307 results about "Signal detector" patented technology

Various embodiments disclosed by the present invention include an exemplary system for remotely testing the continuity of electrical wiring, an electric vehicle charging system, and a charge coupler for an electric vehicle charging system. In an exemplary embodiment, the system for remotely testing the continuity of electrical wiring includes a signal generator configured to generate a signal having a predetermined frequency. A controlled impedance network is configured to attenuate the signal. The controlled impedance network can be electrically connected towards a first end of the electrical wiring, which is terminated at a terminal at the first end and can be electrically connected to the signal generator at a second end to carry the signal. A signal detector is configured to detect the signal.

The present application discloses a UWB signal-based vehicle monitoring method. The vehicle monitoring method comprises the following steps: signal transmission: transmitting a series of UWB signals by means of a UWB signal detector; signal reception: receiving, by means of the UWB signal detector, a UWB signal reflected back from a target object; signal analysis: analyzing, by means of a UWB signal processor, the received UWB signal to obtain monitoring data reflecting a state of the target object; and determination processing: on the basis of the monitoring data, generating a control signal by means of a system controller, and controlling a working state of a vehicle monitoring system by means of the control signal. The vehicle monitoring method of the present application enables effective perception and dynamic response to target objects around a vehicle body, improving real-time performance and accuracy of vehicle monitoring, and enhancing driving safety and system reliability.

1. Name of the design product: Signal detector. 2. Use of the design product: For signal detectors. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view.

The invention provides a gas flow field pressure measuring method and device based on a laser spectrum, which can be applied to the technical field of laser and the technical field of pressure measurement. The method for measuring the flow field pressure based on the laser spectrum comprises the following steps: emitting first laser to a to-be-measured gas flow field by using a laser, so as to induce the to-be-measured gas flow field to emit a filament signal through interaction between the to-be-measured gas flow field and the first laser; performing extraction processing on the light filament signal by using a signal detector to obtain target light intensity information corresponding to the to-be-detected gas flow field; according to a preset light intensity pressure calibration curve, performing inversion analysis on the target light intensity information corresponding to the to-be-measured gas flow field to obtain the target pressure of the to-be-measured flow field, the light intensity pressure calibration curve is established according to different gas pressures and spectral signals obtained after gas flow fields under different gas pressures are induced by laser.

The embodiment of the invention discloses an optical fiber connection detection system, method and device, a detector and a fiber clamping device.The optical fiber connection detection system comprises a signal generator, a server and the detector, the detector is installed on a first optical fiber port or the side where the first port is located, and the signal generator and the detector are both connected with the server; the signal generator is used for generating a detection signal from the second optical fiber port or one side corresponding to the second port, and the detector is used for generating corresponding feedback information to the server when receiving the detection signal. The server establishes a mapping relation between the first optical fiber port and the second optical fiber port, or determines whether the first optical fiber port and the second optical fiber port belong to the same optical fiber or are on the same optical fiber link according to the feedback signal; the problems of network structure adjustment and label nonstandardization caused by service development are effectively solved. By means of intelligent management, the situation that the site and information management records are inconsistent is reduced, and powerful support is provided for potential tapping of idle resources and quick service opening and maintenance.

The invention relates to the technical field of direct current systems, in particular to a double-magnetic-core current detection structure and a current detection method. The method comprises the following steps: acquiring an induced electromotive force signal detected by a signal detector in the dual-magnetic-core current detection structure in claim 1; and performing residual current demodulation on a second harmonic component signal in the induced electromotive force signal to obtain a residual current signal in the line to be detected. According to the invention, accurate detection of the milliampere-level tiny residual current is realized under a large-current working condition through the double-magnetic-core current detection structure and the current detection method, and a milliampere-level direct-current residual current signal is modulated to a high-frequency carrier wave by using a magnetic modulation principle, so that the signal-to-noise ratio is remarkably improved, and the detection precision is improved. The problem of detecting tiny signals under the background of large signals is solved.

The invention discloses an oil and gas pipeline sand content test sound wave optical fiber sensor, and particularly relates to the technical field of sensors, which comprises a rare earth doped silicon dioxide optical waveguide sheet, a vibration transduction structure, a phase shift waveguide grating and a phase shift wave. The device further comprises a photoelectric converter, a signal amplifier, a filter, a fragrance clamping filter and a vibration signal detector. The rare earth doped silicon dioxide waveguide sheet is located on the vibration transduction structure, and the phase shift waveguide grating is inscribed in the rare earth doped silicon dioxide waveguide sheet. The micro-vibration optical chip sensor based on the photoacoustic spectrum is simple and firm in structure, easy to manufacture and convenient to integrate with other systems, and the problem of integration of a traditional optical fiber distributed sensing system can be effectively solved.

The invention discloses a rectangular waveguide sealing window structure for realizing broadband transmission, which belongs to a microwave signal detection device and comprises a first rectangular waveguide cavity, a second rectangular waveguide cavity and a rectangular dielectric block arranged between the first rectangular waveguide cavity and the second rectangular waveguide cavity, the first rectangular waveguide cavity comprises a first rectangular waveguide shell and two first stepped transition structures embedded into an inner cavity of the first rectangular waveguide cavity, and the second rectangular waveguide cavity comprises a second rectangular waveguide shell and two second stepped transition structures embedded into the second rectangular waveguide shell. The opposite side faces of the two first stepped transition structures and the two second stepped transition structures are provided with identical tooth-shaped steps, the second rectangular waveguide shell is further internally provided with an installation cavity communicated with the second I-shaped sliding groove, the two waveguide cavities are connected through screws, and the rectangular dielectric block is fixedly installed in the installation cavity. The vertically symmetrical multi-stage stepped impedance matching network provided by the invention realizes excellent transmission performance with low voltage standing-wave ratio in a wide frequency band, and is suitable for a millimeter wave system with high power and wide frequency band.

The invention discloses a low-altitude logistics unmanned aerial vehicle anti-interference system, and the system comprises an environment sensing module which comprises a global sensing monitoring module, an intelligent analysis module and decision module, a multi-level anti-interference execution module, and a continuous optimization module; the global sensing monitoring module comprises a basic monitoring module and an enhanced monitoring module, the basic monitoring module comprises an electromagnetic spectrum sensor, a GNSS signal detector, a laser radar, a meteorological sensor and an unmanned aerial vehicle state sensor, and the enhanced monitoring module comprises an SDR spectrum analysis unit and an environment database access module; and the intelligent analysis module and decision module comprises an interference identification and risk quantification module and a decision verification module. The invention aims to provide the low-altitude logistics unmanned aerial vehicle anti-interference system, so as to solve the problems that the unmanned aerial vehicle only depends on a traditional electromagnetic sensor to identify fixed frequency band interference in low-altitude flight, so that missed judgment and misjudged judgment are caused, and the unmanned aerial vehicle is not influenced. And excessive response or insufficient response can be solved.

An integrated EEG-fNIRS neurofeedback system for interacting with participant's brain activity includes EEG electrodes, fNIRS detectors, at least one information receiver, a computation module, and a report generator. The EEG electrodes collect EEG signals. The fNIRS detectors collect fNIRS signals. The at least one information receiver receives and processes the collected EEG and fNIRS signals. The computation module executes an EEG and fNIRS signal processing pipeline with the EEG electrodes, the fNIRS detectors, and the information receiver. The computation module is further configured to: calculate score information based on received EEG and fNIRS signals; select a minimum score from the calculated score information; and discard an alternative score that is not selected as the minimum score, so as to enable the computation module to choose a single representative score for the shared target objective from both EEG and fNIRS signals. The report generator provides a report of the selection.

The invention discloses a non-intrusive wood internal cavity detection method based on Transform framework constraint. A plurality of signal detectors on a stress wave sensor are uniformly distributed around the same horizontal section of the surface of a forest; sequentially knocking each signal detector by using an electronic hammer, wherein a stress wave signal generated by each signal detector is received by the signal detectors at other positions; the signal processor calculates the stress wave speed information transmitted among the signal detectors, and visualizes a stress wave speed radiation diagram by using RGB (Red, Green, Blue) colors; correcting each wave velocity ray in the stress wave velocity ray diagram to obtain a corrected stress wave ray diagram; and inputting the corrected stress wave signal into a cavity identification model for processing, and outputting the position and the size of a visual forest cavity with defects. According to the method, accurate feature extraction of the stress wave signals is realized, the internal relation between the stress wave signal features is analyzed, and accurate detection of the forest internal cavity defect detection sensor is realized.

The embodiment of the invention provides an analog-to-digital converter, an electric quantity detection circuit and a battery management system. The analog-to-digital converter comprises a modulator, a digital filtering module, a signal detector and a selection circuit, the modulator is used for quantizing an input signal to output a quantized signal; the digital filtering module is connected to the modulator and is used for filtering the quantized signal; wherein the digital filtering module comprises at least two digital filters; the signal detector is used for detecting a signal parameter of the input signal, and the signal parameter comprises a frequency fluctuation degree and / or amplitude of the input signal; and the selection circuit is connected to the digital filtering module and the signal detector, and is used for adjusting the order of the digital filtering module according to the signal parameters. According to the analog-to-digital converter provided by the embodiment of the invention, different types of input signals can be adapted, so that optimal configuration of the different types of input signals is realized, and rapid and high-precision measurement is achieved.

The invention belongs to the technical field of security and secrecy, and particularly relates to a vehicle secrecy technology detection method and system based on a shielding tent. Constructing a signal isolation environment in the electromagnetic shielding tent; establishing a noise baseline model through spectral analysis; wireless terminal equipment detection is carried out through an all-standard terminal analyzer; a non-linear node detector, an infrared thermal imager, a near-field signal detector, a back scattering type X-ray machine and an endoscope are used for cooperatively scanning in different regions; and by combining algorithms such as big data and machine learning, positioning an overproof signal source, and if a suspicious device is found, disposing according to rules and obtaining evidence. According to the method, the problems of low standardization degree, high equipment false alarm rate, low implementation efficiency and low detection comprehensiveness when the vehicle is subjected to confidentiality technology detection in an open environment are solved. The method is suitable for eavesdropping, stealing and positioning device detection of secret-related vehicles.

The invention provides a chip pin multiplexing control circuit and a control method thereof, and a chip, the circuit comprises a multiplexing terminal, a chip power supply terminal, a power-on reset controller, a pin signal detector, a voltage detector and a debugging controller, the multiplexing terminal is used for receiving a general function signal and a debugging function signal; the power-on reset controller is used for sending a first enabling control signal to the pin signal detector during power-on; the pin signal detector is used for obtaining an input signal of the multiplexing terminal when enabling is confirmed according to the first enabling control signal, and sending the first control signal to the debugging controller; the voltage detector is used for detecting a voltage signal of a chip power supply terminal and sending a second control signal to the debugging controller; the debugging controller is used for confirming whether to enter a debugging mode according to the first control signal and the second control signal. By applying the chip pin multiplexing control circuit provided by the invention, the waste of chip pin resources can be reduced, and accurate identification of the debugging request signal is ensured.

According to an aspect of an embodiment, an optical network unit (ONU) in a passive optical network (PON) may comprise a physical media dependent (PMD) receiver, a detector, and a processing device. The PMD receiver may be configured to receive a downstream signal from an optical line terminal (OLT). The detector may be configured to measure a link quality parameter in the downstream signal. The processing device may be configured to identify a link quality parameter target, wherein the link quality parameter target is a value that achieves a target error probability. The processing device may be configured to compute a link quality parameter margin between the measured link quality parameter and the link quality parameter target, and adjust a transmission parameter based on the link quality parameter margin.

A circuit test device includes a housing. The circuit test device includes a circuit disposed in the housing and including an electromagnetic field (EMF) sensor and a signal detector coupled to the EMF sensor. The circuit test devices includes a conductor disposed on the housing and an interface extending through the housing and coupling the conductor to a circuit under test (CUT). The EMF sensor is configured to generate a signal in the presence of a time varying flow of current from the CUT in the conductor, and provide the signal to the signal detector.

Analyzers and methods of use are disclosed, including a blood analyzer comprising a light source to transmit an optical signal; a detector to generate data indicative of optical signal intensity; a transparent sample vessel between the light source and the detector; a dispensing device to pass a first portion of the blood sample comprising whole blood or lysed blood into the vessel at a first instance of time, and to pass a plasma portion of the blood sample into the vessel at a second instance of time; a controller to cause a processor to obtain first and second data generated by the detector, the first data indicative of the optical signal passing through the first portion of the blood sample and the second data indicative of the optical signal passing through the plasma, to determine a total absorbance spectrum in which the first data is adjusted by the second data.

1. The name of the design product: physiological signal detector. 2. The use of the design product: for continuous acquisition of human motion, skin temperature, pulse, blood oxygen, electrocardiogram, electroencephalogram, ambient light, air pressure and other signals. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The laser source generates an optical signal. The splitter splits the optical signal into a first signal and a second signal. The first modulator modulates a first signal. The second modulator modulates the second signal. The scanner scans the first signal after modulation by the first modulator. The coupler combines the modulated second signal and the modulated first signal after scanning the first signal. A detector detects an attribute corresponding to the combined modulated second signal and the modulated first signal, and captures a target based on the combined modulated second signal and the modulated first signal.

According to the signal coverage detection device, in the using process, a user installs the signal detector on the fixing support, and the height of the support is adjusted through the clamping piece. A user can select a proper height through a plurality of clamping grooves in the fixed bracket, so that the signal detector is located at the optimal detection position. The rotating connection of the clamping piece allows a user to easily adjust the height of the fixing support so as to meet the requirements of different scenes. Through the adjustment of the fixing bracket and the clamping piece, a user can accurately position the signal detector at an optimal detection position, so that the accuracy and the reliability of signal detection are improved. The fixing support can effectively fix the signal detector and prevent the signal detector from shaking or being unstable in the moving process, and therefore the accuracy and stability of the detection result are improved.

There is described a device (100) for analyzing particles of a sample, the device (100) comprising: i) an electromagnetic radiation source to illuminate the sample with electromagnetic radiation to thereby generate a scattered signal; ii) a detector to detect a first component (Ivh) of the scattered signal (101), and a second component (Ivv) of the scattered signal (102); and iii) a control device configured to: a) determine (110) the depolarization ratio (Ivh / Ivv) of the sample based on the detected first component (Ivv) and the detected second component (Ivh); b) calculate (122) a polarizability (α) associated with the sample, and c) determine (120) a shape characteristic (p) of the sample particles based on the depolarization ratio (Ivh / Ivv) and the polarizability (α).

The invention provides an electronic device. The electronic device comprises a radio frequency element, an electronic element, a coupler, a detector, a controller and an impedance matching circuit. The radio frequency element, the electronic element, the coupler, the detector and the impedance matching circuit are arranged on the substrate. The coupler generates a first coupled output signal in response to the first input coupled signal and generates a second coupled output signal in response to the second input coupled signal. The detector generates a determination signal according to the first coupling output signal and the second coupling output signal. The controller is arranged outside the substrate. The controller generates a control signal according to the judgment signal. The impedance matching circuit provides impedance of a transmission path between the radio frequency element and the electronic element in response to a control signal.

The invention relates to the field of switching power supply protection, and discloses a protection switching power supply which comprises a DC voltage module used for outputting a DC power supply voltage; the input end of the detection device is connected to the output end of the DC voltage module, and the detection device comprises a signal collector, a signal detector and a first logic output device; the signal collector is used for collecting an output voltage signal of the DC voltage module, and the signal detector is used for carrying out filtering and amplitude standardization processing on the collected voltage signal. The first logic output device is used for judging whether the voltage signal exceeds a voltage threshold value or not and judging a voltage change trend based on voltage data of a plurality of continuous sampling periods. Through the technical scheme of voltage abnormity identification and turn-off control based on voltage trend judgment, the effects of early identification and rapid protection of abnormal rise of the DC bus voltage are achieved.

The invention discloses a vacuum glass thickness measuring instrument, and relates to the technical field of vacuum glass thickness measurement, the vacuum glass thickness measuring instrument comprises a base and a PLC control system, and the top of the base is provided with a thickness measuring mechanism. When the device is used, when the laser thickness is measured, the main scattering detector rotates circumferentially to collect scattering signals generated when laser at different positions penetrates through the vacuum cavity; a forward small-angle scattering detector accurately collects small-angle area scattered light; the backward transmission signal detector collects a direct transmission light signal after the laser penetrates through the cavity, the direct transmission light signal serves as a laser energy reference value, vacuum degree misjudgment caused by laser power fluctuation is eliminated, a full-angle scattered field collection matrix is formed, and precise detection of the vacuum degree is achieved. And when the PLC control system judges that the vacuum degree is reduced, the thickness measuring mechanism is triggered at the first time to stop thickness measurement, the measurement result is judged to be invalid, and the accurate measurement result is not included.

This invention relates to a horizontal well-mounted, expandable optical fiber insertion device and its insertion method. The device includes a guide tube containing a guide head with a mounting groove. A support claw is rotatably mounted at one end of the mounting groove, and a spring is fixed to the inner side of the support claw. A sealing groove with a sealing ring is located on the outer periphery of the guide head's rear end. The middle portion of the optical fiber is fixed to the rear end of the guide head, and a steel wire rope is also fixedly mounted thereto. A pressure cap is fixed to the top of the guide tube. Both ends of the steel wire rope and the optical fiber pass through the pressure cap. Optical fiber signal detectors are connected to both ends of the optical fiber. A pressure tube is fixed to one side of the top of the guide tube, and a mud pump is connected to the other end of the pressure tube. This invention allows the optical fiber to be rapidly inserted from the surface into the bottom of a deep rock deformation monitoring horizontal well through the guide tube and securely fixed. During the safe lifting of the guide tube to the surface, the fixed guide head and optical fiber will not be pulled out, solving the problem of not being able to insert settlement monitoring optical fibers into horizontal wells.

1. Name of the Design Product: Signal Detector (S6). 2. Use of the Design Product: Detect cameras and radio signals. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective View 1.

The utility model discloses a filling mechanism of a liquid filling machine, which comprises a mounting table, the mounting table is provided with a filling mechanism, and the filling mechanism comprises a servo motor, a mounting disc, an accommodating barrel, a cylinder I, a positioning rod I, a positioning rod II, a limiting plate, a signal detector, a discharging plate, a filling assembly and a feeding assembly, the problems that due to the characteristics of the vitality agent filling bottles, the filling bottles are prone to toppling over in the filling process, so that part of the filling bottles fail in filling and need to be picked up again for filling, and the production efficiency in a factory is affected are solved.

The utility model discloses a user terminal signal detector and a user terminal signal detection system, and relates to the technical field of antenna signal detection. The user terminal signal detector comprises an RF (Radio Frequency) detection module, a forwarding module and an RF amplification module which are connected in sequence, the RF detection module is used for converting a terminal signal of a user into an analog electric signal and sending the analog electric signal to the forwarding module; the forwarding module is used for carrying out optimization processing on the analog electric signal and sending the optimized analog electric signal to the RF amplification circuit; and the RF amplification circuit is used for amplifying the optimized analog electric signal. The utility model also discloses a user terminal signal detection system. By adopting the user terminal signal detector and the user terminal signal detection system, the problem that the user terminal signal is difficult to detect in the prior art can be solved.

The invention relates to a structure analysis device (1) and to an associated method. The structure analysis device (1) comprises: a beam source (2) which generates an analysis beam (3) and is directed at a measurement point (4); a measurement signal detector (5) which detects portions of the analysis beam (3a) which are scattered or diffracted by a specimen at the measurement point (4) and converts said portions into an electrical measurement signal; and a reference signal detector (6) which detects reference radiation (3b) and converts said reference radiation into an electrical reference signal. The structure analysis device (1) also comprises electrical signal-splitting means (7) for dividing the electrical reference signal into a first and a second component, the first component having a static signal portion which substantially corresponds to the static signal portion of the electrical measurement signal, and means (8) for combining the first component with the electrical measurement signal to form an output signal (9) in such a way that respective static signal portions cancel each other out. The measurement signal detector (5) is mounted for movement with respect to the measurement point (4).

1. The name of this design product: Multifunctional signal detector (02). 2. Purpose of this design product: used for detecting radio signals and infrared signals. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.