39 results about "Gps antenna" patented technology

The utility model relates to electronic equipment technical field discloses a kind of radio frequency circuit and electronic equipment, radio frequency circuit includes: cellular communication antenna;First GPS antenna;Second GPS antenna, compared with first GPS antenna, with higher spatial isolation between the cellular communication antenna;Radio frequency switching circuit, the input of the radio frequency switching circuit is connected the first GPS antenna and second GPS antenna, the output of the radio frequency switching circuit is connected GPS demodulator;Control module is connected with cellular communication module, for according to the interference state of cellular communication module output, control the radio frequency switching circuit switching and the connection state of the first GPS antenna and second GPS antenna. By the interference state of cellular communication module output dynamic adjustment antenna path, to enhance overall anti-interference capability. It is favorable to provide more stable GPS receiving path in the scene where cellular interference exists.

The utility model provides a non-contact power transmission network fault diagnosis device and system, and the device comprises an electric field collection board which is used for sensing and collecting a power frequency voltage magnetic field change signal of a power transmission line; the current sensor is used for sensing and collecting power frequency current and traveling wave current magnetic field change signals in the power transmission line; the main board is in signal communication connection with the electric field acquisition board and the current sensor through coaxial cables, and is used for receiving acquired power frequency voltage magnetic field change signals, power frequency current and traveling wave current magnetic field change signals which are used for judging whether a fault occurs in the line or not and judging the fault type; the GPS antenna is used for providing positioning information so as to judge the fault position on the line; the 4G antenna is used for reporting various information acquired by the device and a judgment result to the cloud platform master station; the energy storage battery provides electric energy for the whole device through the power supply board and the power supply protection board; the power panel is used for independently supplying power to the whole device, and the power protection board is used for providing EMC electromagnetic protection for the whole device.

The artificial intelligence (AI) drone shooting device according to the present invention comprises: a drone aircraft (100) equipped with a radar that identifies and tracks a target; and a shooting control device (200) attached to the lower part of the drone to control automatic shooting. The drone aircraft (100) includes a GPS antenna unit (110) for determining the current location of the drone; a radar transceiver unit (120) for detecting elevation, azimuth, and distance values ​​of a target object; and a communication antenna unit (130) capable of communicating with a remote control unit. The radar transceiver unit (120) is installed on the drone aircraft in a vertical structure with a radar transmitter (Tx) and a receiver (Rx) to facilitate target detection and tracking even when the tracked target rapidly ascends or descends. The fire control device (200) includes a camera unit (210) composed of an optical (EO) camera, a TOD camera, and a laser rangefinder (LRF) to capture images of the target object; and a firing device (220) including a gun support and a firing device.

This utility model discloses a hermetically sealed combination antenna for 4G and GPS in wellbore applications, relating to the field of combined antenna technology. It includes a screw sleeve fixedly mounted on a housing, through which the GPS antenna and 4G antenna pass and are electrically connected to the housing. A rubber post, encasing the GPS and 4G antennas, is fixedly mounted inside the screw sleeve. This hermetically sealed combination antenna for 4G and GPS in wellbore utilizes the rubber post encasing the two antennas within the screw sleeve to seal and enclose the inner side of the screw sleeve, thereby improving the sealing line between the inner side of the screw sleeve and the antennas. This prevents external moisture from entering the inner side of the housing along the inner side of the screw sleeve and the antenna surface, improving the protection of the internal circuitry.

The utility model discloses a robot with a detachable navigation positioning module structure, which comprises a mobile robot, a round mounting seat and a top tray, a driver is mounted on the mobile robot, an assembly cap is mounted on the driver, a bayonet is arranged on the surface of the assembly cap, the top tray is screwed in the assembly cap, and the round mounting seat is fixed on the top tray. A plurality of springs are installed on the surface of the top disc, a clamping plate is connected into the assembling cap in a sliding mode, the clamping plate is provided with an inserting rod, a plurality of inserting holes are formed in the surface of the circular mounting base, the circular mounting base is connected into a bayonet in a sliding mode, and a GPS antenna group is installed on the circular mounting base; the GPS antenna group is connected with the assembly cap through the circular mounting seat, so that the GPS antenna group is detachably connected with the mobile robot, the GPS antenna group is positioned outside the mobile robot when the mobile robot is used for coping with a complicated indoor terrain, the signal strength is better ensured, and the GPS antenna group is more convenient to replace.

The application discloses a kind of road surface bumping fast intelligent detection equipment, including driving vibration acquisition terminal and GPS antenna array, driving vibration acquisition terminal has hardware layer, drive layer, middle layer and application layer;The specific steps of detection method are as follows: S1, PC end parameter setting;S2, equipment sampling frequency configuration;S3, the installation of intelligent acquisition equipment;S4, the fixation and power supply of intelligent detection equipment;S5, road surface performance intelligent detection, satellite positioning module data and acceleration sensor module data are read in process, obtain positioning data and speed data, and calculate road surface bumping judgment value with 10 meters driving distance as interval;S6, the viewing and export of detection result.The application adopts the above structure and step of a kind of road surface bumping fast intelligent detection equipment and detection method, can detect the vibration in the process of road surface driving, and the setting of road surface bumping judgment threshold value is carried out intelligent detection of road surface bumping by driving speed normalization processing.

The utility model discloses equipment for real-time acquisition and calibration of satellite signals, which comprises a shell, and a data processing module, a satellite signal transceiving module, a fakra connector and a USB (Universal Serial Bus) connector which are arranged in the shell and are connected through a circuit, the satellite signal transceiving module is mounted at the bottom of the data processing module; the fakra connector and the USB connector are arranged at the two ends of the data processing module respectively. The device and the vehicle-mounted recorder can use the GPS antenna at the same position to control the variable of the detection process, and the built-in network module of the handheld device can carry out data mutual transmission and bidirectional verification with a cloud data center, so that the positioning of the GPS is accurately calibrated.

The utility model provides a five-in-one vehicle-mounted antenna. The five-in-one vehicle-mounted antenna provided by the utility model comprises a bottom plate; the cover body is connected to the bottom plate, an accommodating space is formed between the cover body and the bottom plate, and two LTE (Long Term Evolution) antennas, two WIFI (Wireless Fidelity) antennas and a GPS (Global Positioning System) antenna which are not in contact with each other are arranged in the accommodating space; wherein the LTE antennas, the WIFI antennas and the GPS antenna are all vertically installed on the bottom plate, the two LTE antennas and the two WIFI antennas are all located at the end portion of the bottom plate, and the GPS antenna is located at the center of the bottom plate. According to the five-in-one vehicle-mounted antenna provided by the utility model, five-in-one of two LTE antennas, two WIFI antennas and one GPS antenna is realized, the internal structure of the antenna is more compact, various key technologies are fused to meet the requirements of modern intelligent automobiles, and the cover body adopts a shark fin-shaped structure, so that the overall appearance of the antenna is attractive and practical.

The utility model discloses a satellite navigation receiving antenna, and relates to the technical field of GPS antennas. Comprising an antenna body and a supporting assembly, the antenna body is installed in the supporting assembly in a magnetic attraction mode, the antenna body comprises a packaging shell, a low-noise signal module, a ceramic antenna and a cable, the low-noise signal module is installed in the packaging shell, and the ceramic antenna is electrically connected to the low-noise signal module. According to the satellite navigation receiving antenna, the antenna body and the supporting assembly are used in cooperation, the fixing cassette in the supporting assembly is used for containing the antenna body, the first supporting arm, the second supporting arm, the back plate and the damping rotating shaft are used for folding and supporting, and multi-directional angle adjustment can be conducted according to needs, so that the GPS antenna has the advantage of being capable of being folded and adjusted; the problems that a traditional GPS antenna is generally directly installed on the surface of a carrier, the GPS antenna cannot be folded and unfolded, and inconvenience is easily caused are solved.

The invention relates to a computer-based refueling security system (A) that detects and prevents any movement that may occur in the vehicle in order to prevent damage to the components, the vehicle and people that provide refueling during charging or refueling, to be used in internal combustion, electric and hybrid automatic transmission vehicles with a three-axis accelerometer (1 ), speed sensor (2) and GPS antenna (3).

The utility model relates to the technical field of antennas, in particular to a single-layer single-feed double-frequency GPS antenna, which comprises a dielectric substrate, a radiation patch arranged on the upper layer of the dielectric substrate and a feed point arranged on the radiation patch, and is characterized in that the radiation patch is of a rectangular structure with the length of Y and the width of X, so that the radiation patch has the length direction Y and the width direction X; an L-shaped slot is formed in the radiation patch, the L-shaped slot comprises a first slot section extending in the X direction and a second slot section extending in the Y direction, the width of the slot is a, the L-shaped slot enables the propagation path of current in the X direction to be prolonged, the effective electrical length Z in the X direction is smaller than the physical width X, and the physical length Y in the Y direction is kept unchanged; the compact space layout of the GPS antenna is improved, the strict requirements of numerous novel electronic devices for compact space layout are met, the competitiveness of the product in the market is enhanced while the space utilization rate of the product is improved, and a new way is opened up for wide application of the GPS antenna in modern electronic devices.

The utility model relates to a remote electric energy quality monitoring device. According to the technical scheme, a control circuit module is installed on the upper side of a main circuit board, a weak current signal connector is arranged at the upper end, and a strong current input connector is arranged at the lower end; a main shell is installed on the outer side of the main circuit board, an indicator light circuit board is installed on the upper side of the main shell, an upper baffle is arranged at the upper end of the main shell, the GPS antenna, the weak current signal connector and the communication antenna penetrate and are exposed along the upper baffle, a lower baffle is installed at the lower end of the main shell, and the strong current input connector and the switch key penetrate and are exposed along the lower baffle. The beneficial effects are that the two sides of the upper baffle plate are respectively provided with the communication antenna hole and the GPS antenna hole, so that a communication antenna and a GPS antenna can pass through the communication antenna hole and the GPS antenna hole and are connected to the 4G communication module and the GPS positioning module in the control circuit module, real-time on-line monitoring of electric energy quality can be realized, the cost of installation materials is low, live installation is supported, and the installation efficiency is improved. And economic loss caused by power-off installation is reduced.

This invention is a low-profile, highly integrated 5G antenna module, comprising a metal ground plane, a main PCB board, a GPS antenna positioned at the center of the main PCB board, and several groups of 5G antennas and Wi-Fi antennas arranged in a circle around the GPS antenna. The 5G antennas are spaced at a certain angle and are arranged in a circle adjacent to the GPS antenna; the Wi-Fi antennas are positioned between the 5G antennas and arranged in a circle away from the GPS antenna. This invention achieves an antenna height of less than 40mm through radiator folding, grounding optimization, a ring layout, and isolation design. Under a large-area metal ground plane, the 5G antenna achieves a full-band efficiency of over 40%, maintains high isolation even with multiple antennas close together, and supports full-band LTE, 5G NR, and FR1 band antennas with a very low antenna height. It also supports high-speed Wi-Fi and GPS tri-band positioning, making it highly suitable for intelligent connected vehicle antenna scenarios, offering advantages such as low profile, high integration, high performance, and high isolation.

The invention provides a small omni-directional unmanned tugboat and an operation method thereof.The tugboat is of a rotationally symmetrical two-stage step type structure as a whole and comprises a lower-layer boat body and an upper-layer boat body, and the upper-layer boat body is located on the upper surface of the lower-layer boat body and coaxially arranged; the upper-layer ship body is a control cabin, a control unit is installed in the upper-layer ship body, a GPS antenna is installed on the top, and a plurality of pressure sensors are evenly distributed on the outer side face in the circumferential direction. At least three propellers are evenly distributed on the outer side face of the lower-layer ship body in the circumferential direction, a plurality of pressure sensors are evenly distributed on the upper surface of the lower-layer ship body in the circumferential direction, anti-skid ground mats are arranged between the adjacent pressure sensors on the upper surface of the lower-layer ship body, and a balance weight cabin, a water tank and a water pump connected with the water tank are arranged in the lower-layer ship body. And the tugboat realizes operation through a control system. Remote control of the tugboat is achieved, operation efficiency is improved, and diversified requirements for tugboat towing in a pond can be better met.

The invention discloses electronic equipment, and relates to the technical field of electronic products. The electronic equipment comprises a first radiator, a second radiator, a first tuning circuit and a second tuning circuit, a first fracture is arranged between the first radiator and the second radiator, and one end, far away from the first radiator, of the second radiator is provided with a second fracture; a first feeding point is arranged in the first radiating body, a first tuning point, a second tuning point and a second feeding point are arranged in the second radiating body, the first tuning point is grounded through a first tuning circuit, the second tuning point is grounded through a second tuning circuit, one end, far away from the first fracture, of the first radiating body is grounded, and the first feeding point is a feeding point of the medium-high frequency antenna; the second feeding point is a feeding point of the GPS antenna; wherein the first tuning circuit and the second tuning circuit are respectively used for tuning the medium-high frequency antenna, and a tuning structure formed by the first tuning circuit and the second tuning circuit is used for enabling a resonance frequency point of the GPS antenna to be matched with a first frequency point.

A method and system include, among other components, a GPS receiver and one or more Universal Serial Bus (USB) ports. The GPS receiver may be implemented as a discrete device and may be located in close proximity, e.g., anywhere from 5 to 30 mm, to one or more of the USB ports. Performance data may indicate GPS performance or functionality is influenced by one more USB parameters including, USB version information, e.g., USB 2.0, USB 3.0, etc. and port proximity information indicating distance between the systems USB port and the GPS receiver or a component thereof, e.g., a GPS antenna. The system may include a circuit, module, or other component to detect GPS activity and transmit a GPS-activity signal to trigger a USB configuration that prevents USB 3.0 operation. The detection circuit may employ, e.g., an existing GPS device pin or a custom circuit configured to detect GPS power consumption.

The invention discloses a noise on-line monitoring device for electric power facilities and an application method thereof.A host of the noise on-line monitoring device comprises an outdoor rainproof junction box, a waterproof shielding shell and a circuit unit, the waterproof shielding shell is installed in the outdoor rainproof junction box, and the circuit unit is installed in the waterproof shielding shell; a GPS antenna, a communication antenna and a weather station are installed on the outdoor rainproof junction box, a battery pack is installed in the outdoor rainproof junction box, the outdoor microphone array is fixedly installed on the outdoor rainproof junction box or fixedly installed at a factory boundary measuring point of a transformer substation, the outdoor microphone array comprises a plurality of microphones, and the microphones are connected with the outdoor rainproof junction box. And the microphone, the GPS antenna, the communication antenna, the meteorological station and the battery pack are respectively connected with the circuit unit. The device is compact in structure and long in endurance, has an anti-interference monitoring capability, is suitable for online noise monitoring of electric power facilities such as a transformer substation and a converter station, can improve the quality and efficiency of environment-friendly noise monitoring and prevention work of the electric power facilities, and reduces the monitoring cost.

The invention discloses an airborne gravity modification method based on a helicopter, which comprises the following steps: carrying out suitability analysis on a helicopter and an instrument to be selected, and preliminarily evaluating the feasibility of modification; determining the installation position of an airborne gravimeter and the installation position of a GPS antenna; calculating according to the distance between the airborne gravimeter and the GPS antenna and the interference of the airborne gravimeter deviating from the gravity center of the helicopter on the whole measurement equipment formed by the helicopter, and further evaluating the feasibility of refitting; designing a GPS antenna bracket, an airborne gravimeter adapter bracket, a power interface and laying a feeder line; after the refitting design is completed, comprehensive safety evaluation is carried out, and the refitting design of the helicopter is completed according to an evaluation result. According to the method, the mounting positions of the airborne gravimeter and the GPS antenna are reasonably designed, so that the quality of airborne gravity measurement data can be effectively improved, and the method has guiding significance for subsequent airborne gravity measurement refitting work.

The utility model discloses a remote information processor, an Internet of Vehicles system and a vehicle. The remote information processor comprises an external GPS antenna, a built-in GPS antenna, a control module, a first switch module and a GPS module. The external GPS antenna, the internal GPS antenna, the control module and the GPS module are all connected with the first switch module. The external GPS antenna and the internal GPS antenna are used for receiving GPS signals. The control module is used for controlling the on-off state of the first switch module according to the working state of the external GPS antenna, so that a GPS signal received by one of the external GPS antenna and the internal GPS antenna is transmitted to the GPS module. Therefore, the stable input of the GPS signal is ensured, the situation that the remote information processor loses the positioning capability due to the damage of the external GPS antenna is avoided, and the reliability of the remote information processor is enhanced.

The utility model provides a lightweight miniaturized GPS antenna, comprising an antenna body, the antenna body is provided with a clearance zone, circuit connection boards and a matching network, the circuit connection boards are arranged at two sides of the clearance zone, the clearance zone is provided with a chip antenna, the configuration of the clearance zone is matched with the chip antenna and the circuit connection boards, and the matching network is connected with the chip antenna and the circuit connection boards. The matching network is led out through a feeding point of the chip antenna, the size and the shape of a clearance area are designed in a customized mode, the matching network is matched with the chip antenna and a circuit connecting plate, and fine debugging of the matching network is carried out, so that the bandwidth performance of the antenna is widened, and the adaptability and the stability of the antenna in a complex application environment are improved. Therefore, multiple requirements of modern electronic equipment on high performance, miniaturization and light weight of the antenna can be met.

The invention belongs to the technical field of conductive paste, and particularly relates to high-adhesion composite glass phase GPS antenna front silver paste and a preparation method thereof. The high-adhesion composite glass phase GPS antenna front silver paste comprises the following components in parts by weight: 70-90 parts of conductive silver powder, 3-10 parts of glass powder, 15-40 parts of an organic carrier and 0.1-1 part of a rare earth metal doped material. According to the high-adhesive-force composite glass phase GPS antenna front silver paste, ultrahigh adhesive force is ensured, and meanwhile, extremely low square resistance and high-frequency loss can be achieved.

The utility model provides an antenna structure and terminal equipment. The antenna structure comprises a metal frame, a first antenna and a second antenna. The metal frame comprises a left side edge, a right side edge and a top edge connected with the left side edge and the right side edge, the first antenna comprises a first output feeding point, the first output feeding point is connected to the top edge, the second antenna comprises a second output feeding point, and the second output feeding point is connected to the left side edge and / or the right side edge. Wherein the first antenna comprises a GPS antenna. The left side edge, the right side edge and the top edge of the metal frame can serve as main radiating bodies of the first antenna and the second antenna respectively, an electromagnetic field is generated through excitation of the first output feeding point and the second output feeding point, and radiation and receiving of signals are achieved. Through the above arrangement, the length of the second antenna is set, so that the second antenna connected to the left side edge and the right side edge can be used as a parasitic antenna of the GPS antenna, thereby improving the radiation efficiency and performance of the GPS antenna.

The invention relates to the technical field of positioners, in particular to a positioner and an assembling method. An existing positioner is often large in size, and is very inconvenient for teenagers to wear. The invention provides a positioner and an assembly method, an LDS technology is used to realize integration of an antenna and a carrier, a GPS antenna, an LORA antenna and an L5 antenna are integrated on the same LDS antenna support, laser etching of first activation areas is carried out on different areas of a first surface of the LDS antenna support, and then chemical plating forming is carried out on the first activation areas. The space occupation of the antenna part in the locator shell is obviously reduced, and a basic condition is provided for the whole ultra-thin locator; and meanwhile, the metal elastic sheet is crimped by using the chemical plating column, so that the internal circuit occupation is reduced, the size of the positioner is further compressed, the ultrathin design, the practicability and the economical efficiency are considered on the premise of meeting the multi-antenna communication performance, and the market requirement of young consumers on a light and thin positioner is met.

The invention discloses a system and a method for monitoring combustible gas in a tube well, and belongs to the technical field of tube well combustible gas leakage monitoring. The system comprises a battery, an optical system, a diffuse reflection sheet, a data processing module, a temperature sensor, a humidity sensor, a pressure sensor, a 4G antenna and a GPS antenna. The method comprises the following steps: emitting a laser signal into a tube well; receiving a reflected light signal which is absorbed by the combustible gas and is enhanced by a diffuse reflection sheet, and converting the reflected light signal into a reference and measurement light path signal; calculating absorbance based on the signal ratio to reduce noise; carrying out concentration inversion calculation; and comprehensively correcting environmental influence factors in combination with temperature, humidity and pressure data to obtain accurate concentration. Through the synergistic effect of light path enhancement, noise suppression and environmental compensation, the problems of weak signals and large environmental interference in the tube well are effectively solved, and the monitoring accuracy, stability and reliability are remarkably improved.

RTK-GPS (realtime kinematic GPS) is one of the most precise positioning technology, with which users can obtain cm-level accuracy of the position in realtime by processing carrier-phase measurements of GPS signals. RTK-GPS has been already utilized for many applications like surveying, construction, agriculture and transportation. Recently, some researchers have tried to apply RTK-GPS to precise navigation of a mobile vehicle. On the condition under the clear sky, RTK-GPS provides fair performance even in the mobile environment. The performances includes availability of solutions, accuracy, TTF (time to fix), and reliability of integer ambiguity resolutions. However, in urban area like in a downtown street, RTK-GPS shows poor performance. One reason of the performance degradation on such condition is cycle slips. Cycle slips are defined as the discontinuities in the measured carrier-phase caused by loss-of-lock of signal tracking in GPS receivers. A sudden jump of the carrier-phase measurement forces the integer ambiguity discontinuity. The Main sources of the cycle slips are obstructions of GPS signals due to buildings, trees or bridges. So the cycle slips much more occur in mobile environment than in static conditions. In the most of the RTK-GPS receivers, once a cycle slip detected, the estimated integer ambiguity is reset to the initial state. This reinitialization process often takes a few minutes, so the precise solution is not provided in the period. With frequent cycle slips, the availability of the RTK-GPS solutions becomes very low. Additionally, it is not easy to recognize a small cycle slip in the mobile environment. The miss-detection of the cycle slip much degrades the RTK-GPS accuracy. Reliable cycle slip detection is more important on this situation. One of the major technical issues for the mobile environment RTK-GPS is to overcome the cycle slips.For mobile vehicle navigation with GPS, a low-cost MEMS (micro-electro-mechanical systems) IMU (inertial measurement unit) is sometimes integrated to improve the performance. In such GPS / IMU integrated system, the IMU is used to obtain user positions and velocities during the GPS signal outages. For mobile environment RTK-GPS, this IMU integration is also effective to improve the navigation conditions. In this study, we employed tightly coupled GPS / IMU integration in order to detect and repair the cycle slips for RTK-GPS. As for the tightly coupled GPS / IMU integration, the user position, velocity and attitude are estimated by EKF (extended Kalman Filter) by using both of GPS and IMU measurements. The sensor biases of the gyros and accelerometers of the IMU are also incorporated in the filter, because sensor biases of a MEMS IMU are relatively large and time-varied. In addition to these unknown states, the double-differenced integer ambiguities are estimated in the case of RTK-GPS. The estimated float ambiguities by EKF are resolved into integer value by a usual integer ambiguity resolution way for RTK-GPS.In this study, in the measurement update of EKF, pre-fit residual of the double-differenced carrier-phase measurement, that is the difference between the predicted and observed state, is compared to the pre-defined threshold for the cycle slip detection. The measurement with larger residual than the threshold is marked as a candidate of the phase discontinuity by a cycle slip. After all the checks, the algorithm enters to the cycle slip repair process. The mount of the each cycle slip has usually the integer value of cycle. So the cycle slip amount as the unknown parameters, the integer vector search process runs to obtain the best estimated integer vector to minimize the least square residuals according to the covariance matrix of the predicted receiver position. To reduce computational cost to solve this ILS (integer least square) problem, the well known efficient strategy LAMBDA is employed to search proper integer vector in this study. Once best solution of the integer vector obtained, it is validated by simple ratio-test with the best and the second best solutions of ILS. If this discrimination test is passed, the states of the carrier phase integer ambiguities are updated by adding the integer vector to repair the cycle slips. If the test failed, the integer ambiguities are reinitialized and restart estimation process from guess estimation values. This proposed cycle slip detection and repair process can be applied to usual RTK-GPS algorithm without the IMU. However, it is hard to provide good performance without an IMU because of the low accuracy of the predicted user position.We made some field tests to demonstrate and evaluate proposed GPS / IMU integration scheme to detect and repair cycle slip for mobile environment RTK-GPS, NovAtel OEM-V dual-frequency GPS receivers were used for both of the mobile receiver (rover) and the reference station. The rover GPS antenna is mounted to the rooftop of a car. Analog Devices AD16354 6-DOF MEMS IMU device are also fixed on the car body. The rover receiver and IMU were connected to a laptop PC to record raw measurement data. At first we drove the car around the area with clear sky and few obstructions to acquire the raw measurement data of GPS and IMU. We processed the raw measurements of only GPS in the simulated RTK-GPS mode of RTKLIB. RTKLIB is a GPS post processing analysis software developed by the authors but has no function of the IMU data handling originally. Under such good condition, few cycle slips occurred and the RTK-GPS solutions showed the smoothed ground track. Next, we added the artificial integer cycle jumps to the raw carrier phase measurement of GPS to simulate the cycle slips. In this case, the availability of precise solution much decreased and some miss-detections of the cycle slips caused the sudden jumps of the car track. Furthermore, we implemented the proposed tightly coupled GPS / IMU integration and cycle slip detection and repair functions described above. The cycle slip detection and repair function with the IMU could fairly detect and repair the simulated cycle slips and made the ground track of the solutions smooth. The evaluation results are also demonstrated in more realistic situations like at the downtown streets with many cycle slips.

The invention provides a whole vehicle time setting and synchronizing system and method, and the method comprises the steps: when a GPS antenna is arranged, an IVI receives a GPS signal transmitted by the GPS antenna, and decodes the GPS signal into GPS time; the GPS time is coded into a first CAN signal and then sent to the IC; when no GPS antenna exists, taking the initial time as an initial value, and taking the initial value as system time after timing; coding the system time into a second CAN signal and then sending the second CAN signal to the IC; acquiring corresponding time according to the defined IVI configuration code, and writing the corresponding time into system time; the IC updates the GPS time in the first CAN signal to the instrument time, and the GPS time is used as a timing starting point to enable the crystal oscillator module to start timing; the instrument time is updated through the system time in the second CAN signal, and the system time is used as a timing starting point, so that the crystal oscillator module starts timing; implementing a time synchronization strategy according to the time synchronization signal; and the time source of the whole vehicle is unique.

The invention discloses a real-time analysis and intelligent diagnosis system and method for a vehicle fixed sliding test. The system comprises a vehicle-mounted driver assistant, a data box and a GPS antenna. The GPS antenna is used for collecting driving speed, distance and time data of a vehicle in a test process; the data box is in communication connection with the GPS antenna and is used for summarizing and calculating the collected data and transmitting the data and a primary processing result to a vehicle-mounted driver assistant in real time; and the vehicle-mounted driver assistant is used for providing a visual operation interface, supporting test parameter configuration, test process monitoring, data display and operation instruction input, and is internally provided with an intelligent diagnosis module and a sliding database. According to the scheme, the test data are monitored in real time through the vehicle-mounted computer, the test data are screened according to actual test conditions, invalid data are eliminated, the test efficiency is improved, and the test cost is reduced.

1. The name of the design product: waterproof antenna shell (round shell two-in-one). 2. The use of the design product: for fixing and protecting GPS antenna and parts. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model discloses an intelligent weeding robot, which relates to the field of weeding robots and comprises a weeding structure arranged at the bottom of a rack, the weeding structure consists of an adjustable support and a laser weeding structure, and the laser weeding structure comprises a pumping laser transmitter, a heat dissipation structure and a high-definition camera. A heat dissipation structure adopts the design of a hollow shell, a heat dissipation fin group and a micro circulating pump, and cooling liquid circulation is combined with a barb-shaped auxiliary heat dissipation sheet, so that the laser can efficiently dissipate heat and stably operate for a long time; a walking structure, a control device and a machine cover with a GPS antenna and a shadowless lamp are arranged on the machine frame, a protection plate and a steering engine drive walking wheel are arranged on the machine frame, an obstacle avoidance radar is arranged on a hub motor shaft, and the laser radar, the shadowless lamp, the GPS antenna and the like are electrically connected with a PLC to achieve intelligent control. Soil disturbance is avoided through laser precise weeding, the reliability of equipment is improved through a heat dissipation structure, the recognition precision is improved through a high-definition camera, and the autonomy of GPS navigation and obstacle avoidance functions is enhanced.

An antenna assembly can include a cover and a base configured to be removably coupled to the cover. The antenna assembly can include one or more of: a UHF radiator portion, a VHF radiator portion, one or more multi-band radiator portions, one or more dual-band WiFi radiator portions, a GPS antenna, and a loop antenna portion positioned between the cover and the base. The loop antenna can be suspended below the UHF and VHF radiator portion and above the multi-band and dual-band WiFi radiator portions, and can be configured for AM and FM radiofrequency signals. The antenna assembly can be used for broadcast television reception and multi-band wireless telecommunications. The antenna assembly can have a compact aerodynamic profile. The UHF radiator portion and VHF radiator portion can be formed on separate flex-circuits that can be coupled to internal ribs in the cover.