30results about How to "Reduced measurement power consumption" patented technology

The invention provides a current measuring device which comprises a magnetic ring, a coil, a sampling resistor, a driving voltage source, a comparator, a differentiator, a first feedback unit and a second feedback unit, wherein the first feedback unit is used for acquiring a first feedback signal on the sampling resistor; the first feedback signal can be electrically connected with one input end of the driving voltage source; the second feedback unit can be used for acquiring the first feedback signal on the sampling resistor; after the first feedback signal is subjected to differentiation processing, a second feedback signal is obtained; the second feedback signal can be electrically connected with one input end of the comparator; and an output of the comparator can be electrically connected with the other input end of the driving voltage source. Due to the adoption of the current measuring device disclosed by the invention, a reverse control point of an output voltage of the driving voltage source arranged in a nonlinear area of a BH curve (magnetization curve) of the magnetic ring can be close to a real intersection point of the nonlinear area and a linear area as far as possible, the measuring range of a current to be measured is expanded, the measuring accuracy is improved and meanwhile, the power consumption of the measuring device in the measuring process is reduced. The invention also provides a current measuring method and particularly relates to the current measurement of a direct current or an alternate current on the basis of a magnetic modulation principle.

The invention discloses an excitation detection device for a low power consumption vibrating wire transducer. The device comprises an exciting circuit unit, a pickup vibrating circuit unit and a main control unit, wherein the main control unit comprises a pre-vibration module, a compound vibration module, a frequency detection module and a signal processing module; the signal processing module is used for recording effective compound vibration frequency signals, controlling the excitation detection flow of the transducer to enable the transducer to work in stable and unstable modes and computing the excitation frequency value output by the compound vibration module in the stable working mode according to the recorded effective compound vibration frequency values. The low power consumption vibrating wire transducer provided by the invention has the beneficial technical effects that the vibrating wire excitation modes are changed, the traditional low voltage swept excitation mode is changed to the pre-vibration and compound vibration combined excitation mode, and the frequency value during pre-vibration detection serves as the excitation pulse frequency of compound vibration, thus achieving the effect of saving energy.

The invention discloses an atmospheric corrosion rate online monitoring sensor which comprises a corrosion monitoring module, an MCU (Microprogrammed Control Unit) module and a communication module. The communication module is connected with the MCU module; the corrosion monitoring module comprises a metal film test piece, a constant-current source module and an AD / DA (analog-digital / digital-analog) differential circuit module; the metal film test piece is connected with the constant-current source module; the constant-current source module is connected with the MCU module; the metal film test piece is connected with the AD / DA differential circuit module; the AD / DA differential circuit module is connected with the MCU module and is used for measuring the resistance value of the metal film test piece. The atmospheric corrosion rate online monitoring sensor has the advantages of high resolution ratio, high sensitivity, good reproducibility, low cost, portability and the like, is suitable for continuously monitoring concentration variation of gaseous pollutants in the atmospheric environment in real time on line and particularly has a wide application prospect in monitoring low gaseous pollutants in the museum cultural relics storage microenvironment. Moreover, the atmospheric corrosion rate online monitoring sensor also has practical value for monitoring the living environment and the newly renovated living-room environment.

The invention discloses a composite vibrating wire sensor device for displacement measurement of three directions. The device comprises a detection unit, a switcher as well as an X-axis vibrating wire sensor head, a Y-axis vibrating wire sensor head and a Z-axis vibrating wire sensor head arranged inside a target to be measured, wherein the X-axis vibrating wire sensor head, the Y-axis vibrating wire sensor head and the Z-axis vibrating wire sensor head are in three directions perpendicular to one another, and the detection unit is used for excitation, vibration pick-up and displacement measurement of the vibrating wire sensor heads; and the detection unit controls the switcher to sequentially communicate with the three sensor heads according to a time sequence, thereby acquiring the displacement values of the target to be measured in three directions. The invention further provides a vibrating wire sensor excitation detection mode with low power consumption, which greatly reduces the energy consumption while realizing all-directional displacement measurement in the structure and meets the requirement of a sensor for long-time work under the unmanned and battery power supply condition.

An embodiment of the invention discloses a co-frequency cell detection method and a co-frequency cell detection device. The co-frequency cell detection method comprises the steps of: determining candidate cells through signal detection; selecting a fake cell from the candidate cells according to parameters corresponding to the candidate cells; and regarding the remaining candidate cells in the candidate cells as target cells. According to the co-frequency cell detection method and the co-frequency cell detection device, the fake cell is selected from the candidate cells according to the parameters corresponding to the candidate cells, and the remaining candidate cells in the candidate cells are regarded as the target cells, so that the interference of the fake cell can be eliminated, thereby reducing measurement power consumption without affecting detection performance of weak cells, and improving mobility of terminals.

The present invention provides an apparatus for current measurement, comprising a magnetic ring (12), a coil (10), a sampling resistor (14), a driving voltage source (18), a comparator (16), and a differentiator, and further comprising a first feedback unit (30), which acquires a first feedback signal from the sampling resistor, with the first feedback signal being electrically connectable to an input end of the driving voltage source; and a second feedback unit (20), which can acquire the first feedback signal from said sampling resistor, to obtain a second feedback signal after having the first feedback signal processed differentially, and the second feedback signal being electrically connectable to an input end of the comparator, with an output of the comparator being electrically connectable to another input end of the driving voltage source. The present invention further provides a method for current measurement. In particular, it is the current measurement of a DC or AC current based on the principle of magnetic modulation.

The invention relates to a vibration monitoring method, device and system for a moving article. The method comprises the steps that initial setting is carried out, and specifically a first measurement frequency, a second measurement frequency and a vibration intensity threshold are set, wherein the second measurement frequency is higher than the first measurement frequency; low-frequency monitoring is carried out, and specifically the vibration intensity of the moving article is measured through the first measurement frequency to acquire first vibration intensity data; the first intensity is judged, and specifically the first vibration intensity data are judged, and if the first vibration intensity data do not exceed the vibration intensity threshold, low-frequency monitoring is continued, otherwise high-frequency monitoring is carried out; and high-frequency monitoring is carried out, and specifically the vibration intensity of the moving article is measured through the second measurement frequency. According to the invention, the measurement requirements are met; the measurement power consumption can be significantly reduced; and the method, device and system have a great promotional value in the field of moving article measurement.

Method of collecting and measuring impulse current of field electron emission display modulation is an automatic measuring and controlling method for measuring field electron emission display modulation. The method is composed of a host computer PC contrl flow 1, a serial bus USB transmission mode 2, a lower computer FPGA main control, D / A conversion, collection amplifier operation flow 3 and collection mode of display measurement drive 4. The host computer sends order / data and receives measurement status information, the serial bus implements handshaking communication, the lower computer operates to receive order / data and send measurement status information, the display measures drive collection by useing spliced power with nine display characteristic points, three channel high-voltage gate impulse drives directly, one channel collection amplifier collects in rows. The host computer measurement and control proceeds measurement selection, theoretical arithmetic, voltage search, precision set and status inquiry, the lower computer main control proceeds gain selection, digital-analog conversion, voltage regulation, circuit switching, impluse drive, signal collection, waveform processing, logic detection and information feedback.

The invention discloses a device and method for detecting component concentration of mixed gas and application, the temperature of the mixed gas in a measuring gas chamber is regulated to be T1, a heating element is heated to the temperature of T1 + delta T, the temperature of the mixed gas is measured at the position with the distance L from the heating element, and the heating power of the heating element is fed back and adjusted, the temperature of the heating element is kept constant, so that the heat dissipated by gas heat conduction is equal to the electric power consumed by keeping the temperature of the heating element constant, and the heat conductivity coefficient of the combined gas can be measured. When mixed gas to be measured is sequentially adjusted to a plurality of temperatures, the heat conductivity coefficient of the mixed gas is measured by adopting the method, and then a multivariate linear equation set is established according to the heat conductivity coefficient of gas with known component types. The equation number of the equation set is greater than or equal to the number of unknown quantities to be measured, namely the gas concentration, and the linear equation set is solved according to a least square method to obtain the concentration of each gas in the mixed gas.

Disclosed are a signal measurement method and a device, and a computer readable storage medium, the method comprises: a network side configures a measurement period of a user equipment (UE) for measuring a reference signal (RS) in an activated state and an energy-saving state, or configures a transmission period of the measurement RS in the activated state and the energy-saving state of the UE; the network side configures a transmission window for measuring RS; and the network side sends the configured measurement period or sending period and the transmission window to the UE, sends a wake-upsignal wake up signal to the UE, and sends a measurement RS to the UE according to the sending period and / or the transmission window. The method can reduce the UE measurement complexity, reduce the UEmeasurement power consumption, reduce the power consumption of the base station side, and reduce the resource overhead.

The invention provides an indication method for measurement frequency points, a frequency point measurement method, a base station and a terminal. The indication method includes the following steps: first indication information of a plurality of interrelated to-be-measured different-frequency frequency points or second indication information of a plurality of interrelated to-be-measured different-frequency frequency point groups configured for a terminal is sent to the terminal; and the terminal selects one to-be-measured different-frequency frequency point for measurement from the interrelated to-be-measured different-frequency frequency points or the terminal selects one to-be-measured different-frequency frequency point group for measurement from the interrelated to-be-measured different-frequency frequency point groups. According to the embodiment of the invention, the terminal can be prevented from measuring all frequency points configured by a base station, the number of frequency points measured by the terminal can be reduced, the measurement power consumption of the terminal can be reduced, and the measurement opportunity of effective measurement frequency points can be increased.

The invention discloses an LTE terminal measurement cell selection method. The method comprises the following steps: after a measurement task is completed for the first time, recording, by a terminal,the current measurement cells as measured cells, and selecting N cells with the best signal quality from the measured cells to serve as tracking cells; tracking the timing deviations of the trackingcells to serve as the historical timing deviations of the tracking cells; in a non-first-time measurement task, estimating, by the terminal, the current timing deviations of the tracking cells; if thedifference values between the current timing deviations of the tracking cells and the historical timing deviations of the tracking cells are all less than a preset threshold value, selecting, by theterminal, a to-be-measured cell newly added by the present measurement task as the measurement cell for measurement; otherwise, selecting, by the terminal, all to-be-measured cells of the present measurement task as the measurement cells for measurement. By adoption of the technical scheme disclosed by the invention, the measurement power consumption of the terminal and the received data size areeffectively reduced while ensuring the accuracy of the measurement data reported by the terminal.

The invention discloses a multi-mode terminal measurement cell selection method, comprising the following steps: after a first measurement task is completed: the terminal records the cell measured this time as a measured cell, selects N cells with the best signal quality as tracking cells, and estimates the propagation path delay and strength of each tracking cell as historical propagation path delay and strength of the tracking cell; and in non-first measurement tasks: the terminal estimates the current propagation path delay and strength of each tracking cell, only measures the newly added cells to be tested if the deviation between the current propagation path delay and strength of the tracking cells no less than N / 2 and the historical propagation path delay and strength of the trackingcell is less than a preset threshold, and otherwise measures all the cells to be tested. The technical solution provided by the invention effectively reduces the measurement power consumption and theamount of received data of the terminal while ensuring the accuracy of the measurement data reported by the terminal.

The invention provides a terminal measurement scheduling method and a device. The method and the device are suitable for user equipment switching or service cell re-selecting in a wireless communication system. The method comprises the steps of acquiring the measurement quality of a cell, according to the measurement quality determining a predetermined measurement period corresponding to one of the frequency points of multiple different frequencies, and according to the predetermined measurement period measuring the quality of the cell on one of the frequency points of multiple different frequencies. The method and the device provided by the invention can reasonably use and distribute limited hardware resources for cell measurement, thus at the same time the accuracy of cell re-selecting and cell switching is effectively improved, the measurement power consumption of a terminal is reduced.

The invention discloses a component concentration detection device, method and application of a mixed gas, which regulates the temperature of the mixed gas in the measuring gas chamber to T 1 , the heating element is heated to a temperature T 1 +ΔT, at the same time measure the temperature of the mixed gas at the distance L from the heating element, and feedback the heating power of the heating element to keep the temperature of the heating element constant, so that the heat dissipated by the gas conduction is equal to the consumption of maintaining the constant temperature of the heating element The electric power can measure the thermal conductivity of the combined gas. When the mixed gas to be tested is adjusted to multiple temperatures sequentially, the thermal conductivity of the mixed gas is measured by the above method, and then a multivariate linear equation system is established based on the thermal conductivity of the gas with known components and types. The number of equations in the equation group is greater than or equal to the number of the unknown quantity to be measured, that is, the gas concentration, and the concentration of each gas in the mixed gas is obtained by solving the linear equation group according to the least square method.

The invention discloses a composite vibrating wire sensor device for displacement measurement in three directions, comprising a detection unit, a switcher, an X-axis vibrating wire sensor head and a Y-axis vibrating wire sensor head arranged inside the target to be measured , the Z-axis vibrating wire sensing head, the X-axis vibrating wire sensing head, the Y-axis vibrating wire sensing head, and the Z-axis vibrating wire sensing head are in three directions perpendicular to each other, and the detection unit is used for The excitation, vibration pickup and displacement measurement of the vibrating wire sensor head; the detection unit controls the switch to communicate with the three sensor heads in sequence to obtain the displacement values ​​in three directions of the target to be measured. The present invention also provides a low-power-consumption vibrating wire sensor excitation detection method, which greatly saves energy consumption while realizing the measurement of the omni-directional displacement in the structure, and satisfies the needs of the sensor under unattended and battery-powered conditions. Long working hours required.

The invention provides a time-of-flight depth camera and a noise-reducing distance measurement method of single-frequency modulation and demodulation. The time-of-flight depth camera includes: a transmitting module, including a light source, used to emit pulsed beams to an object to be measured; an acquisition module, An image sensor consisting of at least one pixel, each of which includes at least 3 taps, the taps are used to collect the charge signal and / or background light generated by the reflected pulse beam reflected back by the object to be tested Charge signal; processing circuit, used to control at least 3 taps to collect the charge signal alternately between at least 3 frame periods of the macro period, and receive the data of the charge signal to calculate the flight time and / or of the pulsed beam The distance of the object to be tested. The expansion of the measurement distance is no longer limited by the pulse width, and the tap rotation acquisition method is used to reduce or eliminate the fixed noise caused by the mismatch between the taps or between the readout circuits due to process manufacturing errors and other reasons.

The invention discloses a high-performance sound level meter based on an ANDROID operating system. The sound level meter comprises a housing, wherein the top of the housing is provided with a microphone, the interior of the housing is provided with an ANDROID mainboard, a power module and an analog collection board, the outer side of the housing is fixedly provided with a man-machine interaction module, and the microphone is electrically connected with the analog collection board; and the analog acquisition board, the power supply module and the man-machine interaction module are electrically connected with the ANDROID mainboard. The meter is advantaged in that a technical problem that an original sound level meter is limited in operation function is solved, the ANDROID mainboard is arranged in the sound level meter, collected data of multiple channels can be processed at the same time, the sound level meter can be applied to architectural acoustics measurement, hall tone quality measurement, sound power measurement and the like, the application range is wide, an ANDROID system is integrated, and the function is convenient to add.

The invention discloses an excitation detection device for a low-power vibrating wire sensor, which includes an excitation circuit unit, a vibration pickup circuit unit and a main control unit; the main control unit includes a pre-vibration module, a re-vibration module, a frequency detection module and a signal processing module , the signal processing module records the effective re-vibration frequency signal, and controls the excitation detection process of the sensor at the same time, so that the sensor works in two modes: steady state and unsteady state, and calculates the steady-state work according to the recorded effective re-vibration frequency value The excitation frequency value output by the re-vibration module in mode. The invention provides a vibrating wire sensor with low power consumption, which changes the excitation mode of the vibrating wire, changes the traditional low-voltage sweep frequency excitation mode into the excitation mode of pre-vibration combined with re-vibration, and detects the frequency during pre-vibration The value is used as the excitation pulse frequency for re-vibration, thus achieving the effect of energy saving.

The present disclosure provides an indication method for measuring a frequency point, a frequency point measurement method, a base station, and a terminal, said indication method comprising: transmitting, to a terminal, first indication information of a plurality of inter-frequency frequency points which are to be measured and associated with one another, or second indication information of a plurality of inter-frequency frequency point groups which are to be measured and associated with one another, the first indication information and the second indication information being configured for the terminal; and the terminal selecting, from the plurality of inter-frequency frequency points which are to be measured and associated with one another, one inter-frequency frequency point to be measured to perform measurement, or the terminal selecting, from the plurality of inter-frequency frequency point groups which are to be measured and associated with one another, one inter-frequency frequency point group to be measured to perform measurement.

The invention discloses a MEMS sensing device for electric field measurement based on a piezoelectric-magnetic anisotropy coupling structure. The device comprises piezoelectric materials. The bottom surface of the piezoelectric materials adheres to a bottom metal, and the top surface of the piezoelectric materials adheres to a ferromagnetic membrane and a metal electrode. The beneficial effect isthat: the device has a large measuring range, a high sensitivity, a fast transient response speed, an electric field measurement range with a wide band and a high field strength, a good temperature stability, a high integration degree and a small size; the device provides a high-performance, low-cost, safe and reliable electric field sensor for the fields of electric power systems, aerospace, meteorological monitoring and the like.

The invention is suitable for the technical field of communication, and provides a network measurement method and device, terminal equipment and a computer readable storage medium. The terminal equipment can obtain the cell information of the currently connected cellular network cell and inquire the search strategy corresponding to the cell information. Then, the terminal equipment can execute corresponding network measurement operation according to the search strategy, search the cellular network cell of the target network type in a targeted manner, improve the search efficiency, save the measurement power consumption, and prolong the endurance time of the terminal equipment; the invention solves the problem that the current network measurement scheme is high in measurement power consumption and affects the endurance time of the terminal equipment.

The invention discloses a multi-mode terminal measurement cell selection method, which includes: after the first measurement task is completed: the terminal records the cell measured this time as the measured cell, and selects N cells with the best signal quality as tracking cells; The propagation path delay and strength of the cell are used as the historical propagation path delay and strength of the tracking cell; in the non-first measurement task: the terminal estimates the current propagation path delay and strength of each tracking cell; if there are no less than N / If the deviation between the current propagation path delay and intensity of the two tracking cells and the historical propagation path delay and intensity of the tracking cell is less than the preset threshold value, the terminal only measures the newly added cell to be tested; otherwise, the terminal measures all The cell to be measured is measured, and the technical scheme of the present invention effectively reduces the measurement power consumption and the amount of received data of the terminal while ensuring the accuracy of the measurement data reported by the terminal.

Method of collecting and measuring impulse current of field electron emission display modulation is an automatic measuring and controlling method for measuring field electron emission display modulation. The method is composed of a host computer PC contrl flow 1, a serial bus USB transmission mode 2, a lower computer FPGA main control, D / A conversion, collection amplifier operation flow 3 and collection mode of display measurement drive 4. The host computer sends order / data and receives measurement status information, the serial bus implements handshaking communication, the lower computer operates to receive order / data and send measurement status information, the display measures drive collection by useing spliced power with nine display characteristic points, three channel high-voltage gate impulse drives directly, one channel collection amplifier collects in rows. The host computer measurement and control proceeds measurement selection, theoretical arithmetic, voltage search, precision set and status inquiry, the lower computer main control proceeds gain selection, digital-analog conversion, voltage regulation, circuit switching, impluse drive, signal collection, waveform processing, logic detection and information feedback.

The invention provides a time-of-flight depth camera and a distance measurement method for single-frequency modulation and demodulation. The time-of-flight depth camera includes a transmitting module, including a light source, for emitting pulsed beams to an object to be measured; an acquisition module, including at least one An image sensor composed of pixels, each pixel including at least 3 taps, the taps are used to collect the charge signal generated by the reflected pulse beam reflected by the object to be tested or the charge signal of the background light; the processing circuit is used to receive at least 3 taps The data of the charge signal of the tap; judge the data of the charge signal to determine whether the data of the charge signal includes the charge signal of the reflected pulse beam; calculate the flight time of the pulse beam and / or the distance of the object under test according to the judgment result. One frame of depth information can be obtained only by outputting three taps of signals in one exposure, thus significantly reducing the overall measurement power consumption and increasing the measurement frame rate.

The invention discloses an LTE terminal measurement cell selection method. The method comprises the following steps: after a measurement task is completed for the first time, recording, by a terminal,the current measurement cells as measured cells, and selecting N cells with the best signal quality from the measured cells to serve as tracking cells; tracking the timing deviations of the trackingcells to serve as the historical timing deviations of the tracking cells; in a non-first-time measurement task, estimating, by the terminal, the current timing deviations of the tracking cells; if thedifference values between the current timing deviations of the tracking cells and the historical timing deviations of the tracking cells are all less than a preset threshold value, selecting, by theterminal, a to-be-measured cell newly added by the present measurement task as the measurement cell for measurement; otherwise, selecting, by the terminal, all to-be-measured cells of the present measurement task as the measurement cells for measurement. By adoption of the technical scheme disclosed by the invention, the measurement power consumption of the terminal and the received data size areeffectively reduced while ensuring the accuracy of the measurement data reported by the terminal.

The invention provides a method and a device for acquiring analog signals. The method includes inputting standard voltages into an analog input end of an analog-digital converter; inputting to-be-measured analog signals into a reference voltage end of the analog-digital converter; acquiring digital signals outputted by the analog-digital converter; acquiring values of the to-be-measured analog signals according to standard voltages and the digital signals. The method and the device in an embodiment of the invention have the advantages that high-order signals can be directly measured; the amplitude of the standard voltages can be lower than the values of the to-be-measured analog signals, accordingly, requirements on reference voltages can be lowered, and the analog signals can be measured by the aid of the standard voltages with the low amplitude; the measurement accuracy can be improved.

The embodiment of the present invention discloses a method and device for same-frequency cell detection. The method includes: determining candidate cells through signal detection; screening false cells from the candidate cells according to the parameters corresponding to each candidate cell; The remaining candidate cells in the cells are used as target cells. In the embodiment of the present invention, the false cells are screened out from the candidate cells according to the parameters corresponding to each candidate cell, and the remaining candidate cells in the candidate cells are used as the target cells, so that the interference of the false cells can be eliminated, so that the weak cell detection is not affected. While improving the performance, the measurement power consumption is reduced, and the mobile performance of the terminal is improved.

The invention relates to the technical field of instrument and meter detection, in particular to a high-voltage excited Wheatstone bridge measurement method, which comprises the following steps of: S1, converting a bridge arm fixed voltage of a Wheatstone bridge into an excitation pulse voltage, cancelling fixed voltage supply, and dynamically adjusting the amplitude of the excitation voltage of excitation pulse according to a sensitivity coefficient of measured equipment; S2, when the excitation pulse voltage enters a stable holding interval, starting ADC sampling; and S3, when data sampling is completed, triggering the excitation pulse voltage for turning off the Wheatstone bridge, stopping the voltage supply to the Wheatstone bridge, enabling the whole to enter a descending interval, and stopping ADC sampling. By modifying a conventional bridge and introducing a pulse measurement mode, the driving voltage of the Wheatstone bridge can be greatly improved, the sensitivity can be improved, the measurement power consumption can be reduced, and the heating problem caused by long-term direct current power supply can be greatly reduced.