472 results about "Signal amplifier" patented technology

The invention relates to the technical field of battery testing, and provides a flow battery bipolar plate flow channel diversion performance testing device, which comprises an intelligent testing galvanic pile, which is composed of a plurality of detachable flow channel units, each flow channel unit comprises a bipolar plate and two flow channel frames, the flow channel frames adopt a modular design, and the flow channel units are connected with the intelligent testing galvanic pile; a plurality of micro pressure sensors, temperature sensors and flow sensors are embedded in the shell; the intelligent liquid path system comprises a plurality of independent liquid path circulating units, and each unit is composed of a liquid tank, an intelligent liquid pump, a liquid supply pipeline and a liquid return pipeline; a plurality of independent test chambers are arranged in the multifunctional shell, and a temperature and humidity control system and an intelligent drainage system are arranged in the shell; and the data acquisition and analysis system consists of a high-performance computer, a data acquisition card, a signal amplifier and analysis software. The problems that in the prior art, the local flow characteristic of the electrolyte on the surface of the carbon felt is difficult to accurately evaluate, and the requirement of optimizing flow channel design on refined data cannot be met are solved.

The utility model discloses an ear canal embedded hearing aid, which relates to the technical field of medical instruments, and comprises a bearing assembly, the bearing assembly comprises a first packaging shell, a second packaging shell and a filter screen, a signal processing piece and a lithium battery are respectively arranged in the first packaging shell, and the second packaging shell is provided with a second packaging shell. The signal processing piece comprises a signal amplifier, a filter and a central processing unit, and a micro air pump, a control switch, a potentiometer and a microphone are installed on the right side of the first packaging shell. The beneficial effects of the utility model are that through the arrangement of the miniature air pump, the air delivery pipe and the expansion anti-skid assembly, when the ear canals of different users have large differences or need to be worn stably, the miniature air pump can be controlled to work, so that air enters the hollow rubber ring through the air delivery pipe and the delivery pipe, and the hollow rubber ring is gradually expanded to be in contact with the ear wall; therefore, the wearing stability of the bearing assembly is ensured, and the sound definition after conversion of the receiver is ensured.

A system may include a digital front end (DFE). The DFE may be configured to generate a command signal. The system may also include a sweeper. The sweeper may be configured to generate an intermediate in-phase signal, an intermediate quadrature signal, and a LO signal based on the command signal. In addition, the system may include a mixer. The mixer may be configured to generate a mixed in-phase signal based on the intermediate in-phase signal and the LO signal. The mixer may also be configured to generate a mixed quadrature signal based on the intermediate quadrature signal and the LO signal. Further, the system may include an amplifier. The amplifier may be configured to generate an in-phase signal based on the mixed in-phase signal and an amplification setting. The amplifier may also be configured to generate a quadrature signal based on the mixed quadrature signal and the amplification setting.

The invention relates to a binding head device, a mounting method and die bonding equipment. The binding head device is used for picking up a chip and mounting the chip on a substrate, and comprises a force control detection module, a force control driving module and a mounting module; the force control detection module comprises a reference block, a photoelectric sensor and a signal amplifier, and the signal amplifier is in signal connection with the photoelectric sensor; the mounting module comprises a main shaft and a main shaft seat, the main shaft penetrates through the main shaft seat and can lift relative to the main shaft seat, and the working end of the main shaft is exposed out of the main shaft seat; the top end of the reference block is connected with the force control driving module; the bottom end of the reference block is connected with the transmission end of the main shaft; the photoelectric sensor is arranged on the spindle seat, one end of the photoelectric sensor emitting a light source extends into the spindle seat, the other end of the photoelectric sensor is connected to the signal amplifier, and the photoelectric sensor can emit the light source to the top end face of the reference block. And when the chip is in contact with the substrate, the signal amplifier determines the height variation of the reference block by detecting the light quantity variation reflected and received by the light source.

The invention relates to a fault detection method and system suitable for a vehicle body provided with a retarder, and relates to the technical field of vehicle body fault detection. The method comprises the following steps: acquiring and detecting a vehicle body state signal of a vehicle body; vehicle body dynamic signals of a vehicle body are obtained and detected; and accessing a buffer and enabling the retarder to enter a test mode to test the function of the retarder. The fault detection system is composed of a controller, a speed signal detection unit, a signal amplifier and a power supply unit which are connected with one another to work cooperatively. According to the method, the effects of comprehensively detecting the fault of the vehicle body provided with the retarder, effectively positioning the fault position and evaluating the fault condition are achieved.

The invention discloses a nonlinear dielectric constant measuring system based on a scanning nonlinear dielectric microscope, comprising: a probe, one end of which forms a micro capacitance Cs with the upper surface of a sample to be tested; the low-frequency signal module applies a low-frequency signal to the lower surface of the to-be-tested sample; the other end of the probe is connected with an LC resonance circuit in the probe module; the output end of a signal amplifier in the probe module is connected with a frequency modulation demodulator; the frequency modulation demodulator demodulates the frequency signal modulated by the probe module, removes a high-frequency carrier signal, inputs the demodulated signal into the lock-in amplifier, and detects, separates and amplifies a high-signal-to-noise-ratio signal by taking the frequency of a low-frequency signal applied to the sample to be tested as a reference frequency; according to the measurement system, the detection speed, the service life of the probe and the multi-material applicability can be remarkably improved, meanwhile, the thermal disturbance effect is inhibited, and a reliable solution is provided for accurate characterization of nano electronic devices.

A multi-winch connecting oil way comprises a variable pump station, an oil tank, a first signal amplifier and more than three executive components, feedback oil ways are further connected among the executive components and comprise an LS feedback oil way, an LX feedback oil way and an LY feedback oil way, the LS feedback oil way of the head executive component is connected with the control end of the first signal amplifier, and the LX feedback oil way of the head executive component is connected with the control end of the second signal amplifier. The LS feedback oil way and the LX feedback oil way of every two adjacent execution elements are connected, the LS feedback oil way and the LX feedback oil way of each independent execution element are connected in the corresponding execution element through a valve, and the LY feedback oil ways of the head execution element, the middle execution element and the tail execution element are connected together in parallel. The control signal feedback oil paths LY among the plurality of executive components are connected in parallel, so that the pressure differences among the executive components are consistent, and a certain executive component can be accurately controlled independently.

The invention relates to a dynamic ripple elimination circuit for a linear Hall signal amplifier, and belongs to the technical field of circuits. The dynamic ripple elimination circuit for the linear Hall signal amplifier comprises a ripple extraction network, a fully differential integrator, a chopper and a disappearance tone buffer which are connected in sequence, and the ripple extraction network extracts ripple signals in output signals of the amplifier; and through integration, chopping and buffering, a compensation signal for eliminating ripples is generated and injected into a main loop of the amplifier, and the ripples in an output signal of the linear Hall signal amplifier are eliminated. Therefore, a low-pass filter does not need to be adopted at the rear stage, adverse effects on the bandwidth are avoided, and the circuit is simple in structure and quite wide in application range.

The invention discloses a fuel cell internal partition current and temperature synchronous acquisition system and method, and relates to the technical field of fuel cell measurement. The system comprises a partition acquisition device, a data receiving module, a signal amplifier and an upper computer, the partition acquisition device adopts a split structure formed by nesting and assembling an inner mold and an outer mold; the inner mold comprises a contact layer and a transmission layer; the contact layer is provided with a plurality of conductive partitions and temperature sensors which are insulated from one another; the transmission layer is provided with a signal conversion unit for converting the partition current into a first voltage signal; the data receiving module is connected with the internal model and is used for acquiring a first voltage signal output by the signal conversion unit and a second voltage signal output by the temperature sensor, amplifying the signals through the signal amplifier and transmitting the signals to the upper computer; and the upper computer is used for analyzing the first voltage signal and the second voltage signal. By adopting the system, high-precision synchronous monitoring of the current and the temperature of the core area of the electric pile can be realized, so that control strategy optimization and fault diagnosis are effectively supported.

An amplification oil way of a winch comprises a variable pump station, an oil tank, executive components, a valve body assembly and a first signal amplifier, the input end of the variable pump station is connected with the output end of the oil tank, the output end of the variable pump station is connected with the input end of the first signal amplifier and the input ends of the executive components, and the valve body assembly is connected with the executive components. Feedback oil ways are arranged on the valve body assemblies, every two adjacent feedback oil ways are connected in series, the feedback oil way of one valve body assembly is connected with the control end of the first signal amplifier, and the output end of the first signal amplifier is connected with the control end of the variable pump station. And the reaction time between execution elements is too long.

The invention discloses a recommendation system based on user behavior analysis, and relates to the technical field of artificial intelligence and information recommendation, and the system comprises a front-end signal acquisition module, a layered pulse processing module, a differential signal amplification module and a recommendation strategy generation module. User behaviors are divided into three levels of millisecond-level instantaneous pulse, minute-level behavior wave and hour-level trend flow, and the relevance of behavior mutation of each level is extracted through a differential signal amplifier, so that the system can sensitively capture behavior changes of a user under different time scales, accurately insight into instant interests and long-term demands of the user, and improve the user experience. The system can quickly find the attention of a user to specific contents through millisecond-level instantaneous pulse analysis, and further understand the behavior preference and potential requirements of the user by combining the analysis of minute-level behavior waves and hour-level trend flow.

The invention discloses 5g industrial communication wireless gateway equipment and method. The 5g industrial communication wireless gateway equipment comprises a gateway body, and a power interface, an SIM card interface and an Ethernet port are sequentially arranged on the front surface of the gateway body from left to right; the protection device comprises a protection seat, the front end of the protection seat is open, the gateway body is arranged on the inner side of the protection seat, the baffles are symmetrically arranged on the inner side face of the protection seat, the first rubber pads are arranged on the side surfaces of the baffles and can abut against the gateway body, and the reinforcing plate is rotationally arranged on the front surface of the protection seat. The through hole is formed in the reinforcing plate; the beneficial effects of the invention are that through the arrangement of the protection device, the damage of external collision to the gateway body can be effectively reduced, the anti-collision capability of the gateway equipment is improved, and the gateway equipment adapts to the complex environment of an industrial field; a 5g signal is received and enhanced through the directional antenna and the signal amplifier, so that the signal strength and the transmission efficiency can be effectively improved, and the influence of signal attenuation and interference on data communication is reduced.

The invention discloses a high-energy particle position sensitive detector based on scintillator strips, and the detector is characterized in that the detector comprises a housing which is internally provided with a photoelectric device circuit board, a signal amplifier circuit board, and a scintillator strip array; the scintillator strip array comprises a plurality of cuboid scintillator strips with square end surfaces; the scintillator strips are arranged in four layers, and the scintillator strips in each layer are sequentially and adjacently arranged in parallel at an inclined angle of 45 degrees, so that the square end surfaces of the scintillator strips in the layer form a zigzag plane; two of the four layers are stacked up and down to form a first array unit, the other two layers are stacked up and down to form a second array unit, the square detection planes of the first array unit and the second array unit are parallel, and the length direction of the scintillator strips in the first array unit is perpendicular to the length direction of the scintillator strips in the second array unit; one end of each scintillator strip is connected with a photoelectric device on the photoelectric device circuit board; and the signal amplifier circuit board is connected with the photoelectric device circuit board.

The invention discloses a device for evaluating high-order cognition and emotion of children based on drawing pixel time sequence information, and the device comprises a drawing board and a built-in electromagnetic module which comprises a main control chip and an electromagnetic induction coil and is used for collecting the pixel time sequence data of an electromagnetic pen in real time; the electromagnetic pen comprises a pressure sensor, an electromagnetic transmitting coil, a pen point and a signal amplifier, and is used for transmitting position, pressure and timestamp signals to the electromagnetic module; the data processing module is connected with the electromagnetic module and is used for analyzing the pixel time sequence data and calculating at least 20 painting behavior characteristics; and the server is used for receiving the drawing behavior characteristics, performing characteristic selection, fusion and modeling on the drawing behavior characteristics through machine learning, and generating an evaluation report for scoring the children's thinking originality, flexibility, fluency and fineness. According to the method, the drawing process of the child is automatically and comprehensively recorded, and the high-order cognition and emotional state of the child is intelligently evaluated based on the process data of the touch pen pixel time sequence.

The invention relates to the technical field of signboards, and discloses a signboard for an electric power industry place, which comprises a mounting plate, an identification plate and a support plate, in the signboard, a surrounding alternating electric field is coupled with a panel induction electrode in an induction probe to form a weak alternating voltage signal; after the signal is processed by the signal amplifier, the filter and the signal conversion chip, the singlechip controls the buzzer and the lamp strip according to the processed signal; photosensitive sensors at four corners of the solar panel monitor angles with sunlight, a hollow shaft rotates to adjust the horizontal direction of the solar panel, and a rotating shaft rotates to adjust the vertical direction; during maintenance, sleeves symmetrically installed on the identification plate are pressed, the clamping blocks clamp the second circular truncated cones to move along the sliding rods to make contact with the first circular truncated cones, when the clamping blocks cross the attaching positions of the first circular truncated cones and the second circular truncated cones, clamping of the identification plate is relieved, and after maintenance is completed, the first circular truncated cones are inserted into the sleeves, and the first circular truncated cones are inserted into the sleeves. The clamping block and the first circular truncated cone are clamped again to complete locking.

The application provides a detection system for interface peeling defects of a steel shell inner wall and concrete, which comprises a detection device, and the detection device comprises a signal generator, a signal amplifier, a plurality of piezoelectric material sheet assemblies, a signal acquisition assembly and a data analysis processor which are electrically connected in sequence; the plurality of piezoelectric material sheet assemblies are attached to the outer wall of the steel shell at intervals to form an electromechanical coupling system. The piezoelectric material sheet is arranged on the outer wall of the steel shell of the steel shell concrete component as a driver and a sensor at the same time, the electromechanical coupling impedance spectrum of the piezoelectric material is measured in a self-generating and self-receiving mode, the abnormal value of the electromechanical coupling impedance spectrum is analyzed, the RMSD of the electromechanical coupling impedance spectrum of the measuring point and the reference measuring point is calculated, the sensor position corresponding to the abnormal signal is screened out, and thus the accurate positioning and range estimation of the interface peeling defects are realized.

The four-frequency vehicle-mounted signal amplifier comprises a shell, a base and a circuit board, an inner cavity is formed in the shell, a placing block is integrally formed on the lower edge of the outer wall of the corresponding side of the shell, a plurality of inwards-concave mounting grooves are formed in the outer walls of the left side and the right side of the shell, and the mounting grooves are arranged in the inner cavity. A fixing mechanism is fixedly connected to the interior of the mounting groove, the circuit board is arranged in the inner cavity, the base comprises a bottom plate, and the two sides of the bottom plate are fixedly connected with a fixed side plate and movably connected with a movable side plate correspondingly; the outer walls of the corresponding sides of the fixed side plate and the movable side plate are fixedly connected with a plurality of limiting blocks matched with the fixing mechanism, and the fixed side plate and the movable side plate are fixedly connected with the shell through matching of the limiting blocks and the fixing mechanism. According to the utility model, the problems that the signal amplifier is fixedly connected or is fixedly connected through a bolt, and when an internal circuit board of the signal amplifier needs to be overhauled, the signal amplifier needs to be disassembled by adopting an adaptive screw, so that time and labor are wasted are solved.

The utility model discloses a real-time positioning system for implanting a catheter in a potential guiding sheath. The real-time positioning system comprises a positioning electrode plate, a potential guiding instrument and a guide wire body, the positioning electrode plate comprises an adhesive tape adhered to the body of a patient and a plurality of electrode plates arranged on the adhesive tape; the potential guiding instrument comprises a shell, positive and negative electrodes, a current change display and a voltage and current regulator are arranged on the shell, and a current signal receiver and a signal amplifier are arranged in the shell; the guide wire body comprises an insulating sleeve and a metal guide wire arranged in the insulating sleeve, the front end and the rear end of the insulating sleeve are closed, and a plurality of through holes are formed in the side wall; the head end of the metal guide wire is exposed, and the other part is wrapped by the insulating layer. The positioning electrode plate and the wire guide body are respectively connected with positive and negative electrodes to form a closed loop. The intrathecal infusion system solves the problems that in the implantation operation process of the intrathecal infusion system, the position of the catheter needs to be adjusted in a perspective mode repeatedly, real-time monitoring cannot be achieved, and the developing quality is not high, operation precision and efficiency are improved, and the X-ray exposure amount of a patient is reduced.

The invention relates to a microwave signal amplifier comprising a chain of nonlinear inductive dipole elements each forming an asymmetric superconducting loop with Josephson junctions, said chain being arranged between an input of the chain for applying a signal to be amplified and an output of the chain at which an output signal is developed, the amplifier further comprising a controllable magnetic flux generation system for circulating a current in said loops, the amplifier further comprising a first microwave pump and means for coupling said input of the chain to the first pump, the first pump generating through the first coupling means a wave in the chain in the direction from the input to the output of frequency adjusted to transfer power at the frequency of the signal to be amplified.The device further comprises a second microwave pump and a second means for coupling said output of the chain to said second pump, the second pump generating through the second coupling means a wave in the chain in the direction from the output to the input, at a frequency different from that of the first pump and so as to attenuate in said direction from the output to the input the microwaves propagating at the frequency of the signal to be amplified. Figure for the abstract: Fig. 1.

1. Name of the product in this design: Waterproof Signal Amplifier (BETA4-IP). 2. Purpose of this design: This design is used for stage lighting signal amplification and transmission, data communication and exchange. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to the technical field of HDMI (High Definition Multimedia Interface) transmission, and provides an HDMI one-way transmission security enhancement method and device, and the method comprises the steps: determining the version, interface type and pin serial number and definition of an HDMI used in an application scene, and identifying whether an HDMI transmission channel is a one-way channel or a two-way channel; for a bidirectional channel which is not needed in an application scene, one-way transmission security enhancement is realized by adopting a physical cutting mode; for a bidirectional channel required by an application scene, one-way transmission security enhancement is realized by adopting a physical cutting-off and receiving end simulation substitution mode; for a one-way channel, a signal amplifier is adopted to realize one-way transmission security enhancement. According to the invention, unidirectional transmission security enhancement can be carried out on the HDMI native interface, so that the HDMI native interface has a pure unidirectional transmission characteristic, security risks such as sensitive data leakage of a receiving end are blocked, and the unidirectional transmission security of the HDMI is improved. Moreover, the system is improved based on a native interface, and has the advantages of low power consumption, small size, low cost and the like.

The present invention provides a working method for controlling a winch through a hydraulic system. In the hydraulic system, when a pressure compensating valve receives hydraulic oil, the pressure compensating valve outputs a path of hydraulic oil to drive an executive element to move, and at the same time, the pressure compensating valve outputs a path of signal oil to conduct a signal amplifier, thereby generating a load signal for a variable pump station. The variable pump station increases the output of the hydraulic oil. When the output of the hydraulic oil between the variable pump station and the executive element increases, the oil pressure and flow rate of the hydraulic oil both increase, thereby shortening the time for the hydraulic oil to be transported from the variable pump station to the executive element, shortening the reaction time between the variable pump station and the executive element, achieving a rapid response between the variable pump station and the executive element, and at the same time increasing the displacement of the output hydraulic oil, thereby achieving full load operation of the executive element at the maximum speed, and having good reliability.

In a radio wave emitting device of the present disclosure, the controller switches an operation of the device from a normal operation to a protection operation when, during execution of the normal operation, protection is necessary for at least one of signal amplifiers based on one or both of temperature measurement values and reflected-wave power measurement values. The normal operation includes setting an electric power target value for a radio wave to a normal target value for radio wave emitters. The protection operation includes setting the electric power target value for the radio wave to a protection target value for radio wave emitters. For one or both of a protection target radio wave emitter and a radio wave emitter other than the protection target radio wave emitter, the protection target value is lower than the normal target value. The protection target value is set so that a power consumption distribution in a cavity when executing the protection operation is closer to that when executing the normal operation than that when only the electric power target value of the protection target radio wave emitter is set to the protection target value.

To provide a signal generator that generates a plurality of low voltages and combines them in series to create a high voltage.SOLUTION: A handset for an electroporation device has an improved signal generator. The signal generator includes a primary winding and a plurality of secondary windings, where the secondary windings are coupled together in a series configuration. A storage capacitor and the fly-back diode are coupled to each of the secondary windings. The signal generator includes a signal amplifier and a power switch. The power switch is configured to supply a voltage from a power source across the primary winding.SELECTED DRAWING: Figure 2

The utility model relates to a comprehensive monitoring system for a pump station. The comprehensive monitoring system comprises a rectifier transformer, a first power management module, a second power management module, a water pressure sensor, a first voltage comparator, a signal amplifier and an electric control switch module, a water pressure sensor is used for collecting water pressure of a community water supply pipe to output water pressure detection voltage; when the water pressure of the community water supply pipe is higher than the preset water pressure value, the water pressure detection voltage is higher than the first reference voltage, and the first voltage comparator outputs low-level voltage; when the electric control switch module is cut off, the pump station motor is powered off and stops working; when the water pressure of the community water supply pipe is lower than or equal to a preset water pressure value and the water pressure detection voltage is lower than first reference voltage, the first voltage comparator outputs high-level voltage; the electric control switch module is switched on, the pump station motor is powered on to start working, the water pressure of the community water supply pipe is improved under operation of the pump station motor, and therefore the working state of the pump station is automatically controlled according to the water pressure of community water supply, and energy waste of the pump station is reduced.

The invention relates to a photoacoustic liquid viscosity detection device and method based on spectrum resolution, and belongs to the field of photoacoustic detection and liquid physical property analysis. The device comprises a solid-state laser, a collimating lens, a plane mirror, a plate-type semitransparent mirror, a microscope objective lens, a photodiode, a photoacoustic coupling cavity, a rectangular prism group, an ultrasonic transducer, a pre-signal amplifier, a digital oscilloscope and a computer. Pulse laser is focused to a liquid sample after being processed by an optical path to excite a photoacoustic effect, an ultrasonic transducer receives a signal and converts the signal into an electric signal, after a digital oscilloscope synchronously samples, a computer extracts a frequency spectrum full width at half maximum (FWHM) through fast Fourier transform, and non-contact detection is realized based on a negative correlation between the frequency spectrum full width at half maximum and viscosity. The method can overcome the defects of large sample size, mechanical contact and the like of a traditional method, and is suitable for high-precision viscosity detection of biological tissues and industrial samples in the field of biomedicine.

A wireless communication circuit and a transport device for sending rescue message are provided. The wireless communication circuit is arranged in a transport device for sending a rescue message to a cellular network and includes a radio transceiver, a signal amplifier circuit, a plurality of filters, and a first switch. The radio transceiver converts a baseband signal to a radio frequency signal and determines whether the cellular network has been connected. The first switch includes an input end and a plurality of output ends, and is electrically connected between the signal amplifier circuit and the plurality of filters. The first switch connects the input end and one of the plurality of output ends in sequence until the radio transceiver determines the cellular network has been connected. The wireless radio transceiver sends the rescue message through the first switch.

An optical signal amplifier using a praseodymium doped fiber is described. The optical signal amplifier includes a signal laser, a first optical isolator, a second optical isolator a pump laser, a wave division multiplexer, a silica based glass optical fiber, a second optical isolator, an optical power meter, and an optical spectrum analyzer (OSA). The signal laser generates a signal laser beam. The pump laser generates a pumped laser beam. The wave division multiplexer combines the signal laser beam and the pumped laser beam and generates a combined laser beam. The silica based glass optical fiber has a preferred concentration of praseodymium ions of about 50×1024 ions / m3 and a length of about 5.7 m. The silica based glass optical fiber receives the combined laser beam, amplifies photons in the combined laser beam, and generates an amplified laser beam.