Hull target early warning system based on radar

Abstract

The utility model provides a ship body target early warning system based on radar, which relates to the ship detection field, and comprises a laser radar body, the bottom of the laser radar body is provided with a snow removing unit, the snow removing unit comprises a box body, the top of the box body is fixedly connected with the bottom of the laser radar body through a support rod, and the top of the box body is fixedly connected with the bottom of the laser radar body. The bottom of an inner cavity of the box body is fixedly connected with a motor, an output shaft of the motor is in transmission connection with fan blades, a heating coil is arranged in the inner cavity of the box body, and the periphery of the top of the box body is communicated with air outlet nozzles; the heating coil works to generate heat, the motor is matched with the fan blades, hot air in the inner cavity of the box body is discharged outwards through the air outlet nozzle, accumulated snow covering the laser radar body can be blown and melted while the hot air is discharged outwards, and the situation that the surveying and mapping precision of the laser radar body is reduced due to accumulated snow covering is prevented.

Description

Technical Field

[0001] The utility model belongs to the field of ship detection, in particular to a ship hull target early warning system based on radar. Background Art

[0002] When a ship is sailing, the ocean environment is highly variable and unknown obstacles may appear at any time. Therefore, the use of an intelligent navigation system is very important. The application performance of the intelligent navigation system has a direct impact on the safety of the ship's navigation.

[0003] LiDAR is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of a target. Its working principle is to transmit a detection signal (laser beam) to the target, and then compare the received signal reflected from the target (target echo) with the transmitted signal. After appropriate processing, relevant information about the target can be obtained, such as target distance, direction, altitude, speed, attitude, and even shape parameters, so as to detect, track and identify the target. Snow may cause scattering in the LiDAR system, resulting in part of the laser beam being scattered or reflected. Therefore, heavy snow cover will cause the LiDAR signal strength to weaken and the ranging accuracy to be inaccurate.

[0004] In summary, the utility model therefore provides a radar-based hull target early warning system to solve the above-mentioned problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A radar-based hull target early warning system comprises a laser radar body, a snow removal unit is arranged at the bottom of the laser radar body, the snow removal unit comprises a box body, the top of the box body is fixedly connected to the bottom of the laser radar body via a support rod, a motor is fixedly connected to the bottom of the inner cavity of the box body, the output shaft of the motor is drivingly connected to a fan blade, a heating coil is arranged in the inner cavity of the box body, and air outlets are connected on all four sides of the top of the box body.

[0007] Furthermore, in the utility model, an air inlet is provided at the bottom of the box body, and a dustproof net is fixedly connected to the inner cavity of the air inlet.

[0008] Furthermore, in the utility model, both sides of the heating coil are fixedly connected with connecting rods, and both ends of the connecting rods are respectively fixedly connected to the inner cavity of the box.

[0009] Furthermore, in the utility model, the heating coil is located directly above the air inlet, and the motor and the fan blades are located at the center of the heating coil.

[0010] Furthermore, in the utility model, the laser radar body includes an optical transmitting end, an optical detector, a main amplifier and a preamplifier and a main processor.

[0011] Beneficial effects: The utility model has the following beneficial effects:

[0012] The utility model generates heat through the operation of the heating coil, and the motor cooperates with the fan blades to discharge the hot air in the inner cavity of the box outwards through the air outlet nozzle. When the hot air is discharged outwards, it can melt the snow covering the laser radar body, thereby preventing the snow from covering the body and causing a decrease in the surveying and mapping accuracy of the laser radar body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the box body of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the box body of the utility model when viewed from above;

[0016] Figure 4 This is a flow chart of laser radar ranging in the utility model.

[0017] In the figure:

[0018] 1. LiDAR body; 2. Snow removal unit; 201. Box; 202. Heating coil; 203. Motor; 204. Fan blades; 205. Connecting rod; 206. Air inlet; 207. Air outlet. DETAILED DESCRIPTION

[0019] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.

[0020] Example 1

[0021] like Figure 1-4As shown, it is the first embodiment of the utility model, which provides a radar-based hull target warning system, including a laser radar body 1, a snow removal unit 2 is arranged at the bottom of the laser radar body 1, and the snow removal unit 2 includes a box 201, the top of the box 201 is fixedly connected to the bottom of the laser radar body 1 through a support rod, a motor 203 is fixedly connected to the bottom of the inner cavity of the box 201, and the output shaft of the motor 203 is transmission-connected to the fan blade 204, the inner cavity of the box 201 is provided with a heating coil 202, and the top of the box 201 is connected to the air outlet 207 on all sides.

[0022] like Figure 2 As shown, the heating coil 202 generates heat, and the motor 203 cooperates with the fan blades 204 to discharge the hot air in the inner cavity of the box 201 through the air outlet 207. While the hot air is discharged outward, it can melt the snow covering the laser radar body 1 to prevent the snow from covering and causing the mapping accuracy of the laser radar body 1 to decrease. The wind generated by the motor 203 and the fan blades 204 is blown toward the laser radar body 1 through the air outlet 207, and the heating coil 202 is turned off at the same time, which can be used for dust removal of the laser radar body 1.

[0023] Example 2

[0024] Reference Figure 2-3 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0025] In this embodiment, an air inlet 206 is provided at the bottom of the box body 201 , and a dustproof net is fixedly connected to the inner cavity of the air inlet 206 .

[0026] Both sides of the heating coil 202 are fixedly connected with connecting rods 205 , and both ends of the connecting rods 205 are fixedly connected to the inner cavity of the box body 201 .

[0027] The heating coil 202 is located directly above the air inlet 206 , and the motor 203 and the fan blades 204 are located at the center of the heating coil 202 .

[0028] like Figure 2-3 As shown, the connecting rod 205 is used to fix the heating coil 202, and the air inlet 206 cooperates with the dustproof net to allow air flow to enter and prevent dust from entering the box body 201 along with the air.

[0029] Example 3

[0030] Reference Figure 4 , which is the third embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0031] In this embodiment, the laser radar body 1 includes an optical transmitting end, an optical detector, a main amplifier and a preamplifier, and a main processor.

[0032] like Figure 4 As shown, when the sensor detects an obstacle near the ship, the laser radar body 1 will emit laser from the optical transmitting end under the condition of a scanning frequency of 100MHz. After the returning laser is received by the photon detector, it is sent to the main amplifier and preamplifier in the form of echo pulses for amplification. Then the main processor converts the amplified echo pulses into echo signals, performs triangulated laser ranging processing on the echo signals, and completes the ranging.

[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0034] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A radar-based ship target early warning system, comprising a laser radar body (1), characterized in that: A snow removal unit (2) is provided at the bottom of the laser radar body (1), and the snow removal unit (2) includes a box (201). The top of the box (201) is fixedly connected to the bottom of the laser radar body (1) via a support rod. A motor (203) is fixedly connected to the bottom of the inner cavity of the box (201). The output shaft of the motor (203) is transmission-connected to a fan blade (204). A heating coil (202) is provided in the inner cavity of the box (201), and air outlet nozzles (207) are connected to the four sides of the top of the box (201).

2. The radar-based hull target early warning system according to claim 1, characterized in that: An air inlet (206) is provided at the bottom of the box body (201), and a dustproof net is fixedly connected to the inner cavity of the air inlet (206).

3. The radar-based ship target early warning system according to claim 1, characterized in that: Both sides of the heating coil (202) are fixedly connected to connecting rods (205), and both ends of the connecting rods (205) are respectively fixedly connected to the inner cavity of the box body (201).

4. The radar-based ship target early warning system according to claim 1, characterized in that: The heating coil (202) is located directly above the air inlet (206), and the motor (203) and the fan blade (204) are located at the center of the heating coil (202).

5. The radar-based ship target early warning system according to claim 1, characterized in that: The laser radar body (1) comprises an optical transmitting end, an optical detector, a main amplifier and a preamplifier, and a main processor.

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