calculate the at least one digital or analog variable gain for the at least one intermediate power value to implement the predefined power profile to ramp up or down said power of the signal to be transmitted from the start power value towards the target power value. The predefined power profile is set by at least a parameter indicative of the adjustment speed of said at least one intermediate power value. The radio unit is part of a transmitter, which can be a single-carrier or multicarrier transmitter.

Circuit for maximizing the dynamic range in a digital-to-analog signal path (100; 200; 300; 400), comprising: a. an input for receiving an input signal (110; 201; 301; 401); b. a first gain stage (120; 210; 330; 445) coupled to the input, the first gain stage (120; 210; 330; 445) having a first gain setting; c. a second gain stage (140; 230; 370; 460) coupled to the first gain stage (120; 210; 330; 445), the second gain stage (140; 230; 370; 460) having a second gain setting, the second gain stage (140; 230; 370; 460) having an analog gain stage and the second gain setting having an analog gain setting; d. a controller (150; 250; 320; 420) for dynamically selecting the first gain setting to maximize the first gain setting without clipping the input signal and for selecting the second gain setting to achieve a desired signal path gain; and e. an output coupled to the second gain stage (140; 230; 370; 460) for transmitting an output signal (235) having the desired overall signal path gain.

A system and method for dynamic calibration of force sensor mediums is provided. The method includes: causing a force to be applied to and removed from a sensor; making force readings as the force is applied and removed; adjusting a gain setting; calculating the gain setting based on a resistance recorded at a peak force; calculating measured curves of the force readings; calculating a subsequent resistance upon a change in response to the force applied to the sensor; recording a duration that the force is applied; and calculating an absolute force based at least in part on the duration and the peak force. The method may also include: preprocessing data; training a machine learning model to align data points from the data to the baseline curve; and using the trained machine learning model to adjust the force readings in real time.

The invention relates to the technical field of audio signal enhancement, in particular to a bass enhancement sound effect processing method for an audio processor, which comprises the following steps: acquiring an audio signal and converting the audio signal into a frequency domain, extracting spectrum characteristics of a low-frequency signal, monitoring signal strength and change, calculating and adjusting dynamic gain, and updating bandwidth and gain setting of a filter. Evaluating the quality deviation between the optimized low-frequency signal and the target audio frequency spectrum, generating a low-frequency signal evaluation result, adjusting the gain and frequency response, and optimizing the audio output signal. According to the invention, by performing frequency domain analysis on the low-frequency signal, accurately extracting amplitude, frequency distribution and phase information, and calculating the dynamic gain according to the signal strength and change, the gain amount of the low-frequency signal can be effectively adjusted, the bandwidth and gain setting of the filter can be updated, the low-frequency frequency response can be optimized, and the tone quality distortion can be reduced; and through comparison with a target audio frequency spectrum, a quality deviation value is accurately calculated, and it is ensured that a low-frequency signal meets a high-standard audio processing requirement.

The invention provides an active sound effect generation device and an active sound effect generation method. An active sound effect generation device (10) that causes a speaker (12) to output a sound effect into a cabin of a vehicle driven by an electric motor, the active sound effect generation device (10) being provided with: a signal generation unit (34) that generates a first sound effect signal, which is a signal for causing the speaker to output the sound effect; a gain setting unit (35) that sets a gain in accordance with the amount of regeneration of the motor; the output unit (30) outputs, to the speaker, a second sound effect signal generated by multiplying the first sound effect signal by the gain. Therefore, a better active sound effect generating device can be provided.

A control device (80) is applied to an electric vehicle (10) that conveys an object (15) and that comprises: drive wheels (12); a motor (31) for rotationally driving the drive wheels; and an inverter (34) electrically connected to armature windings (31a) of the motor. This control device comprises: switch control units (90-93) that perform switching control of the inverter in order to feedback-control the rotational speed of the drive wheels or the rotational speed of a rotor of the motor so that the same becomes a command rotational speed; and a gain setting unit (94) that makes the control gain of the feedback control variable, on the basis of the rotational speed and / or the total weight of the object and the electric vehicle.

A method for controlling switching between a full-winding control mode and a half-winding control mode for a symmetrical winding configuration of a multi-phase electric machine (10), the machine (10) including a stator (18) and a rotor (14), split stator windings for each phase of the machine (10), each stator winding (24) having a first winding portion and a second winding portion, an inverter circuit (50) including a pair of inverter switches (56) for each phase of the machine (10), the pair of inverter switches (56) for each phase being electrically coupled to the first and second winding portions for that phase in the stator (18) and a plurality of switching arrangements for switching between the full-winding mode and the half-winding mode,wherein each switch assembly is electrically coupled to the pair of inverter switches (56) and the first and second winding sections for a particular phase, and wherein each switch assembly includes a first AC switching device (90) and a second AC switching device (90), the method comprising: , identifying the motor speed and torque command signals for the machine; determining whether the motor speed and torque command signals require full winding mode or half winding mode; determining whether the winding control mode of the machine (10) transitions from the half-winding mode to the full-winding mode if the motor speed and torque command signals require the full-winding mode, and determining whether the winding control mode transitions from the full-winding mode to the half-winding mode if the motor speed and torque command signals require the half-winding mode; providing switching control commands for the plurality of switching arrangements for a direct-axis current, a quadrature-axis current, and the current loop gains for full stator windings, provided that the motor speed and torque command signals require the full-winding mode and the winding mode does not transition from the half-winding mode to the full-winding mode, or providing switching control commands for the plurality of switching arrangements for the direct-axis current, the quadrature-axis current, and the current loop gain for half-stator windings, provided that the motor speed and torque command signals require the half-winding mode and the winding mode does not transition from the full-winding mode to the half-winding mode; setting the direct-axis and quadrature-axis current to zero if the motor speed and torque command signals require the full-winding mode or the half-winding mode and it is determined that the winding mode is transitioning from the half-winding mode to the full-winding mode or from the full-winding mode to the half-winding mode; waiting for a phase current in each of the stator windings (24) to be less than a predetermined minimum current after the direct axis and quadrature axis currents have been set to zero; deactivating the inverter circuit switching signals and the half-winding mode switching signals transmitted to the AC switching devices (90) for the full-winding mode, or deactivating the inverter circuit switching signals and the full-winding mode switching signals transmitted to the AC switching devices (90) for the half-winding mode after the direct-axis and quadrature-axis currents are set to zero; waiting for a predetermined delay time after the inverter circuit switching signals and the half-winding mode switching signals or the full-winding mode switching signals are deactivated; setting the direct-axis current, the quadrature-axis current and the current loop gain to predetermined values ​​for the full-winding mode or the half-winding mode after the delay time has elapsed; activating the inverter switching signals and the full-winding mode switching signals transmitted to the AC switching devices (90) for the full-winding mode, or activating the inverter switching signals and the half-winding mode switching signals transmitted to the AC switching devices (90) for the half-winding mode; and providing the switching control commands for the plurality of switching arrangements for the direct axis current, the quadrature axis current, and the current loop gains for the full stator windings and the half stator windings, respectively.

Even if gain adjustment is performed according to the signal intensity of a reflected wave, the internal state of a subject is examined with high precision. The ultrasonic inspection device is configured to have an ultrasonic probe provided with a piezoelectric element for transmitting and receiving ultrasonic waves and an acoustic lens, and is further provided with: a gain setting unit for setting a gain for amplifying reflected waves; a reference wave information acquisition unit that acquires, as reference waves of lens echoes generated in the acoustic lens, reflected waves amplified using the gain set by the gain setting unit when the output ultrasonic waves are transmitted to a test environment in which the subject is not present; an interference wave information acquisition unit that acquires, as interference wave information including information on the internal state of the subject, a reflected wave amplified using the gain set by the gain setting unit when the output ultrasonic wave is transmitted to a test environment in which the subject is present; and an information processing unit that obtains information about the internal state of the subject on the basis of the information about the interference waves and the information about the reference waves.

The invention discloses a new energy frequency modulation gain setting method, device and equipment, and the method comprises the steps: collecting power system equipment parameters and new energy meteorological data, calculating the wind-solar power generation output and permeability, building an aggregation model considering the new energy permeability and frequency modulation gain, and carrying out the adjustment of the frequency modulation gain. And after a frequency variation analytic expression is extracted, a frequency modulation gain instruction is optimized and generated in two stages to complete setting. The system working condition change is dynamically matched, and the frequency modulation gain setting scheme is synchronously adjusted along with the working condition. In the first stage, the fluctuation amplitude is controlled by taking suppression of a frequency change extreme value as a target, and in the second stage, the regulation quantity is optimized in combination with stability constraint, so that large frequency fluctuation caused by unreasonable gain setting is avoided through double guarantee, and the frequency stability of the power system is enhanced; a complex setting problem is disassembled into a sum setting stage and a fine setting stage, the solving difficulty is reduced, the efficiency is improved, meanwhile, due to the fact that key influence factors are included in the aggregation model, the frequency characteristics of the system can be accurately described, and reliable support is provided for setting.

A system for measuring the load of a cable (128) associated with a lifting hook (154) of a lifting system, such as a pipe layer (100), is described. The system includes a load cell (144) for acquiring load data describing the load on the hook (154) and a controller (160) designed to control a maximum hook lowering speed based on the load on the hook (154). The controller (160) can determine the maximum speed using sensor data, such as temperature data, as well as configuration data describing the design of the machine (100) and its components, such as the types of bearings, block and pulley configurations, lubricants, and other such machine configurations, to select a speed curve (342) from a predefined set of speed curves.The control (160) allows the hook (154) to lower to the maximum speed based on the speed curve (342) and can also allow adjustment based on a gain setting (324) to scale the maximum speed setting.

A portable ultrasonic device and a control panel of the ultrasonic device are characterized in that according to the layout of a traditional control panel, structures such as a pulling rod, a sliding rod, a trackball, a knob and the like which occupy a large space are redesigned, for example, a plurality of time gain compensation assemblies associated with a time gain compensation curve are arranged in a first operation area; the time gain compensation assembly comprises a first touch area for an operator to touch and operate, the first touch area comprises a plurality of first sub-touch areas distributed in the long axis direction, each first sub-touch area corresponds to one gain, and any first sub-touch area can generate a time gain setting signal when being touched by the operator. The time gain setting signal is used for setting the gain, corresponding to the depth of the time gain compensation component where the first sub-touch area is located, on the time gain compensation curve to be the gain corresponding to the first sub-touch area. The control panel is beneficial to light and thin design and waterproof and dustproof design.

Provided are a gain configuration method, device, medium and product, which relate to the technical field of communications, the gain configuration method comprising: detecting a first noise value of a base station; determining a target control instruction according to the first noise value; sending the target control instruction to target relay equipment; wherein the target control instruction is used for controlling the target relay device to adjust the uplink gain. The base station detects the noise level of the base station to control the uplink gain adjustment of the relay, that is, the noise condition of the base station is fully considered, and the uplink gain is controlled through the cooperation of the relay equipment and the base station, so that the rationality of controlling the relationship between the uplink bottom noise and the uplink gain can be improved; therefore, the rationality of uplink gain setting of the relay equipment can be improved.

A motor control device 1 according to one embodiment disclosed herein, whereby an appropriate initial gain can be set before starting automatic characteristic adjustment of a filter, comprises: a speed control loop 10 including a speed command creation unit 11 and a torque command creation unit 12; a signal input unit 13 for inputting a signal to the speed control loop 10; and an input / output response calculation unit 14 for calculating an input / output response, including the gain of a speed control loop input / output signal, from the output of the speed control loop 10 when the signal is input to the speed control loop 10; a condition setting unit 15 for setting a condition for determining whether or not to increase the gain; a condition comparison unit 16 for checking whether or not a condition for starting the automatic characteristic adjustment is satisfied by collating the input / output response calculated by the input / output response calculation unit 14 with the condition set by the condition setting unit 15; and a gain setting unit 30 for increasing the gain when it is determined that the input / output response calculated by the input / output response calculation unit 14 does not satisfy the condition for starting the automatic characteristic adjustment by the condition comparison unit 16.

The remote control device (6) is a remote control device (6) that controls one or more mobile bodies (2) via a network (1), and includes: a receiving unit (62) that receives mobile body information consisting of a first state quantity in the state quantity of the mobile body (2) and surrounding information around the mobile body; a track generation unit (63) that generates a target track (T1, T11, T12) for the mobile body (2) based on the surrounding information; a mobile body estimation unit (64a) that estimates the transmission delay of the network (1); a gain setting unit (64b) that sets a control gain based on the transmission delay; a control quantity calculation unit (64c) that calculates a control quantity for causing the mobile body (2) to follow the target track (T1, T11, T12) based on the mobile body information and the control gain; and a transmitting unit (65) that transmits the control quantity to the mobile body (2).

An operational amplifier (OPAMP) is biased with a tail current that varies with temperature and process in order to compensate for variations in amplifier bandwidth. A proportional to absolute temperature (PTAT) current source generates a PTAT current producing a reference voltage. A voltage-to-current generator circuit utilizing a differential amplifier circuit converts the reference voltage to a reference current from which the tail current is derived. Resistors coupled to the PTAT current source and the voltage-to-current generator circuit have resistance values dependent on operating temperature, wherein such resistors are matching of the resistors used for a gain setting circuit of the OPAMP.

Decision feedback equalization (DFE) is used to help reduce inter-symbol interference (ISI). Additional equalization may also be applied to an input signal using analog front-end (AFE) circuitry with, for example, a continuous-time linear equalizer (CTLE) and / or a variable-gain-amplifier (VGA). Circuitry replicating the receiver AFE is provided with the same gain setting and an offset correction signal as the receiver AFE circuitry. In addition, a common-mode DFE tracking signal is used to correct for common-mode offsets introduced by the DFE tap values. In this manner, as a monitor threshold voltage provided to the input of the replica AFE circuitry is adjusted (e.g., swept), the AFE replica and common-mode DFE tracking compensate for gain variation and common-mode offsets introduced by the AFE circuitry and common-mode offsets due to DFE tap values thereby reducing the inaccuracies in signal eye measurements that would otherwise be introduced without these compensations / tracking.

The present invention provides a control device. The control device is connectable to a microphone and a display device. The control device is configured to perform a microphone gain setting. The control device comprises an adjustment knob. The user only needs to press the adjustment knob of the control device, and the control device performs the microphone gain setting. At the same time, the display device displays information to prompt the control device to perform the microphone gain setting and to prompt the user to speak continuously to the microphone for a period of time. The control unit of the control device performs the gain on the sound. Furthermore, the display device displays information to prompt the user that the microphone gain setting has been completed.

A programmable gain amplifier that comprises: a transconductance amplifier, a switch leakage compensation circuit and a transimpedance amplifier. The transconductance amplifier provides a transconductance amplifier current signal and includes a switchable resistance network. The switch leakage compensation circuit provides a compensation current signal and comprises a switchable compensation resistance network. The transimpedance amplifier provides the output voltage signal based on the difference between the transconductance amplifier current signal and the compensation current signal. The switchable compensation resistance network comprises a plurality of branches in parallel with each other, wherein each branch includes: a gain-mimicking switch that has a corresponding gain-setting switch in the switchable resistance network; and a leakage-current-conducting switch in series with the gain-mimicking switch. The leakage-current-conducting switch is openable and closable in accordance with the complement of a switch control signal that is used to control the gain-mimicking switch in the same branch.

The utility model provides an earphone microphone sensitivity compensation calibration system and a sensitivity test device.The system comprises a main control module, a sound card power amplifier module, a sensitivity test module and an earphone module, and the main control module is provided with an acquisition unit, a comparison calculation unit, a gain setting unit and a sending unit; the acquisition unit is used for acquiring gain values of a main microphone and an auxiliary microphone of the to-be-tested earphone, so that the gain values of the main microphone and the auxiliary microphone of the to-be-tested earphone are respectively marked as a first gain value and a second gain value; the comparison calculation unit is used for comparing whether the first gain value is in a first gain value interval and whether the second gain value is in a second gain value interval. When the obtained gain value is out of the corresponding range, the absolute difference value between the gain value and the upper limit of the gain value in the corresponding range is obtained, and the difference value is written into the chip of the earphone to be tested, so that the sensitivity value calibrated last is used as the reference value in the subsequent earphone test, and the requirement of batch test can be met.

To provide an improved active type effect sound generation device and an improved active type effect sound generation method.SOLUTION: An active type effect sound generation device 10 outputting effect sound from a speaker 12 to a cabin of a vehicle driven by an electric motor comprises: a signal generating part which generates a first effect sound signal to cause the speaker to output effect sound; a second gain setting part which sets a gain according to a regeneration amount of the electric motor; and an output part 30 which generates a second effect sound signal by multiplying the first effect sound signal by the gain and outputs the second effect sound signal to the speaker.SELECTED DRAWING: Figure 1