71results about How to "Extended distance range" patented technology

The invention relates to an accurate simulation device and method of a radar target distance for a linear frequency modulation signal. The accurate simulation device is composed of a down conversion unit, an intermediate-frequency amplification unit and a delay unit. The down conversion unit is formed by a millimeter-wave down converter module and is used for converting a received millimeter-waveradar signal into an intermediate-frequency signal for post-stage processing. The intermediate-frequency amplification unit consists of a PXI bus programmable amplifier module and is used for amplifying an intermediate frequency signal amplitude after down conversion and carrying out adjustment based on different gain needs. The delay unit is composed of a baseband generating module, an I/Q modulator, and a power control module and is used for modulating a baseband signal to a carrier signal and carrying out amplitude control on the modulated signal. The baseband signal is used as the modulation signal, the received radar linear frequency modulation signal is used as the carrier signal for frequency modulation, and the frequency information set by the baseband signal reflects the distanceof the target. The method is implemented based on the idea of frequency modulation; and simulation of the radar target distance is realized.

A radar apparatus transmits a high-frequency transmission signal, and receives a signal of a reflective wave reflected by a target. Given a first code sequence of a first code length, a second code sequence of a second code length which is longer than the first code sequence, and a third code sequence obtained by inverting each code of the first code sequence, a first transmission signal obtained by modulating the first code sequence, a second transmission signal obtained by modulating the second code sequence, a third transmission signal obtained by modulating the third code sequence and a fourth transmission signal obtained by modulating the second code sequence are generated in a first transmission period, a second transmission period, a third transmission period and a fourth transmission period respectively.

A device for retrieving data from radio frequency identification (RFID) tags is disclosed. The device includes a mobile base, a robotic arm, and a data reading device. The robotic arm is attached to the mobile base. The data reading device employed to collect the data of electric tags is attached to the end of the robotic arm. A device for retrieving data from an RFID tag arrives at the position, where the electric tag is, by moving the mobile base and adjusting the height of the robotic arm. The movement is controlled according to the position and the height of the electric tag. Finally, the data reading device reads the data stored in the electric tag.

The invention discloses a shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device. The shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device comprises a shaft furnace discharge device, an electric arc furnace, a buffer weighing warehouse arranged at an outlet of the shaft furnace discharge device, and a small-dip angle conveying device which is arranged between an outlet of the buffer weighing warehouse and an inlet of the electric arc furnace and is used for conveying a material. The small-dip angle conveying device comprises a feeder, a small-dip angle conveying pipe, a movable elephant trunk and a fixed elephant trunk. The feeder and the small-dip angle conveying pipe are provided respectively with vibrating devices. The shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding device overcomes defects of the existing device, reduces shaft furnace height, device production and maintenance costs, and a one-time investment, enlarges a shaft furnace-electric arc furnace distance range, and has a simple, compact, safe and reliable structure. The invention also discloses a control method of shaft furnace-electric arc furnace direct reduced iron continuous hot-feeding. The method utilizes a sensor and a PLC controller to realize real-time monitoring and parameter adjustment, can be operated flexibly, has high safety and is suitable for continuous production.

A photon detector is disclosed that includes, in addition to an immobilisable photon-sensitive element, a photon transmission element. The photon detector is configured such that it can vary photon intensities impacting upon the photon-sensitive element and transmitted by the photon transmission element, for example, by modifying an absorption property or a defocussing property of the photon transmission element. Also, the immobile photon-sensitive element, which can be, for example a SPAD (Single Photon Avalanche Diode), always operates close to the optimal operating range and below an immobilisation range. A distancing device that includes this type of photo detector is also disclosed.

A solid-state imager in a reader for electro-optically reading indicia located in a range of working distances includes an array of image sensors for capturing light from the indicia over a field of view during the reading. The range of working distances in which the indicia are read is varied, either automatically or manually.

According to an embodiment of the present invention, an optical parametric oscillator (OPO) (e.g., for a laser transmitting device) includes non-linear optical media, optical beam manipulating elements, and a narrow linewidth filter in the form of a rotatable grating. The grating enables rapid tuning of the oscillator to provide an output beam with a desired wavelength. A pump laser provides a pump laser beam, and the non-linear optical media convert the pump beam into light beams with a signal wavelength and an idler wavelength. The angular positions or orientations of the non-linear optical media relative to a longitudinal propagation axis of the optical parametric oscillator (OPO) are adjustable to effectively tune the resulting signal and idler wavelengths. An output coupler receives the resulting beams from the non-linear optical media, and emits beams with the desired wavelength (signal and/or idler wavelengths).

Provided are a method for controlling a beamforming antenna to enhance transmitting/receiving performance and a wireless communication device performing the same in a TDMA-based wireless communication system. The wireless communication device includes a beamforming antenna, which is configured with omnidirectional antennas, including a central antenna and a plurality of parasitic antennas and a controller controlling a beamforming direction of the beamforming antenna by analyzing a signal received from other station. The method for controlling a beamforming antenna includes analyzing, by a wireless communication device having a beamforming antenna, which is configured with omnidirectional antennas, including a central antenna and a plurality of parasitic antennas, a signal received from other station to control a beamforming direction of the beamforming antenna.

The invention discloses a millimeter-wave dual reflector antenna capable of focusing a near-field wave beam. The antenna comprises a main reflector, an auxiliary reflector and a feed source, wherein a wave beam emitted by the feed source is reflected by the auxiliary reflector to the main reflector, and then emitted; a curved surface of the main reflector is a revolution paraboloid; and a central point of the main reflector is located at an intersection point of an emitting central axis of the auxiliary reflector and an axis of a radiation wave beam. The antenna is simple in structure and mature to process; the power density of a near-field region axis of the antenna is improved; the maximum power density of the axis is improved greatly under the same input power; a distance range of an effective power threshold is expanded; the efficiency of the antenna is improved; and a near-field gain of the antenna is increased.

The invention relates to a cliff detecting method and device and a floor sweeping robot. The method comprises the following steps that: an ultrasonic signal is sent to a front lower side of a floor sweeping robot; whether an echo signal returned by the ultrasonic signal after meeting a reflection object is received within a predetermined time is determined; if so, a distance between the bottom ofthe floor sweeping robot and an emitting object is obtained according to the echo signal; the distance is compared with a preset distance threshold to determine whether a cliff exists at the lower front side of the moving direction of the floor sweeping robot. Therefore, a problem that the infrared signal cliff detecting mode is susceptible to the influences of the color of the reflector and the interference of the strong light is solved. With multiple gears for ultrasonic signal emission, the distance range of the ultrasonic ranging is greatly increased; in a short-distance state, the refection objet is detected at a low gear, so that power consumption of the machine is reduced, the endurance of the floor sweeping robot is enhanced, and the noises are reduced. The method is implemented simply; the environmental adaptability is high; the detection reliability is high; and the performance of the floor sweeping robot is improved substantially.

A smart home security control device includes a security control device, which includes a lighting module and is provided, in the interior thereof, with a main control board and multiple modules connected with the main control board. The main control board is connected to related detection modules, which allows for expansion of different detection functions in a manner of being removable and insertable so as to make data of detection of a target body more accurate. Connection with each of electric appliances located around can be made with an infrared control module and a wireless communication module, and control can be made through an audio module that is also arranged on the main control board so that the application of the security control device for a range of smart control can be expanded.

The invention discloses an industrial robot with the automatic feeding and discharging functions. The industrial robot comprises a rotary seat, a machine arm, a clamping mechanism and a moving mechanism, wherein the top of the rotary seat is provided with the machine arm, one end of the machine arm is provided with the clamping mechanism, and one side of the rotary seat is provided with the movingmechanism. According to the industrial robot, the feeding and discharging operations on a large number of plates are rapidly and conveniently completed, then the feeding and discharging operations can be carried out on the plates with more sizes under the condition that the telescopic length of a first hydraulic rod is not changed, and the surfaces of the plates are protected through elastic buffering contact stress of springs in the technical stage of the clamping process; and meanwhile, the stable and reliable clamping can be ensured through a plurality of first telescopic clamping seats and second telescopic clamping seats, and when the first hydraulic rod is contracted, the first telescopic clamping seats are extruded out of a pipeline while the springs return to the original state, the first telescopic clamping seats always have acting force on the plates until the springs and the second telescopic clamping seats both return to the original state, and then the clamping position is automatically adjusted.

The invention discloses an electrode distance adjustable type microarc oxidation electrode holder, which is characterized by consisting of three transverse parallel rectangular support frames, two long screw rods which are perpendicular to and connected in series with the rectangular support frames, and adjusting nuts on the long screw rods. By adopting the electrode distance adjustable type micro-arc oxidation electrode holder, the electrode distance can be changed to control the distribution of oxidation voltage during the microarc oxidation process, so that energy consumption is controlled, a required cathode can be replaced in any time to enlarge the distance range which can be adjusted by the electrode, current efficiency is improved, and thus the electrode distance adjustable type microarc oxidation electrode holder is simple and easy, and practical.