120 results about "Microwave radar" patented technology

The invention belongs to the technical field of road tunnel illumination, and particularly relates to a control method and system for adjusting road tunnel illumination based on dynamic traffic, which comprises the following steps: firstly, acquiring vehicle information through a high-definition camera array, a microwave radar detector and an illumination intensity sensor in a multi-source manner, then preprocessing the multi-source data, and applying an algorithm to adjust the illumination of a road tunnel; traffic flow statistics and trend prediction, vehicle driving state analysis and vehicle type accurate classification statistics are realized; based on this, the traffic flow is counted and predicted in real time through the dynamic traffic information acquisition and analysis module, the illumination brightness reference value is set and corrected based on the traffic flow by combining the multi-dimensional illumination parameter intelligent decision module, and then the illumination execution and dynamic adjustment module accurately executes the brightness instruction. The method has the advantages that the illumination brightness is dynamically matched with the traffic flow, the traffic safety requirement during high traffic flow is met, and energy waste during low traffic flow is avoided.

The invention relates to a method for processing medical images of human tissue of an area of a patient's body and in particular of the breast by means of a medical imaging device (1) comprising a microwave probe array consisting of K>1 probes spaced apart from one another, the array comprising P>1 different configurations defining transmitting probes and receiving probes for one or more position(s) around the area, in which the transmitting probes are configured to transmit microwave signals so as to illuminate an area of the body and the receiving probes are configured to receive microwave signals after scattering and reflection in the area, the probes being capable, in a complementary manner, of being configured to transmit and receive simultaneously.

The invention discloses a 3D (three-dimensional) perimeter security system and an operation method thereof, the system comprises a server terminal, a front-end sensing system, a data transmission system and a central control system, the front-end sensing system is networked in multiple groups of partitions, and each group of partitions of the front-end sensing system is provided with a nine-axis sensor, an edge computing all-in-one machine and a switch; and lighting, wind and rain sensor, broadcasting, microwave radar and camera equipment. The data transmission system transmits data; the central control system comprises an application server and a data server. The system forms a first defense line for active detection of the microwave radar and the camera and a second defense line for vibration sensing of the nine-axis sensor, and a monitoring blind area is eliminated through three-dimensional data fusion. The operation method comprises four groups of subsystem modules. According to the method, 'sky-ground-fence 'dead-corner-free monitoring is realized, the false alarm rate is reduced by combining multi-modal data fusion with an intelligent algorithm, self-evolution is realized by edge-cloud federal learning, and threat disposal efficiency is improved by automatic linkage response.

The utility model discloses an Internet of Things tunnel interval controller combined with a digital microwave radar, and the controller comprises a radar module which is used for obtaining traffic flow information in a non-contact manner; the control module is used for executing logic judgment and generating a control instruction according to the traffic flow information acquired by the radar module; the data storage module is used as a nonvolatile storage space of the Internet of Things tunnel interval controller; the radio frequency communication module is used for realizing networking and remote management through an Internet of Things communication protocol; the power supply module is used as a power supply basis of the Internet of Things tunnel interval controller, and the power supply module is connected with the radar module, the control module, the data storage module and the radio frequency communication module; a tunnel interval control solution with high integration level, accurate vehicle detection, intelligent dimming decision, flexible wireless communication and high-reliability data management is jointly realized.

The invention provides a microwave and laser radar collaborative sensing adaptive perimeter monitoring method, and relates to the technical field of security monitoring and perimeter protection, a microwave radar array and a laser radar array are arranged in a perimeter area to be monitored, and a static environment three-dimensional baseline model is constructed by combining two types of radar data; filtering the microwave radar original signal, extracting target distance and speed information, denoising and smoothing the laser radar point cloud, and outputting a synchronous multi-source data stream; constructing an attention mechanism feature fusion network, respectively mapping the preprocessed features of the two types of radars into channel and space attention weights and carrying out weighted fusion, reasoning by using a lightweight target detection model, and outputting a target classification result, confidence and position information in real time; adjusting the weights of the two types of radars in the fusion network and laser radar scanning parameters according to a preset mapping relation based on real-time environment parameters, and dynamically updating a confidence threshold value of target detection at the same time; and when the target confidence exceeds a threshold value and the positioning error reaches the standard, triggering a grading alarm.

The invention provides a multi-reflection superposition enhanced microwave displacement measurement method and system, and the method comprises the steps: S1, constructing a microwave multi-reflection propagation path, enabling a microwave radar to transmit electromagnetic waves to the microwave multi-reflection propagation path as a transmission signal, and receiving a corresponding echo signal; s2, extracting length change information of a microwave multi-reflection propagation path according to the echo signal; s3, establishing a linear superposition relation model between the total length of the microwave propagation path and respective displacements of W reflection surfaces in the microwave multi-reflection propagation path; w2; and S4, based on the linear superposition relation model, displacement information of the corresponding reflection surface is obtained and output. According to the invention, a larger phase variation can be obtained under the condition of small displacement or weak vibration, so that the measurement sensitivity is improved and the signal-to-noise ratio is improved.

The invention relates to the technical field of zone control of illumination, in particular to a zone control method of an airplane passenger cabin scene illumination system, which comprises the following steps: acquiring real-time external natural light parameters of each porthole area in a passenger cabin and real-time passenger distribution data of each zone in the passenger cabin, and generating a first illumination distribution diagram through a ray tracing algorithm; real-time biological rhythm feedback signals of the passenger groups in all the partitions are obtained based on a non-imaging microwave radar sensor, the biological rhythm feedback signals comprise a first type of signals and a second type of signals, the current overall activity state of the passenger groups in all the partitions is judged based on the first type of signals, and the rest state depth is subdivided based on the second type of signals; and when the adjustment amplitude of the illumination parameters of the adjacent partitions exceeds a fifth preset threshold value, generating a natural transition zone of the illumination parameters between the adjacent partitions. By arranging the transition zone, the visual boundary is eliminated through gradient change of the transition zone of the adjacent partitions, and discomfort is reduced.

The invention discloses an intelligent electric power perimeter early warning and diagnosis method and equipment based on microwave radar shooting control, and the method comprises the steps: firstly collecting multi-dimensional data through a plurality of sensors, including microwave radar, video images, environment monitoring, electric power system operation, facility static information and the like; the microwave radar and video image data are preprocessed and subjected to space-time fusion, and target sensing information is obtained. Thirdly, constructing a three-dimensional digital twinborn model based on the static information of the facility, mapping the fused target sensing, environment monitoring and operation data into the model in real time, and generating a real-time twinborn situation; meanwhile, an electric power knowledge graph library is constructed, real-time twinning situations are associated, perimeter safety risks are recognized through semantic reasoning, grades are determined, and root causes are positioned through causal reasoning during faults. And based on the risk level and the real-time situation, dynamically evaluating the risk, generating adaptive early warning information, predicting the potential risk, giving a maintenance suggestion, and intelligently matching an emergency plan. The objective of the invention is to solve the defects of the prior art in the aspect of electric power perimeter safety early warning, realize the conversion from passive response to active prediction and intelligent decision, and improve the safety protection level and operation and maintenance efficiency of electric power facilities.

The invention belongs to the technical field of microwave radar image processing, and relates to a wind wave significant wave height inversion method based on a wind wave period, which comprises the following steps: firstly, establishing a significant wave height calculation model taking the wind wave period as input; then, acquiring a sea surface microwave remote sensing image, and performing coordinate transformation, such as preprocessing of a shore-based sea observation radar image, a shipborne navigation radar image, noise suppression and the like; thirdly, inverting a wind wave period from the preprocessed image through a spectrum analysis technology; and finally, substituting the wind wave period obtained by inversion into a pre-established model, and calculating to obtain the significant wave height. According to the method, the wind wave period is introduced to serve as a key intermediate variable, the image features and the sea wave physical parameters are closely associated, the defect that an existing direct inversion method is insufficient in precision and stability is overcome, and an effective wave height obtaining means which is clear in physical significance, high in inversion precision and easy to popularize in a business mode is provided.

The invention relates to the technical field of man-machine interaction, in particular to an intelligent screen turning-on and turning-off control method and system based on a microwave radar, which completely eradicates the risk of privacy disclosure and realizes high privacy protection through an identification mode of not collecting optical image information and only analyzing motion and vital signs through electromagnetic waves, and is not influenced by the environment, so that the intelligent screen turning-on and turning-off control method and system based on the microwave radar can be applied to intelligent screen turning-on and turning-off control. The system can stably work in severe environments such as all black and strong light, has super-strong environmental adaptability, and enables the judgment of screen opening to better conform to the real intention of a user by sensing the accurate postures of person existence, no person existence, approaching, departing, right facing or side facing, reduces false triggering to the greatest extent, improves the accuracy of system judgment, and improves the user experience. The instrument does not need to be kept in a bright state all the time in the operation process, when no person is in front of the instrument, the screen is automatically turned off at proper time, and when an operator comes to the front face of the instrument and prepares to operate the screen, screen display is automatically turned on, energy is saved, environment is protected, and the instrument is convenient to operate.

The invention relates to the technical field of air conditioner control, in particular to a dynamic operation method, device and equipment of a multi-split air conditioner and a storage medium, according to the method, area density information is determined through real-time echo information fed back by a millimeter-wave radar module, and compared with a traditional infrared or camera scheme, millimeter-wave radar is higher in detection sensitivity to a static human body, and the detection accuracy is improved. The device is not interfered by light and oil smoke, and the static detection rate is effectively improved; air area information is further confirmed based on area density information, personnel distribution can be quantified, invalid air supply in an unmanned area is reduced by dynamically adjusting an air swinging angle, fan energy consumption is reduced, and meanwhile the situation that the indoor temperature difference is too large is avoided; a work adjusting instruction is further generated based on the area density information and the real-time operation mode, the work adjusting instruction conducts linkage adjustment on the rotating speed of a compressor, the opening degree of an electronic expansion valve, the superheat degree of an evaporator, the fan gear and other parameters, multi-parameter cooperative regulation and control are achieved, system unbalance caused by single-parameter adjustment is avoided, and the system reliability is improved. And the fault rate in a high-load scene is effectively reduced.

The invention discloses a satellite-borne microwave radar tracking wave beam on-orbit correction method, which comprises the following steps: an on-orbit calibration step: acquiring high-precision relative angle information through GNSS differential positioning by using two cooperative satellites equipped with GNSS receivers, and making a difference between the high-precision relative angle information and a tracking measurement angle of a satellite-borne microwave radar to a target satellite, obtaining a pointing deviation of a radar tracking beam; and an on-orbit correction step: injecting the pointing deviation into the spaceborne microwave radar in a ground injection mode, and adjusting a radar tracking algorithm to compensate the pointing deviation so as to realize on-orbit correction of tracking beam pointing. According to the invention, the problem of deterioration of radar product tracking precision caused by inconsistency of the on-orbit state and the ground state can be effectively solved, and the anti-risk capability of the load system function is improved.

This utility model discloses a smart barn door for kitchens, relating to the field of barn door technology. It includes a mounting plate and glass. A fixed shell is provided on one side of the mounting plate, and a moving mechanism for lateral movement is provided on the fixed shell. A microwave radar sensor is provided on one side of the fixed shell, and a control box is provided on one side of the mounting plate. A door frame is provided at the bottom of the moving mechanism, and a connecting rod is provided inside the door frame. An installation mechanism for convenient glass installation and fixing is provided on the door frame and the connecting rod, and the glass is mounted on the installation mechanism. The number of glass panes is set to four. The moving mechanism includes a lead screw, which is rotatably installed inside the fixed shell. Two sliders are threaded onto the outer wall of the lead screw, and the two sliders are slidably installed on the inner wall of the fixed shell. This utility model achieves sensor-controlled drive of the door frame, improving convenience and facilitating glass replacement. It is simple to operate and highly practical.

This utility model discloses an integrated energy-saving control device for air conditioning air supply, comprising: a microwave radar induction switch with a built-in delay control module for real-time detection of human activity signals within a set area, and triggering a delayed disconnection command after the signal disappears; an intermediate relay connected to the microwave radar induction switch by wires, changing the circuit on / off signal according to the energized and de-energized state of the microwave radar induction switch; and an electric air valve controlled by the on / off signal of the intermediate relay to open or close the air supply channel of the air conditioner. This utility model, by incorporating a directionally adjustable microwave radar induction switch, can monitor the presence of human activity within a set area in real time, and by using an intermediate relay to control the on / off state of the electric air valve based on the feedback signal from the microwave radar induction switch, thereby controlling the opening and closing of the central air conditioning vents in the room. This addresses the problem of energy waste caused by the continuous air supply from the vents of existing central air conditioning systems when no one is present.

The utility model discloses a fire-fighting passage real-time linkage early warning system, its smoke inductor, fire source detector, microwave radar inductor and door magnetic inductor all are equipped with signal transmission device and are connected with main control device communication, main control device and background management end communication connection, camera monitoring identification device and background management end communication connection, microwave radar inductor senses and identifies to have the object parking / accumulation of longer time in safety passage to send alarm signal to main control device, main control device receives alarm signal and sends alarm signal to background management end after. According to the actual situation of fire-fighting passage, the fire-fighting inductive identifier is laid, the object in the passage is early warning identified to the smoke, the fire source, the temperature and notify the management personnel and handle in time, ensure the smooth of safety passage.

According to the water dispenser energy-saving circuit based on the microwave radar, through the arrangement of the microwave radar, when the water dispenser completes work and the microwave radar does not sense a moving object within the range, a system can automatically enter a dormant state after a certain time, all electric parts of the water dispenser operate in a lowest power consumption state, and the water dispenser can work normally. When a person approaches the water dispenser or uses the water dispenser, the microwave radar immediately wakes the main control unit to work. Therefore, the automatic energy-saving use effect of the water dispenser is achieved, and the service life of electrical components is prolonged. Besides, the electromagnetic valve is arranged on the water outlet pipeline, and the control end of the main control unit is electrically connected with the controlled ends of the electromagnetic valve and the heating piece, so that when the main control unit receives the information that the human body approaches the water dispenser, the electromagnetic valve and the heating piece can be closed, and an approaching user is prevented from being scalded. Therefore, the utility model provides a hardware architecture which is favorable for reducing the power consumption of the water dispenser equipment and improving the safety of the water dispenser.

The invention discloses a microwave radar-based water and rain condition integrated sensing optimization method and system, and relates to the technical field of hydrology and meteorology. The method comprises the following steps: monitoring low signal-to-noise ratio radar echoes by adopting a time domain accumulation algorithm, and outputting water and rain condition time sequence data; directionally correcting the time sequence data based on the ultrasonic data, and outputting optimized data; linking the multi-space association stations to call the water and rain condition association data; the optimization data and the associated data are corrected according to the topographic topology parameters, and a multi-station joint defense flow prediction value is obtained; and carrying out disaster risk prediction and outputting an early warning instruction. The technical problems that in the low signal-to-noise ratio, complex terrain and strong interference environment, the water and rain condition monitoring precision is low, the data consistency is poor, and multi-station cooperative flow prediction is difficult to achieve are solved, the quality and stability of water and rain condition data in the low signal-to-noise ratio environment are improved through multi-source sensing data fusion and multi-station joint defense cooperative correction, and the flow prediction efficiency is improved. The technical effect of high-precision distributed prediction of the cross-section flow of the drainage basin is achieved.

The utility model discloses a kind of underwater topographic model construction devices for rivers and lakes, belong to river and lake topographic survey technical field, its technical scheme main points include floating body structure, the top of the floating body structure is bolted with support structure, the inner wall of the support structure is movably connected with positioner structure, the bottom of the holding handle is bolted with the top of positioner bar, the bottom of the positioner bar is bolted with the top of mounting frame, the inside of the mounting frame is bolted with microwave radar detector body top, the inside of the mounting frame is bolted with the outside of protective frame, in the existing rivers and lakes underwater topographic model construction process, generally simple rope detection, detection depth is inconvenient to adjust, and complex operation is needed to adjust detector height, difficult to adapt to different water depth area detection demand, and detection operation is difficult to stabilize, if lack reliable buoyancy support, easily be impacted by water flow and tilt, resulting in detection position deviation, affect data precision.

This invention relates to an integrated microwave-laser radar composite detection system, belonging to the field of microwave-laser composite detection technology, and solves the problems of insufficient detection accuracy, poor system integration, and weak adaptability in existing technologies. The system includes: a microwave radar module, which receives a first and second laser beam emitted from a beam splitter, modulates the first laser beam using a radio frequency signal to generate a microwave radar transmission signal, and transmits it to the target; a single-photon laser radar module, which receives a third laser beam emitted from the beam splitter, generates a single-photon laser pulse based on the third laser beam, and transmits it; a coherent laser radar module, which receives a fourth and fifth laser beam after beam splitting, generates a laser transmission signal based on the fourth laser beam, and transmits it; and a control and acquisition processing module, used to receive the intermediate frequency echo signal from the microwave radar module, the electrical signal from the single-photon laser radar module, and the coherent intermediate frequency signal from the coherent laser radar module, process them to generate characteristic parameters of the target.

The invention discloses an intelligent detection system and method for small animal invasion of a transformer substation, and relates to the technical field of power system safety protection. The system comprises a multi-sensor detection module which at least comprises a motion detection sensor, a microwave radar, an infrared temperature sensor and an environment temperature and humidity detector; and the main controller is connected with the multi-sensor detection module and is used for receiving the multi-source sensing detection data output by the multi-sensor detection module and calculating the total confidence coefficient based on each sensing detection data in the multi-source sensing detection data and the respective weight so as to judge whether intrusion occurs or not based on the total confidence coefficient. According to the scheme, the false alarm rate is greatly reduced, the accuracy is remarkably improved, the usability is greatly improved, the traceability is enhanced, and the seasonal adaptability is good.

The present disclosure provides an integrated microwave radar sensing lighting control circuit and a lighting lamp, wherein the integrated microwave radar sensing lighting control circuit comprises an integrated metal substrate and a circuit device. The circuit device is composed of a wireless radio frequency module, a microwave radar module and a dimming driving module, which are arranged adjacent to each other on the same end surface of the substrate to form a highly integrated integrated structure. The microwave radar module is responsible for transmitting and receiving environmental microwave signals. The wireless radio frequency module processes radar signals in real time through the built-in radio frequency chip and triggers the dimming algorithm, and outputs the PWM control signal to the dimming driving module. The dimming driving module dynamically adjusts the light source load current based on the PWM signal through the dimming chip, realizing intelligent regulation and control of LED brightness. This design realizes the deep integration of signal processing, radar detection and light source driving through high integration, thereby significantly reducing signal transmission loss and electromagnetic interference, optimizing the heat dissipation path, and further improving the stability of the circuit.

The invention belongs to the technical field of power equipment safety monitoring and intelligent sensing, and particularly relates to an overhead line bird repelling device and method based on multi-mode sensing dynamic fusion and edge calculation. The system comprises a sensing layer which is used for sensing the activity of birds around the overhead line and the ambient brightness in real time; the edge calculation layer is used for processing the data of the sensing layer by adopting a prediction model, outputting bird behavior prediction, and outputting a corresponding bird repelling strategy by adopting a self-adaptive bird repelling decision model according to the bird behavior prediction; the execution layer is used for executing bird repelling operation according to the bird repelling strategy and the ambient brightness; the power supply layer is used for supplying power. According to the bird repelling system, through combination of the microwave radar unit, the camera unit and the photosensitive sensor, multi-mode sensing dynamic fusion is formed to capture bird activities, a prediction model and a self-adaptive decision model are locally operated in combination with an edge calculation layer, bird behaviors are predicted in advance, response delay is compressed, and the bird repelling effect is improved. The delay problem caused by a traditional scheme depending on the cloud is solved.

The utility model discloses a novel music box, including music box body, the both sides of music box body are equipped with rotating through -hole, rotating through -hole is equipped with the photo page -turning structure rotation, the inside installation of music box body has the lamp effect structure, still install the music box sound comb in music box body, the inside of music box body is close to the installation of the elastic sheet of port department, the utility model discloses a novel music box, this novel music box breaks the traditional structure, through pasting the printed photo on the acrylic plate of photo page -turning structure, these photos can be rotated in turn and viewed through the handle, during viewing, when the photo page -turning structure rotates or the external movement is inducted through the microwave radar induction switch module, the atmosphere lamp strip will be lighted, thereby irradiating on the photo, to set off the atmosphere feeling at this time, like this more have the interest and the value of memento, and the related photo of memento is convenient for later -stage viewing and viewing.

The utility model discloses an internet of things edge controller with short-distance communication, which comprises an MCU module, the MCU module is respectively connected with one or more of a millimeter wave radar detection module, a microwave radar detection module, a visibility detection module and a weather detection module through an RS485 interface, and the MCU module is connected with a video monitoring module or a thunder vision all-in-one machine through a network port. The MCU module is also connected with the charging and discharging manager through a network port, the MCU module is connected with the USB interface, and the MCU module is connected with other edge controllers through one or more of the LORA transmission module, the GPS module and the 4G module. According to the utility model, radar signal reception and transmission, visibility signal reception and transmission, and meteorological data reception and transmission can be carried out; the access functions of video monitoring and radar video monitoring can be realized; cooperative work can be realized, omnibearing communication and positioning capability can be provided, and diversified demands of modern traffic scenes can be satisfied.

A kind of 10KV power distribution equipment multi-modal intelligent bird repelling device, it relates to bird repelling technical field, including shell, main control unit, solar power supply module, sound wave and light source bird repelling component, 4G communication unit and magnetic attraction installation component, three 120 ° circumferential interval ultrasonic loudspeaker and four color integrated lamp bead realize 360 ° dead angle coverage, by MQTT protocol and OneNET Internet of Things platform two-way communication.Sound wave adopts sweep frequency, frequency hopping, random pulse three dynamic modes, and 10Hz light source linkage operation, no noise pollution and effectively avoid bird adaptation.Can be added bird recognition module executes differentiation bird repelling, combined with environmental perception adaptive adjustment parameter, microwave radar realizes all-weather detection.The present application magnetic attraction installation does not need to punch, solar power self-powered, support cloud batch management and intelligent operation and maintenance, significantly improve bird repelling effect and reduce operation and maintenance cost.

The present invention describes a detection and image reconstruction system based on microwave radar technology, designed mainly to detect breast abnormalities. The system comprises a set of emitting and receiving transducers. The signals reflected by the tissue are processed using algorithms such as delay and sum (DAS) and delay, multiply and sum (DMS), applied iteratively, which significantly improves image resolution, reconstruction and quality.

The cloud recognition method and computer program product of the microwave laser composite radar are based on transfer learning and R-FCN network, remove the ground clutter, and remove the noise caused by the ground clutter of the microwave radar; a deep learning model is constructed by using transfer learning and R-FCN algorithm, microwave radar and laser radar echo images are input, the attention mechanism is used in the model to realize adaptive feature extraction, a multi-scale feature pyramid is introduced on the basis of the RPN network, and the recognition and detection capability for different scale cloud areas is enhanced. The single result of the microwave radar and the laser radar cloud recognition is realized by using cloud boundary self-checking, cloud feature marking, initial matching and joint inversion of the cloud boundary, and the composite recognition cloud area is obtained. The cloud recognition function is possessed under complex atmospheric conditions such as multi-layer clouds and under the interference of equipment noise, the inversion result is accurate, the ground clutter and the daytime background noise are not sensitive, and the recognition advantages of the laser radar for the thin roll cloud area and the cloud bottom and the recognition advantage of the microwave radar for the cloud top are fully integrated.

The invention discloses a self-adaptive denoising method and system for on-line radar measuring point displacement, and relates to the technical field of microwave radar displacement measurement, and the method comprises the steps: obtaining a difference frequency signal according to an on-line displacement measuring radar and a measurement target; according to the difference frequency signal, determining a slow beat difference frequency signal of the measurement target through Fourier transform; performing phase vector analysis on the slow beat difference frequency signal by adopting a circle fitting algorithm to obtain a fitted circle center and a phase amplitude estimated value; calculating the signal-to-noise ratio of the slow beat difference frequency signal according to the slow beat difference frequency signal, the fitting circle center and the phase amplitude estimation value; according to the signal-to-noise ratio, adaptive denoising processing is carried out on the slow beat difference frequency signal through an extended Kalman filtering algorithm, and a filtering phase signal is obtained; and converting the filtered phase signal into a displacement signal of a measurement target based on a phase interference method. According to the invention, the problem of inconsistent signal-to-noise ratios of measured target displacement at different distances is solved, and adaptive denoising of measured target displacement signals at different distances is realized.

The utility model discloses an automatic opening and closing control system for a garbage discharge door. The automatic opening and closing control system comprises a control unit, a switch driving mechanism of the discharging door (4) is connected with a control unit of the control system through a signal circuit, and the opening and closing of the discharging door (4) are controlled by the control unit; according to the control system, a microwave radar (1) is arranged above a discharging door (4), and the microwave radar (1) is in signal connection with a control unit; the microwave radar (1) receives signals reflected by vehicles entering and exiting the discharging door (4). By adopting the technical scheme, a ground induction coil is changed into microwave radar monitoring, and an original point-to-point photoelectric switch parallel to a discharge door is changed into the diagonal strip-shaped photoelectric grating, so that the detection surface and the detection length are increased, and meanwhile, the detection accuracy is greatly improved; the system does not have requirements on the type, the length and the chassis height of the discharging car any more, and the application range and the control reliability of the control system are greatly improved.

The utility model discloses a tunnel vehicle detection device based on millimeter-wave radar, which comprises a fixing frame and a camera, the fixing frame is rotatably mounted at the bottom of the camera, a connecting plate is fixedly mounted below the camera, and the millimeter-wave radar is fixedly mounted on the connecting plate. First connecting blocks are fixedly installed on the two sides of the surface of the camera, a fixing plate is slidably installed between the first connecting blocks, a scraper is fixedly installed on the fixing plate, a connecting frame is fixedly installed on the outer side of the millimeter microwave radar, a hydraulic rod is installed between the fixing plate and the connecting frame, and the hydraulic rod is controlled to stretch out and draw back. According to the visual sensor surface cleaning device, the fixing plate is driven to slide up and down between the two first connecting blocks, so that the scraping plate cleans the surface, the surface of the visual sensor is cleaned through the structure, shielding objects can be prevented from being attached to the surface of the visual sensor, the tedious process of manual cleaning is replaced, and meanwhile the detection precision is improved.