103 results about "Signal analyzer" patented technology

The invention relates to the technical field of signal demodulation, and discloses an OFDM (Orthogonal Frequency Division Multiplexing) signal demodulation method of a signal analyzer. According to the invention, through joint optimization of a synchronous detection and frequency offset compensation mechanism, the symbol positioning precision in a low signal-to-noise ratio environment is improved, and subcarrier interference caused by a cyclic prefix pseudo peak value and frequency offset phase ambiguity is effectively suppressed; a time-frequency two-dimensional adaptive interpolation strategy is adopted to enhance the robustness of channel estimation to non-uniform pilot frequency distribution and a fast time-varying channel, and data subcarrier response distortion is reduced; in combination with minimum mean square error equalization and dynamic noise reduction processing, inter-symbol interference and a noise accumulation effect are greatly weakened, and the bit error rate performance of a high-noise scene is improved; the error control technology is updated through a closed-loop channel, a demodulation error propagation path is blocked, and cooperative improvement of system demodulation stability and precision in a complex multi-path environment is achieved.

The invention provides a wheel speed detection device and a chip system. The wheel speed detection device comprises a first comparator, a second comparator and a signal analyzer, the first comparator and the second comparator are respectively configured with different reference voltages, and the input end of the first comparator and the input end of the second comparator are used for receiving voltage signals generated by the same wheel speed sensor; and the signal analyzer is used for analyzing the wheel speed information according to the first comparison signal output by the first comparator and the second comparison signal output by the second comparator. Thus, the input signal is subjected to multi-threshold judgment by using a double-comparator structure, so that sensor signals of different current levels can be identified and analyzed uniformly, and compatible processing of sensor signals of multiple protocols is realized. Therefore, the problem that the overall system cost is increased due to hardware redundancy and system complexity increase in a traditional scheme is avoided, and the universality and the integration capacity of the interface module are effectively improved in a low-cost mode.

Disclosed are a system and a method for a high-speed performance measurement. The system includes: a fixing part; a positioner for controlling the rotation of the equipment by controlling the fixing part; a measurement probe; a curved reflective plate for reflecting, in the direction of the measurement probe, an electromagnetic wave radiated by the equipment and transforming the spherical wave of the measurement probe into a plane wave at the position where the equipment is provided; an arc structure including an arc arranged to be adjacent to the fixing part; a probe set including near-filed probes arranged to be spaced predetermined intervals apart from each other on the inner side of the arc; and a control unit, which receives, through a signal analyzer, signal data corresponding to an input signal from some of near-filed probes and the measurement probe.

A pad carrying an array of ECG electrodes can be used to measure ECG signal amplitudes and AMSA, a signal analyzer determines a cardiac position with respect to the pad, and an indication of cardiac position with respect to indicia can be provided on a top surface of the pad for output to the user to guide in performing chest compressions during CPR. The pad may integrate a defibrillator electrode. The apparatus may be an automated external defibrillator (AED).

The invention belongs to the technical field of baijiu perception analysis, and provides a baijiu flavor perception evaluation method based on electroencephalogram and surface myoelectricity, and the method comprises the following steps: S1, collecting electroencephalogram signals; s2, collecting surface electromyogram signals; s3, physiological electric signal preprocessing and analysis are carried out based on EEGLab and a signal analyzer in MATLAB, an electroencephalogram data analysis method comprises energy spectrum response and power spectrum density analysis of the brain to the Baijiu samples, and a surface myoelectricity analysis method comprises influence and spectrum analysis of different Baijiu samples on muscles. And carrying out Pearson correlation analysis by integrating the electroencephalogram and surface electromyogram signals with an artificial sensory evaluation result. According to the method, the physiological electric signals are fully used for representing the Baijiu sensing process, the Baijiu flavor sensing evaluation method is established from a relatively objective perspective, and the method has high application value and popularization potential.

The application provides a steam delivery pipeline leakage detection system, which comprises a metal conducting rod fixedly connected to the outer wall of a steam delivery pipeline, a sensor connected to the metal conducting rod, a signal analyzer electrically connected to the sensor, and a DCS control center electrically connected to the signal analyzer, and the sensor is used for collecting the vibration sound signal of the metal conducting rod. The steam delivery pipeline leakage detection system of the application can accurately and timely determine the leakage and the position of the leakage point by using the metal conducting rod connected to the steam delivery pipeline to transmit the vibration sound generated by the intense friction between the leakage medium and the pipeline wall, and the sound signal is not obviously attenuated in the transmission process due to the solid medium transmission, the transmission distance is long, and the sound signal is not easily interfered by other signals, the false positive rate of the leakage detection is effectively reduced, the operation and maintenance cost of the steam delivery pipeline is significantly reduced, and the industrial safety is improved.

A system (SYS) for supporting a medical procedure, comprising an interface (IN) for receiving at least one medical input signal that describes a state of a target anatomy. A signal analyzer (SA) is configured to analyze the medical input signal to determine a time window for deployment of a cardio-vascular device (CL) to be deployed by a deployment.

The present invention proposes a method and system for measuring the total radiation power of a 5G terminal in an active darkroom, which belongs to the field of 5G communication technology. It includes: a central processing unit sends a first instruction to a base station simulator, so that the base station simulator transmits a test signal for measuring the total radiation power of the 5G terminal, and the test signal is received by a 5G terminal placed on a two-dimensional turntable via a first antenna; after decoding the received test signal, the 5G terminal radiates the decoded test signal outward via its own antenna at a rated maximum transmission power, so that the second antenna continuously receives measurement data; a signal analyzer calculates the two-dimensional and three-dimensional directional patterns of the electromagnetic field based on the measurement data, and further determines the total radiation power of the 5G terminal. This method uses the gain directional patterns of the horizontal and vertical planes of the antenna to approximate the total radiation power TRP of the antenna, which improves the efficiency of the test and facilitates the realization and completion of automation.

The application provides a high-sensitivity optical fiber sensor and a distributed vibration detection system, and relates to the technical field of optical fiber sensors.The high-sensitivity optical fiber sensor comprises a sensor and a transparent plastic pipe, the right side of the sensor is fixedly connected with an optical fiber one, the outer wall of the upper part of the transparent plastic pipe is provided with a threaded wall, the threaded wall is threadedly connected with a hollow transparent pipe, and the outer wall of the upper part of the hollow transparent pipe is fixedly connected with four sliding rod groups at equal intervals.A hollow sliding ring is rotated, a pressing type infusion air bag is used to paste and fix colloid coating, the elastic potential energy of springs one and two is used to drive the hollow rod and the pressing rod to be extruded and fixed, the bending between optical fibers is avoided, the influence on the sensitivity of the sensor is avoided, different modules are matched, distributed vibration signals are detected, and then a signal amplifier and a signal analyzer are matched, so that the sensitivity of the sensor is improved, and the use requirement is better met.

This invention belongs to the field of communication technology, and particularly relates to a code Doppler verification device and method. An initial pseudo-random sequence C(t) is periodically sent from a signal source to a wireless channel simulator. The wireless channel simulator adds a code Doppler effect to the acquired initial pseudo-random sequence C(t) to obtain a pseudo-random sequence C′(t), and sends the pseudo-random sequence C′(t) and the initial pseudo-random sequence C(t) to a spectrum and signal analyzer. The spectrum and signal analyzer performs orthogonal demodulation and low-pass filtering on the initial pseudo-random sequence C(t) and the pseudo-random sequence C′(t) to obtain a pseudo-random sequence C0. n (t) and pseudo-random sequence C′ m (t), and the initial pseudo-random sequence C(t) and the pseudo-random sequence C n (t) and pseudo-random sequence C′ m (t) is sent to the host computer; the host computer, based on the initial pseudo-random sequence C(t) and the pseudo-random sequence C... n (t) and pseudo-random sequence C′ m (t) Verify whether the added code Doppler is consistent with the effect of symbol compression or expansion caused by the actual speed.

The invention discloses a device and method applied to a vehicle CAN physical layer test. The device comprises a power supply module, a universal meter module, an actuator module, an oscilloscope module, a controller local area network signal analyzer module, an upper computer module and an electronic control module. The power supply module is respectively connected with the actuator module and the electronic control module; the electronic control module and the controller local area network signal analyzer module are respectively connected with the actuator module; the actuator module is connected with the universal meter module and the oscilloscope module. And the controller local area network signal analyzer module is connected with the upper computer module. The vehicle controller local area network signal CAN physical layer testing device has the advantages that the mode of automatic switching is adopted, rapid fault injection is achieved, a large amount of time of testing personnel is saved, and the testing efficiency of the vehicle controller local area network signal CAN physical layer is greatly improved; the triodes are adopted as the switches, the switching speed is higher than that of traditional switches and relays, the cost of the whole test system is reduced, and the integrity of controller area network signals CAN is guaranteed.

1. The name of the design product: signal analyzer (UTS7000A). 2. The use of the design product: the design product is used for measuring frequency, amplitude, phase and modulation parameters, realizing functions such as frequency spectrum analysis and demodulation through frequency conversion and digital processing, and supporting wide-band signal analysis. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

An apparatus for generating a sound field description using an input signal having a mono-signal or a multi-channel signal includes: an input signal analyzer for analyzing the input signal to derive direction data and diffuseness data; a low-order components generator for generating a low-order sound field description from the input signal up to a predetermined order and mode; a mid-order components generator for generating a mid-order sound field description above the predetermined order or at the predetermined order and above the predetermined mode and below or at a high order, wherein the mid-order sound field description comprises a direct contribution and a diffuse contribution; and a high-order components generator for generating a high-order sound field description comprising a sound field component above the high order using a synthesis of at least one direct portion, wherein the high-order sound field description comprises a direct contribution only.

This invention provides a broadband signal analyzer, comprising: at least one superheterodyne frequency conversion receiving unit, at least one filtering unit, an ADC, a digital down-conversion and decimation filtering unit, an adaptive filtering unit, a data processing and display unit, and a scan controller, connected in sequence; the superheterodyne frequency conversion receiving unit includes: an attenuator, a mixer, and a local oscillator signal, the attenuator, mixer, and filtering unit being connected in sequence, the output terminal of the local oscillator signal being connected to the input terminal of the mixer, the input terminal of the local oscillator signal being connected to the output terminal of the scan controller, and the input terminal of the scan controller being connected to the output terminal of the ADC. This invention overcomes the problems of high filter order and excessive processing resource consumption caused by existing broadband signal in-band flatness compensation methods.

The utility model discloses an elevator wireless signal transmission frequency self-adaption optimization system which comprises a car top wireless signal transmission self-adaption device, a machine room wireless signal transmission self-adaption device, a car control unit, a control cabinet and a monitoring room control unit. The machine room wireless signal transmission self-adaptive device is in wireless connection with the car roof wireless signal transmission self-adaptive device, the car roof wireless signal transmission self-adaptive device is electrically connected with the car control unit, and the machine room wireless signal transmission self-adaptive device is in wireless connection with the monitoring room control unit. By adopting the first wireless transceiver and the second wireless transceiver, the signal connection coverage range of the wireless communication system can be improved, and the stability of the signal connection of the wireless communication system is improved in cooperation with the signal analyzer and the frequency generator; and manual intervention and management cost are reduced through automatic frequency adjustment of the frequency generator.

The application relates to the technical field of photoelectric measurement, and discloses a mode-locked laser phase noise measurement system without dispersion management, which comprises a signal generation unit, a signal adjustment unit and a signal measurement unit. The signal generation unit comprises a mode-locked laser for generating a laser signal, a frequency doubling module connected to the output end of the mode-locked laser, and a signal extraction and screening module connected to the output end of the frequency doubling module. The signal adjustment unit is connected to the output end of the signal extraction module and comprises a signal frequency shift module and a signal extraction module connected in sequence. The signal measurement unit is connected to the output end of the signal extraction module and comprises a low-pass filter and a signal analyzer. The mode-locked laser phase noise measurement structure is newly constructed, the problem that an accurate dispersion management unit needs to be added when a traditional dual-wavelength delay self-heterodyne method is used to measure phase noise is solved, and the overall structure is simple, the measurement is accurate, and the efficiency is high.

1. Name of the product in this design: Multifunctional Signal Analyzer. 2. Application of this design: This design is intended for use in information science electronic measuring instruments. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A sensing system for a mixture, comprising a sensing region containing the mixture. Within the sensing region is a sensor, which includes a printed circuit board (PCB), a transmitting electrode configured to generate an electric field, and a receiving electrode. The transmitting and receiving electrodes are configured to be in direct contact with the mixture. The sensor is configured to detect electrical parameter values ​​of the mixture. The system further includes a signal analyzer that determines the water content of the mixture based on the detected electrical parameters.

The embodiment of the invention discloses a wireless signal evaluation system. The system comprises at least one comprehensive signal analyzer and a remote terminal, the comprehensive signal analyzer comprises a spectrum analysis module, a map position module and an analysis training module, and the remote terminal is configured to obtain the equipment position information and the user information of the comprehensive signal analyzer through the map position module; determining candidate test parameters; based on the equipment position information of the comprehensive signal analyzer, the user information, the candidate test parameters and the grouping information of the comprehensive signal analyzer, determining the analysis difficulty of the candidate test parameters through a determination model; based on the analysis difficulty, simulation test parameters are determined, and the simulation test parameters are sent to the comprehensive signal analyzer; and in response to the obtained user analysis result of the comprehensive signal analyzer, determining a simulation test result based on the user analysis result.

The invention relates to a measurement system, including a signal analyzer or monitoring receiver, for measuring and analyzing modulated signals. The system includes a signal acquisition device having input port(s), wherein the signal acquisition device is configured to capture modulated signal(s) applied to the input ports, wherein each captured modulated signal can be represented as an I / Q signal; wherein the signal acquisition device generates at least two digital I / Q data streams based on the one or more modulated signals, wherein the at least two digital I / Q data streams are generated in parallel. The measurement system includes a selection device to select at least one target frequency bandwidth in each of the at least two digital I / Q data streams; and a signal processing device configured to analyze the at least two digital I / Q data streams in the selected target frequency bandwidths.

This system configuration is inexpensive and allows for the detection of units that would fail to detonate due to communication problems or malfunctions before blasting, thereby improving the safety of blasting operations. [Solution] The device consists of a transmitting unit 7 comprising a transmitter 4 and a transmitting antenna 6, and a detonation unit 10 including a receiving antenna 8 and a receiver 9. The detonation unit 10 is equipped with a light emission signal generator 14 that outputs a light emission signal in accordance with the radio waves received by the receiving antenna 8, a transmission cable 15 that transmits the light emission signal output by the light emission signal generator 14 to the opening of the borehole 2, and a light emission signal output means 17 positioned at the end of the transmission cable 15 on the opening side. Furthermore, a light emission signal reception and analysis unit 20 is installed at a position away from the working face S, consisting of a light emission signal receiver 18 that receives the light emission signal output from the light emission signal output means 17, and a light emission signal analyzer 19 that analyzes the light emission signal received by the light emission signal receiver 18. The detonation light emission caused by the explosion of the explosive 3 can be transmitted through the transmission cable 15.

The present invention discloses a read-write test device and method for evaluating the reliability of eMMC based on electromagnetic balance conditions. The method comprises an electromagnetic balance module, a read-write module, and a signal analyzer. The method comprises connecting an eMMC chip to be tested to the read-write module of the test device. The electromagnetic balance module provides a stable electromagnetic balance condition for the eMMC chip. The read-write module performs read and write operations on the eMMC chip. The signal analyzer monitors and records the signal waveform and signal strength of the eMMC chip during the read-write operation. Based on the data recorded by the signal analyzer, the reliability of the read-write operation of the eMMC chip under electromagnetic balance conditions is evaluated. The present invention uses read-write operations under electromagnetic balance conditions to evaluate the reliability of the eMMC, more accurately simulates the operating conditions in an actual use environment, and more comprehensively evaluates the reliability of the eMMC. This method can detect problems with the read-write operation of the eMMC early, so that timely measures can be taken to repair and optimize the problems, thereby helping to improve the quality of eMMC products.

The utility model relates to the technical field of elevator shaft settlement displacement detection, in particular to a device for detecting elevator shaft settlement displacement, which comprises a mounting plate and a displacement detection component, the displacement detection component comprises a mounting hole, a signal analyzer, a USB (universal serial bus) interface and a transmission rod, the mounting hole is fixedly connected with the mounting plate and positioned inside the mounting plate, and the signal analyzer is fixedly connected with the signal analyzer. The signal analyzer is detachably connected with the mounting plate and located on one side of the mounting plate, the USB interface is fixedly connected with the signal analyzer and located in the signal analyzer, and the transmission rod is detachably connected with the signal analyzer and located on the side, away from the mounting plate, of the signal analyzer. Therefore, the problem that certain potential safety hazards exist due to the fact that an elevator shaft settlement displacement detection device is not arranged on an existing additionally-installed elevator structure and an early warning system is not arranged when large settlement displacement occurs when an elevator is additionally installed on an old building as a newly-built foundation, the settlement rate of the newly-built foundation is different from that of an original building foundation is effectively solved.

The utility model discloses a soil moisture content detection system suitable for roadbed continuous compaction, which relates to the technical field of roadbed continuous compaction detection engineering and comprises a road roller body, a satellite positioner is arranged at the top end of the road roller body, a display screen is arranged on one side of the inner top of the road roller body, and a signal analyzer is arranged at the bottom of the display screen. A wheel shaft bracket is arranged at the outer bottom of the road roller body, a sensor is arranged on one side of the top of the wheel shaft bracket, and a pressing wheel is arranged in the wheel shaft bracket; a water content detection assembly is arranged on the outer side of the circumference of the pressing wheel. According to the utility model, the moisture content detection component is arranged on the pinch roller, so that the moisture content measurement equipment body can collect soil moisture content data in real time when the road roller runs, the laboratory analysis is not needed, the real-time feedback is provided, and the detection efficiency and the construction quality are further obviously improved.

1. The name of this design product: Portable signal analyzer. 2. Purpose of this design product: used for signal search, discovery, identification and positioning. 3. The key point of the design of this product lies in the shape of the product. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

This invention provides an axial conversion device for a multi-axis accelerometer sensor, belonging to the field of precision instrument testing. The device includes a sensor under test, a signal analyzer, and a housing. A first cable holder is located at one end of the housing, and a second cable holder is located at the other end. The first cable holder has multiple input terminals, which are electrically connected to multiple output terminals of the sensor under test. The second cable holder is electrically connected to the input terminal of the signal analyzer. An axial adjustment module is located inside the housing. The axial adjustment module includes a line switching device, output contacts, and multiple input contacts. The multiple input contacts are electrically connected to the multiple input terminals of the first cable holder, and the output contacts are electrically connected to the second cable holder. The axial conversion device for a multi-axis accelerometer sensor provided by this invention can solve the problems of low continuity and low safety in the prior art.

The invention relates to the technical field of neutron radiation detection, in particular to a diamond neutron detector based on an FPGA. Comprising a signal collector used for collecting neutron signals; the pre-amplifier is in communication connection with the signal collector and is used for automatically adjusting signal gain according to the intensity of the neutron signal; the main amplifier is in communication connection with the pre-amplifier and is used for performing gain adjustment on the neutron signal adjusted by the pre-amplifier so as to prevent the neutron signal from distortion; a multichannel signal analyzer which is in communication connection with the main amplifier and is used for collecting and analyzing the neutron signal after gain adjustment of the main amplifier; and the FPGA signal processor is in communication connection with the multichannel signal analyzer and is used for calculating the analyzed neutron signals to obtain the neutron peak value number. According to the invention, the pre-amplification circuit, the main amplification circuit and the FPGA digital signal processing unit are organically integrated, so that accurate counting, amplitude measurement and efficient time resolution of neutron signals are realized.

The invention belongs to the technical field of intelligent instruments, and particularly relates to an optical engine synchronous test system, which comprises a gasoline engine, a sensing system assembly and an acquisition system assembly, and is characterized in that the sensing system assembly comprises an angle sensor probe, a cylinder pressure sensor, an angle sensor conditioning circuit, an angle signal splitter and an image acquisition unit; the image acquisition unit comprises a machine vision system. The acquisition system assembly comprises a time sequence processing module, a combustion signal analyzer and an upper computer. According to the invention, through the image acquisition unit, the machine vision system, the endoscope, the high-speed camera and the light source, an image system of combustion in a cylinder can be acquired, and through the sensing system assembly, the angle sensor probe, the cylinder pressure sensor, the angle sensor conditioning circuit and the angle signal splitter, the combustion in the cylinder can be acquired. Through cooperation of the time sequence processing module, image and sensor acquisition synchronization is realized, shooting time is effectively controlled, redundant data is not generated, and engine combustion test analysis is facilitated.

The embodiment of the invention discloses a modulation signal evaluation management system, which comprises at least one comprehensive signal analyzer, a remote terminal and a management terminal, the comprehensive signal analyzer comprises a spectrum analysis module, a map position module and an analysis training module; the remote terminal is configured to obtain the equipment position information and the user information of the integrated signal analyzer; determining grouping information of the comprehensive signal analyzer; and based on the grouping information of the comprehensive signal analyzer, determining simulation test parameters, and sending the simulation test parameters to the comprehensive signal analyzer.

A system that enables safe cardiac pulsed field ablation by using multiple types of sensors on a patch to detect and cross-check that the heartbeat is in a safe phase to receive an ablation pulse. The patch may contain for example any or all of ECG electrodes, PPG sensors, accelerometers, and microphones. The patch may also contain one or more pulse return electrodes for unipolar ablation. A signal analyzer coupled to a pulse generator may receive sensor data from the patch and may analyze this data to determine the heartbeat phase. If data from different sensors are inconsistent, then pulse generation may be disabled as a safety feature. Otherwise, pulses may be enabled when the heartbeat is in a safe phase; for example, pulses may be excluded during the T wave.