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31results about How to "Adjustment range" patented technology

High-amplitude picosecond balance pulse signal generator

ActiveCN104104362AImprove reliabilityThe amplitude of the pulse signal is largeElectric pulse generator circuitsRadar systemsNanosecond
The invention provides a picosecond balance pulse signal generator. The picosecond balance pulse signal generator comprises a pulse signal generation circuit, a first shaping circuit and a second shaping circuit. The pulse signal generation circuit comprises an avalanche triode pulse generation circuit which is formed by two cascaded avalanche triodes and used for generating a bipolar nanosecond balance pulse signal by an inputted negative polarity trigger pulse signal via triggering. The front end of the first shaping circuit is electrically connected with the pulse signal generation circuit and used for shaping the nanosecond balance pulse signal so that a picosecond pulse signal is generated. The front end of the second shaping circuit is electrically connected with the first shaping circuit and used for shaping trailing and overshoot of the picosecond pulse signal. The high-amplitude picosecond balance pulse signal generator is simple in structure and small and exquisite in circuit structure, and the generated balance pulse waveform is great in symmetry, small in trailing and high in amplitude so that the picosecond balance pulse signal generator can be applied to a pulse type ultra wide band radar system, and detection requirements of the pulse type radar system for different depth and resolution can be met.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI

Method and device for adjusting intelligent antenna calibration plate

ActiveCN103701535ASolve tedious, time-consuming problemsAdjustment rangeTransmitters monitoringAntennasSmart antennaEngineering
The invention relates to a method and a device for adjusting an intelligent antenna calibrating plate. The device is provided with the intelligent antenna calibrating plate, one or more plastic thin film(s) and a configuration device, wherein the plastic thin film(s) cover(s) the intelligent antenna calibrating plate and is or are used for adjusting a power amplitude value and a phase position value of the intelligent antenna calibrating plate; the configuration device is used for adjusting the intelligent antenna calibrating plate and comprises a net division meter and a quantized adjusting judging device, the quantized adjusting judging device is used for judging a phase position difference value and a power amplitude difference value between antenna ports of the intelligent antenna calibrating plate according to a signal of the net division meter, determining the power amplitude value needing to be adjusted and the phase position value needing to be adjusted according to the judged difference values and the product standard of the intelligent antenna calibrating plate and determining the position and the number of the plastic thin film(s) covering the intelligent antenna calibrating plate according to the values needing to be adjusted, and the quantized adjusting judging device also comprises a visual user interface capable of displaying a schematic diagram of the intelligent antenna calibrating plate and the position and the number of the plastic thin film(s) covering the intelligent antenna calibrating plate. Therefore, the quantized adjusting on the power amplitude value and the phase position value of the intelligent antenna calibrating plate can be realized.
Owner:ALCATEL LUCENT SHANGHAI BELL CO LTD

Staged porous charcoal, and preparing method and applications thereof

The invention discloses staged porous charcoal, and a preparing method and applications thereof, and belongs to the field of material preparation and application. One or two of potassium citrate or sodium citrate, adopted as a raw material A, and one or more than two of calcium citrate, iron citrate or zinc citrate, adopted as a raw material B, are fully mixed; a template agent and an activating agent are generated through high-temperature carbonization and self-activation so that addition of extra template agents and activating agents is not needed; and the staged porous charcoal having a micropore-mesopore-macropore structure having three types of pores is prepared through one step, omitting a step of secondary activation. The preparing method is simple, short in period, low in cost andenvironmentally friendly. Through adjusting the mass ratio of the raw materials, the pore sizes and distribution of micropores, mesopores, and macropores in the staged porous charcoal can be adjusted.The prepared staged porous charcoal is wide in pore diameter distribution, high in pore capacity and high in specific surface area, and has a certain graphene structure. A solid microextraction probeprepared by utilizing the staged porous charcoal can achieve trace detection of organic pollutants in water environments.
Owner:INST OF SOIL SCI CHINESE ACAD OF SCI

Large-amplitude high repetition frequency nanosecond balance pulse signal generator

The invention provides a large-amplitude high repetition frequency nanosecond balance pulse signal generator. The large-amplitude high repetition frequency nanosecond balance pulse signal generator includes a unipolarity pulse signal generation circuit and a balance pulse generation circuit, wherein the unipolarity pulse signal generation circuit includes a triode pulse generation circuit which is formed by triodes; each triode includes two cascades, has a cascaded connection design, and has avalanche effect; the unipolarity pulse signal generation circuit is used for generating a large-amplitude high repetition frequency nanosecond negative pulse signal, started by the input bipolarity start pulse signal; the front end of the balance pulse generation circuit is electrically connected with the unipolarity pulse signal generation circuit; and the balance pulse generation circuit is used for converting the large-amplitude high repetition frequency nanosecond negative pulse signal into a balance pulse signal, and generating a large-amplitude nanosecond balance pulse signal. The large-amplitude high repetition frequency nanosecond balance pulse signal generator has the advantages of being novel in design, being simple in the circuit structure, being high in the waveform symmetry of the generated nanosecond balance pulse signal, being low in the ringing level, being high in amplitude, and being high in repetition frequency, and being able to be applied to a pulse ultra wide band radar system to guarantee greater detection distance and good detection performance.
Owner:TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI

Photoelectric receiving sensor for incremental displacement measurement device

The invention discloses a photoelectric receiving sensor for an incremental displacement measurement device. The photoelectric receiving sensor solves the problems that displacement measurement precision is low, maintenance and debugging of finished products cannot be realized and optical signals cannot be output stably for a long term. The photoelectric receiving sensor comprises a photoelectric detector array, a summator, subtracters and a gain-variable amplifying circuit, wherein the photoelectric detector array outputs sinusoidal current signals corresponding to the optical signals, the gain-variable amplifying circuit receives the sinusoidal current signals, amplifies the sinusoidal current signals and converts the sinusoidal current signals into voltage signals, the summator sums the voltage signals output by the gain-variable amplifying circuit so as to obtain a direct-current voltage signal, the subtracters convert the voltage signals output by the gain-variable amplifying circuit into sinusoidal signals or cosine signals. The photoelectric receiving sensor adapts to multiple light source requirements and can analyze displacement information amount precisely, influences caused by light source nonuniformity and distribution nonuniformity of the photoelectric detector array are obviously reduced, the optical signals can be output by a light source stably for long term, and the photoelectric receiving sensor is adjustable in gain and simple in structure.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Jitter tolerance simulation verification method of clock data recovery circuit

The invention discloses a jitter tolerance simulation verification method of a clock data recovery circuit. The jitter tolerance simulation verification method is implemented through the following three modules: a test data generating module, a clock data recovery (CDR) circuit and an error code detection module, wherein the test data generating module generates a pseudo random sequence superposed with jitter information as an input of the CDR circuit, consists of a jitter modulating clock and a pseudo random code generating module, and is implemented via VerilogA language design; the error code detection module performs an error code detection on an output data file of CDR simulation, and is implemented through Python scripts. The jitter tolerance simulation verification method comprises the following two steps: first, simulating the test data generating module and the CDR circuit to obtain the output data file of the CDR; then, performing the error code detection on the output data file by using the error code detection module. By the jitter tolerance simulation verification method, the jitter resistance of the CDR is evaluated in a design stage, so that tape-out risks are effectively reduced; in addition, the jitter tolerance simulation verification method is easy to implement and short in verification time and has relatively strong practicability.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1

Intelligent electric cradle capable of conveniently pacifying baby

InactiveCN108433442AEasy to placeAppease suitable forCradleDrive motorEngineering
The invention discloses an intelligent electric cradle capable of conveniently pacifying a baby. The electric cradle comprises a cradle main body, a cradle support frame, a driving mechanism and a controller, wherein arc-shaped sliding blocks are symmetrically arranged at two ends of a length direction of the cradle main body; arc-shaped sliding grooves, which are matched with the arc-shaped sliding blocks, are formed in the cradle support frame; the driving mechanism comprises a drive motor, a speed-reducing rotary disc and a transmission rod; one end of the transmission rod is connected to an eccentric position of the speed-reducing rotary disc via a hinge and an electromagnetic pushing plate is connected to the other end of the transmission rod via a spherical hinge; a shaking magneticplate is arranged at the bottom of the cradle main body; and a sound sensor is arranged in the cradle main body. According to the intelligent electric cradle provided by the invention, as baby's crying is detected by the sound sensor, a system is started to automatically control the cradle to get shaking so as to pacify the baby, and the cradle is stable in shaking, safe and reliable and is relatively low in noise; and the cradle can achieve a good effect of soothing the baby and improve baby's sleep quality; therefore, the cradle is conducive to baby's growth.
Owner:成都普特斯医疗科技有限公司

Adjustable pressure sensor and using method thereof

The invention discloses an adjustable pressure sensor and a using method thereof and relates to the technical field of electronic devices. The device comprises a cylindrical base body, wherein a thermal resistor is arranged in the cylindrical base body and is of an annular structure; a plurality of guide grooves are formed in one side face of the cylindrical base body in the circumferential direction, guide pieces are slidably matched with the interiors of the guide grooves, and connecting rods are fixedly connected to the surfaces of the guide pieces; one end face of the connecting rod is fixedly connected with a pressure detection mechanism, and the pressure detection mechanism is matched with the thermal resistor in position. Through the design of the reset elastic piece, the thermal resistor, the spherical stress plate and the heat conversion element, when pressure acts on the spherical stress plate, a distance between the heat conversion element and the thermal resistor can be flexibly adjusted, and the heat conversion element is utilized to sense the temperature change near the thermal resistor, so pressure acting on the spherical stress plate is detected; compared with a traditional pressure sensor, output of capacitance or resistance variation is easier to measure.
Owner:烟台华皓电子科技有限公司

Transmission device for electrically tunable base station antenna

The invention discloses a transmission device for an electrically tunable base station antenna. The transmission device comprises a radome bottom plate, wherein one end of the radome bottom plate is vertically and fixedly provided with a radome side plate, the upper side of the radome bottom plate is horizontally provided with a threaded rod, one end of the threaded rod penetrates through the radome side plate and is coaxially and fixedly provided with an adjusting knob, the other end of the threaded rod is provided with an electric driving assembly in a matched manner, the threaded rod is coaxially sleeved with a movable seat, the movable seat is matched with the threaded rod in a threaded mode, a mounting block is fixedly arranged on one side of the movable seat, a ruler is horizontally and fixedly connected to the mounting block, a guide limiting mechanism matched with the ruler is arranged on the radome side plate, a mounting table is fixedly arranged on the other side of the movable seat, a supporting plate is horizontally and fixedly arranged on the mounting table, a pull rod is arranged on the upper side of the supporting plate in a matched mode, and one end of the pull rod is matched with a rotation control mechanism. According to the invention, the antenna of the electrically tunable base station can be accurately adjusted, the downward inclination angle can be adjusted, the horizontal direction can also be adjusted, and the effect of better optimizing the communication quality can be realized.
Owner:湖州同舟电器制造有限公司

Multifunctional car connector detecting system

The invention relates to a multifunctional car connector detecting system. The multifunctional car connector detecting system comprises a test table, a clamp, conveyor belt conveyors, a plurality of sorting box bodies and a mechanical hand, and further comprises a central controller, a label identifier, a rotary disc mechanism, a camera, an image identifying processor and a standard connector picture storage, wherein the conveyor belt conveyors and the sorting box bodies are separately arranged at the two sides of the test table; the label identifier is arranged on the conveyor belt conveyors;the clamp is arranged on the test table through the rotary disc mechanism; the camera is arranged at one side of the rotary disc mechanism; the camera is aligned to a terminal of the connector; the image identifying processor is separately connected with the label identifier, the camera and the standard connector picture storage; and the central controller is separately connected with the image identifying processor and the mechanical hand. Compared with the prior art, the multifunctional car connector detecting system has the advantages of being capable of quickly and accurately detecting the terminal of the car connector, effectively controlling flow-out of defective products and overcoming the defect that the car cannot be seen by a tool microscope and labor power.
Owner:SHANGHAI CHIEF LAND ELECTRONICS CO LTD

Side support structure for auxiliary installation equipment of air conditioner indoor unit

ActiveCN111977555AAdjust the deployment angleAdjustment rangeLifting framesElectric machineryMachine
The invention discloses a side support structure for auxiliary installation equipment of an air conditioner indoor unit. The installation equipment includes a base plate and a lifting machine. The side support structure includes a first side support, a second side support, a third side support, a fourth side support and an electric push rod which are arranged outside the lifting machine. The telescopic end of the electric push rod is hinged to the first side support, the motor end of the electric push rod is hinged to the lifting machine, the first side support and the second side support arein adjacent connection and in linkage, the second side support and the third side support are in adjacent connection and in linkage, the third side support and the fourth side support are in adjacentconnection and in linkage, second castors are arranged at the bottom ends of the first side support, the second side support, the third side support and the fourth side support, and clamping and fixing structures are arranged on the second side support, the third side support and the fourth side support. The side support structure can be automatically unfolded by one-key operation, is convenient to operate, does not occupy too much space, is convenient to fold, collect and move, and is good in side support stabilization effect, the risks of damage to equipment and indoor units can be reduced,and the safety and practicality are improved.
Owner:中筑科技股份有限公司

Respiration detection device and method and magnetic resonance imaging system

The invention provides a respiration detection device, a respiration detection method and a magnetic resonance imaging system. The respiration detection device comprises a transmitting coil, a receiving coil and a decoupling module, wherein the transmitting coil is configured to transmit a radio frequency signal for detecting the respiratory movement of a detected body; the receiving coil is configured to receive a respiration receiving signal, wherein the received respiration receiving signal comprises a radio frequency interference signal and a respiration modulation signal, the radio frequency interference signal is a signal that the radio frequency signal directly reaches the receiving coil through spatial coupling, and the respiration modulation signal is a signal that the radio frequency signal reaches the receiving coil after passing through the detected body and being modulated by the respiration of the detected body; and the decoupling module is configured to generate a cancellation signal corresponding to the radio frequency interference signal during scanning of the magnetic resonance system, and the radio frequency interference signal in the respiration receiving signalis cancelled by using the cancellation signal to obtain the respiration modulation signal so as to detect the respiratory movement of the detected body.
Owner:SIEMENS SHENZHEN MAGNETIC RESONANCE

Flapping-wing air vehicle driving device and flapping-wing air vehicle

The invention discloses an ornithopter driving device and an ornithopter. The flapping wing aircraft driving device comprises a driving bracket and a flapping wing structure, wherein the flapping wing structure is arranged on the driving bracket through a rotating shaft. The driving support is provided with an iron core, and the iron core is sleeved with a coil. The flapping wing structure is located above the iron core, a permanent magnet is arranged on the side, facing the iron core, of the flapping wing structure, when the coil is powered on, the coil and the iron core generate a magnetic field, and the magnetic field attracts or repels the permanent magnet, so that the flapping wing structure rotates close to or away from the iron core. According to the flapping-wing air vehicle driving device, current and reverse current are alternately supplied to the coil, vertical flapping of the flapping-wing structure can be achieved, power can be provided for the flapping-wing air vehicle, the flapping force degree, amplitude and frequency of the flapping-wing structure can be adjusted by adjusting the magnitude and turning frequency of the supplied current, and the flapping effect of the flapping-wing air vehicle is improved. Different lift forces and speeds are provided for the ornithopter, the driving modes of the ornithopter can be enriched, and the loading capacity of the ornithopter is improved.
Owner:BEIJING INST OF NANOENERGY & NANOSYST

A photoelectric receiving sensor for incremental displacement measuring device

The invention discloses a photoelectric receiving sensor for an incremental displacement measurement device. The photoelectric receiving sensor solves the problems that displacement measurement precision is low, maintenance and debugging of finished products cannot be realized and optical signals cannot be output stably for a long term. The photoelectric receiving sensor comprises a photoelectric detector array, a summator, subtracters and a gain-variable amplifying circuit, wherein the photoelectric detector array outputs sinusoidal current signals corresponding to the optical signals, the gain-variable amplifying circuit receives the sinusoidal current signals, amplifies the sinusoidal current signals and converts the sinusoidal current signals into voltage signals, the summator sums the voltage signals output by the gain-variable amplifying circuit so as to obtain a direct-current voltage signal, the subtracters convert the voltage signals output by the gain-variable amplifying circuit into sinusoidal signals or cosine signals. The photoelectric receiving sensor adapts to multiple light source requirements and can analyze displacement information amount precisely, influences caused by light source nonuniformity and distribution nonuniformity of the photoelectric detector array are obviously reduced, the optical signals can be output by a light source stably for long term, and the photoelectric receiving sensor is adjustable in gain and simple in structure.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Thread clamping equipment having shockproof function, illumination function and capacity of regulating thread clamping range of thread clamping head and applied to hosiery production

The invention provides thread clamping equipment having a shockproof function, an illumination function and capacity of regulating the thread clamping range of a thread clamping head and applied to hosiery production. The thread clamping equipment comprises a brush carrier, a fixing head, a thread clamping rod, the thread clamping head and a brush seat, wherein a plurality of threaded holes are formed in the brush carrier, one end of the brush seat is connected with the brush carrier through cooperation of screws and the threaded holes, and a plurality of brushes are arranged at the other end; the fixing head is connected with one end of the thread clamping rod, and the other end of the thread clamping penetrates through the brush carrier to be connected with the thread clamping head; the thread clamping rod is in slide fit with the brush carrier, a spring is arranged between the brush carrier and the fixing head, the brushes are matched with an adjusting sleeve, and a pin hole is formed in the fixing head. The thread clamping equipment for hosiery production solves problems about thread clamping of a hosiery production machine and has the characteristics of simple structure and convenience in use through matching of the brush carrier, the fixing head, the thread clamping rod, the thread clamping head, the brush seat and the brushes.
Owner:潘阿海
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