Highway height limit detection method based on laser radar

Abstract

The invention relates to the technical field of expressway detection, and relates to a laser radar-based expressway height limit detection method, which comprises the following steps of: installing a height limit detection device at a proper position of an expressway gate; the radar is started, the measuring mode of the radar is configured, and a laser beam emitted by the radar is divided into two laser beams through the blocking piece, and the two laser beams correspond to two adjacent lanes respectively; the radar receives the laser beams reflected back from the vehicles on the two lanes and calculates the heights of the vehicles according to the light speed and the pulse round-trip time; the collected height data are transmitted to a data processing unit, and the data processing unit compares the vehicle height data measured by each lane with a preset height limit standard. The blocking piece is arranged in front of the laser radar, one laser beam is divided into two beams, monitoring of lanes on the two sides is achieved, meanwhile, the independent laser receivers are correspondingly arranged on the two sides of the laser radar, one device can monitor the height limit of the two lanes at the same time, and the economic benefits of the device are improved.

Description

Technical Field

[0001] The invention relates to the technical field of highway detection, and in particular to a method for detecting height limits on highways based on laser radar. Background Art

[0002] As an important part of modern transportation, highways undertake a large number of transportation tasks. With the increase of various types of vehicles, it is particularly important to ensure the safety and efficiency of highway use. Among them, the height limit of vehicles is a key safety consideration, because over-height vehicles may cause damage to highway infrastructure or cause accidents when passing through bridges and tunnels.

[0003] There are two types of existing detection methods: 1. Traditional manual inspection or simple mechanical height limit poles; 2. Laser height radar detection. Both methods have defects: manual inspection is slow, judgment may be inaccurate, and cannot cope with the frequent flow of vehicles on highways. Mechanical height limit poles cannot be flexibly adjusted and cannot accurately measure vehicle height. Laser height radar detection usually uses one detection radar per lane, which is costly and not economical. Summary of the invention

[0004] In order to solve the problems of the prior art, the present invention provides a method for detecting height limits on expressways based on laser radar.

[0005] The purpose of the present invention can be achieved by the following technical solution: A method for detecting height limit of a highway based on laser radar, comprising the following steps:

[0006] S1.1: Installation: The height limit detection device is installed at an appropriate position of the highway gate. The height limit detection device includes a first shell, a radar and a second shell. The front section of the second shell is provided with a blocking plate;

[0007] S1.2: Positioning: Adjust the position of the radar so that its center projection is in a straight line with the center projection of the barrier plate at the front section of the upper end of the second hull, and the detection range of the radar can cover two adjacent lanes;

[0008] S2.1: Preparation for two-lane measurement: Start the radar and configure its measurement mode so that the laser beam it emits is separated into two laser beams by the barrier plate, corresponding to two adjacent lanes respectively, so as to achieve real-time measurement of the height of passing vehicles in the two lanes;

[0009] S2.2: Laser beam configuration: The two laser beams emitted by the radar are adjusted to align with the center lines of adjacent lanes to ensure measurement accuracy and coverage;

[0010] S3: Data collection: The radar receives laser beams reflected from vehicles in both lanes and calculates the height of the vehicles based on the speed of light and the pulse round-trip time;

[0011] S4: Data processing: The collected height data is transmitted to a data processing unit, which is configured with an algorithm capable of distinguishing and processing vehicle height data from two lanes;

[0012] S5: height limit comparison: the data processing unit compares the vehicle height data measured in each lane with the preset height limit standard;

[0013] S6: Alarm and traffic control: If the height of a vehicle measured in any lane exceeds the preset height limit, the data processing unit will trigger the corresponding alarm system and take traffic control measures for the lane where the over-limit vehicle is located through the traffic control unit;

[0014] S7: User interface feedback: Provides a user interface that displays the vehicle height measurement results and any over-limit warnings for each lane so that the operator can monitor in real time and take necessary actions;

[0015] S8: System calibration and maintenance: Regularly calibrate the radar to ensure that the measurement accuracy is not affected by environmental changes to maintain the normal operation of the equipment.

[0016] As a further improvement, in step S1.1, the height limit detection device includes a first shell, a radar and a second shell, a storage cavity is provided inside the first shell, and the radar is fixedly disposed in the storage cavity to ensure the stability and measurement accuracy of the radar.

[0017] As a further improvement, in the step S1.1, an assembly slot is provided at the upper end of the first shell, an assembly block is provided at the lower end of the second shell, and the second shell is slidably arranged in the assembly slot through the assembly block.

[0018] As a further improvement, in step S1.1, a waterproof brush is provided at the front section of the storage cavity to prevent moisture and other foreign matter from entering the storage cavity and protect the normal operation of the radar.

[0019] As a further improvement, in step S1.2, the radar has an automatic calibration function and can automatically adjust measurement parameters according to environmental changes to ensure measurement accuracy.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the height limit detection method of the present invention not only improves the accuracy and real-time performance of monitoring, but also monitors the height limits of two lanes simultaneously through one device, thereby reducing the number of devices and costs and improving economic benefits. In addition, the setting of an independent laser receiver further improves the reliability and stability of the measurement, ensuring the safety management of the highway. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a partial exploded view of the present invention;

[0023] Figure 3 is a schematic structural diagram of the second shell of the present invention;

[0024] In the figure, 1, first shell; 11, storage cavity; 111, waterproof brush; 12, assembly slide groove; 121, second locking hole; 2, radar; 3, second shell; 31, blocking plate; 32, assembly block. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Below is a combination of the embodiments and the attached Figures 1 to 3 , the technical solution of the present invention is further elaborated.

[0028] Example 1

[0029] A method for detecting height restrictions on highways based on laser radar comprises the following steps:

[0030] S1.1: Installation: The height limit detection device is installed at an appropriate position of the highway gate. The height limit detection device includes a first shell 1, a radar 2, and a second shell 3. The front section of the second shell 3 is provided with a blocking piece 31;

[0031] S1.2: Positioning: Adjust the position of the radar 2 so that its central projection is in a straight line with the central projection of the blocking plate 31 at the front section of the upper end of the second housing 3, and the detection range of the radar 2 can cover two adjacent lanes;

[0032] S2.1: Preparation for dual-lane measurement: Start the radar 2 and configure its measurement mode so that the laser beam it emits is separated into two laser beams by the blocking plate 31, corresponding to two adjacent lanes respectively, so as to achieve real-time measurement of the height of passing vehicles in the two lanes;

[0033] S2.2: Laser beam configuration: The two laser beams emitted by radar 2 are adjusted to align with the center lines of adjacent lanes to ensure measurement accuracy and coverage;

[0034] S3: Data collection: Radar 2 receives laser beams reflected from vehicles in two lanes and calculates the height of the vehicle based on the speed of light and the pulse round-trip time;

[0035] S4: Data processing: The collected height data is transmitted to a data processing unit, which is configured with an algorithm capable of distinguishing and processing vehicle height data from two lanes;

[0036] S5: height limit comparison: the data processing unit compares the vehicle height data measured in each lane with the preset height limit standard;

[0037] S6: Alarm and traffic control: If the height of a vehicle measured in any lane exceeds the preset height limit, the data processing unit will trigger the corresponding alarm system and take traffic control measures for the lane where the over-limit vehicle is located through the traffic control unit;

[0038] S7: User interface feedback: Provides a user interface that displays the vehicle height measurement results and any over-limit warnings for each lane so that the operator can monitor in real time and take necessary actions;

[0039] S8: System calibration and maintenance: Regularly calibrate the radar 2 to ensure that the measurement accuracy is not affected by environmental changes, so as to maintain the normal operation of the equipment.

[0040] like Figures 1 to 3 As shown, the specific operation steps of the present invention are as follows:

[0041] Step 1: Equipment installation and positioning

[0042] A height limit detection device is installed at an appropriate position of the highway gate. The device includes a first housing 1, a radar 2 and a second housing 3. A blocking plate 31 is provided at the front section of the second housing 3 to separate the laser beam emitted by the radar 2 into two beams corresponding to the lanes on both sides.

[0043] The position of the radar 2 is adjusted to ensure that its central projection is in a straight line with the central projection of the blocking piece 31 at the front section of the upper end of the second housing 3, so as to achieve accurate monitoring of the lanes on both sides.

[0044] Step 2: Laser beam and receiver configuration

[0045] The radar 2 is started and configured in its measurement mode so that the laser beam it emits is separated into two laser beams by the barrier plate 31, corresponding to the adjacent lanes on both sides respectively.

[0046] Independent laser receivers are correspondingly arranged on both sides of the radar 2, and these receivers respectively receive the laser beams reflected from the vehicles in the lanes on both sides.

[0047] Step 3: Data collection and processing

[0048] The laser receiver receives the reflected laser beam and calculates the vehicle's altitude based on the speed of light and the pulse round-trip time.

[0049] The collected height data is transmitted to a data processing unit, which is equipped with an algorithm capable of distinguishing and processing vehicle height data from both lanes.

[0050] Step 4: Height limit comparison and alarm triggering

[0051] The data processing unit compares the vehicle height data measured in each lane with the preset height limit standard.

[0052] If the measured vehicle height in any lane exceeds the preset height limit, the data processing unit will trigger the corresponding alarm system.

[0053] Step 5: Traffic Control and User Interface Feedback

[0054] Traffic control measures are taken on the lane where the overloaded vehicle is located through the traffic control unit, such as signal light control, road closure, etc.

[0055] Provides a user interface that displays vehicle height measurements for each lane and any over-limit warnings so operators can monitor in real time and take necessary action.

[0056] Step 6: System calibration and maintenance

[0057] The radar 2 and the laser receivers on both sides are calibrated regularly to ensure that the measurement accuracy is not affected by environmental changes.

[0058] Check and maintain the barrier sheet 31 and the laser receiver to ensure the normal operation and long-term stability of the equipment.

[0059] By implementing the above steps, the present invention has the following beneficial effects:

[0060] Multi-lane monitoring capability: Compared with the existing height-measuring radar that can only measure a single lane, the present invention achieves the separation of a laser beam by setting a barrier in front of the laser radar, and can monitor lanes on both sides at the same time. This design significantly improves monitoring efficiency and allows management departments to monitor more traffic flows at the same time.

[0061] Cost-effectiveness: Traditional height-measuring radar systems require independent radar equipment to be installed on each lane, which not only increases hardware costs, but also increases the complexity of installation and maintenance. The present invention monitors two lanes simultaneously with one device, reducing the number of required devices, thereby reducing overall costs and improving economic benefits.

[0062] Improve data processing efficiency: In the present invention, independent laser receivers are provided on both sides of the laser radar, which can simultaneously receive reflected laser signals from lanes on both sides. This configuration allows the data processing unit to process data from two lanes at the same time, improving the speed and efficiency of data processing.

[0063] Enhanced safety: By monitoring two lanes simultaneously, the present invention can more quickly identify and respond to overloaded vehicles, issue alarms in a timely manner and take traffic control measures, thereby effectively preventing traffic accidents caused by overloaded vehicles and improving the safety of highways.

[0064] Easy maintenance and calibration: The system design of the present invention allows for regular calibration and maintenance of the laser radar and its receiver, ensuring that the measurement accuracy is not affected by environmental changes. This design simplifies the maintenance process and improves the reliability and stability of the equipment.

[0065] User-friendly interface: The user interface provided can clearly display the vehicle height measurement results and over-limit warnings for each lane, allowing operators to monitor in real time and take necessary actions quickly, improving the convenience and response speed of operation.

[0066] Environmental adaptability: The lidar and receiver design of the present invention takes into account the stability and accuracy under different environmental conditions, and can adapt to various weather and lighting conditions, ensuring that reliable measurement results can be provided in different environments.

[0067] As a further preferred embodiment, in the step S1.1, the height limit detection device includes a first shell 1, a radar 2 and a second shell 3, a storage cavity 11 is provided inside the first shell 1, and the radar 2 is fixedly disposed in the storage cavity 11 to ensure the stability and measurement accuracy of the radar 2.

[0068] As a further preferred embodiment, in the step S1.1, an assembly groove 12 is provided at the upper end of the first shell 1, and an assembly block 32 is provided at the lower end of the second shell 3, and the second shell 3 is slidably arranged in the assembly groove 12 through the assembly block 32.

[0069] Specifically, the second shell 3 of the present invention is slidably arranged in the assembly slot through the assembly block 32, and the installation structure is simple. The second shell 3 can be used to protect the equipment. At the same time, the second shell 3 is easy to install, which is convenient for the later maintenance and repair of the equipment.

[0070] As a further preferred embodiment, in the step S1.1, a waterproof brush 111 is provided at the front section of the storage cavity 11 to prevent moisture and other foreign matter from entering the storage cavity 11 and protect the normal operation of the radar 2. The waterproof brush 111 is used to protect the equipment and prevent excessive rainwater from entering the storage cavity 11 and affecting the service life and detection accuracy of the equipment.

[0071] As a further preferred embodiment, in step S1.2, the radar 2 has an automatic calibration function, and can automatically adjust measurement parameters according to environmental changes to ensure measurement accuracy.

[0072] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A method for detecting height restrictions on highways based on laser radar, characterized in that: The following steps are involved: S1.1: Installation: The height limit detection device is installed at an appropriate position of a highway gate, wherein the height limit detection device comprises a first housing (1), a radar (2) and a second housing (3), wherein a blocking plate (31) is provided at the front section of the second housing (3); S1.2: Positioning: adjusting the position of the radar (2) so that its central projection is in a straight line with the central projection of the blocking plate (31) at the front section of the upper end of the second housing (3), and the detection range of the radar (2) can cover two adjacent lanes; S2.1: Preparation for dual-lane measurement: Start the radar (2) and configure its measurement mode so that the laser beam emitted by it is separated into two laser beams by the blocking plate (31), corresponding to two adjacent lanes respectively, so as to achieve real-time measurement of the height of passing vehicles in the two lanes; S2.2: Laser beam configuration: The two laser beams emitted by the radar (2) are adjusted to align with the center lines of the adjacent lanes to ensure measurement accuracy and coverage; S3: Data collection: The radar (2) receives the laser beam reflected from the vehicles in the two lanes and calculates the height of the vehicle based on the speed of light and the pulse round-trip time; S4: Data processing: The collected height data is transmitted to a data processing unit, which is configured with an algorithm capable of distinguishing and processing vehicle height data from two lanes; S5: height limit comparison: the data processing unit compares the vehicle height data measured in each lane with the preset height limit standard; S6: Alarm and traffic control: If the height of a vehicle measured in any lane exceeds the preset height limit, the data processing unit will trigger the corresponding alarm system and take traffic control measures for the lane where the over-limit vehicle is located through the traffic control unit; S7: User interface feedback: Provides a user interface that displays the vehicle height measurement results and any over-limit warnings for each lane so that the operator can monitor in real time and take necessary actions; S8: System calibration and maintenance: Regularly calibrate the radar (2) to ensure that the measurement accuracy is not affected by environmental changes, so as to maintain the normal operation of the equipment.

2. The method for detecting height restrictions on highways based on laser radar according to claim 1, characterized in that: In step S1.1, the height limit detection device comprises a first shell (1), a radar (2) and a second shell (3), wherein a storage cavity (11) is arranged inside the first shell (1), and the radar (2) is fixedly arranged in the storage cavity (11) to ensure the stability and measurement accuracy of the radar (2).

3. A method for detecting height restrictions on highways based on laser radar according to claim 1 or 2, characterized in that: In the step S1.1, an assembly slot (12) is provided at the upper end of the first shell (1), and an assembly block (32) is provided at the lower end of the second shell (3), and the second shell (3) is slidably arranged in the assembly slot (12) via the assembly block (32).

4. The method for detecting height restrictions on highways based on laser radar according to claim 2, characterized in that: In step S1.1, a waterproof brush (111) is provided at the front section of the storage cavity (11) to prevent moisture and other foreign matter from entering the storage cavity (11) and to protect the normal operation of the radar (2).

5. The method for detecting height restrictions on highways based on laser radar according to claim 1, characterized in that: In step S1.2, the radar (2) has an automatic calibration function and can automatically adjust measurement parameters according to environmental changes to ensure measurement accuracy.

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