62results about How to "High trigger accuracy" patented technology

A strain gauge sensor system and method for measuring the strain in a member, such as a fiber rope, has a sensor target assembly having a plurality of magnets carried spaced apart by individual gauge lengths along the member. Position and trigger sensor devices are configured spaced apart along side a desired path of travel of the member. When the member is fed along the desired path of travel, the trigger sensor device, in response to magnetically sensing a passing magnet, triggers the position sensor device to read the position of an adjacent passing magnet. The strain in the gauge length is determined from the read position. RFID tags placed on the member between the magnets can be identified by an RF reader to identify a particular gauge length being measured. The system can include a deployment device for feeding the member along the desired path.

A strain gauge sensor system and method for measuring the strain in a member, such as a fiber rope, has a sensor target assembly having a plurality of magnets carried spaced apart by individual gauge lengths along the member. Position and trigger sensor devices are configured spaced apart along side a desired path of travel of the member. When the member is fed along the desired path of travel, the trigger sensor device, in response to magnetically sensing a passing magnet, triggers the position sensor device to read the position of an adjacent passing magnet. The strain in the gauge length is determined from the read position. RFID tags placed on the member between the magnets can be identified by an RF reader to identify a particular gauge length being measured. The system can include a deployment device for feeding the member along the desired path.

The invention provides a sampling method based on software frequency tracking. Non-full-period sampling is adopted, the deviation of the non-full-period sampling is decreased to be lower than a specified value, standard full-period sampling is achieved, and measurement accuracy of the non-full-period sampling is improved. The invention provides a broadband voltage / current calibration device and a broadband power / phase calibration device adopting the sampling method based on software frequency tracking. The broadband voltage / current calibration device comprises a broadband voltage / current source, a broadband resistance voltage / current divider, a sampling digital voltmeter, a signal generator and a computer, wherein the broadband voltage / current source is connected with the sampling digital voltmeter through the broadband resistance voltage / current divider, the output end of the signal generator is connected with an outer trigger port of the sampling digital voltmeter, and the computer is respectively connected with the signal generator, the sampling digital voltmeter and the broadband voltage / current source.

The invention discloses a user intention identification-based vehicle-mounted device control method. The method comprises the steps of capturing an input signal triggered by a user action, performing response and processing on the input signal, and generating a user intention corresponding to the input signal by adopting a signal difference type triggering mechanism; generating a corresponding control interface according to the user intention; and controlling a corresponding vehicle-mounted device in a vehicle-mounted information system according to the input signal, in the control interface, of the user. The invention furthermore provides a user intention identification-based vehicle-mounted device control system. The system comprises a triggering module used for capturing the input signal of the user and generating the user intention corresponding to the input signal by adopting the signal difference type triggering mechanism, a control module used for generating the corresponding control interface according to the user intention, and a vehicle-mounted function module used for controlling the corresponding vehicle-mounted device in the vehicle-mounted information system. By implementing the technical scheme provided by the invention, the vehicle-mounted device can be controlled intelligently, simply and quickly.

The invention discloses a touch key circuit board function display and detection system. The system comprises a touch key circuit board detection device and a touch key circuit board function display circuit, wherein the touch key circuit board function display circuit is placed in the touch key circuit board detection device and is connected to a to-be-tested touch key circuit board on the touch key circuit board detection device. By connecting the mechanical touch key circuit board detection device to the to-be-tested touch key circuit board and communicating the display circuit, various input signals, for example, switching value, analog quantity, resistance variation amount and capacitance variation amount on the touch key are gathered, and the output signals control various indicating and sound image apparatuses on the touch key to work. As a display and test platform, the system disclosed by the invention not only can be used for displaying functions and performances of various thin film keys, but also can be used for an actual test in engineering.

The invention provides a high-trigger-accuracy oscilloscope. The high-trigger-accuracy oscilloscope comprises: a setting unit for setting comparison levels; a data sampling unit for performing digital sampling on a tested signal to obtain n sampled data, wherein n is greater than or equal to 1; a numeric comparison unit for performing the level comparison process on each sampled data separately according to a first high level and a first low level to generate n first comparison signals and performing the level comparison process on each sampled data separately according to a second high level and a second low level to generate n second comparison signals, wherein the first high level is less than or equal to the second low level; and a trigger control unit for performing the trigger logical process according to the comparison signals to generate a trigger signal. According to the invention, the level comparison process is performed on the sampled data through four comparison levels, so not only the noise can be eliminated, and but also the time error can be reduced, so that the trigger position which is expected by a user is more close to the trigger position which is generated actually, so the trigger accuracy can be improved.

The present invention discloses a display method and a terminal device. The terminal device comprises a first screen, a second screen and a control area, wherein the first screen, the second screen and the control area are located at different surfaces of the terminal device respectively; the method comprises the following steps of receiving a sliding input from the user on the control area; responding to the sliding input, and updating the display contents of the first screen and the second screen. The display method and terminal device can realize the quick start-up double-screen display function of the terminal device, and can also realize the single or synchronous shortcut operation of the double-screen, which are helpful to optimize the operation time, and the operation is simple, thetrigger is high, and the error triggering is avoided.

The invention discloses an intelligent electric control door lock which comprises a lock body, a lock tongue mechanism and a touch tongue mechanism. The lock tongue mechanism comprises a lock tongue and a lock tongue drive mechanism. The lock tongue drive mechanism comprises a swing arm, a lever, a first drive mechanism and a second drive mechanism. The lock tongue drive mechanism is configured with the two drive devices, each drive device is connected with the lever, and even if one of the drive devices is damaged, the other drive device can still work to complete unlocking and locking. Besides, the invention furthermore discloses an intelligent electric control door lock control method. The intelligent electric control door lock control method includes the steps that an operation instruction input by a user is received, a position signal of a front microswitch and a rear microswitch for detecting the touch tongue position is received, and the work state of the lock tongue drive mechanism is controlled according to the operation instruction and the position signal; a main drive device and a spare drive device are set; and whether the main drive device is normal or not is judged.

The invention discloses a wheel flange lubrication control method based on position information. The wheel flange lubrication control method based on the position information comprises the steps of subway vehicle running path presetting; trackside signal equipment laying, vehicle running position confirming, curved turning judging and wheel flange jet lubrication, wherein the wheel flange jet lubrication comprises a wheel flange lubrication system activation step, a flat road lubrication jet step and a curve lubrication jet step. When a wheel flange lubrication system is determined as an activated state and a vehicle is positioned in a curve turning position, a vehicle control system VCU transmits a jet instruction to the wheel flange lubrication system; after receiving the jet instruction, the wheel flange lubrication system carries out wheel flange jet lubrication according to the curve jet requirement; and the jet amount in the curve jet requirement is larger than that in the flat road jet requirement. The wheel flange lubrication control method based on the position information has the advantages that the desired jet position can be accurately positioned, system delay is reduced, the false jet frequency is reduced, the wheel flange wear is obviously reduced, the use time of a wheel is prolonged, the wheeltrack noise is reduced, the running resistance is reduced, the running cost is obviously saved and the social benefit is increased.

The invention provides a device for acquiring a signal triggering moment value. The device uses a GPS (global positioning system) component with long-term stability and high precision and a crystal oscillator with short-time stability and low cost. Pulse per second PPS outputted by the GPS component is subdivided through a programmable logic device, a frequency value outputted by the crystal oscillator is updated, so second-precise time of the arrival moment of a triggering signal is obtained, and NMEA information outputted by the GPS component is analyzed in real time to obtain corresponding information of year, month, day, hour, minute and second of triggering moment and satellite positioning state of the GPS component. Obtained information of year, month, day, hour, minute and second and the second-precise time of the arrival moment of the triggering signal are combined, and then an high-precision absolute time value of triggering moment of a distributed field test signal is provided. The device has the advantages of high triggering precision, freedom of periodic calibration, low cost, quick response speed and the like, is applicable to a distributed test system for testing field signals like sound field, pressure field and temperature field.

The invention discloses a clock synchronization and trigger device for a wireless distributed test system. The wireless distributed test system is composed of a test server, a switch, a gateway, an instrument and the clock synchronization and trigger device for the wireless distributed test system. Then the test server sends a command to the trigger device through the gateway, and the trigger device receives the command issued by the test server through the internal embedded module and then sends an instruction to the instrument or the digital logic unit so as to realize a corresponding function; specifically, each trigger device can autonomously adjust the frequency and phase of the output reference clock, so that the reference clocks of different instruments are synchronized; and the timing triggering of the plurality of instruments at the same time and the random triggering of the plurality of instruments controlled through wireless transmission are realized.

An external trigger device and an external trigger method based on a serial receiver, and an oscilloscope are disclosed. The external trigger device comprises the serial receiver used for acquiring external trigger data, an analog-digital converter used for acquiring data to be detected, and a processing unit used for determining a trigger point. On one hand, the sampling rate of the serial receiver to an external trigger signal is set to be the integral multiple of the sampling rate of the analog-digital converter to the signal to be detected so that the processing unit can correspond each data point in the data to be detected to one or more data points in the external trigger data in a parallel processing data process; when one data point in the external trigger data generates a triggerevent, the corresponding data point in the data to be detected can be conveniently found and the corresponding data point is taken as a trigger point; on the other hand, a traditional TDC circuit is not adopted so that the circuit structure of an external trigger device and the execution process of an external trigger method are simplified, trigger precision is guaranteed and simultaneously the hardware cost of a system is reduced.

The invention belongs to the field of high-power converting technology control, and specifically relates to a thyristor synchronization signal processing method applicable to changing frequency. The method comprises the following steps: filtering out the high-frequency component of an original synchronization signal through a first-order RC low-pass filter; converting the filtered synchronization signal into a square wave signal and inputting the square wave signal into a digital signal processor (DSP), and using a capture unit of the DSP to judge the frequency of the square wave signal; calculating the phase shift produced at the frequency based on the phase frequency characteristics of the filter; and predicting the zero-crossing point of a next-cycle synchronization signal based on the zero-crossing point of the square wave signal and the phase shift produced after filtering, and outputting a square wave signal of the same phase as the original synchronization signal to perform subsequent trigger pulse processing. The method has the advantages of accuracy, quickness, strong frequency tracking ability, and capability of improving the trigger precision of thyristor converters.

The invention provides a waveform triggering device. A comparison unit comprises a lower retardation comparison module and an upper retardation comparison module which receive triggering input signals simultaneously, the lower retardation limit of the lower retardation comparison module is lower than that of the upper retardation comparison module, the upper retardation limit of the lower retardation comparison module is greater than or equivalent to the lower retardation limit of the upper retardation comparison module, the upper retardation limit of the lower retardation comparison module is lower than that of the upper retardation comparison module, the lower retardation comparison module outputs first pulse signals, and the upper retardation comparison module outputs second pulse signals. A rising edge detection module receives the first pulse signals and outputs pulse rising edge detection signals in response to the rising edge of the first pulse signals; a falling edge detection module receives the second pulse signals and outputs pulse falling edge detection signals in response to the falling edge of the second pulse signals, and the pulse rising edge detection signals and the pulse falling edge detection signals are used for controlling formation of waveform triggering signals. According to the invention, the influence of signal noise on the triggering signals is lowered greatly, and accurate waveform triggering is supported.

The invention relates to a novel low-pressure triggering pressure lever instability shut-off valve, which comprises the following main components: a valve body, a valve seat, a valve clack, a rotating shaft, a valve cover, a valve rod, a spring, a piston, an air cylinder, a slender rod, a rod cage, a rod cap and the like, wherein the slender rod is a triggering component for shutting off a valve, and is designed according to the principle of pressure lever instability. When the pressure in a pipeline is higher than a specified point, a supporting force borne by the slender rod is lower than the pressure lever instability critical load of the slender rod, a pressure lever is kept stable, a valve clack catch is clamped at the lower end of the valve rod, and the valve is kept to be in the open state. When the pressure in the pipeline is lower than the specified point, the axial load borne by the slender rod exceeds the pressure lever instability critical load of the slender rod, the pressure lever is instable, the effective length of the pressure lever is instantaneously reduced, and at the moment, the valve clack catch is separated from the lower end of the valve rod, the valve clack rotates around the rotating shaft under the action of gravity, and the valve is closed under the push of fluid. The valve is simple in structure, is only provided with three moving components, and is very higher in reliability.

The invention discloses a key switch, which comprises a base, an upper cover, a sleeve member, an elastic member, a circuit board, an optical path guide structure, an optical emitter and an optical receiver. The upper cover is arranged on the base. The sleeve member is rotatably sleeved on the positioning post of the base and movably passes through the upper cover to connect the key cap. The elastic member abuts against the sleeve member and the base. The circuit board is arranged under the base. The optical path guide structure is formed to extend downwardly from the sleeve member. The optical emitter and the optical receiver are respectively arranged on two opposite surfaces of the circuit board, and the light of the optical emitter is incident into the optical path guiding structure forreflection to the optical receiver. When the key cap is pressed, the optical path guiding structure generates a trigger signal as the sleeve member moves downward to conduct or block transmission ofthe optical path established by the optical emitter and the optical receiver through the guidance of the optical path guiding structure. The invention can improve the triggering accuracy of the key switch and the problems of easy wear and tear of the switch assembly and complicated welding manufacturing process.

An optical keyswitch includes a keycap, a supporting mechanism having a protrusion disposed under the keycap to support the keycap to move downward or upward, and a switch module including a circuit board, an emitter, and a receiver. The emitter and the receiver are electrically connected to the circuit board. The emitter emits an optical signal to the receiver. When the keycap is not pressed, the receiver receives the optical signal of a first intensity. When the keycap is pressed, the protrusion moves along with the keycap, and the protrusion changes the optical signal received by the receiver to have a second intensity different from the first intensity, so the switch module is triggered to generate a triggering signal.

The invention relates to an image triggering device and a triggering method for a CCD precision target, which comprises a CCD camera, an optical lens, an integrated target frame, an image acquisitiondevice and an image triggering device. A pair of CCD cameras and optical lenses are respectively arranged at two base angles of the integrated target frame. The detection planes of the pair of CCD cameras and optical lens are parallel to each other. The CCD camera connects the image acquisition device and the image triggering device. The image acquisition device comprises a computer and an image acquisition card, and the image triggering device is connected with the image acquisition card. According to the image triggering device and the triggering method for the CCD precision target, which replaces the original light curtain triggering target of the CCD precision target, structure is simpler and cost is lower compared with the prior art. FPGA is adopted to process and analyze the image and send a triggering signal in real time, replacing the original delay triggering mode of the light curtain trigger, so that the triggering precision is higher and the instantaneity is stronger.

The invention aims to provide a wheel trigger device for a sentry box protection system. The device comprises wheels, a ratchet wheel, a frame, a clamping pin, a collision pin, an elastic clamping sheet, a spring, a transmission rod, a first pulley, a second pulley and a connecting rod, wherein the wheels are arranged at the bottom of a toll booth; a key groove and a clamping groove are formed on the ratchet wheel; the ratchet wheel is coaxial with the wheels and synchronously runs with the wheels through the key groove; one end of the clamping pin is arranged in the clamping groove of the ratchet wheel, and the other parts of the clamping pin are arranged in the frame; a protruding part is arranged on the clamping pin; the spring is arranged between the protruding part of the clamping pin and the frame and is positioned in a compressed state; one end of the elastic clamping sheet is fixed on the clamping pin, and the other end of the elastic clamping sheet is pressed against the frame and is positioned in an open state; the collision pin is arranged on the frame and can impact the elastic clamping sheet; one end of the transmission rod is connected with the sentry box, and the other end of the transmission rod is connected with the first pulley; the first pulley is erected on the connecting rod; and the second pulley is arranged in the connecting rod and is connected with the collision pin. By a purely mechanical trigger mode, the trigger precision is high, an electronic technology is not required, and the energy is saved.

The invention discloses a method for improving peak power measurement triggering precision, and belongs to the field of peak power measurement. According to the method, through automatic calibration of the trigger circuit and a multi-power-point interpolation algorithm, the trigger precision of the whole trigger dynamic range can be improved to be within + / -0.5 dB, and it is guaranteed that pulseenvelope signals can be triggered accurately and stably in the microwave peak power measurement process; through automatic calibration of the trigger circuit, the personnel efficiency is improved; andthe triggering precision is improved to be within + / -0.5 dB from the original + / -2dB, and is improved by 4 times, so that the triggering precision is higher.

The invention discloses a flexible sorting method of a swing arm sorting machine. In the process that each swing arm swings from a static state to a maximum opening position, firstly accelerated swinging for a period of time is carried out, and then uniform-speed swinging for a period of time is carried out. According to the scheme of the flexible sorting method of the swing arm sorting machine, the swing arm control mode is adopted, the swing arm can be lifted to a large angular speed at a large angular acceleration, then uniform-speed swinging of the swing arm is carried out at the speed, atthe moment, the driving force borne by the swing arm is far smaller than the driving force needed during acceleration, and therefore according to the force transmission characteristic, the thrust exerted by the swing arm on a parcel can be reduced, and meanwhile, the swing arm swings at a constant speed after moving to the maximum speed, so that a conventional striking mode can be changed into asoft pushing mode, and the breakage rate of the parcel is greatly reduced.

The invention relates to the field of intelligent transportation, in particular to a camera triggering method based on a laser radar. The camera triggering method comprises the steps of: acquiring aninitial road surface parameter through using a laser radar module, and setting a road surface change threshold value, wherein the initial road surface parameter is a laser radar module measurement distance or a laser radar module vertical road surface distance under a vehicle-free condition, and the road surface change threshold value is a change threshold value of an initial road surface parameter; measuring the distance to the road surface by means of the laser radar module, comparing an actual road surface parameter with the initial road surface parameter, and triggering a camera to photograph by the laser radar module when a difference value between the actual measurement distance or the vertical road surface distance of the laser radar module and the initial road surface parameter exceeds a set road surface change threshold value. According to the camera triggering mode, triggering can be started after parameters are set, manual adjustment is not needed, operation is easy, the whole triggering process is conducted through the laser radar module, the triggering accuracy rate depends on the ranging precision of the laser radar module, and therefore the triggering accuracy rate is high.

An optical keyswitch includes a casing having a movable portion, a shaft movably disposed on the casing, a resilient member accommodated in the casing, and a switch module including a circuit board, an emitter, and a receiver. The emitter emits an optical signal along an optical path to the receiver. When the shaft is at a non-pressed position, the movable portion has a first spatial relation with the optical path, and the receiver receives the optical signal of a first intensity. When the shaft moves, in response to a pressing force, to a pressed position, the shaft compresses the resilient member and pushes the movable portion to move, so the movable portion no longer has the first spatial relation with the optical path, the optical signal received by the receiver has a second intensity different from the first intensity, and the switch module is triggered to generate a triggering signal.

The invention discloses an adaptive protection helmet for a skull defect patient, and relates to the technical field of medical devices. The adaptive protection helmet comprises a helmet body. A solarpanel is fixedly connected with one surface of the helmet body. The two sides of the solar panel are each fixedly connected with connecting belts. The other end of each connecting belt is movably connected with a triggering device. The peripheral side face of each connecting belt is fixedly connected with a plurality of hook-and-loop fasteners. One surface of each hook-and-loop fastener is fixedly connected with the helmet body. The edge of the inner surface of the helmet body is fixedly connected with a supporting frame. A plurality of buffering covers are fixedly connected between the opposite surfaces of the helmet body and the supporting frame. The appearance of each buffering cover is of an arc-shaped structure. The inner arc surface of each buffering cover is fixedly connected witha triggering switch. One surface of the supporting frame is fixedly connected with a plurality of protection air bags. The joints of the protection air bags are communicated with one another through connecting air holes. Through the cooperation of the supporting frame and the protection air bags, the adaptive protection helmet has the advantage of comprehensively buffering and protecting the headof a wearer.

The invention discloses an interactive piano lamp unit. The interactive piano lamp unit comprises a piano key main body, a light-emitting assembly and an induction control module, wherein the piano key main body comprises a top plate, a light guide plate, a reflecting plate and a bottom plate which are sequentially arranged from top to bottom; the top plate, the light guide plate, the reflector and the bottom plate are connected in a flat attaching mode. The induction control module comprises a control circuit board and a single induction coil, the induction coil is arranged between the lightreflecting plate and the bottom plate, the light emitting assembly is arranged in the space range between the top plate and the light reflecting plate, and the light emitting assembly and the induction coil are both electrically connected with the control circuit board. According to the interactive piano lamp unit, a single piano key is independently designed, the size is small, the weight is light, the thickness is very small, and the anti-interference capability is high.

The invention discloses a point inspection method and device, relates to the technical field of data processing, and aims to solve the problem of low triggering precision of a point inspection task inthe prior art. The method comprises the following steps: acquiring historical point inspection data; acquiring real-time point inspection data; analyzing the historical point inspection data and thereal-time point inspection data to obtain an analysis result; and generating a point inspection task according to the analysis result and the real-time point inspection data. By utilizing the embodiment of the invention, the triggering precision of the point inspection task can be improved.

The invention discloses a trigger structure for a negative-tension automatic feathering system. The trigger structure comprises a speed reducer casing, a first control oil circuit and a negative-tension sensor. A propeller shaft which is connected with a screw propeller is rotationally arranged in a shaft hole in the speed reducer casing, and a tension bearing is mounted on an outer circle of thepropeller shaft. The first control oil circuit is connected with the negative-tension automatic feathering system, so that the negative-tension automatic feathering system can be triggered to work after the internal oil pressures of oil circuits of the first control oil circuit are lower than limit values, and the screw propeller can be automatically feathered. The negative-tension sensor is connected onto an end surface of an inner cavity of the speed reducer casing, is butted to an end of the outer side of the tension bearing and is used for sensing negative tension on the tension bearing inreal time, the negative tension is transmitted onto the tension bearing by the propeller shaft, and the negative-tension sensor is communicated with the first control oil circuit after the fact thatthe negative tension is higher than limit values is sensed, so that the oil pressures of the first control oil circuit can be reduced. Compared with the prior art, the trigger structure for the negative-tension automatic feathering system has the advantages that control procedures are simple, and the trigger structure is high in trigger precision; the magnitude of the negative tension can be sensed in real time, and the reliability of the negative-tension automatic feathering system can be improved when the negative-tension automatic feathering system works.

The invention discloses a method for improving the triggering accuracy of peak power measurement and belongs to the field of peak power measurement. Through the automatic calibration of the trigger circuit and the interpolation algorithm of multiple power points, the method of the present invention can improve the trigger accuracy of the entire trigger dynamic range to within ±0.5dB, ensuring accurate and stable trigger pulse envelopes in the microwave peak power measurement process Signal; the automatic calibration of the trigger circuit improves the efficiency of personnel; the trigger accuracy is increased from within ±2dB to within ±0.5dB, which is increased by 4 times, and the trigger accuracy is higher.