Child bicycle dummy serving as automobile auxiliary driving target object

Abstract

The utility model relates to a child bicycle dummy serving as an automobile auxiliary driving target object, which belongs to the technical field of automobile active safety and comprises a bicycle component and a child riding dummy component. The bicycle assembly comprises a handlebar assembly, a front wheel assembly, a frame assembly and a rear wheel assembly; the frame assembly comprises a frame body and a supporting base. The child bicycle dummy is installed on the mobile control system through the supporting base. A front wheel of the front wheel assembly and a rear wheel of the rear wheel assembly each comprise a supporting plate, a spoke and a rotating mechanism. The elastic rope penetrates through the spokes, and the two ends of the elastic rope penetrate through the through holes in the supporting plate and the rotating mechanism respectively and are knotted and fixed; the two arms of the child riding dummy assembly are symmetrically connected to the shoulder positions of the left side and the right side of the trunk through elastic ropes, and the hand portions of the two arms are connected with the two ends of the faucet assembly respectively. According to the utility model, the problems of shortage of target objects of the child bicycle dummy and high cost and long period during replacement or maintenance are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of active safety for automobiles, and in particular to a child bicycle dummy used as a target for assisted driving in automobiles. Background Technology

[0002] With the rapid development of intelligent driver assistance systems (ADAS) and autonomous driving technology, active safety functions for pedestrians and cyclists (such as automatic emergency braking (AEB) and forward collision warning (FCW)) have become core testing items in the industry.

[0003] Statistics show that children are involved in approximately 20% of traffic accidents globally. Correspondingly, China's "Regulations on the Management of Road Testing of Intelligent Connected Vehicles" explicitly requires that test targets cover vulnerable road users (VRUs), including child cyclists. However, existing testing technologies have significant limitations in simulating the high-risk scenario of children riding bicycles. For example, the system needs to identify children riding bicycles on complex roads. Due to their small size (under 1.2m in height) and complex movement trajectories (such as sudden changes of direction), traditional adult cycling dummy models cannot meet the testing accuracy requirements and struggle to identify the overall outline and movement patterns of the "child-bicycle" combination, thus failing to meet the needs of scenario testing.

[0004] The lack of standardized test dummies for children's cycling scenarios in China makes it difficult to compare data from different testing organizations. Imported children's cycling dummies from abroad have poor cost-effectiveness and high overall costs; furthermore, the test subjects are consumables requiring frequent maintenance, repair, or replacement, and after-sales service and support cycles are long overseas. Moreover, the designs of foreign products differ from the prototypes used by actual road users in China, making them unrepresentative. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a children's bicycle dummy as a target for automotive assisted driving. It solves the problems of the scarcity of similar target objects and the high cost and long cycle required for replacement or maintenance in the prior art. It increases the coverage of target objects in real road scenarios, which is conducive to improving the accuracy of the evaluation data obtained from the test and provides important support for the research and development of intelligent assisted driving systems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A child bicycle dummy used as a target for assisted driving in automobiles, the child bicycle dummy comprising a bicycle assembly and a child riding dummy assembly; the bicycle assembly comprising a handlebar assembly, a front wheel assembly, a frame assembly, and a rear wheel assembly;

[0008] The frame assembly includes a frame body and a support base;

[0009] The handlebar assembly is located above the front end of the frame body, and the front wheel assembly and the rear wheel assembly are located on the front and rear sides of the frame body, respectively; the handlebar assembly, the front wheel assembly, and the rear wheel assembly are respectively connected to the frame body; the support base is located at the bottom end of the frame body, and the child bicycle dummy is mounted on the motion control system through the support base;

[0010] Both the front wheel of the front wheel assembly and the rear wheel of the rear wheel assembly include a support plate, spokes, and a rotating mechanism; the support plate is a circular ring structure, the rotating mechanism is located at the center of the support plate, and multiple through holes are evenly distributed around the support plate and the rotating mechanism, respectively; the spokes are connected to the support plate at the through holes; an elastic rope passes through the spokes, and both ends of the elastic rope pass through the through holes on the support plate and the rotating mechanism, respectively, and are knotted and fixed.

[0011] The child riding dummy assembly includes a head, torso, buttocks, legs, and arms; the head is positioned above the center of the top of the torso, the buttocks are strapped to the lower part of the torso, and the bottom of the torso and the buttocks are respectively connected to the rear end of the frame body; the two legs are respectively positioned on the left and right sides below the torso and are respectively connected to the frame body in a riding posture; the two arms are symmetrically connected to the left and right shoulders of the torso by elastic ropes, and the hands of the two arms are respectively connected to the two ends of the handlebar assembly.

[0012] Furthermore, the outer layer of the bicycle component is provided with a composite aluminum film layer.

[0013] Furthermore, the handlebar assembly includes a bicycle handlebar, a first buckle, and a first support tube; the middle part of the bicycle handlebar is mounted on the top of the first support tube via the first buckle; the bottom end of the first support tube is mounted on the front end of the frame assembly.

[0014] Furthermore, the lower surfaces of the handlebars and the hands of the arms are respectively provided with Velcro, and the hands of the two arms are respectively connected to the handlebars via the Velcro.

[0015] Furthermore, the frame body includes a first connector, a front tube, a second connector, a rear tube, a third connector, and a center tube; the first connector, the second connector, and the third connector each have three countersunk holes, which are respectively arranged at the front end, the bottom end, and the rear end of the frame body;

[0016] The upper end of the front tube is connected to the front end of the middle tube by being inserted into the countersunk holes of the first connector; the lower end of the front tube is connected to the lower end of the rear tube by being inserted into the countersunk holes of the second connector; the upper end of the rear tube is connected to the rear end of the middle tube by being inserted into the countersunk holes of the third connector; the support base is installed below the second connector by the countersunk hole located at the bottom end of the second connector.

[0017] The faucet assembly is fastened to the upper end of the first connector; the front wheel assembly has second support tubes symmetrically arranged on the left and right sides of the front wheel, and the first rotating mechanism of the front wheel is connected to the left and right sides of the first connector respectively through the two second support tubes;

[0018] The rear wheel assembly also includes a slanted tube and a horizontal tube; the two slanted tubes and the two horizontal tubes are symmetrically arranged on the left and right sides of the rear wheel; the second rotating mechanism of the rear wheel is connected to the third connecting member through the slanted tube, and the second rotating mechanism is connected to the second connecting member through the horizontal tube.

[0019] Furthermore, the frame assembly also includes chain cover foam, U-shaped connector, and third support tube;

[0020] The chain cover foam is wrapped around the outside of the second connector; the U-shaped joint is installed on the third connector, and the third support tube is installed laterally on the U-shaped joint;

[0021] The buttocks are connected to the U-shaped connector via Velcro straps; the two legs are respectively fitted onto the third support tube on the left and right sides of the U-shaped connector, and the ankles of the legs are attached to the chain cover foam via Velcro.

[0022] Furthermore, the frame assembly also includes a second clip and a third clip;

[0023] The second buckle is symmetrically installed on the left and right sides of the second connector, and the third buckle is symmetrically installed on the left and right sides of the third connector; the horizontal tube and the inclined tube are respectively inserted into the openings of the second buckle and the third buckle, and are locked and fixed by bolts.

[0024] Furthermore, the front wheel also includes a rubber front wheel; the rear wheel also includes a rubber rear wheel;

[0025] The front and rear rubber wheels are respectively filled with strip-shaped foam and arranged on the outside of the support plate. The strip-shaped foam is glued and fixed to the support plate.

[0026] Furthermore, the head, torso, legs, and arms are all made of foam according to simulated features, and each of the foams is provided with a reinforcing skeleton; the child riding dummy components are all covered with an outer skin.

[0027] Furthermore, the outer skin is a composite coated fabric or leather.

[0028] The beneficial effects of this utility model are:

[0029] The child bicycle dummy provided by this utility model, designed as a target for automotive assisted driving, is based on a real child bicycle and child rider. It can exhibit the same visual characteristics as a real child bicycle and child rider, providing a standardized test target in a child riding scenario for the evaluation and testing of automotive assisted driving systems. This meets the needs of automotive assisted driving system evaluation and testing, and can disperse the impact force of collisions, reduce collision damage to bicycle components and the child bicycle dummy, and extend their service life. It not only solves the problems of the shortage of child bicycle dummy targets and the high cost and long cycle required for replacement or maintenance, but also can move according to real road scenarios under the drive of a motion control system, improving the accuracy of the evaluation data obtained from the test.

[0030] The bicycle components of this invention, through the composite aluminum film layer and the child bicycle dummy through the outer skin, both possess the same radar reflection properties as real children's bicycles and child riders, so that they can be identified using cameras, vehicle radar, etc., to meet testing requirements.

[0031] This utility model is mainly composed of non-metallic materials such as plastic tubes and foam, which has low manufacturing cost, is easy to maintain, and has a lightweight overall structure that is easy to transport; a reinforcing skeleton is set inside the foam filling, which takes into account both the structural strength and durability of the target object.

[0032] This invention utilizes flexible connection methods such as buckles, Velcro, Velcro straps, and elastic cords to enable timely separation of components within the child riding dummy assembly and bicycle assembly upon collision with the test vehicle. This disperses the impact force of the collision, effectively preventing damage to the child bicycle dummy and the test vehicle, extending their service life. Furthermore, the flexible connection method facilitates subsequent reinstallation and improves testing efficiency.

[0033] The support base of this utility model not only connects to the mobile control system, but also supports the target object, increasing its strength and making it less prone to bending or breaking under greater pressure. This ensures that the overall structure of the children's bicycle component remains stable during movement and is less likely to tip over. Attached Figure Description

[0034] Figure 1This is a schematic diagram of the overall structure of the children's bicycle dummy, which is a target of the present invention for assisted driving of automobiles.

[0035] Figure 2 This is a schematic diagram of the children's bicycle handlebar assembly structure in this utility model;

[0036] Figure 3 This is a schematic diagram of the front wheel assembly of a children's bicycle in this utility model;

[0037] Figure 4 This is a schematic diagram of the structure of the children's bicycle frame assembly in this utility model;

[0038] Figure 5 This is a schematic diagram of the rear wheel assembly of a children's bicycle in this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of the children's bicycle rear support assembly in this utility model;

[0040] Figure 7 This is a schematic diagram of the child riding dummy component in this utility model.

[0041] The components are as follows: 1-Leader assembly, 11-Bicycle stem, 12-First buckle, 13-First support tube, 2-Composite aluminum film layer, 3-Front wheel assembly, 31-Tube plug, 32-Second support tube, 33-Rubber front wheel, 34-First support plate, 35-First spoke, 36-First rotating mechanism, 37-First connecting rod, 38-Front fender, 4-Frame assembly, 41-First connector, 42-Front tube, 43-Support base, 44-Second connector, 45-Second buckle, 46-Chain cover foam, 47-Rear tube, 48-Third connector. Components, 49-U-shaped connector, 410-Third support tube, 411-Third buckle, 412-Middle tube, 413-Front reflector, 5-Rear wheel assembly, 51-Angle tube, 52-Horizontal tube, 53-Rubber rear wheel, 54-Second support plate, 55-Second spoke, 56-Second connecting rod, 57-Second rotating mechanism, 58-Rear fender, 6-Rear support assembly, 61-Support bend tube, 62-Rear support foam, 63-Rear reflector, 7-Child riding dummy assembly, 71-Head, 72-Tortoise, 73-Hips, 74-Legs, 75-Arms. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solutions of this application, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0043] The directional terms such as above, below, left, right, front, and back used in this application are based on the positional relationships shown in the attached drawings. Different attached drawings may result in different positional relationships, therefore they should not be interpreted as limitations on the scope of protection.

[0044] In this utility model, the terms "installation," "connection," "interlocking," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a connection that allows communication, a direct connection, or an indirect connection through an intermediate medium. They can also refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0045] This embodiment describes a child bicycle dummy used as a target for automotive driver assistance systems, primarily to meet the needs of automotive driver assistance system evaluation and testing.

[0046] like Figure 1 As shown, the child bicycle dummy includes a bicycle assembly and a child riding dummy assembly 7. The bicycle assembly includes a handlebar assembly 1, a front wheel assembly 3, a frame assembly 4, a rear wheel assembly 5, and a rear stand assembly 6. The child riding dummy assembly 7 is mounted on the bicycle assembly in a child riding posture, simulating the characteristics of a real child riding. Furthermore, the bicycle assembly has radar reflective properties to meet the requirements of automotive driver assistance system evaluation and testing, such as by setting a composite aluminum film layer 2 on the outer layer of the bicycle assembly.

[0047] The headlight assembly 1 is located above the front end of the frame assembly 4, such as... Figure 2 The figure shows a bicycle handlebar 11, a first buckle 12, and a first support tube 13.

[0048] In this embodiment, the bicycle handlebar 11 has a first connecting hole at its bottom center for connection with the first buckle 12. Both ends of the bicycle handlebar 11 have Velcro straps, which are securely attached with adhesive backing for connection with the child riding dummy assembly 7. The bicycle handlebar 11 is made of a plastic tube bent to mimic the shape of a real bicycle handlebar, with T-shaped elastic plugs inserted at both ends to effectively prevent the handlebar 11 from detaching and damaging the test vehicle's surface or window glass in the event of a collision during testing.

[0049] The first buckle 12 has a U-shaped opening at its upper end, and a first bolt is provided in the middle of the inner end of the U-shaped opening. The first buckle 12 has a branch pipe at its lower end.

[0050] When the middle part of the bicycle handlebar 11 is inserted into the U-shaped opening of the first buckle 12, the upper end of the first buckle 12 clamps the bicycle handlebar 11 and inserts the first bolt into the first connecting hole to center the bicycle handlebar 11 and prevent the bicycle handlebar 11 from rotating. The lower end of the handlebar buckle 12 is inserted into the first support tube 13 and fixedly connected by a pin.

[0051] The front wheel assembly 3 is located in front of the frame assembly 4, such as Figure 3 As shown, the front wheel assembly 3 in this embodiment includes a pipe plug 31, a second support pipe 32, a rubber front wheel 33, a first support plate 34, a first spoke 35, a first rotating mechanism 36, a first connecting rod 37, and a front mudguard 38.

[0052] The front wheel is composed of a rubber front wheel 33, a first support plate 34, a first spoke 35, and a first rotating mechanism 36.

[0053] Specifically, the first support plate 34 has a circular ring structure, and the rubber front wheel 33 is arranged on the outside of the first support plate 34. The rubber front wheel 33 is filled with strip-shaped foam, which is glued and fixed to the first support plate 34. Multiple first through holes are evenly distributed around the first support plate 34. One end of multiple first spokes 35 is connected to the first support plate 34 at one of the first through holes.

[0054] The first rotating mechanism 36 is arranged at the center of the first support plate 34 and includes a bearing, a bearing housing, and a central shaft. The bearing is installed inside the bearing housing, and the central shaft passes through the bearing. The bearing is designed here to maintain smooth rotation of the front wheel assembly 3. The bearing housing has a ring of second through holes, the same number as the first through holes. The first spoke 35 has an elastic cord inside. One end of the elastic cord passes through one of the second through holes on the bearing housing and is knotted and fixed, while the other end passes through the first through hole opposite the second through hole and is knotted and fixed.

[0055] In this embodiment, the rubber front wheel 33 can be a real bicycle road tire. During the test, it can contact the ground and rotate using the first rotating mechanism 36 to simulate the riding state of a real bicycle and generate a micro-Doppler effect, which makes the test wheel radar identification more accurate.

[0056] Two second support tubes 32 are symmetrically arranged on the left and right sides of the front wheel. The tube plug 31 and the first connecting rod 37 are respectively inserted into the upper and lower ends of the second support tubes 32. The bottom end of the first connecting rod 37 is provided with a third through hole. The two ends of the central shaft of the first rotating mechanism 36 pass through the third through hole and are fixed with bolts.

[0057] The front fender 38 is attached to the second support tubes 32 by Velcro straps and positioned above the front wheel, simulating the appearance of a real bicycle.

[0058] Chassis components 4 Figure 4The device includes a first connector 41, a front tube 42, a support base 43, a second connector 44, a second buckle 45, a chain cover foam 46, a rear tube 47, a third connector 48, a U-shaped connector 49, a third support tube 410, a third buckle 411, a middle tube 412, and a front reflector 413.

[0059] In this embodiment, the front tube 42, rear tube 47, and middle tube 412 are combined together by the first connector 41, the second connector 44, and the third connector 48 to form a triangular frame body.

[0060] The first connector 41 has three first countersunk holes, with the opening directions of the first countersunk holes being upward, downward, and backward, respectively. The upward first countersunk hole is used to install the first support tube 13, the downward first countersunk hole is used to connect the front tube 42, and the backward first countersunk hole is used to connect the middle tube 412. The first connector 41 is connected to the first support tube 13, the front tube 42, and the middle tube 412 and is fastened by pins.

[0061] Bolt holes are provided on the left and right sides of the first connector 41. The two second support tubes 32 of the front wheel assembly 3 are placed on both sides of the first connector 41. The two bolts pass through the tube plugs 31 and are screwed into the bolt holes to lock the second support tubes 32 to the first connector 41, thereby realizing the assembly of the frame assembly 4 and the front wheel assembly 3.

[0062] The second connector 44 has three second countersunk holes. Two of the second countersunk holes are on the top of the connector 44 and are inclined forward and backward respectively. The second connector 44 is connected to the front tube 42 and the rear tube 47 through the front and rear second countersunk holes respectively and is fixed with pins. The third second countersunk hole is on the bottom of the connector 44 and faces downward. The support base 43 is installed below the second connector 44 through the downward-facing second countersunk hole and is locked with bolts. The support base 43 is used for the overall support of the child bicycle dummy. During testing, the child bicycle dummy is mounted on the motion control system through the support base 43, and the motion control system drives the child bicycle dummy to move along a predetermined trajectory.

[0063] The motion control system can be a traction system consisting of a carrier chassis and a belt traction device. The carrier chassis drives the child bicycle dummy to move and turn under the drive of the belt traction device. Alternatively, the motion control system can be a robot chassis, which automatically drives the child bicycle dummy to move according to a set test trajectory.

[0064] The third connector 48 has three third countersunk holes, with the opening directions of the third countersunk holes facing upward, downward, and forward, respectively. The third connector 48 is connected to the U-shaped connector 49, the rear tube 47, and the middle tube 412 through the three third countersunk holes, and is fixed by pins.

[0065] Second buckles 45 are installed on the left and right sides of the second connector 44 respectively. The horizontal tube 52 of the rear wheel assembly 5 is inserted into the opening of the second buckle 45 and locked in place by bolts. Third buckles 411 are installed on the left and right sides of the third connector 48 respectively. The inclined tube 51 of the rear wheel assembly 5 is inserted into the opening of the third buckle 411 and locked in place by bolts.

[0066] In this embodiment, the upper end of the U-shaped connector 49 is a U-shaped structure, and the lower end is a branch pipe. The U-shaped connector 49 is inserted into the third countersunk hole at the top of the third connector 48 through the branch pipe. The U-shaped structure of the U-shaped connector 49 is provided with a fourth through hole. The third support pipe 410 is installed on the U-shaped connector 49 through the fourth through hole for connecting and assembling the child riding dummy assembly 7.

[0067] The second connector 44 is wrapped with chain cover foam 46, which effectively simulates the appearance of a real bicycle and also serves as a buffer to protect the components during the test.

[0068] A front reflector 413 is attached to the front end of the first connector 41 using Velcro. The front reflector 413 can be made of plastic commonly used in bicycles. Its inner plastic plate has multiple geometric raised edges that can reflect light from multiple angles. When illuminated by the headlights, it reflects light and brightly alerts the rider. In nighttime test scenarios, the front reflector 413 is usually white to simulate the real riding state of a bicycle.

[0069] The rear wheel assembly 5 is located behind the frame assembly 4, such as Figure 5 The device includes an inclined tube 51, a horizontal tube 52, a rubber rear wheel 53, a second support plate 54, a second spoke 55, a second connecting rod 56, a second rotating mechanism 57, and a rear mudguard 58.

[0070] The rear wheel is composed of a rubber rear wheel 53, a second support plate 54, a second spoke 55, and a second rotating mechanism 57. The structure and assembly method of the components are the same as those of the front wheel. During the test, both the rear wheel and the front wheel are in contact with the ground and rotate to simulate the riding state of a real bicycle and generate a micro-Doppler effect, which makes the radar recognition of the test wheel more accurate.

[0071] The rubber rear wheel 53 is located on the outside of the second support plate 54. The rubber rear wheel 53 is filled with strip foam, which is glued and fixed to the second support plate 54. The rubber rear wheel 53, like the rubber front wheel 33, can use a real bicycle road tire.

[0072] The second support plate 54 has five through holes evenly distributed around its perimeter, and the bearing seat of the second rotating mechanism 57 has six through holes evenly distributed around its perimeter. The second spoke 55 is mounted on the second support plate 54, and an elastic rope is inserted into the second spoke 55, with its two ends passing through the fifth and sixth through holes respectively, and then knotted to secure it.

[0073] Two inclined tubes 51 are symmetrically arranged on the left and right sides of the rear wheel, facing forward and diagonally upward. Their upper ends are fixed by a third buckle 411. Two horizontal tubes 52 extend forward horizontally and are symmetrically arranged on the left and right sides of the rear wheel. Their front ends are fixed by a second buckle 45. Second connecting rods 56 are respectively installed at the lower end of the inclined tubes 51 and the rear end of the horizontal tubes 52. The outer end of the second connecting rod 56 is provided with a seventh through hole. The second connecting rod 56 is sleeved on the central shaft of the second rotating mechanism 57 through the seventh through hole and fixed by bolts.

[0074] Between the two slant tubes 51, the rear fender 58 is attached to the slant tubes 51 and the rear support assembly 6 by Velcro straps and is located above the rear wheel, simulating the appearance of a real bicycle.

[0075] Rear support component 6 Figure 6 The diagram shows a support bend 61, a rear support foam 62, and a rear reflector 63.

[0076] The support bend 61 is made of plastic tube hot bent into an L shape. Its two ends are flattened to form an installation plane. An eighth through hole is provided on the installation plane. One end of the support bend 61 is bolted to the inclined tube 51 through the eighth through hole, and the other end is sleeved on the central shaft of the second rotating mechanism 57 through the eighth through hole and bolted together with the second connecting rod 56.

[0077] Symmetrical semi-circular grooves are provided on both sides of the rear support foam 62. The horizontal sections of the two support bends 61 are respectively embedded in the semi-circular grooves, clamping the rear support foam 62 and securing it with Velcro straps.

[0078] The rear reflector 63 is glued to the rear side of the rear support foam 62. The rear reflector 63 has the same structure as the front reflector 413, both used to reflect light when illuminated by the bicycle headlight. The rear reflector 63 is usually red, and it is distinguished from the front reflector 413 by the different colors of reflected light, thus making it easy to distinguish the front and rear of the bicycle components.

[0079] The child riding dummy component 7 in this embodiment is as follows: Figure 7 The figure shown includes a head 71, a torso 72, hips 73, legs 74, and arms 75.

[0080] The head 71 is positioned above the center of the top of the torso 72, forming the main body of the dummy. The buttocks 73 are secured to the lower part of the torso 72 via Velcro straps that pass through pre-drilled holes in the buttocks 73. Simultaneously, the Velcro straps are wrapped around the U-shaped connectors 49 in the frame assembly 4 and fastened securely. Two legs 74 are positioned on the left and right sides below the main body of the dummy, forming the left and right legs. The shape of the legs 74 is designed according to the posture of the legs during actual riding, simulating the body shape of a real cyclist. Two arms 75 are symmetrically positioned on the left and right sides of the torso 72 at the shoulder level, forming the left and right arms of the dummy. Elastic ropes pass through the torso 72 and connect the left and right arms together, with the elastic ropes pulling against each other. The arms 75 and torso 72 are assembled into a single structure.

[0081] In this embodiment, the dummy's main body, legs 74, and arms 75 are all made of foam padding, which reduces damage to the components from collisions during testing. Each component has an internal reinforcing frame made of plastic material to reinforce weaker areas in the dummy's main body, legs 74, and arms 75, preventing the foam padding from breaking during a collision. The buttocks 73 are made of EVA (Ethylene Vinyl Acetate Copolymer). In this embodiment, high-density foam or pearl cotton can be used for the foam padding, which is then sculpted into the required components.

[0082] In this embodiment, the child cycling dummy component 7 is installed on the bicycle assembly according to the actual sitting posture of a child riding a bicycle, simulating the posture of a real cyclist. The lower end of the reinforcing frame inside the torso 72 can be inserted into the U-shaped connector 49 of the frame assembly 4 for connection. The lower part of the reinforcing frame of the leg 74 has two symmetrical openings for symmetrically fitting onto the third support tube 410 of the frame assembly 4 on both sides of the U-shaped connector 49, thus connecting the leg 74 to the frame assembly 4. Velcro is provided on the inner side of the ankle of the leg 74, and Velcro is also provided on the chain cover foam 46 on the frame assembly 4 corresponding to the position of the actual bicycle pedals. The lower end of the leg 74 is connected to the chain cover foam 46 via Velcro. The lower surface of the hand of the arm 75 has Velcro for bonding with the Velcro on the bicycle handlebars 11, thus connecting the hand of the arm 75 to the bicycle handlebars 11.

[0083] The child cycling dummy component 7 is entirely covered with an outer skin to further reduce damage to components during collisions. The outer skin has the same radar reflectivity as a real person, and its color matches real human skin and common clothing colors, complying with relevant requirements of domestic and international NCAP (New Car Assessment Program) new car testing standards. In this embodiment, the outer skin can be made of composite coated fabric or leather. If a multi-layer composite coated fabric is used, it must be wear-resistant, tear-resistant, and recognizable by radar detection equipment (such as millimeter-wave radar, lidar, etc.) in the parking assistance system.

[0084] In addition, in this embodiment, the main body of the dummy, consisting of the head 71 and the torso 72, can be sculpted from a single piece of material or composed of two symmetrical half-section parts, making the processing more convenient.

[0085] In this embodiment, the head 21 of the child cycling dummy component 7 is designed based on the head and facial features of a child, ensuring that the head 21 can accurately simulate the head features of a real cyclist, so that it can be recognized by the visual sensors in the car's driver assistance system.

[0086] The bicycle component and the child riding dummy component 7 in this embodiment are designed based on the size and shape of real children's bicycles and child riders, and can exhibit the same visual characteristics as real children's bicycles and child riders.

[0087] Currently, the evaluation and testing of automotive driver assistance systems mainly utilizes cameras and vehicle-mounted radar to identify traffic conditions. When using the child bicycle dummy in this embodiment to cooperate with the automotive driver assistance system for testing and evaluation, the child bicycle dummy is placed on the driving path of the test vehicle in advance before the experiment. After the experiment begins, the car starts and drives along the predetermined path. The camera, vehicle-mounted radar, and other means are used to observe whether the automotive driver assistance system can identify the child bicycle dummy on the path and take safety measures such as alarm and emergency braking.

[0088] Although the principles of this utility model have been described in detail above with reference to preferred embodiments, those skilled in the art should understand that the above embodiments are merely illustrative explanations of the implementation of this utility model and are not intended to limit the scope of this utility model. The details in the embodiments do not constitute a limitation on the scope of this utility model. Any obvious changes, such as equivalent transformations or simple substitutions, based on the technical solution of this utility model without departing from its spirit and scope fall within the protection scope of this utility model.

Claims

1. A child bicycle dummy used as a target for assisted driving in automobiles, characterized in that, The child bicycle dummy includes a bicycle assembly and a child riding dummy assembly (7); the bicycle assembly includes a handlebar assembly (1), a front wheel assembly (3), a frame assembly (4), and a rear wheel assembly (5); The frame assembly (4) includes a frame body and a support base (43); The handlebar assembly (1) is located above the front end of the frame body, and the front wheel assembly (3) and the rear wheel assembly (5) are located on the front and rear sides of the frame body, respectively; the handlebar assembly (1), the front wheel assembly (3), and the rear wheel assembly (5) are respectively connected to the frame body; the support base (43) is located at the bottom end of the frame body, and the child bicycle dummy is mounted on the motion control system through the support base (43); The front wheel of the front wheel assembly (3) and the rear wheel of the rear wheel assembly (5) both include a support plate, spokes and a rotating mechanism; the support plate is a ring structure, the rotating mechanism is located at the center of the support plate, and multiple through holes are evenly distributed around the support plate and the rotating mechanism respectively, and the spokes are connected to the support plate at the through holes; an elastic rope is inserted into the spokes, and the two ends of the elastic rope pass through the through holes on the support plate and the rotating mechanism respectively, and are knotted and fixed. The child riding dummy assembly (7) includes a head (71), torso (72), buttocks (73), legs (74), and arms (75); the head (71) is located above the center of the top of the torso (72), the buttocks (73) are tied to the lower part of the torso (72), the bottom of the torso (72) and the buttocks (73) are respectively connected to the rear end of the frame body; the two legs (74) are respectively located on the left and right sides below the torso (72) and are respectively connected to the frame body in a riding posture; the two arms (75) are symmetrically connected to the left and right shoulder positions of the torso (72) by elastic ropes, and the hands of the two arms (75) are respectively connected to the two ends of the handlebar assembly (1).

2. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 1, is characterized in that... The outer layer of the bicycle component is provided with a composite aluminum film layer (2).

3. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 1, is characterized in that... The handlebar assembly (1) includes a bicycle handlebar (11), a first buckle (12) and a first support tube (13); the middle part of the bicycle handlebar (11) is installed at the top of the first support tube (13) through the first buckle (12); the bottom end of the first support tube (13) is installed at the front end of the frame assembly (4).

4. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 3, is characterized in that... The bicycle handlebars (11) and the lower surfaces of the hands of the arms (75) are respectively provided with Velcro, and the hands of the two arms (75) are respectively connected to the two ends of the bicycle handlebars (11) through the Velcro.

5. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 1, is characterized in that... The frame body includes a first connector (41), a front tube (42), a second connector (44), a rear tube (47), a third connector (48), and a middle tube (412); the first connector (41), the second connector (44), and the third connector (48) each have three countersunk holes, which are respectively arranged at the front end, bottom end, and rear end of the frame body; The upper end of the front tube (42) is connected to the front end of the middle tube (412) by being inserted into the countersunk holes of the first connector (41); the lower end of the front tube (42) is connected to the lower end of the rear tube (47) by being inserted into the countersunk holes of the second connector (44); the upper end of the rear tube (47) is connected to the rear end of the middle tube (412) by being inserted into the countersunk holes of the third connector (48); the support base (43) is installed below the second connector (44) through the countersunk hole located at the bottom end of the second connector (44); The faucet assembly (1) is fastened to the upper end of the first connector (41); the front wheel assembly (3) has second support tubes (32) symmetrically arranged on the left and right sides of the front wheel, and the first rotating mechanism (36) of the front wheel is connected to the left and right sides of the first connector (41) through two second support tubes (32); The rear wheel assembly (5) also includes an inclined tube (51) and a horizontal tube (52); the two inclined tubes (51) and the two horizontal tubes (52) are symmetrically arranged on the left and right sides of the rear wheel; the second rotating mechanism (57) of the rear wheel is connected to the third connecting member (48) through the inclined tube (51), and the second rotating mechanism (57) is connected to the second connecting member (44) through the horizontal tube (52).

6. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 5, is characterized in that... The frame assembly (4) also includes chain cover foam (46), U-shaped connector (49), and third support tube (410); The second connector (44) is wrapped with the chain cover foam (46) on the outside; the U-shaped connector (49) is installed on the third connector (48), and the third support tube (410) is installed laterally on the U-shaped connector (49); The buttocks (73) are connected to the U-shaped connector (49) by Velcro straps; the two legs (74) are respectively fitted onto the third support tube (410) on the left and right sides of the U-shaped connector (49), and the ankles of the lower part of the legs (74) are attached to the chain cover foam (46) by Velcro.

7. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 5, is characterized in that... The frame assembly (4) also includes a second clip (45) and a third clip (411); The second buckle (45) is symmetrically installed on the left and right sides of the second connector (44), and the third buckle (411) is symmetrically installed on the left and right sides of the third connector (48); the horizontal tube (52) and the inclined tube (51) are respectively inserted into the openings of the second buckle (45) and the third buckle (411), and are locked and fixed by bolts.

8. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 1, is characterized in that... The front wheel also includes a rubber front wheel (33); the rear wheel also includes a rubber rear wheel (53); The rubber front wheel (33) and the rubber rear wheel (53) are respectively filled with strip foam and arranged on the outside of the support plate. The strip foam is glued and fixed to the support plate.

9. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 1, is characterized in that... The head (71), torso (72), legs (74) and arms (75) are all made of foam according to simulated features, and each of the foams is provided with a reinforcing skeleton; the child riding dummy component (7) is covered with an outer skin.

10. The child bicycle dummy as a target for assisted driving of an automobile, as described in claim 9, is characterized in that... The outer skin is a composite coated fabric or leather.

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