66 results about "Signal analyzer" patented technology

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 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.

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 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 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.

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 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.

The invention relates to a communication terminal, direct neural interface, communication set-up method, and registration method. One subject of the invention is a communication terminal comprising:- a first neural-signal analyzer able to determine a recipient user depending on a neural signal of a calling user using the communication terminal, the first neural-signal analyzer being able to trigger a connection, via a communication network, of the communication terminal with a recipient communication terminal associated with the determined recipient user. Thus, the communication terminal is able to be placed in communication with a called communication terminal regardless of the context: a handicapped calling user and / or calling user performing a manual task and / or calling terminal already being used for another current task by the calling user and / or noisy context, and / or inappropriate environment, etc.

This utility model relates to the technical field of measurement devices, and discloses a multi-path synchronous measurement device, including a vector signal generator and a vector signal analyzer. A signal storage unit is provided between the vector signal generator and the vector signal analyzer. The signal storage unit is used to sequentially receive and store multiple vector frequency signals generated in the vector signal generator, and to sequentially receive and store multiple acquisition frequency signals set in the vector signal analyzer. It also includes a controller and a device under test (DUT). The controller is electrically connected to the signal storage unit, and the DUT is electrically connected to both the signal storage unit and the vector signal analyzer. This utility model aims to increase measurement speed and improve testing efficiency.

A first detector that receives and detects 3-tone signals of three patterns of a first 3-tone signal obtained by combining three waves of angular frequencies ω1, ω2, and ω3 (here, ω2−ω1=ω3−ω2=Δω is established), a second 3-tone signal in which each tone has a phase offset, and a third 3-tone signal having a phase offset different from the phase offset of the second 3-tone signal, a BPF that allows only a beat component of an angular frequency difference Δω between adjacent waves of the 3-tone signals among signals output from the first detector to pass, a second detector that detects power of the beat component that has passed through the BPF, a voltmeter that measures a voltage of a signal output from the second detector, and a phase calculator that calculates a phase based on the measured voltage values of the three patterns.

Disclosed herein are devices, systems, and methods for recording bio-signals and / or stimulating tissue. In one aspect, an implantable medical device is disclosed comprising a conductive frame, one or more insulating layers disposed on the conductive frame, and at least one metallic component affixed to the one or more insulating layers. A first conductive element can be electrically coupled to at least part of the conductive frame and a signal analyzer and a second conductive element can be electrically coupled to the at least one metallic component and the signal analyzer. The signal analyzer can be configured to determine a voltage signal using the conductive frame as the reference electrode and the at least one metallic component as the active electrode. Alternatively, the signal analyzer can also determine a voltage signal using the conductive frame as the active electrode and the at least one metallic component as the reference electrode.

The embodiment of the invention discloses a remote terminal for comprehensive signal evaluation. The remote terminal is configured to obtain equipment position information and user information of a comprehensive signal analyzer; determining the assessment difficulty based on the equipment position information and the user information of the comprehensive signal analyzer; determining grouping information of the comprehensive signal analyzer based on the evaluation difficulty, determining simulation test parameters based on the grouping information of the comprehensive signal analyzer, and sending the simulation test parameters 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.

An event detection system (200) for determining occurrence of an event in an internal combustion engine (201) is disclosed, comprising: an ion current measurement circuit (107), a predetermined number of band limiter modules (203), a predetermined number of frequency domain conversion units (204), and an ion signal analyzer (206). The band limiter modules (203) generate band filtered ion current signals from received ion current signals generated during a spark event in a spark plug (106). The frequency domain conversion units (204) convert the band filtered ion current signals to a frequency domain to obtain digital ion current signals. The ion analyzer analyzes an amplitude of each of the digital ion current signals with an amplitude threshold of each of the digital ion current signals to determine occurrence of the event in the engine. Misfire detection ensures that the vehicle complies with OBD II regulatory specifications implemented by regulatory agencies.

To provide a phase characteristics measuring instrument and the like that uses a voltmeter and a wave detector not requiring a high-speed trigger operation to avoid increase in the scale of an apparatus used for phase measurement, and thereby can achieve phase measurement at a relatively low price.SOLUTION: A phase characteristics measuring instrument comprises: a first wave detector 11 that receives and detects two patterns of three-tone signals, a first three-tone signal obtained by combining the three waves of angular frequencies ω1,ω2,ω3 (wherein ω2-ω1=ω3-ω2=Δω) and a second three-tone signal obtained by changing the phase of one tone of the first three-tone signal; a BPF 12 that allows only a beat component of an angular frequency difference Δω of adjacent waves of the three-tone signal from the signal output from the first wave detector to pass therethrough; a second wave detector 13 that detects power of the beat component that has passed through the BPF 12; a voltmeter 14 that measures the voltage of the signal output from the second wave detector; and a phase calculator 15 that calculates the phase on the basis of the measured voltage value.SELECTED DRAWING: Figure 2

The invention discloses a high-temperature pipeline and a coating vibration test device thereof. The coating vibration test device comprises a pipeline vibration test bed and a heating temperature control system, the two ends of an austenitic stainless steel pipeline in the pipeline vibration test bench are elastically connected with the ground through spring vibration isolators, a cooling base is installed on the austenitic stainless steel pipeline, and an acceleration sensor is installed on the cooling base and connected with a signal analyzer through a low-noise signal line. The elastic water pipe is connected with the water tank, the water pump and the cooling base to form a circulation loop, the hose clamp is installed at the joint of the cooling base and the elastic water pipe, the vibration exciter is hung on a traveling crane through the elastic rope, and the vibration excitation rod is connected with the vibration exciter and the austenitic stainless steel pipeline. The cladding material is fixed on the austenitic stainless steel pipeline, an air heating pipe in the heating temperature control system is connected with the austenitic stainless steel pipeline through a flange, the PID temperature control box is respectively connected with the sheet type thermocouple and the air heating pipe, and the sheet type thermocouple is embedded in the cladding material.

The invention relates to an SDI line test system and method. The system comprises an SDI signal generator, an SDI signal analyzer, a fault positioning module and an electromagnetic interference simulation device. An SDI line to be tested is connected between the SDI signal generator and the SDI signal analyzer. According to the invention, the signal transmission reliability in the SDI line application scene can be improved, and the stable operation of related equipment and systems can be ensured.

The invention discloses a chip I / O interface monitoring system, a control method thereof and electronic equipment, and relates to the technical field of chip testing. The chip I / O interface monitoring system comprises an EMMC chip which comprises an I / O interface module, a signal conversion module, a data module, an idle pin module and a signal isolation module; wherein the first end of the I / O interface module is used for being electrically connected with the main control chip; the second end of the I / O interface module is electrically connected with the data module through the signal conversion module; the first end of the signal isolation module is electrically connected with the signal conversion module and the data module. The second end of the signal isolation module is electrically connected with the idle pin module; and the signal analyzer is electrically connected with the signal isolation module through the idle pin module. According to the scheme provided by the invention, the I / O interface module and the received or to-be-sent signal thereof can be effectively and reliably monitored under the condition that the I / O interface module is not influenced.