Pedestrian target detection device based on radar

Abstract

The utility model discloses a pedestrian target detection device based on radar, including protection shell, rotation subassembly, radar transmit-receive subassembly, telescopic subassembly, the right side edge of protection shell is equipped with power supply wiring port and communication wiring port, the top of protection shell is equipped with radar detection port, rotation subassembly includes first rotation motor and bracing frame. The radar receiving and transmitting assembly can be rotated by 360 degrees in the horizontal direction through the rotating assembly, the radar receiving and transmitting assembly can be stretched and retracted through the stretching and retracting assembly, and therefore the protection function is achieved, the radar transmitting and receiving antenna can be rotated by 180 degrees in the vertical direction through the second rotating motor and the third rotating motor, and the radar receiving and transmitting function is achieved. Therefore, radar omnibearing detection is realized through cooperation with the rotating assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of pedestrian target detection, in particular to a pedestrian target detection device based on radar. Background Art

[0002] Pedestrian target detection refers to the detection and identification of pedestrians by using radar technology, which is used in many fields such as monitoring, accident warning, and traffic management. For urban traffic management departments, accurately understanding the travel patterns and behavior habits of pedestrians is crucial to improving traffic conditions and ensuring pedestrian safety.

[0003] With the rapid development of transportation, the number of traffic accidents is also increasing. In order to reduce the incidence of traffic accidents and improve the safety of road traffic, pedestrian detection technology has been widely studied and applied in the field of intelligent driving. Existing pedestrian detection technologies mainly include vision-based methods and radar-based methods. Among them, the vision-based method is greatly affected by factors such as lighting and weather, and is easily affected by changes in pedestrian posture, clothing color, etc.; while the radar-based method has good anti-interference performance. For this reason, we propose a radar-based pedestrian detection device with all-round detection, protection performance and good anti-interference performance. Utility Model Content

[0004] The main purpose of the utility model is to provide a radar-based pedestrian target detection device. By providing a rotating component, the radar transceiver component can be rotated 360° in the horizontal direction. By providing a telescopic component, the radar transceiver component can be telescoped to achieve a protection function. By providing a second and third rotating motors, the radar transmitting and receiving antennas can be rotated 180° in the vertical direction, thereby cooperating with the rotating component to achieve radar all-round detection.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A radar-based pedestrian target detection device comprises a protective shell, a rotating component, a radar transceiver component, and a telescopic component. A power connection port and a communication connection port are provided on the right side of the protective shell, and a radar detection port is provided on the top of the protective shell. The rotating component comprises a first rotating motor and a support frame. The rotating component is installed at the bottom of the protective shell, and the support frame is connected to the first rotating motor gear. The radar transceiver component comprises a radar transmitter, a radar receiver, a radar transmitting antenna, a radar receiving antenna, and a battery. The radar transmitter and the radar receiver are fixed on the left and right sides of the top of the support frame, and the battery is fixed on the top of the support frame. The telescopic component comprises a private service electric cylinder, a protective rod, a second rotating motor, and a third rotating motor. The private service electric cylinder is installed at the center position of the top of the support frame, and the protective rod is fixed on the top of the private service electric cylinder. The second rotating motor and the third rotating motor are installed on the left and right sides of the top of the private service electric cylinder, and the radar transmitting antenna and the radar receiving antenna are fixed on the second and third rotating motors.

[0007] Furthermore, the protective shell includes a protective shell, a power wiring port, a communication wiring port, and a radar detection port. The edge of the radar detection port is higher than the protective shell, and the edge of the detection port is turned down to prevent rainwater and debris from entering the radar detection port.

[0008] Furthermore, the rotating assembly includes a first rotating motor and a support frame, the first rotating motor is mounted with a main gear, and the support frame is connected to the first rotating motor via a gear.

[0009] Furthermore, the support frame includes a fixed base, a bearing, a support rod, a sub-gear, and a support platform. The fixed base is fixed to the bottom of the protective shell, the support rod is installed on the fixed base through the bearing, the sub-gear is installed on the support rod, and the height of the sub-gear is higher than the fixed base, the support platform is fixedly connected to the support rod, the first rotating motor drives the main gear to rotate, the main gear drives the sub-gear to rotate, and the sub-gear drives the support rod and the support platform to rotate 360° in the horizontal direction.

[0010] Furthermore, the radar transceiver assembly includes a radar transmitter, a radar receiver, a battery, a radar transmitting antenna, and a radar receiving antenna. The battery is installed on the supporting platform and is used as a backup power supply in the event of an external power supply interruption. The radar transmitter and radar receiver are respectively installed on the left and right sides of the supporting platform. The radar transmitter is connected to the radar transmitting antenna through a transmitting feeder, and the radar receiver is connected to the radar receiving antenna through a receiving feeder. The radar transceiver assembly can rotate with the supporting platform.

[0011] Furthermore, the radar receiver includes a signal processing module and an RCS calculation and analysis module. The signal processing module performs filtering and noise reduction on the signal received by the radar receiving antenna. The RCS calculation and analysis module estimates the RCS value of the pedestrian and constructs a pedestrian model through the RCS modeling method.

[0012] Furthermore, the telescopic assembly includes a private service electric cylinder, a protective rod, a detection port protective cover, a second rotating motor, and a third rotating motor. The private service electric cylinder is installed at the center of the support platform, one end of the protective rod is fixed to the top of the private service electric cylinder, and the other end of the protective rod is fixedly connected to the detection port protective cover. The top of the protective rod is set as an arc spherical surface, and the second and third rotating motors are symmetrically installed on the left and right sides of the top of the private service electric cylinder in the horizontal direction. The radar transmitting antenna and the radar receiving antenna are respectively connected to the second and third rotating motors, and the second and third rotating motors respectively drive the radar transmitting antenna and the radar receiving antenna to rotate 180 degrees in the vertical direction.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) By setting up a private service electric cylinder, a protective rod and a detection port protective cover, when the device starts working, the private service electric cylinder rises, and the protective rod drives the detection port protective cover to rise, which does not affect radar detection. When the device stops working, the private service electric cylinder drives the protective rod to descend, and the detection port protective cover automatically closes as the protective rod descends;

[0015] (2) By providing a rotating assembly, the radar transceiver assembly can be rotated 360° in the horizontal direction. By providing a second and third rotating motors, the radar transmitting and receiving antennas can be rotated 180° in the vertical direction, thereby cooperating with the rotating assembly to achieve all-round radar detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a radar-based pedestrian target detection device of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a protective shell of a radar-based pedestrian target detection device of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a rotating assembly of a radar-based pedestrian target detection device of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of a radar transceiver component of a radar-based pedestrian target detection device of the utility model;

[0020] Figure 5 The utility model is a schematic structural diagram of a telescopic component of a radar-based pedestrian target detection device.

[0021] In the figure: 1. protective shell; 101. protective shell; 102. power connection port; 103. communication connection port; 104. radar detection port; 2. rotating assembly; 211. first rotating motor; 212. main gear; 220. support frame; 221. fixed base; 222. bearing; 223. support rod; 224. sub-gear; 225. support platform; 3. radar transceiver assembly; 301. radar transmitter; 302. radar receiver; 303. battery; 304. radar transmitting antenna; 305. radar receiving antenna; 4. telescopic assembly; 401. private service electric cylinder; 402. protective rod; 403. detection port protective cover; 404. second rotating motor; 405. third rotating motor. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limitations on the present invention. In order to better illustrate the specific implementation methods of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. Example

[0023] like Figure 1-5 As shown, a radar-based pedestrian target detection device comprises a protective shell 1, a rotating component 2, a radar transceiver component 3, and a telescopic component 4. The right side of the protective shell 1 is provided with a power connection port 102 and a communication connection port 103, and the top of the protective shell 1 is provided with a radar detection port 104. The rotating component 2 comprises a first rotating motor 211 and a support frame 220. The rotating component 2 is mounted on the bottom of the protective shell 1. The support frame 220 is gear-connected to the first rotating motor 211. The radar transceiver component 3 comprises a radar transmitter 301, a radar receiver 302, a radar transmitting antenna 304, a radar receiving antenna 305, and a battery 303. The radar transmitter 301 and the radar receiver 302 are fixed on the left and right sides of the top of the support frame 220, the battery 303 is fixed on the top of the support frame 220, the telescopic assembly 4 includes a private service electric cylinder 401, a protective rod 402, a second rotating motor 404, and a third rotating motor 405. The private service electric cylinder 401 is installed at the center of the top of the support frame 220, the protective rod 402 is fixed on the top of the private service electric cylinder 401, the second rotating motor 404 and the third rotating motor 405 are installed on the left and right sides of the top of the private service electric cylinder 401, and the radar transmitting antenna 304 and the radar receiving antenna 305 are fixed on the second and third rotating motors 405.

[0024] The protective shell 1 includes a protective shell body 1, a power connection port 102, a communication connection port 103, and a radar detection port 104. The edge of the radar detection port 104 is higher than the protective shell body 1, and the edge of the detection port is turned down to prevent rainwater and debris from entering the radar detection port 104.

[0025] The rotating assembly 2 includes a first rotating motor 211 and a support frame 220 . A main gear 212 is mounted on the first rotating motor 211 . The support frame 220 is connected to the first rotating motor 211 via gears.

[0026] The support frame 220 includes a fixed base 221, a bearing 222, a support rod 223, a sub-gear 224, and a support platform 225. The fixed base 221 is fixed to the bottom of the protective shell 1, the support rod 223 is installed on the fixed base 221 through the bearing 222, the sub-gear 224 is installed on the support rod 223, and the sub-gear 224 is higher than the fixed base 221. The support platform 225 is fixedly connected to the support rod 223. The first rotating motor 211 drives the main gear 212 to rotate, the main gear 212 drives the sub-gear 224 to rotate, and the sub-gear 224 drives the support rod 223 and the support platform 225 to rotate 360° in the horizontal direction.

[0027] The radar transceiver assembly 3 includes a radar transmitter 301, a radar receiver 302, a battery 303, a radar transmitting antenna 304, and a radar receiving antenna 305. The battery 303 is installed on the supporting platform 225 and is used as a backup power supply in case of an external power supply interruption. The radar transmitter 301 and the radar receiver 302 are respectively installed on the left and right sides of the supporting platform 225. The radar transmitter 301 is connected to the radar transmitting antenna 304 through a transmitting feeder, and the radar receiver 302 is connected to the radar receiving antenna 305 through a receiving feeder. The radar transceiver assembly 3 can rotate together with the supporting platform 225.

[0028] The radar receiver 302 includes a signal processing module and an RCS calculation and analysis module. The signal processing module performs filtering and noise reduction processing on the signal received by the radar receiving antenna 305. The RCS calculation and analysis module estimates the RCS value of the pedestrian and constructs a pedestrian model through the RCS modeling method.

[0029] The telescopic assembly 4 includes a private service electric cylinder 401, a protective rod 402, a detection port protective cover 403, a second rotating motor 404, and a third rotating motor 405. The private service electric cylinder 401 is installed at the center of the support platform 225. One end of the protective rod 402 is fixed to the top of the private service electric cylinder 401, and the other end of the protective rod 402 is fixedly connected to the detection port protective cover 403. The top of the protective rod 402 is set as an arc spherical surface. The second and third rotating motors 405 are symmetrically installed on the left and right sides of the top of the private service electric cylinder 401 in the horizontal direction. The radar transmitting antenna 304 and the radar receiving antenna 305 are respectively connected to the second and third rotating motors 405. The second and third rotating motors 405 respectively drive the radar transmitting antenna 304 and the radar receiving antenna 305 to rotate 180 degrees in the vertical direction.

[0030] By adopting the above technical solution: when the radar detection device needs to work, the private service electric cylinder 401 works to drive the protective rod 402, the radar transmitting antenna 304 and the radar receiving antenna 305 to rise, the protective rod drives the detection port protective cover 403 to rise, the detection port protective cover 403 is opened, and the radar antenna protrudes out of the radar detection port 104, the second and third rotating motors 405 drive the radar antenna to rotate, and adjust the vertical angle of the radar antenna, the radar transmitter 301 generates a high-frequency signal, which is transmitted to the radar transmitting antenna 304 through the transmitting feeder, the radar receiving antenna 305 receives the radio wave, and transmits it to the radar receiver 302 through the receiving feeder, the rotating component 2 drives the radar transceiver component 3 to rotate, and adjusts the horizontal angle of the radar antenna, after the device stops working, the private service electric cylinder 401 drives the protective rod 402 to descend, and the detection port protective cover 403 is automatically closed under the drive of the protective rod 402.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A radar-based pedestrian target detection device, comprising a protective shell (1), a rotating component (2), a radar transceiver component (3), and a telescopic component (4), wherein the right side of the protective shell (1) is provided with a power connection port (102) and a communication connection port (103), and the top of the protective shell (1) is provided with a radar detection port (104), the rotating component (2) comprises a first rotating motor (211) and a support frame (220), the rotating component (2) is mounted on the bottom of the protective shell (1), the support frame (220) is gear-connected to the first rotating motor (211), and the radar transceiver component (3) comprises a radar transmitter (301), a radar receiver (302), a radar transmitting antenna (304), a radar receiving antenna (305), and a battery (303) , the radar transmitter (301) and the radar receiver (302) are fixed on the left and right sides of the top of the support frame (220), the battery (303) is fixed on the top of the support frame (220), the telescopic assembly (4) includes a private service electric cylinder (401), a protective rod (402), a second rotating motor (404), and a third rotating motor (405), the private service electric cylinder (401) is installed at the center of the top of the support frame (220), the protective rod (402) is fixed on the top of the private service electric cylinder (401), the second rotating motor (404) and the third rotating motor (405) are installed on the left and right sides of the top of the private service electric cylinder (401), and the radar transmitting antenna (304) and the radar receiving antenna (305) are fixed on the second and third rotating motors (405); A main gear (212) is mounted on the first rotating motor (211); the support frame (220) is connected to the first rotating motor (211) via a gear; the support frame (220) comprises a fixed base (221), a bearing (222), a support rod (223), a sub-gear (224), and a support platform (225); the fixed base (221) is fixed to the bottom of the protective shell (1); the support rod (223) is mounted on the fixed base (221) via the bearing (222) 1), the sub-gear (224) is installed on the support rod (223), and the height of the sub-gear (224) is higher than the fixed base (221), the support platform (225) is fixedly connected to the support rod (223), the first rotating motor (211) drives the main gear (212) to rotate, the main gear (212) drives the sub-gear (224) to rotate, and the sub-gear (224) drives the support rod (223) and the support platform (225) to rotate 360 ​​degrees in the horizontal direction.

2. The radar-based pedestrian target detection device according to claim 1, characterized in that: The protective shell (1) comprises a protective shell (1) body, a power wiring port (102), a communication wiring port (103), and a radar detection port (104); the edge of the radar detection port (104) is higher than the protective shell (1) body, and the edge of the detection port is turned down to prevent rainwater and debris from entering the radar detection port (104).

3. The radar-based pedestrian target detection device according to claim 1, characterized in that: The radar transceiver assembly (3) comprises a radar transmitter (301), a radar receiver (302), a storage battery (303), a radar transmitting antenna (304), and a radar receiving antenna (305). The storage battery (303) is installed on the support platform (225) and is used as a backup power supply when an external power supply is interrupted. The radar transmitter (301) and the radar receiver (302) are installed on the left and right sides of the support platform (225) respectively. The radar transmitter (301) is connected to the radar transmitting antenna (304) through a transmitting feeder, and the radar receiver (302) is connected to the radar receiving antenna (305) through a receiving feeder. The radar transceiver assembly (3) can rotate together with the support platform (225).

4. The radar-based pedestrian target detection device according to claim 1, characterized in that: The telescopic assembly (4) comprises a private service electric cylinder (401), a protective rod (402), a detection port protective cover (403), a second rotating motor (404), and a third rotating motor (405). The private service electric cylinder (401) is installed at the center of the support platform (225). One end of the protective rod (402) is fixed to the top of the private service electric cylinder (401), and the other end of the protective rod (402) is fixedly connected to the detection port protective cover (403). The top of the protective rod (402) is set as an arc spherical surface. The second and third rotating motors (405) are symmetrically installed on the left and right sides of the top of the private service electric cylinder (401) in the horizontal direction. The radar transmitting antenna (304) and the radar receiving antenna (305) are respectively connected to the second and third rotating motors (405). The second and third rotating motors (405) respectively drive the radar transmitting antenna (304) and the radar receiving antenna (305) to rotate 180 degrees in the vertical direction.

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