30results about How to "Strong reception signal" patented technology

Disclosed is a manufacturing method of a transparent antenna. The method comprises the following steps of a, preparing an antenna base material with the transparency not lower than a predetermined transparency; b, growing a graphene film on the antenna base material; c, carving the graphene film through laser to form a preset antenna pattern; d, adhering the antenna base material film sheet to a main base material with the transparency not lower than the predetermined transparency or the case of an electronic product. By directly growing the graphene film on a transparent base material or a base material film sheet and carving out the antenna pattern through the laser, the excellent-performance transparent antenna can be obtained.

The invention relates to a high-temperature high-sensitivity piezoceramic material and a preparation method thereof, which belongs to the field of ceramic composition and preparation. A constitution formula of the high-temperature high-sensitivity piezoceramic material is xPbZrO3+yPbTiO3+zPbNbO3+mSrTiO3+nLaTiO3+awt.percentSiO2+bwt.percentCr2O3+cwt.percentNb2O5+dwt.percentLa2O3, wherein the x is between 0.4 and 0.6; the y is between 0.4 and 0.5; the z is between 0.001 and 0.05; the m is between 0.0 and 0.05; the n is between 0.01 and 0.05; x+y+z+m+n is equal to 1; the a is between 0 and 0.5; the b is between 0 and 0.5; the c is between 0 and 0.5; and the d is between 0 and 0.5. The material is modified and prepared based on the prior piezoceramic process, and main performances of the material comprise: d33 is equal to 500pC / N, epsilon33T / epsilono is equal to 1,800, g33 is equal to 31.4, tg delta is equal to 1.5, Kp is equal to 0.62, Qm is equal to 60, Tc is equal to 352 DEG C, and rhov(200 DEG C) is equal to 7.8*10<8>omega.cm. The material has the characteristics of high service temperature (high up to 200 DEG C), high sensitivity (g33 is equal to 31.4), strong signal receiving, and good stability.

The invention discloses a laser triangular displacement sensor and a correction method of the non-linear errors of the laser triangular displacement sensor, belonging to the technical field of photoelectric measurement. The laser triangular displacement sensor comprises a semiconductor laser device, a focusing lens set, a receiving lens set, a photoelectric detector and a signal processing circuit, wherein the semiconductor laser device and the focusing lens set are coaxial, and the semiconductor laser device, the focusing lens set and a detected target are arrayed in sequence to commonly form a transmitting terminal; the receiving lens set and the photoelectric detector are arrayed in sequence; and the signal processing circuit is connected with the photoelectric detector and is used for processing an electric signal received by the photoelectric detector to obtain displacement of the detected target. The laser triangular displacement sensor provided by the invention has very high displacement measurement precision; the displacement of a common scattering object can be measured and the displacement of a mirror surface reflection object can be measured; meanwhile, in the receiving lens set, a lens is subjected to inclination or eccentric treatment and the non-linear errors are corrected based on a principle; and an economical and effective method is provided for improving a problem that the resolution ratio is not uniform.

A glass antenna of the present invention includes a window glass: a defogging heater including a plurality of conductive lines arranged on the window glass; a first antenna element and a second antenna element arranged at an upper side relative to the heater on the window glass; and a first feeding point for the first antenna element arranged at a left side of the window glass, and a second feeding point for the second antenna element arranged at a right side of the window glass. The first antenna element and the second antenna element each are capacitively coupled with the heater.

The invention relates to a driving system. A motor vehicle driver one-half intelligent remote driving system comprises a car with automatic driving function. The car comprises a control circuit board for controlling the car operation, and the control circuit board is provided with a communication interface. The communication interface is connected with a first wireless communication module, and the communication interface is connected with an intelligent terminal through the first wireless communication module. The intelligent terminal can realize remote control of the car through the first wireless communication module.

The invention belongs to the technical field of water pumps, and discloses a system and a method for measuring the surface pressure of a pump impeller blade. The system comprises piezoelectric film sensors, a signal sending device, a signal receiving device, a data acquisition and monitoring system and a computer. The method comprises the following steps that the piezoelectric film sensors are stuck on the working surface and the back face of the pump impeller blade, a leading wire for the piezoelectric film sensors is introduced in a radial hole of a pump shaft through a wiring trough of an impeller rear cover plate and is further introduced in an axial hole of the pump shaft; the signal sending device is mounted on one side, close to a coupling, of the right side of the axial hole, and converts pressure signals into digital signals, the digital signals are wirelessly transmitted, are received by the signal receiving device, and are further transmitted to the data acquisition and monitoring system, and after being acquired, all the signals are transmitted to the computer to be analyzed. The problems of low applicability and low precision in a conventional method are solved, and the system is convenient and flexible to mount.

The invention discloses a radio station transmitting antenna, especially a transmitting antenna with a perpendicular depolarizing single dipole, comprising a strut body and multilayer antenna vibrators fixed onto the strut body, wherein each layer of the antenna vibrator is a single dipole vibrator, the two poles of which are distributed in a linear form from up to down and perpendicular to the ground, each layer of the antenna vibrator is fixedly connected to the sides of the strut body through stings, the multilayer antenna vibrators are distributed uniformly on the same side of the strut body from up to down, the strut body is a hollow metal pole with a certain taper, and is connected with two sections or more.

A slim television broadcast receiver employing antennas in which a waveguide is formed by a metallic plate and a copper foil on a printed circuit board, an insulating magnetic element is loaded so as to block one of a pair of aperture planes of the waveguide, the aperture area is enlarged by beveling the other aperture plane, and tuning elements are provided on opposed sides with respect to the center part of the other aperture, which antennas are placed on opposed side ends of the slim television broadcast receiver, thereby performing electronic tuning and phase synthesis diversity reception.

The invention discloses a double-microphone voice noise reduction device. The device comprises a first microphone and a second microphone, wherein the first microphone and the second microphone are located on the same horizontal line, the first microphone is set to be in the 0-degree direction of the mouth, the second microphone is far away from the 180-degree direction of the mouth, and the distance between the first microphone and the second microphone ranges from 1.1cm to 3cm. The invention also discloses a double-microphone voice noise reduction method, which comprises the steps of firstly, receiving and acquiring two paths of voice signals s0 and s1, wherein the sampling rate is integral multiple of the sampling rate of actually processed data; then down-sampling to an actual samplingrate needing to be processed; performing spectral analysis on the down-sampled data, and iteratively calculating a filter coefficient; multiplying the filter by one path of input signal in a frequency domain, and performing inverse Fourier transform and overlapping addition to obtain an output voice signal s2. According to the invention, stable and non-stable voices in a non-target direction canbe effectively filtered to obtain processed clean voices; not only can an efficient noise reduction effect be achieved, but also the noise reduction cost is reduced.

The invention provides a non-paired fast data transmission method applied to a low power consumption Bluetooth device. The non-paired fast data transmission method applied to a low power consumption Bluetooth device is characterized by comprising the following steps: 1) setting a unique identification code for each acquisition or measurement object, and setting a numeric encoding corresponding to the MAC address for each Bluetooth acquisition or measurement slave device; 2) arranging a Bluetooth master device in the area where the acquisition or measurement object located in, wherein the Bluetooth master device adopts the non battery power supply mode; after the electrifying initialization is completed, the Bluetooth master device enters the rotation scanning mode, and continuously monitors the broadcast message of the near Bluetooth slave device; ...; 7) if the Bluetooth acquisition or measurement slave device receives the response of the Bluetooth master device, emptying the sending counter, entering into a low power consumption state, and waiting for the next data transmission. According to the non-paired fast data transmission method applied to the low power consumption Bluetooth device, the data of the Bluetooth slave machine is transmitted to the Bluetooth master machine by means of the connectionless broadcast, therefore, the identity of the Bluetooth slave machine user can be quickly verified; the Bluetooth master machine with the nearest transmission distance is matched to receive the data, therefore, the invention has the characteristics of fast transmission speed, low power consumption and high frequency and large scale use.

The invention discloses a radio station transmitting antenna, especially a transmitting antenna with a perpendicular depolarizing single dipole, comprising a strut body and multilayer antenna vibrators fixed onto the strut body, wherein each layer of the antenna vibrator is a single dipole vibrator, the two poles of which are distributed in a linear form from up to down and perpendicular to the ground, each layer of the antenna vibrator is fixedly connected to the sides of the strut body through stings, the multilayer antenna vibrators are distributed uniformly on the same side of the strut body from up to down, the strut body is a hollow metal pole with a certain taper, and is connected with two sections or more.

A wireless communication method and protocol for wireless RF transmission of data, e.g. audio data, with low latency. The method involves a fixed part (FP) serving as synchronization master, and one or more portable parts (PP) being synchronization slaves. The FP performs scanning between a set of supported channels within one limited frequency band, such as within an ISM band. Further, the FP performs collecting measures of RF interference level on at least a plurality of the supported channels in response to the scanning, preferably using own interference level measurement and by collecting RSSI data from the PP for the supported channels. In response to these measures of RF interference level, the FP executes a selection algorithm for selecting and re-selecting first and second different frequencies for respective first and second duplex RF bearers from the set of supported channels to select the channels with least RF interference. Finally, the FP transmits, in one frame of such as 1 ms to 3 ms length, the same data packet on both of said first and second duplex RF bearer frequencies to the PP. This provides a roboust and low latency wireless interface suitable for Human Interface Devices and audio devices, e.g. for gaining equipment.

The invention discloses a laser triangular displacement sensor and a correction method of the non-linear errors of the laser triangular displacement sensor, belonging to the technical field of photoelectric measurement. The laser triangular displacement sensor comprises a semiconductor laser device, a focusing lens set, a receiving lens set, a photoelectric detector and a signal processing circuit, wherein the semiconductor laser device and the focusing lens set are coaxial, and the semiconductor laser device, the focusing lens set and a detected target are arrayed in sequence to commonly form a transmitting terminal; the receiving lens set and the photoelectric detector are arrayed in sequence; and the signal processing circuit is connected with the photoelectric detector and is used for processing an electric signal received by the photoelectric detector to obtain displacement of the detected target. The laser triangular displacement sensor provided by the invention has very high displacement measurement precision; the displacement of a common scattering object can be measured and the displacement of a mirror surface reflection object can be measured; meanwhile, in the receiving lens set, a lens is subjected to inclination or eccentric treatment and the non-linear errors are corrected based on a principle; and an economical and effective method is provided for improving a problem that the resolution ratio is not uniform.

The invention discloses a home television antenna. The home television antenna comprises a signal transmission device, a power supply device, an antenna amplifying device, an antenna fixing enclosureand an antenna main board, wherein the signal transmission device is electrically connected with the antenna amplifying device; the power supply device is electrically connected with the antenna amplifying device; the antenna fixing enclosure is fixed on the antenna main board; an antenna is arranged in the antenna main board and is fixedly connected in the antenna main board by the antenna fixingenclosure; the antenna is electrically connected with the antenna amplifying device by the signal transmission device. According to the home television antenna, by adopting a special antenna structure, line graphs are simplified, and stronger receiving signal and better receiving effect are realized; the defects of the prior art are overcome; by arranging the structure of the antenna amplifying device, the receiving distance can be controlled by a switch.

The invention discloses a specific low-power split type external antenna, which comprises a mounting bottom plate, a connecting seat, a fixing seat, an external antenna, a cover cap, an angle adjusting assembly and a signal enhancing assembly, and is characterized in that the connecting seat is rotationally arranged on the mounting bottom plate, the fixing seat is arranged on the connecting seat, the external antenna is arranged on the fixing seat, and the angle adjusting assembly is arranged on the fixing seat; the cap is arranged on the external antenna, the signal enhancement assembly is arranged on the fixing seat close to the external antenna, and the angle adjusting assembly is connected to the fixing seat and arranged on the mounting bottom plate. The invention belongs to the technical field of external antennas, and particularly relates to a specific low-power split type external antenna which can strengthen received signals, is convenient to adjust and is flexible and convenient to use.

The invention relates to a high-temperature high-sensitivity piezoceramic material and a preparation method thereof, which belongs to the field of ceramic composition and preparation. A constitution formula of the high-temperature high-sensitivity piezoceramic material is xPbZrO3+yPbTiO3+zPbNbO3+mSrTiO3+nLaTiO3+awt.percentSiO2+bwt.percentCr2O3+cwt.percentNb2O5+dwt.percentLa2O3, wherein the x is between 0.4 and 0.6; the y is between 0.4 and 0.5; the z is between 0.001 and 0.05; the m is between 0.0 and 0.05; the n is between 0.01 and 0.05; x+y+z+m+n is equal to 1; the a is between 0 and 0.5; the b is between 0 and 0.5; the c is between 0 and 0.5; and the d is between 0 and 0.5. The material is modified and prepared based on the prior piezoceramic process, and main performances of the material comprise: d33 is equal to 500pC / N, epsilon33T / epsilono is equal to 1,800, g33 is equal to 31.4, tg delta is equal to 1.5, Kp is equal to 0.62, Qm is equal to 60, Tc is equal to 352 DEG C, and rhov(200 DEG C) is equal to 7.8*10<8>omega.cm. The material has the characteristics of high service temperature (high up to 200 DEG C), high sensitivity (g33 is equal to 31.4), strong signal receiving, and good stability.

The invention belongs to the technical field of water pumps, and discloses a system and a method for measuring the surface pressure of a pump impeller blade. The system comprises piezoelectric film sensors, a signal sending device, a signal receiving device, a data acquisition and monitoring system and a computer. The method comprises the following steps that the piezoelectric film sensors are stuck on the working surface and the back face of the pump impeller blade, a leading wire for the piezoelectric film sensors is introduced in a radial hole of a pump shaft through a wiring trough of an impeller rear cover plate and is further introduced in an axial hole of the pump shaft; the signal sending device is mounted on one side, close to a coupling, of the right side of the axial hole, and converts pressure signals into digital signals, the digital signals are wirelessly transmitted, are received by the signal receiving device, and are further transmitted to the data acquisition and monitoring system, and after being acquired, all the signals are transmitted to the computer to be analyzed. The problems of low applicability and low precision in a conventional method are solved, and the system is convenient and flexible to mount.

The invention discloses a multi-lobe high-gain UV (ultraviolet) omnidirectional AM (amplitude modulation) antenna which comprises an insulating plate, a substrate, two V frequency signal radiation units, an AM vibrator winding magnetic rod and an amplifying circuit. The substrate is arranged above the insulating plate, the two V frequency signal radiation units are positioned between the insulating plate and the substrate, four signal radiation portions, a feeder unit and an impedance matching unit are printed on the substrate, the four signal radiation portions are annularly arrayed on the upper surface of the substrate, so that the antenna receives UHF (ultra-high frequency) band signals in a 360-degree direction, the two V frequency signal radiation units are distributed around an insulating layer and used for receiving VHF (very high frequency) band signals, and the AM vibrator winding magnetic rod is arranged on the insulating layer and used for receiving AM and FM (frequency modulation) signals. By the aid of the radiation units for receiving UHF and VHF and the winding magnetic rod for receiving AM and FM, the antenna can receive the UHF, VHF, AM and FM band signals more strongly and stably, signal structure frequency bands are widened, the VHF frequency band receives the signals in an omnidirectional manner through a circular structure, and the UHF frequency band receives the signals in an omnidirectional manner through the four radiation portions.

The invention discloses a T-BOX integrated 5G combined antenna, and relates to the technical field of 5G combined antennae, the T-BOX integrated 5G combined antenna comprises an upper shell and a lower shell, the inner cavity of the upper shell and the inner cavity of the lower shell are both provided with PCBs, and the two PCBs are fixedly connected with the inner side wall of the upper shell and the inner side wall of the lower shell through screws respectively; a 5G auxiliary antenna, a 5G-MIMO 1 antenna, a high-precision GNSS antenna and a WIFI antenna are arranged on the PCB positioned in the inner cavity of the upper shell, the high-precision GNSS antenna is fixedly mounted in the middle of the upper surface of the PCB, the 5G-MIMO 1 antenna and the WIFI antenna are positioned on one side of the high-precision GNSS antenna, and the 5G auxiliary antenna is positioned on the other side of the high-precision GNSS antenna. The overall structural design is reasonable, the structure is compact, the GNSS antenna, the 5G antenna, the WIFI antenna and the V2X antenna are integrated in the T-BOX box, the T-BOX integrated 5G combined antenna is used for receiving 5G radio signals, GNSS signals, WIFI signals and V2X signals, the cost is saved, the signal receiving strength is improved, and the T-BOX integrated 5G combined antenna has the advantages of being economical, convenient, attractive and high in received signal strength.

Provided is a full-band signal indoor digital television receiving antenna, which comprises an installation cavity arranged in a wall body, a mobile rail arranged in the installation cavity, an antenna base arranged on the mobile rail and an antenna arranged on the antenna base. The outer surface of the installation cavity is provided with a hollow separator plate; the two sides of the installation cavity are respectively provided with a metal sheet; one end of the mobile rail is provided with two rotatable traction spools, and the other end thereof is provided with a rotatable line-passing reel. One of the traction spools is connected with one side of the antenna base through a traction line, and the other traction spool is connected with the other side of the antenna base through the traction line after the traction line passing around the line-passing reel. The antenna is arranged in the wall body, thereby preventing influence of the antenna on overall indoor decoration style; and meanwhile, the attitude and position of the antenna can be adjusted conveniently, and intensity of the received signal is high.

The invention provides a radio PD and SAD coexistence circuit, a radio set and a radio station play method, and belongs to the field of radio sets. The radio PD and SAD coexistence circuit comprises an integrated circuit U1, a first antenna signal reception module, a second antenna signal reception module and a signal selection control module, wherein the output end of the first antenna signal reception module is connected with the input end of the input end of the signal selection control module and the AM signal input end of the integrated circuit U1, the output end of the second antenna signal reception module is connected with the input end of the signal selection control module and the first FM signal input end of the integrated circuit U1, and the output end of the signal selection control module is connected with the second FM signal input end of the integrated circuit U1. According to the radio PD and SAD coexistence circuit, the radio set and the radio station play method, two modes can be switched, the practicality is high, signal interference can be effectively reduced via an algorithm, and the reception signals are stronger.

The invention belongs to the technical field of pipeline detection equipment, and discloses an in-hole double-antenna sound wave detector for PE pipeline detection, which comprises a tool box, a signal transmitting device and a signal receiving device, the right end of the tool box is provided with a storage groove, and the middle part of the bottom of the signal receiving device is fixedly provided with a lower annular plate; an inserting groove is formed in the upper end of the lower annular plate, and an inserting block is movably connected into the inserting groove. The cable, the receiver, the upper annular plate and other structures are matched to achieve the advantage of strong received signals, the upper annular plate and the lower annular plate at the bottom of the signal receiving device are connected and matched, and the upper annular plate and the lower annular plate are of a fan-shaped structure, so that the contact surface is increased, the caliber value of the outer side is maximum, more signals are received, and the signal receiving effect is improved. The higher the receiving quality is, the feed source device in the receiver can gather and collect the received weak signals, so that the purpose of receiving strong signals can be achieved.

The invention discloses a MIMO wireless optical communication receiver and a use method thereof. The MIMO wireless optical communication receiver structurally comprises rubber bottom columns, a main body, a combined plate, heat dissipation holes, indication lamps, a receiving antenna, a transmission antenna, a display, a coil, a joint, a control switch, a reset button, an adaptation interface and a WLAN interface; the rubber bottom columns are arranged below the main body, and fixedly connected with the main body; the combined plate is arranged on the main body, and fixedly connected with the main body; the heat dissipation holes are arranged at the side of the main body, and connected with the main body; the indication lamps are arranged at the side of the combined plate, and connected with the combined plate; the display is arranged at the side of the indication lamps, and connected with the indication lamps through the combined plate; and the receiving antenna is arranged at the side of the main body, and fixedly connected with the main body. The MIMO wireless optical communication receiver disclosed by the invention is strong in received signal, high in quality and low in cost; and thus, great convenience is provided for users.

The invention discloses an illegal wireless AP detection device. The device comprises a main body, wherein an LED display, a control switch and a control button are arranged on the outer surface of the front end of the main body, the LED display is located on one side of the control switch, the control button is located below the LED display, a damp-proof bottom plate is arranged on the outer surface of the lower end of the main body, and a base is arranged on the outer surface of the lower end of the damp-proof bottom plate. According to the illegal wireless AP detection device, moisture absorption cotton is arranged, the moisture absorption cotton can well adsorb moisture generated by the ground; ground moisture is prevented from entering the equipment to influence the normal use of theequipment, and through the arrangement of the rotating shaft, the direction of the illegal wireless AP detection device can be conveniently adjusted, signals in all directions can be conveniently received, the received signals are stronger, control is more convenient, people can conveniently use, and better use prospects are brought.

The invention relates to a Bluetooth wireless receiving device. The Bluetooth wireless receiving device comprises an MCS and code element number storage unit, an MCS switching control unit, a demodulating unit, a decoding unit, a frequency domain equalizing unit, a CP removing unit, a receiving unit, and a Bluetooth recognizing and receiving unit, wherein the output end of the MCS and code element number storage unit is connected with the MCS switching control unit; the output end of the MCS switching control unit is connected with the demodulating unit and the decoding unit respectively; by virtue of a Bluetooth signal, a signal is transmitted to the receiving unit through the Bluetooth recognizing and receiving unit; the output end of the receiving unit is connected with the CP removing unit; the CP removing unit is connected with the demodulating unit through the frequency domain equalizing unit; the demodulating unit is connected with the decoding unit. The Bluetooth wireless receiving device adopting the design provided by the invention is strong in a received signal and good in using effect in the using process.

The invention discloses a reverse rotation speed sensor, which comprises a receiving head, a lead, a magnetic steel part, a magnetic guide column, a planar coil, a plug and a housing. The housing is provided with a circle of threads and nuts are screwed onto the threads. A fixed armature is sandwiched between the nuts. The fixed armature is provided with a fixing hole. The diameter of the fixed armature is the same with the external diameter of the sensor. The sensor is simple in structure, convenient to fix, and strong in signal reception effect.