102 results about "Radar gun" patented technology

Provided is a system for identifying vehicles of traffic violators, the system having elements that include: a video camera for providing, in real-time, a video signal that represents plural sequential video image frames (either perceptually continuous video, such as 30 frames per second, or non-perceptually continuous video, such as 1-2 fps); a traffic violation detector (e.g., a radar gun, an in-ground loop, a pair of self-powered wireless transponders or transmitters, a camera-based speed detection system, or any other speed sensor) that provides a trigger signal (e.g., based on vehicle speed and detection of the state of a traffic signal); a video recorder that receives the video signal provided by the camera and records the video signal in a buffer until receipt of a trigger signal, at which point at least a portion of the video signal stored in the buffer is preserved for recording and direct real-time storage of the video signal to a hard drive, or other high-capacity storage medium, commences. As a result, the video signal is preserved during a pre-programmable sliding (or rolling) time interval prior to provision of the trigger signal.

The invention discloses a barrier-free automatic lifting speed bump and a control method. The speed bump comprises a radar speed indicator, four guide rails, a speed reducing plate, four sliding wheels, a plurality of upper supporting rods, a plurality of lower supporting rods, a plurality of link rods, a left push-pull rod, a right push-pull rod, two groups of push-pull electromagnets, a plurality of push-pull springs, a thrust electromagnet, a plurality of thrust springs, a thrust rod and a control device. The barrier-free automatic lifting speed bump has no barrier to the normal running vehicles, and can forcibly decelerate the over-speed vehicles, so that the road running comfortableness and the running safety can be improved, the noise is reduced, the service life of a tyre is prolonged and the overhauling expense is reduced. In addition, the control method is simple and convenient.

The invention relates to an intelligent anti-collision guardrail structure. The intelligent anti-collision guardrail structure consists of a power system, an anti-collision system, a car preventing system, a violation and evidence obtaining system, an intelligent system, an alarming and reminding display system and a control system. The power system consists of a solar cell panel, a storage battery, a motor, a speed changing box, a hydraulic motor and a hydraulic pump. The anti-collision system consists of a lifting subsystem, a flexible protection subsystem, a semi-rigidity protection subsystem, a rigidity protection subsystem, an air cushion protection subsystem and a magnetic protection subsystem. The violation and evidence obtaining system consists of a camera, a video camera, a radar tachymeter, a wifi device, a GPS device and a data rod. The intelligent anti-collision guardrail structure has the advantages of being high in intellectualization, capable of adjusting a collision angle, high in construction speed, convenient to maintain and long in service life.

The invention belongs to the technical field of automatic measurement and control of agricultural mechanical equipment and relates to a fruit-tree precise positioning mobile vehicle-mounted device for an orchard, in particular to a fruit-tree positioning map constructing method, comprising a mobile platform, a GPS (global position system) positioning module, a laser detection module and a vulgar cruising module. According to the characteristics of the distribution of the fruit trees in the orchard, a wheeled mobile platform which can walk between the rows of fruit trees is adopted, and a laser distance measuring instrument, an inertial measurement device, the GPS positioning module, a radar speed measuring instrument and a measuring and controlling board card are combined together, thus the fruit trees are positioned and identified quickly and effectively in the low-speed cruising state, the information of the distribution of the fruit trees is obtained, the orchard positioning map is constructed in real time, the information of growth and distribution of the fruit trees are obtained accurately, and scientific technological means are provided for the accurate pesticide applying of the fruit trees, the scale operation of the orchard and the precision agriculture digital management.

The invention relates to an intelligent management system for safety maintenance monitoring of road traffic. The system is composed of a monitoring center controller, a wireless transmission module, acloud server, a radar tachymeter, a warning lamp, a frequency modulation loudspeaker, a motor alarm device, and field safety equipment with a gyroscope and an RFID chip arranged inside. The radar tachymeter is connected with the monitoring center controller by the wireless transmission module; the monitoring center controller is connected with the cloud server by the wireless transmission module;the cloud server is connected with the motor alarm device, the warning lamp, and the frequency modulation loudspeaker respectively; and the motor alarm device, the warning lamp, and the frequency modulation loudspeaker are arranged at the side ahead of a road maintenance area. The field safety equipment feeds back position information and inclination state information to the monitoring center controller by means of wireless transmission. Compared with the prior art, the intelligent management system has the following advantages: warning with different levels are sent out according to distances between over-speed vehicles and a road maintenance area and vehicle speeds; and the effect of inclination prevention of the safety equipment is good.

The invention discloses a highway safety distance checking system and a detection method thereof. The system comprises wireless magnetoresistive sensors, a radar chronograph and a video image acquisition unit, wherein the wireless magnetoresistive sensors are connected with an industrial control computer through access point equipment, and both the radar chronograph and the video image acquisition unit are connected with the industrial control computer. The detection method includes: after the system is initialized, outputting vehicle detection information to the industrial control computer via the access point equipment and TCP / IP (transmission control protocol / internet protocol) through the wireless magnetoresistive sensors, recording time tn at the moment through the industrial control computer, calculating distance between two adjacent vehicles through speed recorded by the radar chronograph, judging whether the vehicles violate regulations or not according to the distance and the speed, and performing photographing and acquisition on vehicle information if so. The highway safety distance checking system can detect longitudinal vehicle distance of front and back adjacent vehicles in a fixed section of a highway automatically, judges whether the vehicles violate the regulations or not, photographing the vehicles for evidence if so, automatically recognizes plate numbers, and establishes and stores the information of the vehicles violating the regulations.

The invention discloses an on-site test method for a radar speed detector. The method includes the steps of enabling a small vehicle provided with a microwave antenna matched with the radar speed detector to pass through the radiation area of the radar speed detector in the running direction of the vehicle on a road provided with the radar speed detector, finding the point with the maximum power and the points with the power 3 dB lower than the maximum power, measuring a physical included angle alpha between the radar speed detector and the running vehicle, an angle alpha 1, generated when the vehicle enters one of the points with the power 3 dB lower than the maximum power, between the radar speed detector and the running vehicle, an angle alpha 2, generated when the vehicle leaves the other point with the power 3 dB lower than the maximum power, between the radar speed detector and the running vehicle, and the distance L between the position where the vehicle enters the one of the points with the power 3 dB lower than the maximum power and the position where the vehicle leaves the point with the power 3 dB lower than the maximum power, measuring the microwave transmitting frequency of the radar speed detector to obtain the error of the microwave transmitting frequency of the radar speed detector, imputing alpha 1, alpha 2, L and a speed to be detected into a moving target speed simulation device, and detecting the speed error of the radar speed detector through the moving target speed simulation device. The on-site test method is high in safety performance, high in accuracy and high in stability, and enables data to reappear, work pressure of technical staff is reduced, and work intensity of the technical staff is lowered.

The invention discloses an intelligent road line supplementation system based on unmanned aerial vehicle cooperation and a method thereof. The intelligent road line supplementation system comprises an unmanned aerial vehicle, a connecting device and a line drawing mechanism. The unmanned aerial vehicle is connected with the connecting device through an iron chain and provided with a camera device and a navigation device. The line drawing mechanism comprises a processor, a sign line extraction device, a positioning device, a spraying device and a drive device. The processor is connected with the unmanned aerial vehicle, the navigation device, the sign line extraction device, the positioning device and the drive device. The camera device is connected with the sign line extraction device. The drive device is connected with the spraying device and used for driving the spraying device for line drawing. A laser range finder and a radar speed detector are arranged in front of the line drawing mechanism and connected with the processor. The laser range finer is used for detecting the distance between a front obstacle and the line drawing mechanism. The radar speed detector is used for detecting the incoming speed of the front obstacle. The bottom of the line drawing mechanism is provided with wheels and wheel brackets. The wheels and the wheel brackets are connected with the drive device.

The invention provides a motor vehicle radar speed measurement meter field detection device and a simulation method which are used for on-site detection of a detected motor vehicle radar speed measurement meter. The device comprises a movement target simulation device, a microwave frequency counter, a microwave power meter, an industrial control machine, a closed-loop control pan-tilt and a range finder function unit. The movement target simulation device receives microwave signals of the detected motor vehicle radar speed measurement meter, doppler signals are superimposed, then modulation microwave signals are emitted to the detected motor vehicle radar speed measurement meter, the microwave frequency counter and the microwave power meter receive microwave emission frequency and emission power of the microwave signals respectively, the industrial control machine is connected with the microwave frequency counter / the microwave power meter, the ranging finder and the closed-loop control pan-tilt so as to receive and process data, control operation of function units and coordinate the detection device to automatically finish the whole detection process, the problem that authenticity and repeatability in the motor vehicle radar speed measurement meter on-site detection process are difficult to consider is solved, and a scientific, safe and efficient on-site simulation scheme is provided for detection.

The invention discloses a diesel vehicle gaseous exhaust pollutant remote sensing detection system and method. The system comprises a diesel vehicle exhaust emission measurement device, a main controlcomputer, an information display device, a vehicle driving state monitoring device, a meteorological monitoring device and a vehicle license plate recognition device. The diesel vehicle tail gas emission measuring device, the information display device, the vehicle driving state monitoring device, the weather monitoring device and the vehicle license plate recognition device are in communicationconnection with the main control computer, and the main control computer is connected with the motor vehicle emission monitoring platform through the Internet. The vehicle driving state monitoring device is a vehicle speed and acceleration measuring instrument or a radar tachymeter. Compared with a traditional detection system, the remote measurement technology is adopted, the concentration of gaseous emissions in diesel vehicle tail gas can be measured in real time, and the system is suitable for tail gas emission detection of various motor vehicles provided with diesel engines and has the advantages of being convenient to operate, rapid and efficient.

The invention discloses a leg structure of a mobile speedometer, and belongs to the field of vehicles. The leg structure of the mobile speedometer includes a support leg, the support leg is slidably coupled to a support cylinder through a sliding sleeve, and the support leg is rotatably coupled to the sliding sleeve; a pneumatic cylinder is fixedly connected to the bottom side of the sliding sleeve through a connecting rod; a pneumatic rod is connected to the pneumatic cylinder; the pneumatic rod is connected to the support leg; an inflator is fixedly connected to the support cylinder; and theexhaust end of the inflator is connected with the pneumatic cylinder through a connecting pipe. The support leg supports the radar speedometer for measuring speed, thereby ensuring stability; the support leg is stably placed on the ground, and when the support leg is folded, the support leg is rotated and reset for storage, the occupied space is reduced, movement is facilitated, and detection ofdifferent road sections is achieved.

The invention discloses an anti-bird device comprising a radar gun detection system, a control processing system and an anti-bird unit. The control processing system is connected with the radar gun detection system and used for receiving detection signals sent by the radar gun detection system and judging whether or not to send driving signals to the anti-bird unit according to the detection signals; the anti-bird unit is connected with the control processing system and used for receiving the drive signals sent by the control processing system and responding to the drive signals. Through the arranged radar gun detection system, detection can be realized before the birds fall on high-tension cables, so that difficulty in detection of bird damage is lowered greatly, and the technical problem that related anti-bird devices are poor in anti-bird effect due to difficulty in detection of the birds is solved.

The invention discloses an automatic monitoring system of a vehicle with high-speed movement, and relates to a vehicle monitoring system. According to the automatic monitoring system of the vehicle, basic data is acquired in a synchronous manner by employing a laser sensor and a radar speed detector, the data is transmitted to a data processor, a mathematical model is established, an algorithm is designed, appearance characteristics of the vehicle are described by employing the data processor, the position of a lane at which the vehicle is located is determined, and speed feedback and data statistics of the vehicle are performed. According to the automatic monitoring system of the vehicle with high-speed movement, the mathematical model is established and the algorithm is designed by employing the data synchronously obtained by the laser sensor and the radar speed detector to restore the appearance of the vehicle, and the lane at which the moving vehicle is located and speed information can be fed back; and by employing matched hardware facilities, the road condition of the highway can be truly restored, the operation condition of the vehicle can be monitored, and the geometric characteristic and the corresponding speed of each vehicle in movement can be extracted.

The invention provides a radar speed measuring instrument applied to a tunnel and provided with a rapid mounting support. The radar speed measuring instrument comprises a first piston rod, a pipeline,a second piston rod, a clamping rod, a conical block, a base, a mounting seat and a sleeve, the first piston rod is installed on the upper side in the pipeline through a micro spring, the right end of the first piston rod penetrates through a positioning rod to extend into the clamping rod, the pipeline is arranged in the base, the second piston rod is installed on the lower side in the pipelinethrough a second micro spring, the clamping rod is fixed on the portion, on the right side of the positioning rod, of lower end face of the mounting seat through a screw, the lower end of the clampingrod extends into the base, the conical block is fixed at the portion, on the right side of the clamping rod, of the lower end of the mounting seat through a screw, the lower end of the conical blockextends into the base, the conical block is attached to the second piston rod, and the sleeve is arranged on the annular side surface of the fixing column. Through the design, the use is convenient, assembling and disassembling are facilitated, moreover, the fixing effect is good, and height and direction can be conveniently adjusted.

The embodiment of the invention discloses a water channel flow velocity and flow rate measuring method, device and system. The system comprises an unmanned aerial vehicle, a processor which carries out data transmission, and a radar chronograph. The processor automatically plans a flight course of the unmanned aerial vehicle according to position information of each measuring point, measuring duration and a preset flying height so that the radar chronograph installed on the unmanned aerial vehicle can measure the flow velocity of each measuring point of a water channel to be tested during a flight process according to the flight course, and measurement data is sent to the processor through the unmanned aerial vehicle. The processor calculates and acquires the flow rate of the water channel to be tested according to the measurement data of the radar chronograph, the cross-section information of the water channel to be tested, water level data information, each preset flow measurement parameter value, and the position information of each measuring point. In the invention, water channel flow measurement operation can be remotely performed, a potential safety hazard of water channel flow velocity and flow rate measurement is eliminated, the personal safety of hydrological test personnel is ensured, and the efficiency and the accuracy of the water channel flow velocity and flow rate measurement are increased, which is good for improving hydrologic monitoring quality.

The invention discloses a method for measuring short-term frequency stability of unconventional sampling time, which comprises the following steps of: measuring the frequency stability of a measured component by using a phase noise testing system; after ending the measurement by using the phase noise testing system, utilizing a frequency stability processing module to extract the frequency stability measured values of a plurality of sampling points of the measured component; and utilizing the frequency stability processing module to select an interpolation algorithm according to a frequency stability curve, and set an interpolation point of the unconventional sampling time, thereby acquiring the short-term frequency stability of the unconventional sampling time of the measured component. The method can be used for accurately measuring the short-term frequency stability of the unconventional sampling time of a radar tachymeter calibrating device and efficiently monitoring the quantity transmission of the radar tachymeter calibrating device.

A method for automatically measuring flow of an open channel by use of a radar speed indicator comprises steps as follows: the radar speed indicator is arranged above the center of the open channel with a fixed section shape, the height hd of the radar speed indicator above the water surface of the open channel is measured through wave beams perpendicularly shot to the water surface by the radar speed indicator, the sectional area A and the water surface width B of water flow below the radar speed indicator as well as the radar wave covered water surface width s are further solved, a mathematical model is established through the surface flow velocity vsm corresponding to the radar wave covered water surface width s, the average flow velocity vc of the cross section of the whole water bodyis solved, and finally, the flow of the open channel is solved by use of A and vc. The flow velocity coefficient is automatically determined according to the mounting height of the radar speed indicator through the established mathematical model, the flow of the open channel is automatically measured through the radar speed indicator, and manual testing and calibration of the flow speed coefficient are avoided.

The invention discloses an expressway passage dynamic vehicle speed measuring method. The method includes that a first group of sensor nodes, a second group of sensor nodes and a third group of sensor nodes input information, the opening and closing time of a radar speed measuring instrument is calculated according to on-off signals of the three groups of sensor nodes to accurately measure speed information of vehicles when a ray machine scans the vehicles. By means of the method, the speed of the dynamic vehicles can be well measured, and scanned image restoring effectiveness can be further ensured.

The invention discloses a movable speed measuring instrument, and belongs to the field of traffic tools. The movable speed measuring instrument comprises a radar speed measuring instrument body and asupporting cylinder, wherein the supporting cylinder supports the radar speed measuring instrument body through a supporting plate, a base is arranged on the bottom side of the supporting cylinder ina sliding mode, the bottom side of the base is connected with universal wheels, the base is slidably connected to the bottom side of the supporting cylinder through an inserting rod, a sliding sleeveis slidably connected to the supporting cylinder, and supporting legs are connected to the sliding sleeve. The instrument have the advantages that different road segments can be detected, but the instrument needs to be placed on the roadside for detection, the inserting rod moves upwards to put the base and the universal wheels away, meanwhile, the sliding sleeve is moved downwards, the sliding sleeve drives the supporting legs to be moved downwards, so that the supporting legs support the radar speed measuring instrument body for speed measuring, at the moment, the universal wheels are separated from the ground, the supporting legs are used for supporting, so that the stability is ensured, moving is facilitated when moving is required, and a support is required to be fixed on the ground when speed measuring is carried out, so that the stability of the instrument is ensured.

The invention discloses an electric vehicle active speed-limiting control system based on a navigation map. The electric vehicle active speed-limiting control system comprises an active speed-limitingcontrol device, a vehicle control system, a vehicle computer system, a motor controller, a BeiDou Navigation Satellite System (BDS) and a radar speedometer, wherein the vehicle computer system selects a low value from first speed-limiting information and second speed-limiting information to form speed-limiting information of a current position; when the active speed-limiting control device is triggered, the vehicle control system outputs a speed request command by comparing vehicle speed information with the speed-limiting information; and the motor controller adjusts the rotational speed ofa driving motor according to the speed request command. The electric vehicle active speed-limiting control system based on the navigation map disclosed by the invention realizes active control of thevehicle running speed based on the navigation map built in a vehicle computer, and at the same time enables a driver to select whether to allow a vehicle to implement the active speed-limiting controlaccording to the need.

The invention relates to an overspeed-law-violation snapshot and gate monitoring system and a use method thereof. The system includes a front-end storage device, a high-definition intelligent camera and a single-lane radar tachymeter. The high-definition intelligent camera includes a high-definition shooting module, a high-definition snapshot module and a processor module. The single-lane radar tachymeter, the high-definition shooting module and the high-definition snapshot module are in circuit connection with the processor module respectively. The processor module is in circuit connection with the front-end storage device. Preferentially, the frame rate of high-definition images acquired by the high-definition shooting module is not lower than 15 frames / second. The front-end storage device is an industrial personal computer or a management center system. The overspeed law-violation snapshot and gate monitoring system also includes a light supplement system in circuit connection with the processor module and also includes a regulation violation penalty system in circuit connection with the front-end storage device. A use method for the overspeed law violation snapshot and gate monitoring system is also provided. The overspeed law-violation snapshot and gate monitoring system is skillful in design, simple in structure, simple and convenient to install, low in maintenance workload, precise in snapshot, high in instantaneity and suitable for large-scale popularization and application.

The invention discloses a rapidly fixable road radar speed measuring device including a radar speedometer. A push rod motor is arranged at the upper end of the radar speedometer. A handle is arrangedon the side of the push rod motor. A battery and an electric push rod are arranged inside the handle. A control switch 1 is disposed at one side of the handle. A mounting block is disposed at one endof the handle. A control switch 2 is disposed at the mounting block. An organic cylinder is disposed at the side of the mounting block. An electric hydraulic push rod 1, an electric cylinder and a stepping motor are disposed in the organic cylinder. An electric hydraulic push rod 2 is arranged on the side of the electric cylinder. The rapidly fixable road radar speed measuring device can rapidly fixes the radar speedometer on a vertical bar or a horizontal bar without the supporting and fixing of a bracket, the radar speedometer is easy to install and uninstall, the trouble of carrying the bracket is prevented, time and effort are saved, and The rapidly fixable road radar speed measuring device has good practicality.

The invention discloses a vehicle interception equipment control system. The vehicle interception equipment control system comprises a radar tachymeter, a license plate identification camera, an input and data processing module, a control module, an execution module and an upper computer. The input and data processing module comprises a speed distance judging module and a license plate identification module, and the speed distance judging module and the license plate identification module are electrically connected with the radar tachymeter and the license plate identification camera. One end of the license plate identification module is further electrically connected with the speed distance judging module. The control module is internally provided with a single-chip microcomputer, and the control module is electrically connected with the input and data processing module, the execution module and the upper computer. The vehicle interception equipment control system has the advantages that the control system is capable of being linked with the radar tachymeter and the camera license plate identification system so as to automatically control the operation of vehicle interception equipment according to the operation speed and license number information of a vehicle, so that the purpose of intelligent vehicle automatic interception is achieved; in addition, the practicality is high, and the vehicle interception equipment control system is easy to popularize and use.

The invention discloses a road vehicle traveling velocity vertical velocimeter and a method thereof. The vertical velocimeter comprises a first optical interferometer, a laser range finder, a second optical interferometer, a timer and a control device. The first optical interferometer and the second interferometer are horizontally placed, and the included angle of the first optical interferometer and the second optical interferometer is theta. The laser range finder is placed on the angular bisector of the included angle. The first optical interferometer, the laser range finder, the second optical interferometer and the timer are all connected with the control device. According to the vertical velocimeter, a laser interference detection technology is used, the signal to noise ratio of detection is high, and the accuracy of velocity measurement is high. Compared with a laser velocimeter and a radar velocimeter (the two velocimeters need to be kept in the same straight line as a vehicle when being used for measuring), the measuring direction of the vertical velocimeter is perpendicular to a road, and using is safe. The vertical velocimeter can work in an all-weather mode, continuous measuring can be achieved, compared with coil velocity measurement, the cost is low, and a road surface does not need to be damaged.

The invention discloses a tractor rear suspension device and a control method thereof. A left lifting oil cylinder of a tractor is connected to a left lower pull rod, the left lower pull rod is connected to a left hanging point of a farm tool through a left force measuring pin shaft in a hanging mode, a right lifting oil cylinder of the tractor is connected to a right lower pull rod, the right lower pull rod is connected to a right hanging point of the farm tool through a right force measuring pin shaft in a hanging mode, and an upper lifting oil cylinder of the tractor is connected to an upper hanging point of the farm tool in a hanging mode; the upper lifting oil cylinder is provided with a first attitude sensor, and the right lower pull rod is provided with a second attitude sensor; a hall sensor and a radar speed measuring instrument are arranged on the tractor; a controller receives and analyzes data sent by the left force measuring pin shaft, the right force measuring pin shaft,the first attitude sensor, the second attitude sensor, the hall sensor and the radar speed measuring instrument; and a hydraulic valve set is used for controlling actions of the left lifting oil cylinder, the right lifting oil cylinder and the upper lifting oil cylinder on the basis of analysis results. According to the tractor rear suspension device, the working condition of the tractor rear suspension device can be analyzed in real time, and the telescopic amount and the pressure of the oil cylinders are optimized and controlled.

The invention discloses a vehicle speed monitoring method based on a flink architecture, and the method comprises the steps of collecting data through a radar tachymeter, carrying out the data cleaning through a Flink platform, analyzing the data that the vehicle speed is greater than a speed limiting threshold value and the distance between vehicles is less than 200 meters through the flink platform, and obtaining the vehicle driving information; performing message consumption by using the flink platform, feeding overspeed vehicle information in the driving safety range back to the vehicle-mounted system, and enabling the vehicle-mounted system of the vehicle to report the overspeed vehicle condition to a driver; and meanwhile, performing data storage, so that historical data can be read,an overspeed accident investigation basis can be provided for traffic polices, and overspeed accidents can be simulated.

The invention provides an intelligent solar endurance monitoring method. The intelligent solar endurance monitoring method comprises the steps of enabling a monitoring camera to sleep at the initial time and enabling an LED dot-matrix type supplement light to not emit light at the initial time; detecting whether a movable object exists in real time by a radar chronograph; if so, controlling the monitoring camera to start monitoring and controlling light supplementation, and sending a monitored picture to a central control server by a controller; and if not, controlling the monitoring camera to turn back to the sleep state, controlling the LED dot-matrix type supplement light not to carry out light supplementation, and repeating the detection to realize intelligent endurance monitoring. The invention also provides an intelligent solar endurance monitoring system which comprises the central scheduling server and the intelligent solar endurance monitoring device; the intelligent solar endurance monitoring device comprises a lamp column, a support rod, the controller, the radar chronograph, the monitoring camera, the LED dot-matrix type supplement light and the central control server; and a storage battery is connected with a solar photovoltaic board. As intelligent endurance control is adopted, the endurance capacity is enhanced greatly, and the operational and maintenance cost is saved.

The present invention discloses a photograph radar speed indicator convenient to regulate an angle. The photograph radar speed indicator comprises a support pillar, the top portion of the support pillar is provided with a solar energy light panel, the outer wall of the right side of the upper end of the support pillar is connected with a support plate, front and back ends of the top portion of thesupport plate are respectively provided with fixed blocks, opposite end faces of the two sets of the fixed blocks are connected with a fixed rod, the top portion of fixed rod is movably connected with the radar speed indicator, the bottom portions of the outer walls of the front and back sides of the radar speed indicator are connected with spacing rings, and the top portion of the fixed rod is connected with an electric expansion link. Through fore and aft movement and regulation of angles up and down, the radar speed indicator can perform omnibearing velocity measurement and photograph fordifferent areas on a road to better restrict drivers to obey the traffic rules, reduce the occurrence of traffic accidents, ensure that the structures are not mutually interfered when the radar speedindicator performs angle regulation and allow the radar speed indicator to better and more rapidly work, and therefore, the structure is simple, and the usage is convenient.

The invention provides a device for tracking the dynamic characteristics of floating bubbles and the flow field characteristics in real time, which comprises a floating bubble generation device, a bubble motion tracking and photographing device and a hydrogen bubble generation and tracking device, wherein the floating bubble generation device comprises a glass box, an air pump, a gas collecting funnel and an electrolyte; the glass box is a square two-wall glass box, and an electrolyte which is the same as the electrolyte in the glass box fills the gap between the two walls; the bubble motion tracking and photographing device comprises a high-speed camera and a radar velocimeter; the high-speed camera is arranged on an electrically-controlled lifting platform; the radar velocimeter controlsthe motor on the electrically-controlled lifting platform through a signal conversion device and an electric pushing rod velocity regulator; and the hydrogen bubble generation and tracking device isformed by a cathode, an anode, a DC power supply, a pulse generator, a photocell and a lighting device. The structure design is novel, the operability is strong, the operation cost is low, and the dynamic characteristics of the floating bubbles and the surrounding flow field change conditions can be tracked in real time.