14 results about "Radar gun" patented technology

The invention discloses an intelligent access control anti-collision barrier gate, and particularly relates to the technical field of access control barrier gates, the intelligent access control anti-collision barrier gate comprises a base, a case is fixed at the top end of the base, a blocking piece is arranged on one side of the case, a deceleration strip is arranged at the bottom of the blocking piece, and an automatic license plate recognizer is fixed at the top end of the base through a mounting frame and used for recognizing license plate information of a vehicle. A radar velocimeter is fixed on the mounting frame and is used for acquiring the driving speed and acceleration data of a vehicle in the process of approaching a barrier gate in real time, and a panoramic camera is fixed at the top end of the case and is used for shooting the driving track of the vehicle so as to judge whether the vehicle maliciously intrudes into a community or not. The vehicle behavior can be intelligently judged, so that the registration release or blocking interception process is triggered, the safety and the passing efficiency are both considered, the daily life of residents is facilitated, and the internal management of a community is facilitated.

The application discloses a highway ramp speed measurement error compensation method based on a binary polynomial fitting. First, the measured ramp speed measurement environment is deployed, and time is matched. Second, the standard speed of the test vehicle, the speed measurement value and the distance measured by the radar speed measurement instrument at the same time are collected, and the measured ramp speed measurement data sample set is made. Then, the ramp speed fitting model is established, the training sample set is input into the ramp speed fitting model for data fitting and calibration. Finally, the calibrated binary polynomial is obtained, the ramp vehicle speed measurement value of the radar speed measurement instrument which needs to be corrected and the captured setting distance are input into the obtained binary polynomial for calculation, and the standard speed after error compensation is output. The application captures the ramp road environment characteristics through data fitting and calibration, realizes adaptive error compensation and measurement value correction of the ramp vehicle speed measurement of the radar speed measurement instrument, and avoids complex mathematical modeling.

The invention belongs to the technical field of liquid metal 3D printing, and particularly relates to a melt impact jet flow regulation and control system for an open launder. A pressure heat preservation device inputs gas into the pressure heat preservation device through a gas conveying pipeline and controls the gas flow to control the pressure in the pressure heat preservation device; the molten metal in the pressure heat preservation device is sprayed to a cooling platform located under the spraying device through the spraying device to be cooled; the laser Doppler radar velocimeter monitors the metal liquid jet velocity in real time and uploads the metal liquid jet velocity to the upper computer, the gas flow needing to be adjusted is calculated through a PID algorithm, a corresponding adjusting control instruction is generated and issued to the MFC and the electromagnetic valve or the small-aperture exhaust valve and the large-aperture exhaust valve, and therefore control over the jet velocity is achieved. Through jet velocity feedback monitored in real time, the flow of gas input into the pressure heat preservation device is adjusted in real time through a PID algorithm to control the pressure in the pressure heat preservation device in real time, and therefore accurate control over the jet velocity is achieved.

An irregular river channel cross-section flow measurement device and method, comprising a computer, a signal receiver, a left support and a right support. The left support and the right support are respectively arranged on the left and right sides of the river channel. A cable is provided between the left support and the right support, and the cable is perpendicular to the river water flow direction. A rotary connection seat for fixedly installing a sonic depth finder is fixedly arranged on the cable, or a movable pulley assembly for fixedly connecting a sonic depth finder and a radar speedometer is slidably arranged on the cable. The sonic depth finder and the radar speedometer transmit signals to the signal receiver through wireless communication, and the signal receiver is communicatively connected to the computer. The principle of the present invention is scientific and the operation is convenient. By using the rotary connection seat in cooperation with the sonic depth finder, the small-scale concave and convex conditions of the river channel cross-section can be better understood, and the river channel cross-section can be correctly simulated according to the angle and distance, and the test data is more accurate.

The utility model relates to a rhombic interchange ramp exit early warning system, which comprises a ground marking induction group arranged in front of an exit ramp shunting point, a vehicle speed warning system arranged at an exit shunting nose point, and an intersection information warning confirmation system arranged at a ramp landing section, the vehicle speed warning system comprises a first power supply, and a radar velocimeter, a single chip microcomputer and a variable information sign which are sequentially arranged along the traffic flow direction; and the intersection information warning confirmation system comprises a second power supply, and an intersection stop line lane information signboard, an infrared laser detection device and a warning marking line at the joint of the elevated section and the ground road landing section which are sequentially arranged along the traffic flow direction. Through a three-level sign system of'guiding, warning and confirming 'arranged at a front exit, more accurate and safer driving guidance is realized, so that the driving requirements of a driver on safe passing and smooth driving-out are met, and the traffic safety of a rhombic interchange exit road section is guaranteed.

The present invention discloses a speed measuring radar with a self-positioning function, comprising a tripod, an angle ruler, a radar speed gun, and a spirit level for angular reference positioning. A support plate is installed at the upper end of the tripod, the support plate includes a groove, the angle ruler portion is located in the groove, a fastening mechanism is installed on the support plate, the bottom surface of the movable ruler is in contact with the bottom surface of the groove, the movable ruler can rotate around a hinge point, the hinge point is located on the axis of the support plate, the support plate is also installed with a bottom support assembly, the bottom support assembly includes a supporting ring 2, the supporting ring 2 is coaxial with the support plate, the radar speed gun is rotatably connected to the upper end of the supporting ring 2, the movable ruler is connected to a slider assembly away from the hinge point, the slider assembly includes a magnet 1, the bottom of the radar speed gun is connected to a connecting plate, the connecting plate includes a magnet 2, and the radar speed gun is manually rotated so that the magnet 1 and the magnet 2 complete the positioning. The present invention provides a speed measuring radar with a self-positioning function, which can quickly adjust the angle required for the radar speed gun to monitor, and has higher speed measurement accuracy.

A system and method for automating markerless motion capture by integrating radar tracking, embedded computing, machine vision, and machine learning techniques. A radar gun tracks object speed and triggers an embedded computer system. The embedded system decodes signals from the radar gun and triggers high-speed cameras to capture video footage. Machine learning algorithms optimize camera settings and triggering accuracy over time by analyzing captured biomechanical data.

The embodiment of the utility model discloses a radar speed measurement device, belongs to the technical field of radar speed measurement, and can be applied to business scenes such as expressways and urban roads. The radar speed measuring device comprises a shell and a radar speed measuring assembly. The shell comprises a shell body and a cover plate, the shell body is provided with a containing cavity, the containing cavity is provided with an opening communicated with the containing cavity in the first direction, and the cover plate covers the opening and is movably connected with the shell body so that the cover plate can open or close the opening; the radar speed measuring assembly comprises a radar speed measuring instrument, a controller and an electronic displayer, the radar speed measuring instrument and the electronic displayer are both electrically connected with the controller, the controller is arranged in the containing cavity, the radar speed measuring instrument and the electronic displayer are arranged on the cover plate, and the electronic displayer is configured to display at least one of the maximum speed limit and the real-time vehicle speed of the vehicle. The utility model provides a radar speed measuring device which is convenient to assemble, easy to disassemble, convenient to maintain in the later period and high in maintenance efficiency.

The invention provides a visual monitoring system for a railway wagon, and relates to the technical field of railway wagon monitoring. An area-array camera, a video camera, a first bayonet camera, a first light supplementing lamp, a radar velocimeter and a laser radar are arranged in the middle of the cross beam and used for obtaining upper image information, locking image information, vehicle speed and laser waveform information of the railway freight car; a linear array camera and a second light supplementing lamp are arranged in the middle of the stand column and used for obtaining compartment number image information. A second bayonet camera and a third light supplementing lamp are arranged on the lower portion of the stand column and used for obtaining connecting rod position image information of the railway wagon. The magnetic steel inductive sensors are arranged on the two sides of the fixing frame. The processor comprises an in-vehicle loading detection unit, a locking detection unit, a vehicle number identification unit and a connecting rod fracture detection unit; the problems that in-wagon loading detection, locking detection, wagon number recognition and connecting rod breakage detection of a railway wagon are lack of an automatic monitoring technology, depend on manual detection, and are large in workload and low in efficiency are solved.

The utility model discloses a radar-based vehicle speed detection device, and relates to the technical field of vehicle speed measurement, the radar-based vehicle speed detection device comprises a base, a radar velocimeter, an inclination angle adjusting assembly and a rotating ring, the inclination angle adjusting assembly and the rotating ring are additionally arranged on the base, the detection end face of the radar velocimeter faces the ground, and the radar velocimeter and a vehicle chassis are installed in an inclination angle shape; the device has the technical advantages that the radar velocimeter is additionally arranged at the bottom of the vehicle body, and the radar velocimeter is used for detecting the ground to recognize the vehicle speed in real time; through the inclination angle adjusting assembly, a gear meshing principle is utilized, and the base is taken as a reference, so that the rotating ring which is additionally provided with the radar velocimeter in the side direction rotates in the circumferential direction, and then inclination angle adjustment of the radar velocimeter is realized; when the radar velocimeter is not used, the radar velocimeter can be stored in the open type cambered surface structure of the fixed support, and the lateral positioning effect is provided for storage of the radar velocimeter through arc pushing of the arc-shaped baffle.

The utility model provides a clamping and positioning device of a mobile radar velocimeter, which is characterized in that the clamping and positioning device comprises a frame body, a velocimeter body and a mobile positioning device, the frame body comprises a mounting seat and a base, the top of the base is connected with the mounting seat, and the mobile positioning device is arranged below the base; an insertion hole is formed in the top of the mounting seat, a speed measuring instrument body is supported on the mounting seat, and a mounting rod is connected below the speed measuring instrument body and inserted into the insertion hole; the mobile positioning device comprises a telescopic mechanism, a positioning mechanism and a supporting mechanism; the output end of the positioning mechanism extends to the telescopic mechanism, the positioning mechanism is used for positioning the telescopic mechanism to keep an extension state or a shortening state, and the bottom of the telescopic mechanism is fixedly connected with the supporting mechanism used for supporting the frame body. The clamping and positioning device of the mobile radar velocimeter can be switched between a sliding mode and a fixed mode, so that monitoring data of the instrument are more accurate, meanwhile, the situation that the instrument is lifted manually to increase the labor cost is avoided, and meanwhile the risk of machine damage is reduced.

The utility model discloses an expressway surface operation safety early warning system based on the Internet of Things. The expressway surface operation safety early warning system comprises a speed limit sign assembly arranged in front of an expressway surface operation area and an intelligent bracelet worn on a construction related person. The speed limit sign assembly comprises a speed limit signboard with a speed limit label, a radar speed measuring instrument, a speed display screen, a single-chip microcomputer controller and a rechargeable battery are installed on the speed limit signboard, and the radar speed measuring instrument and the speed display screen are connected with the single-chip microcomputer controller. The single-chip microcomputer controller is wirelessly connected with the intelligent bracelet; the radar tachymeter monitors the speed of a passing vehicle and displays the speed on the speed display screen, when the speed of the passing vehicle exceeds the speed marked on the speed limit label, the single-chip microcomputer controller sends a vibration control signal to the intelligent bracelet through the wireless communication module, and the intelligent bracelet vibrates to give an alarm after receiving the control signal. Therefore, related construction personnel are reminded that overspeed vehicles enter the adjacent operation area and need to pay attention to safety, and safety precaution is made.

The present application provides a camera, comprising a body assembly, a lens assembly, a radar gun, and a motor. The lens assembly is located below the body assembly and is rotatably connected to the body assembly so as to rotate horizontally relative to the body assembly. The lens assembly includes a first lens. The radar gun is located outside the body assembly in the circumferential direction and is rotatably connected to the body assembly so as to rotate relative to the body assembly along its circumferential direction. The radar gun includes a gun rear cover assembly, one of which is provided with a first axial hole, and the other is provided with a first rotating shaft. The first rotating shaft is rotatably assembled in the first axial hole, so that the radar gun can rotate relative to the body assembly. The motor drives the radar gun to rotate, and the gun rear cover assembly is provided with a receiving chamber. The motor is located in the receiving chamber, so that the camera structure is compact and the volume is small.