WO2021189441A1

WO2021189441A1 - Ranging device and movable platform

Info

Publication number: WO2021189441A1
Application number: PCT/CN2020/081759
Authority: WO
Inventors: 林晓龙; 高诗经; 高迪; 周万仁
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-09-30
Also published as: CN112955773A

Abstract

A ranging device (10) and a movable platform (1000). The ranging device (10) comprises a ranging mechanism (100) and heat dissipation structures (200). The ranging mechanism (100) can rotate about a preset rotating shaft. A radio frequency board assembly (110) and a digital board assembly (120) of the ranging mechanism (100) are arranged at an interval to form a gap (130). At least some of the heat dissipation structures (200) disturb the air in the gap (130) with the rotation of the ranging mechanism (100) for heat dissipation.

Description

Ranging device and movable platform

Technical field

This application relates to the technical field of distance measuring equipment, and in particular to a distance measuring device and a movable platform.

Background technique

In order to ensure the safety of the drone's flight and operation, a radar can be installed on the drone to detect the distance between the drone and obstacles during flight, so that the drone can perform obstacle avoidance operations in time. The high heat generated by the radar during operation will easily cause the temperature of the radar to rise, exceeding the upper limit of its stable working temperature, and affect the reliability of the radar operation.

Summary of the invention

Based on this, the present application provides a distance measuring device and a movable platform, which aim to improve the heat dissipation effect of the distance measuring device, thereby improving the operating reliability of the distance measuring device and prolonging the service life of the distance measuring device.

According to the first aspect of the present application, the present application provides a distance measuring device, including:

A distance measuring mechanism, the distance measuring mechanism can be rotated around a preset axis of rotation under the action of an external force; the distance measuring mechanism includes a radio frequency board assembly and a digital board assembly, the radio frequency board assembly and the digital board assembly are spaced apart to form a gap ；

A heat dissipation structure, at least part of the heat dissipation structure is provided in the gap;

Wherein, at least part of the heat dissipation structure can disturb the air in the gap with the rotation of the distance measuring mechanism to perform heat dissipation.

According to the second aspect of the present application, the present application provides a distance measuring device, including: a base; a driving mechanism arranged on the base; a distance measuring mechanism connected to the driving mechanism and used to drive the distance measuring device The mechanism rotates around a preset axis of rotation; wherein, the distance measuring device further includes a heat conduction part, the heat conduction part is arranged on the base, and the heat conduction part cooperates with the base to make the distance measuring device and the outside heat exchange.

According to the third aspect of the present application, the present application provides a movable platform, including: a fuselage; and the distance measuring device of the first aspect of the present application, which is arranged on the fuselage.

According to the fourth aspect of the present application, the present application provides a movable platform, including: a fuselage; and the distance measuring device of the second aspect of the present application, which is arranged on the fuselage.

The embodiments of the present application provide a distance measuring device and a movable platform. By arranging at least part of the heat dissipation structure in the gap between the radio frequency board assembly and the digital board assembly, the heat dissipation effect of the distance measuring device is improved, thereby improving the distance measurement. The reliability of the operation of the device extends the service life of the distance measuring device.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a distance measuring device provided by an embodiment of the present application;

2 is a schematic diagram of a partial structure of a distance measuring device provided by an embodiment of the present application;

Figure 3 is a cross-sectional view of a distance measuring device provided by an embodiment of the present application;

4 is an exploded schematic diagram of a distance measuring device provided by an embodiment of the present application;

FIG. 5 is a partial structural diagram of a distance measuring device provided by an embodiment of the present application, in which a digital board frame body and a first disturbance element are shown;

FIG. 6 is a schematic diagram of a partial structure of a distance measuring device provided by an embodiment of the present application, in which a radio frequency board frame body and a second disturbance element are shown;

Fig. 7 is a partial enlarged schematic diagram of the distance measuring device in Fig. 2 at A;

Fig. 8 is a partial enlarged schematic diagram of the distance measuring device in Fig. 3 at B;

FIG. 9 is a partial structural diagram of a distance measuring device provided by an embodiment of the present application, in which a first base body and a heat conducting component are shown;

FIG. 10 is a schematic structural diagram of a first base body provided by an embodiment of the present application;

FIG. 11 is a partial structural diagram of a distance measuring device provided by an embodiment of the present application, in which a second base body and a heat dissipation component are shown;

FIG. 12 is a schematic structural diagram of a second base body provided by an embodiment of the present application;

FIG. 13 is a schematic diagram of a movable platform provided by an embodiment of the present application.

Description of reference signs:

10. Ranging device;

100. Ranging mechanism;

110. Radio frequency board assembly; 111, radio frequency board; 112, radio frequency board frame; 120, digital board assembly; 121, digital circuit board; 122, digital board frame; 130, gap;

200. Heat dissipation structure; 210. Disturbing part; 211. First disturbance part; 212. Second disturbance part;

220. Heat dissipation member; 221. Heat dissipation tooth part; 222. Connection part; 223. Disturbance part;

230. Heat conduction parts; 240. Heat dissipation parts; 250. Heat dissipation fins; 260. Heat dissipation elements; 261. Contact parts; 262. Protruding parts;

300. Drive mechanism; 400, base; 410, first seat; 420, second seat; 500, protective cover; 510, containing space; 511, gap; 512, gas channel; 513, arrow; 600, air supply Device; 700, seals;

1000. Movable platform; 20. Body.

Detailed ways

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

It should also be understood that the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in the specification of this application and the appended claims, unless the context clearly indicates other circumstances, the singular forms "a", "an" and "the" are intended to include plural forms.

It should be further understood that the term "and/or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations .

The inventor of this application found that in order to ensure the safety of the drone's flight and operation, the drone can be equipped with radar and other ranging equipment to detect the distance between the drone and obstacles during flight, so that the drone can be timely Perform obstacle avoidance operations. However, the heat generated by the radar during operation is high, which easily causes the temperature of the radar to rise, exceeding the upper limit of its stable working temperature, which will reduce the reliability of the radar operation.

In response to this discovery, the inventor of the present application has improved the distance measuring device to improve the heat dissipation effect of the distance measuring device, thereby improving the operating reliability of the distance measuring device and prolonging the service life of the distance measuring device. Specifically, the present application provides a distance measuring device, including: a distance measuring mechanism, which can rotate around a preset rotation axis under the action of an external force; the distance measuring mechanism includes a radio frequency board assembly and a digital circuit board assembly, The radio frequency board assembly and the digital circuit board assembly are spaced apart to form a gap; a heat dissipation structure, at least part of the heat dissipation structure is provided in the gap; wherein, at least part of the heat dissipation structure can follow the distance measurement mechanism The rotation disturbs the air in the gap to dissipate heat.

The present application also provides a distance measuring device, including: a base; a driving mechanism arranged on the base; a distance measuring mechanism connected to the driving mechanism and used for driving the distance measuring mechanism to rotate around a preset rotation axis; wherein The distance measuring device further includes a heat conduction component provided on the base, and the heat conduction component cooperates with the base to enable the distance measuring device to exchange heat with the outside.

The present application also provides a movable platform, including: a fuselage; and any of the above-mentioned distance measuring devices, arranged on the fuselage.

Hereinafter, some embodiments of the present application will be described in detail with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Referring to FIG. 1, an embodiment of the present application provides a distance measuring device 10, which can be used in a movable platform. During the movement or operation of the movable platform, the distance measuring device 10 can detect the distance and/or direction of the movable platform from the obstacle and other detection objects during the movement or operation, so that the movable platform can perform operations such as obstacle avoidance in time. Among them, the movable platform may include at least one of unmanned aerial vehicles, unmanned vehicles, unmanned ships, and robots.

Exemplarily, the distance measuring device 10 can detect the distance between the distance measuring device 10 and the distance measuring device 10 by measuring the time of light propagation between the distance measuring device 10 and the probe, that is, the time-of-flight (TOF). the distance. Understandably, the distance measuring device 10 can also detect the distance between the probe and the distance measuring device 10 through other technologies, such as a distance measurement method based on frequency shift measurement, or a measurement based on phase shift (phase shift). There are no restrictions on the distance measurement method, etc.

In some embodiments, the distance measuring device 10 may be configured to use a radar device to detect the detection object, and/or to determine the distance and/or direction of the detection object. Of course, in other embodiments, the distance measuring device 10 may also be configured to use other distance measuring equipment such as a sonar device to detect the probe, and/or determine the distance and/or direction of the probe.

Please refer to FIGS. 2 to 4, the distance measuring device 10 includes a distance measuring mechanism 100 and a heat dissipation structure 200. The distance measuring mechanism 100 can rotate around a preset rotation axis under the action of an external force. The distance measuring mechanism 100 includes a radio frequency board assembly 110 and a digital board assembly 120. The radio frequency board assembly 110 and the digital board assembly 120 are spaced apart to form a gap 130. At least part of the heat dissipation structure 200 is disposed in the gap 130. Wherein, at least part of the heat dissipation structure 200 can disturb the air in the gap 130 with the rotation of the distance measuring mechanism 100 to perform heat dissipation.

In the distance measuring device 10 provided by the embodiment of the present application, at least a part of the heat dissipation structure 200 is arranged in the gap 130 between the radio frequency board assembly 110 and the digital board assembly 120, and the distance measuring mechanism 100 is rotated while being driven in the gap 130 At least part of the heat dissipation structure 200 fully disturbs the air in the gap 130, thereby enhancing the convective heat exchange between the air in the gap 130 and the distance measuring device 10, and improving the heat dissipation effect of the distance measuring device 10, thereby improving the reliable operation of the distance measuring device 10 It can extend the service life of the distance measuring device 10; the structure is simple.

Understandably, the preset rotation axis can be a real axis or an imaginary axis. When the preset rotation axis is a real axis, the distance measurement mechanism 100 can rotate relative to the preset rotation axis; or, the distance measurement mechanism 100 rotates along with the preset rotation axis.

In some embodiments, at least part of the heat dissipation structure 200 is provided on the digital board assembly 120 and/or the radio frequency board assembly 110. Specifically, the part of the heat dissipation structure 200 that is arranged in the gap 130 may be only arranged on the digital board assembly 120 or only on the radio frequency board assembly 110; of course, it can also be arranged on the digital board assembly 120 and the radio frequency board assembly at the same time. 110 on. When the digital board assembly 120 and the radio frequency board assembly 110 are both provided with a part of the heat dissipation structure 200, the heat dissipation structure 200 provided on the digital board assembly 120 and the heat dissipation structure 200 provided on the radio frequency board assembly 110 will follow the test. The rotation of the distance mechanism 100 sufficiently disturbs the air in the gap 130, thereby further enhancing the convective heat exchange between the air in the gap 130 and the distance measuring device 10, and further improving the heat dissipation effect of the distance measuring device 10.

Please refer to FIGS. 2 to 4, in some embodiments, the heat dissipation structure 200 includes a disturbance element 210. The disturbance element 210 is connected to the distance measuring mechanism 100 and is located in the gap 130. Specifically, the disturbance element 210 is connected to the digital board assembly 120 or the radio frequency board assembly 110. While the distance measuring mechanism 100 rotates, the disturbance element 210 is driven to fully disturb the air in the gap 130, thereby enhancing the convective heat exchange between the air in the gap 130 and the distance measuring device 10, and improving the heat dissipation effect of the distance measuring device 10.

In some embodiments, the extension direction of the perturbation element 210 is arranged at an angle with the preset rotation axis. Specifically, an included angle is formed between the extending direction of the disturbance element 210 and the preset rotation axis of the distance measuring mechanism 100, that is, the two are not parallel to each other, so that the disturbance element 210 can spirally cut the air in the gap 130, which helps Disturb the air sufficiently.

In some embodiments, the included angle α between the extending direction of the perturbing element 210 and the preset rotation axis is 15°-75°, that is, 15°, 30°, 40°, 45°, 50°, 60°, 75° And any other suitable angles between 15°-75°. Specifically, the upper limit value helps to ensure the disturbance effect, and the lower limit value helps to reduce the rotation resistance, achieves a balance between reducing heat generation and increasing heat dissipation, and helps to improve the distance measuring device 10 The heat dissipation effect can improve the working reliability and prolong the service life. Specifically, the extension direction of the disturbance element 210 is different from the preset rotation axis of the distance measuring mechanism 100, that is, the two are not on the same plane. Therefore, in FIG. 2, after the preset rotation axis R of the distance measuring mechanism 100 is moved to the plane where the extension direction of the disturbance element 210 is located, the angle α between the two is marked.

Referring to FIGS. 5 and 6, in conjunction with FIGS. 2 to 4, in some embodiments, the radio frequency board assembly 110 is provided with a perturbation element 210; and/or, the digital board assembly 120 is provided with a perturbation element 210. Specifically, the perturbation element 210 may be provided only on the radio frequency board assembly 110, or only the perturbation element 210 may be provided on the digital board assembly 120. Of course, the perturbation member 210 can also be respectively provided on the radio frequency board assembly 110 and the digital board assembly 120 to fully cut the air in the gap 130 and improve the disturbance of the air in the gap 130, thereby enhancing the heat dissipation effect.

Please refer to FIG. 2, FIG. 4, FIG. 5, and FIG. 6, for example, the perturbing element 210 includes a first perturbing element 211 and a second perturbing element 212. The first disturbance element 211 is disposed on the digital board assembly 120. The second disturbance element 212 is disposed on the radio frequency board assembly 110. The first included angle between the extension direction of the first perturbation element 211 and the preset shaft is α1, the second included angle between the extension direction of the second perturbation element 212 and the preset shaft is α2, and the first included angle α1 is equal to α1. The second included angle α2 is the same, and the extending direction of the first perturbing element 211 and the extending direction of the second perturbing element 212 intersect. In this way, when the distance measuring mechanism 100 rotates, the first perturbing element 211 and the second perturbing element 212 can be aligned. The air in the gap 130 performs the same spiral cutting, which helps to fully disturb the air.

Understandably, in other embodiments, the first included angle α1 and the second included angle α2 may also be different, which is not limited herein.

Referring to FIGS. 5 and 6, in some embodiments, the radio frequency board assembly 110 and/or the digital board assembly 120 are each provided with at least two perturbing elements 210, and the at least two perturbing elements 210 are arranged at intervals.

Referring to FIG. 5, in some embodiments, the number of the first perturbing element 211 includes at least two, and the at least two first perturbing elements 211 are spaced apart. By increasing the number of the first perturbing elements 211 and making the first perturbing elements 211 spaced apart, the air in the gap 130 can be fully cut, the disturbance of the air in the gap 130 can be improved, and the heat dissipation effect can be improved. Exemplarily, the first perturbing elements 211 are arranged at equal intervals, which helps to maintain the perturbation balance.

Please refer to FIG. 6, in some embodiments, the number of the second perturbing element 212 includes at least two, and the at least two second perturbing elements 212 are arranged at intervals. By increasing the number of the second perturbing elements 212 and making the second perturbing elements 212 spaced apart, the air in the gap 130 can be fully cut, and the disturbance of the air in the gap 130 can be improved, which helps to improve the heat dissipation effect. Exemplarily, the second disturbance elements 212 are arranged at equal intervals, which helps to maintain the disturbance balance. The number of the first perturbing element 211 and the number of the second perturbing element 212 may be different or the same, which is not limited here.

Referring to FIGS. 3 and 4, in some embodiments, the radio frequency board assembly 110 includes a radio frequency board 111 and a radio frequency board frame 112, and the radio frequency board 111 is disposed on the radio frequency board frame 112. The digital board assembly 120 includes a digital circuit board 121 and a digital board frame 122, and the digital circuit board 121 is disposed on the digital board frame 122. The radio frequency board holder body 112 and the digital board holder body 122 can rotate under the action of external force. The distance measuring device 10 includes components, such as electronic components provided on the radio frequency board 111 or the digital circuit board 121. The components generate heat during operation. The heat dissipation structure 200 can dissipate the heat generated by the components in time to ensure the normal operation of the distance measuring device 10.

The gap 130 is formed by the digital board frame 122 and the radio frequency board frame 112 being spaced apart. The width of the gap 130 is the distance between the digital board frame 122 and the radio frequency board frame 112. The width of the gap 130 can be designed according to actual requirements. The width of the gap 130 between the digital board frame 122 and the radio frequency board frame 112 is 30mm-80mm, such as 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 45mm, 50mm, 60mm, 70mm, 80mm, and 30mm-80mm Any other suitable value between, the larger the gap 130 is, the better the heat dissipation. The gap 130 facilitates the dissipation of heat on the digital board frame 122 and the radio frequency board frame 112. In other embodiments, the gap 130 between the digital board frame 122 and the radio frequency board frame 112 is related to the structural design of the motor, and is not limited herein.

In some embodiments, the ranging mechanism 100 further includes a transmitting antenna and a receiving antenna. The transmitting antenna is used to transmit the transmitting signal. The transmission signal may include at least one of electromagnetic waves, optical signals, and the like. The receiving antenna is used to receive the echo signal returned by the transmitted signal. The transmitting antenna and the receiving antenna are connected to the radio frequency board 111 respectively. The transmitted signal is scattered by the probe in the target area, and the echo signal scattered by the probe is received by the receiving antenna. The digital circuit board 121 can process the echo signal.

Exemplarily, the transmitting antenna and the receiving antenna are arranged on the radio frequency board 111.

Exemplarily, the transmission antenna transmits the transmission signal. The transmitted signal is scattered by the probe in the target area, the receiving antenna receives the echo signal scattered by the probe, and the radio frequency board 111 transmits the echo signal to the digital circuit board 121. The digital circuit board 121 can process the echo signal sent by the radio frequency board 111.

Please refer to FIGS. 2 to 4. In some embodiments, the distance measuring device 10 further includes a driving mechanism 300. The driving mechanism 300 is connected to the distance measuring mechanism 100 and is used for driving the distance measuring mechanism 100 to rotate around a preset rotation axis. Specifically, the driving mechanism 300 can drive the radio frequency board assembly 110 and the digital board assembly 120 to rotate. Specifically, the driving mechanism 300 includes a motor, which can drive the radio frequency board assembly 110 and the digital board assembly 120 to rotate.

Exemplarily, the driving mechanism 300 includes a first coupling portion and a second coupling portion, and the digital board frame 120 is fastened to the first coupling portion by fasteners such as screws. The radio frequency board frame 112 is fastened to the second coupling part by fasteners such as screws, so that the driving mechanism 300 can drive the radio frequency board assembly 110 and the digital board assembly 120 to rotate. Of course, the driving mechanism 300 can also be connected to the radio frequency board assembly 110 and the digital board assembly 120 through other connection methods such as adhesive connection, which is not limited herein.

Please refer to FIGS. 2 to 4. In some embodiments, the distance measuring device 10 further includes a base 400. The driving mechanism 300 is provided on the base 400.

Please refer to FIGS. 1 to 4. In some embodiments, the distance measuring device 10 further includes a protective cover 500. The protective cover 500 cooperates with the base 400 to form an accommodating space 510, and at least part of the distance measuring mechanism 100 is disposed in the accommodating space 510. Specifically, the digital board assembly 120 and the radio frequency board assembly 110 are arranged in the accommodating space 510.

Please refer to FIGS. 2 to 4, in some embodiments, the base 400 includes a first base 410 and a second base 420. The first seat body 410 is connected to the driving mechanism 300. The second base body 420 is connected to the first base body 410. Specifically, the second seat body 420 cooperates with the protective cover 500 to form an accommodating space 510. The first seat body 410 may be connected to the second seat body 420 by any suitable connection method, for example, the first seat body 410 is connected to the second seat body 420 by a fastener such as a screw.

Referring to FIGS. 2 and 3, in some embodiments, the radio frequency board assembly 110 and the digital board assembly 120 separate the receiving space 510 to form a gap 130 and a gap 511 communicating with the gap 130.

Referring to FIGS. 7 and 8, in conjunction with FIGS. 2 to 6, in some embodiments, the heat dissipation structure 200 further includes a heat dissipation member 220. The heat dissipation member 220 is connected to the distance measuring mechanism 100, and is used to guide the air in the gap 130 to the vicinity of the outer surface of the distance measuring mechanism 100 to accelerate the heat radiation inside the distance measuring device 10, so that the components that rely on internal radiation to cool down are better. The large cooling effect improves the heat dissipation efficiency of the distance measuring device 10. Specifically, when the distance measuring mechanism 100 rotates, the heat dissipation member 220 can guide the air in the gap 130 to the gap 511, and remove the heat from the surface of the digital circuit board 121 and/or the radio frequency board 111 through the air flow, so as to achieve heat dissipation. Purpose.

Referring to FIGS. 7 and 8, in conjunction with FIGS. 2 and 3, in some embodiments, the radio frequency board assembly 110 and/or the digital board assembly 120 forms a gas channel 512 communicating with the gap 130 through the heat dissipation member 220 and the base 400. The radio frequency board frame 112 and/or the digital board frame 122 form a gas channel 512 with the base 400 through the heat dissipation member 220. Specifically, the heat dissipation member 220 may be provided only on the radio frequency board frame 112, or the heat dissipation member 220 may be provided only on the digital board frame 122. Of course, heat dissipation members 220 can also be provided on the radio frequency board frame 112 and the digital board frame 122 at the same time to increase the air circulation between the gap 130 and the gap 511 and improve the heat dissipation effect.

The number of heat dissipation members 220 can be set according to actual requirements, for example, one, two, three, four or more. At least two heat dissipation members 220 are provided on the radio frequency board assembly 110 and/or the digital board assembly 120, and the at least two heat dissipation members 220 are arranged at intervals. Exemplarily, two heat dissipation members 220 are provided on the radio frequency board assembly 110 and the digital board assembly 120 respectively. The two heat dissipation members 220 on the radio frequency board assembly 110 are arranged at intervals, and the two heat dissipation members 220 on the digital board assembly 120 are arranged at intervals. Under the premise of ensuring that the air in the gap 130 is led to the gap 511, the gas can be fully cut. The air in the channel 512 increases the disturbance of the air in the air channel 512, thereby enhancing the heat dissipation effect.

2 and 3, in some embodiments, the end of the radio frequency board assembly 110 facing away from the base 400 is spaced apart from the protective cover 500, and the end of the digital board assembly 120 facing away from the base 400 is spaced apart from the protective cover 500. In this way, when the distance measuring mechanism 100 rotates, the air in the gap 511 can enter the gap 130 through the gap between the protective cover 500 and the end of the distance measuring mechanism 100 away from the base 400, and the air in the gap 130 can enter the gap through the gas channel 512. 511, so that air can circulate between the gap 130 and the gap 511, which improves the heat dissipation effect. Please refer to FIG. 3 and FIG. 7, the direction pointed by the straight arrow 513 is the direction of air flow when the distance measuring mechanism 100 rotates.

Referring to FIGS. 5 to 8, in some embodiments, the heat dissipation member 220 includes heat dissipation teeth 221. The heat-dissipating tooth portion 221 is provided at one end of the radio frequency board assembly 110 and/or the digital board assembly 120 facing the base 400.

The number of the heat dissipation teeth 221 is multiple, and the plurality of heat dissipation teeth 221 are arranged at intervals. Specifically, the number of heat dissipation teeth 221 can be set according to actual requirements, for example, two, three, four or more. The interval between the heat dissipation teeth 221 and/or the interval between the heat dissipation members 220 form a gas channel 512, so that the air in the gap 130 can flow into the gap 511, and the plurality of heat dissipation teeth 221 can fully cut the gas The air in the channel 512 increases the turbulence of the air in the gas channel 512 and accelerates the heat radiation inside the distance measuring device 10, thereby improving the heat dissipation effect.

In some embodiments, the extending direction of the heat dissipation tooth portion 221 is substantially perpendicular to the predetermined rotation axis. The extending direction of the heat dissipation tooth 221 is substantially perpendicular to the radio frequency board assembly 110 and/or the digital board assembly 120. In this way, when the distance measuring mechanism 100 rotates, the heat-dissipating teeth 221 can cut the air in the air channel 512, which helps to fully disturb the air and enables the air in the gap 130 to flow smoothly to the gap 511.

Referring to FIGS. 5 to 8, in some embodiments, the heat dissipation member 220 further includes a connecting portion 222 and a disturbance portion 223. The connecting portion 222 is connected to the heat dissipation tooth portion 221. The disturbance portion 223 and the heat dissipation tooth portion 221 are provided on opposite sides of the connecting portion 222. The disturbance portion 223 is provided in the gap 130. The disturbance part 223 can disturb the air in the gap 130 with the rotation of the distance measuring mechanism 100, thereby enhancing the convective heat exchange between the air in the gap 130 and the distance measuring device 10, accelerating the heat radiation inside the distance measuring device 10, and improving the heat dissipation effect.

In order to better illustrate the inventive concept of the embodiments of the present application, the heat dissipation member 220 provided on the radio frequency board frame 112 is taken as an example for description. Specifically, the heat dissipation tooth 221 is connected to an end of the radio frequency board frame 112 facing the base 400. The connecting portion 222 and the disturbing portion 223 are connected to the surface of the radio frequency board frame 112 facing the gap 130. The heat dissipation teeth 221 and the disturbance part 223 are both connected to the connection part 222 and the radio frequency board frame 112 to increase the structural reliability of the heat dissipation teeth 221 and the disturbance part 223.

In some embodiments, the extending direction of the disturbance portion 223 is arranged at an angle with the preset rotation axis, that is, the two are not parallel to each other, so that the disturbance portion 223 can spirally cut the air in the gap 130, which helps to fully disturb the air. .

The angle between the extension direction of the disturbance portion 223 and the preset rotation axis is 15°-75°, that is, 15°, 30°, 40°, 45°, 50°, 60°, 75°, and 15°-75°. Any other suitable angles between. Specifically, the upper limit value helps to ensure the disturbance effect, and the lower limit value helps to reduce the rotation resistance, achieves a balance between reducing heat generation and increasing heat dissipation, and helps to improve the distance measuring device 10 The heat dissipation effect can improve the working reliability and prolong the service life. Specifically, the extension direction of the disturbance portion 223 is different from the preset rotation axis of the distance measuring mechanism 100. In some embodiments, the extending direction of the perturbing part 223 is the same as the extending direction of the perturbing element 210. The perturbing part 223 and the perturbing element 210 jointly spirally cut the air in the gap 130, which helps to fully disturb the air; at the same time, it can reduce The resistance of the disturbance member 210 during the rotation.

Referring to FIGS. 5 to 8, in some embodiments, the extending direction of the perturbing portion 223 and the extending direction of the heat dissipating tooth portion 221 are arranged at an acute angle, so that the perturbing portion 223 can sufficiently disturb the air in the gap 130 and can ensure the gap The air in 130 can flow to the gap 511 through the gas channel 512.

Both the perturbation member 210 and the heat dissipation member 220 can be integrally formed with the radio frequency frame without additional process flow and processing efficiency is not affected. At the same time, the integrated structure can improve the strength and help prolong the service life of the product. The radio frequency board body 112 may be made of a material with a high thermal conductivity, such as a metal material or a non-metal material, which is beneficial to strengthen heat dissipation. The metal material may be metallic aluminum, metallic copper, aluminum alloy, or copper alloy. The non-metallic material may be graphite or the like. When the perturbation element 210 and the heat dissipation member 220 are integrally formed with the radio frequency board frame 112, their materials are also the same as the radio frequency board frame 112.

Please refer to FIG. 2 to FIG. 4 and FIG. 9. In some embodiments, the heat dissipation structure 200 further includes a heat conducting component 230. The heat conduction component 230 is arranged on the base 400, and the heat conduction component 230 cooperates with the base 400 to allow the distance measuring device 10 to exchange heat with the outside, so as to improve the heat dissipation effect of the distance measuring device 10. In addition, the heat conduction component 230 can also accelerate the heat radiation inside the distance measuring device 10, so that components that rely on internal radiation to cool down can obtain a greater cooling effect.

Specifically, the arrangement of the heat conduction member 230 can increase the contact area between the base 400 and the accommodation space 510, so that the heat of the air in the accommodation space 510 can be fully conducted to the base 400, and the base 400 exchanges heat with the outside world, thereby measuring the distance. Even if the heat generated by the mechanism 100 is dissipated, the purpose of heat dissipation is realized.

Please refer to FIG. 2 and FIG. 3, FIG. 9 and FIG. 10. In some embodiments, the heat conducting component 230 is provided on the side of the base 400 facing the distance measuring mechanism 100. Specifically, the heat conducting component 230 is provided on the first base body 410. The second seat body 420 is disposed on a side of the first seat body 410 away from the heat conducting component 230. The heat of the air in the accommodating space 510 can be conducted to the first seat body 410 through the heat conduction member 230, and the first seat body 410 conducts the heat to the second seat body 420 to exchange heat with the outside, thereby achieving heat dissipation.

The shape of the heat conducting component 230 can be designed according to actual requirements, such as a sheet shape, a column shape, an arc shape, etc., which is not limited herein.

In some embodiments, the extending direction of the heat conducting member 230 is substantially perpendicular to the predetermined rotation axis. Specifically, the length extension direction of the heat conducting member 230 is substantially perpendicular to the preset rotation axis of the distance measuring mechanism 100.

In some embodiments, the number of thermally conductive components 230 is multiple, and the multiple thermally conductive components 230 are arranged in an array. Specifically, a plurality of heat conducting components 230 are arranged in an array on a side surface of the first base body 410 facing the accommodating space 510.

Please refer to FIG. 9, in some embodiments, at least part of the plurality of heat conducting components 230 are arranged at intervals along the circumference of the predetermined rotating shaft. Specifically, the plurality of heat conduction parts 230 may be arranged in an interval array to form a plurality of sub-arrays of the heat conduction parts 230 arranged in a ring shape. Each heat conduction component 230 sub-array includes a plurality of heat conduction components 230. The plurality of heat conduction parts 230 in each heat conduction part 230 sub-array are arranged at intervals along the circumference of the preset rotating shaft.

In some embodiments, the heat conduction component 230 and the first base body 410 are integrally formed and arranged without additional process flow, and processing efficiency is not affected. At the same time, the integrated structure can increase the strength, which is beneficial to prolong the service life of the product. The heat conducting component 230 and the first seat body 410 may be made of materials with higher thermal conductivity, such as metallic materials or non-metallic materials, which is beneficial to enhance heat dissipation. The metal material may be metallic aluminum, metallic copper, aluminum alloy, or copper alloy. The non-metallic material may be graphite or the like.

Please refer to FIG. 2 and FIG. 3, FIG. 11 and FIG. 12, in some embodiments, the heat dissipation device further includes a heat dissipation component 240. The heat dissipation component 240 is connected to the base 400 and is arranged on the side of the base 400 away from the gap 130 to increase the contact area with the outside, accelerate the heat dissipation on the base 400 and improve the heat dissipation effect of the distance measuring device 10. Specifically, the heat dissipation member 240 is provided on a side of the second seat body 420 away from the gap 130.

Referring to FIG. 11, in some embodiments, the number of heat dissipation components 240 is multiple, and the plurality of heat dissipation components 240 are arranged radially around the preset rotation axis of the distance measuring mechanism 100 to increase the heat dissipation area and improve heat dissipation. Effect. The heat dissipation component 240 may be integrally formed with the second base body 420, or may be provided separately, which is not limited here.

Please refer to FIGS. 2 to 4. In some embodiments, the distance measuring device 10 further includes a blowing device 600. The air blowing device 600 is arranged on the side of the base 400 away from the gap 130. Specifically, the air blowing device 600 is provided on a side of the second base 400 away from the gap 130. The blowing device 600 may be a fan or the like. The cold air in the external environment is blown or sucked into the second base 400 to improve the fluidity of the cold air around the second base 400 and improve the heat dissipation effect. Specifically, the air blowing device 600 can blow or suck cold air in the external environment into the heat dissipation component 240 array formed by the plurality of heat dissipation components 240, so as to improve the fluidity of the cold air in the ventilation channels in the heat dissipation component 240 array. Therefore, the heat dissipation on the base 400 is accelerated, a better cooling effect is achieved, and the heat dissipation effect of the distance measuring device 10 is improved.

Referring to FIGS. 1 to 4, in some embodiments, the heat dissipation structure 200 further includes heat dissipation fins 250. The heat dissipation fins 250 are provided on the outer surface of the protective cover 500 to increase the heat dissipation area. Since the air in the accommodating space 510 or the base 400 can exchange heat with the protective cover 500, the heat of the air in the accommodating space 510 and/or the heat on the base 400 can be conducted to the outside through the protective cover 500. The arrangement of the heat dissipation fins 250 can increase the heat dissipation area and improve the heat dissipation effect of the distance measuring device 10. The heat dissipation fin 250 is easy to process, and has a large surface area and a large heat dissipation area. It can be understood that, in other embodiments, the heat dissipation fin 250 may also be configured as a columnar heat-conducting tooth, a tubular heat-conducting tooth, or the like.

Please refer to FIG. 1 and FIG. 4. In some embodiments, the heat dissipation fins 250 are arranged to radiate outward with the preset rotation axis of the distance measuring mechanism 100 as the axis. Of course, the heat dissipation fins 250 can also be arranged to radiate outward with any other suitable axis.

It is understandable that the heat dissipation fins 250 can be integrally formed with the protective cover 500, or can be provided separately, which is not limited here.

Please refer to FIG. 3. In some embodiments, the distance measuring device 10 further includes a sealing member 700. The sealing member 700 is provided at the connection between the protective cover 500 and the base 400. Specifically, the seal 700 is provided at the connection between the protective cover 500 and the second base 420, and the seal 700 can prevent impurities such as water or dust from entering the containing space 510 from the connection between the protective cover 500 and the second base 420, thereby The waterproof and dustproof effect of the distance measuring device 10 is ensured. The heat dissipation structure 200 can dissipate the heat generated during the operation of the distance measuring device 10 in time. Therefore, the distance measuring device 10 of the embodiment of the present application can take into account the heat dissipation effect and the waterproof and dustproof performance, improve product performance and market competitiveness, and expand the application range of the distance measuring device 10. The seal 700 may be a member made of rubber and other materials with waterproof and dustproof effects.

Please refer to FIGS. 2 to 4. In some embodiments, the heat dissipation structure 200 further includes a heat dissipation element 260. The heat dissipation element 260 is connected to the digital board assembly 120 and is arranged on a side of the digital board assembly 120 away from the gap 130. Specifically, the heat dissipation element 260 is connected to the digital circuit board 121, and the heat dissipation element 260 can contact a predetermined area of the digital circuit board 121 to dissipate heat in the predetermined area through the heat dissipation element 260. Specifically, the preset area of the digital circuit board 121 is provided with preset components that generate more heat, and the heat dissipation element 260 can contact the preset components in the preset area and pass at least part of the heat of the preset components. The heat dissipation element 260 is conducted into the air at the gap 511 to prevent the temperature of the preset components from being too high to affect the normal operation of the distance measuring device 10, thereby improving the heat dissipation effect of the distance measuring device 10 and improving the reliability of the operation of the distance measuring device 10, The service life of the distance measuring device 10 is extended.

In some embodiments, the heat dissipation element 260 is provided separately from the digital circuit board 121, and it can be locked on the digital circuit board 121 by screws or other connectors.

Please refer to FIGS. 2 to 4. In some embodiments, the heat dissipation element 260 includes a contact portion 261 and a protruding portion 262, and the contact portion 261 is connected to the digital board assembly 120. The number of protruding portions 262 is at least two. The plurality of protruding portions 262 are spaced apart on the side of the contact portion 261 away from the digital board assembly 120, and the protruding portions 262 cooperate with the contact portion 261 to dissipate at least part of the heat on the digital board assembly 120. Specifically, the contact portion 261 is locked on the digital circuit board 121 by a connecting member such as screws. In addition, at least a part of the contact portion 261 is in contact with the preset component at the preset area of the digital circuit board 121 to conduct the heat of the preset component to the contact portion 261, thereby accelerating the heat dissipation of the preset component. The protruding portion 262 can increase the heat dissipation area and improve the heat dissipation effect.

Exemplarily, when the distance measuring device 10 starts to work, at least one of the disturbance element 210, the heat dissipation member 220, or the heat conduction component 230 can accelerate the radiation rate of the internal components of the distance measuring device 10 in the distance measuring device 10, At the same time, in order to accelerate the internal radiation rate and the uniform distribution of heat, when the distance measuring mechanism 100 rotates, it will drive the air flow in the accommodation space 510, so that the heat of the components in the distance measuring device 10 can be more evenly distributed inside the distance measuring device 10 Distribution to prevent local temperature from being too high. In addition, the heat in the accommodating space 510 can be radiated to the external environment through at least one of the heat conduction member 230, the base 400, and the heat dissipation member 240. When the air blowing device 600 is in operation, it can continuously blow the normal temperature wind in the external environment to the heat dissipation component 240, so that the heat dissipation efficiency of the heat dissipation component 240 is improved, thereby achieving a good cooling effect. Therefore, through the heat dissipation structure 200 of the embodiment of the present application, the distance measuring device can be made to be relatively small in size and relatively closed inside, thereby improving the heat dissipation effect of the distance measuring device 10 and improving the reliability of the operation of the distance measuring device 10, The service life of the distance measuring device 10 is extended.

An embodiment of the present application also provides a distance measuring device 10, which includes a base 400, a driving mechanism 300, a distance measuring mechanism 100, and a heat conducting component 230. The driving mechanism 300 is provided on the base 400. The distance measuring mechanism 100 is connected to the driving mechanism 300 and is used for driving the distance measuring mechanism 100 to rotate around a preset rotation axis. The heat conducting component 230 is arranged on the base 400, and the heat conducting component 230 cooperates with the base 400 to enable the distance measuring device 10 to exchange heat with the outside.

In the distance measuring device 10 of the embodiment of the present application, the distance measuring device 10 exchanges heat with the outside through the cooperation of the heat conducting component 230 and the base 400. In addition, the heat conduction component 230 can also accelerate the heat radiation inside the distance measuring device 10, so that components that rely on internal radiation to cool down can obtain a greater cooling effect. Thereby, the heat dissipation effect of the distance measuring device 10 is improved, the reliability of the operation of the distance measuring device 10 is improved, and the service life of the distance measuring device 10 is prolonged; the structure is simple.

Referring to FIG. 13, an embodiment of the present application also provides a movable platform 1000, including a body 20 and the distance measuring device 10 in any of the above embodiments. The distance measuring device 10 is installed on the body 20. The distance measuring device 10 has good heat dissipation effect and stable working performance. A support arm is provided on the fuselage 20, and a propeller is provided on the support arm. The rotation of the propeller controls the flying of the movable platform 1000. The mobile platform 1000 can be used to perform tasks such as aerial photography, transportation, monitoring, exploration, search and rescue, and has high target detection accuracy and good stability. The movable platform 1000 may also include other components, which are not limited in the present invention. The other components may include, for example, an engine, a control system, and a function cabin. The engine provides a power source to start and stop the movable platform 1000, and the control system implements the ground The platform controls the operation of the mobile platform 1000, and the function warehouse can be used to collect and transmit information and data.

Among them, the movable platform 1000 may include at least one of an unmanned aerial vehicle, an unmanned vehicle, an unmanned ship, and a robot.

The embodiments of the present application provide a distance measuring device and a movable platform. By arranging at least part of the heat dissipation structure in the gap between the radio frequency board assembly and the digital board assembly, the distance measuring mechanism rotates while driving the distance measuring device to be arranged in the gap. At least part of the heat dissipation structure fully disturbs the air in the gap, thereby enhancing the convective heat exchange between the air in the gap and the distance measuring device, and improving the heat dissipation effect of the distance measuring device, thereby improving the operating reliability of the distance measuring device and extending the distance measuring device's performance. Service life.

The above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or changes within the technical scope disclosed in this application. Replacement, these modifications or replacements shall be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A distance measuring device, characterized in that it comprises:

A distance measuring mechanism, the distance measuring mechanism can be rotated around a preset axis of rotation under the action of an external force; the distance measuring mechanism includes a radio frequency board assembly and a digital board assembly, the radio frequency board assembly and the digital board assembly are spaced apart to form a gap ；

A heat dissipation structure, at least part of the heat dissipation structure is provided in the gap;

Wherein, at least part of the heat dissipation structure can disturb the air in the gap with the rotation of the distance measuring mechanism to perform heat dissipation.
The distance measuring device according to claim 1, wherein at least part of the heat dissipation structure is provided on the digital board assembly and/or the radio frequency board assembly.
The distance measuring device according to claim 1, wherein the heat dissipation structure comprises:

The disturbance element is connected with the distance measuring mechanism and is located in the gap.
The distance measuring device according to claim 3, wherein the extension direction of the disturbance element is set at an included angle with the preset rotation axis.
The distance measuring device according to claim 4, wherein the angle between the extension direction of the perturbation member and the preset rotation axis is 15°-75°.
The distance measuring device according to claim 3, wherein the perturbation element is provided on the radio frequency board assembly; and/or the perturbation element is provided on the digital board assembly.
The distance measuring device according to claim 6, wherein the radio frequency board assembly and/or the digital board assembly are both provided with at least two perturbing elements, and at least two perturbing elements are arranged at intervals.
The distance measuring device according to claim 1, wherein the distance measuring device further comprises:

The driving mechanism is connected with the distance measuring mechanism and is used for driving the distance measuring mechanism to rotate around the preset rotation axis.
The distance measuring device according to claim 8, wherein the distance measuring device further comprises:

The base, the driving mechanism is arranged on the base.
The distance measuring device according to claim 9, wherein the heat dissipation structure further comprises:

The heat dissipation member is connected with the distance measuring mechanism and is used for guiding the air in the gap to the vicinity of the outer surface of the distance measuring mechanism.
The distance measuring device according to claim 10, wherein the radio frequency board assembly and/or the digital board assembly form a gas channel communicating with the gap through the heat dissipation member and the base.
The distance measuring device according to claim 11, wherein the radio frequency board assembly and/or the digital board assembly are provided with at least two heat dissipation members, and at least two heat dissipation members are arranged at intervals.
The distance measuring device according to claim 10, wherein the heat dissipation member comprises:

The heat-dissipating tooth part is arranged at one end of the radio frequency board assembly and/or the digital board assembly facing the base.
The distance measuring device according to claim 13, wherein the extension direction of the heat dissipation tooth portion is substantially perpendicular to the predetermined rotation axis; and/or, the extension direction of the heat dissipation tooth portion is substantially perpendicular to the predetermined rotation axis. The radio frequency board assembly and/or the digital board assembly.
The distance measuring device according to claim 13, wherein the number of the heat dissipation teeth is multiple, and the multiple heat dissipation teeth are arranged at intervals.
The distance measuring device according to claim 13, wherein the heat dissipation member further comprises:

A connecting part connected to the heat dissipation tooth part;

A disturbance part and the heat dissipation tooth part are arranged on opposite sides of the connecting part and are arranged in the gap; the disturbance part can disturb the air in the gap with the rotation of the distance measuring mechanism .
The distance measuring device according to claim 16, wherein the extension direction of the perturbation portion and the extension direction of the heat dissipation tooth portion are arranged at an acute angle; Suppose the rotation axis is set at an included angle.
The distance measuring device according to claim 17, wherein the included angle between the extension direction of the perturbation part and the preset rotation axis is 15°-75°.
The distance measuring device according to claim 9, wherein the heat dissipation structure further comprises:

The heat conduction component is arranged on the base, and the heat conduction component cooperates with the base to enable the distance measuring device to exchange heat with the outside.
The distance measuring device according to claim 19, wherein the heat conduction member is provided on the side of the base facing the distance measuring mechanism; and/or the extension direction of the heat conduction member is the same as the preset The shafts are roughly perpendicular to each other.
22. The distance measuring device according to claim 20, wherein the number of the thermally conductive components is multiple, and the multiple thermally conductive components are arranged in an array.
22. The distance measuring device according to claim 21, wherein at least part of the plurality of heat conducting components are arranged at intervals along the circumferential direction of the preset rotating shaft.
The distance measuring device according to claim 19, wherein the heat dissipation structure further comprises:

The heat dissipation component is connected to the base and arranged on the side of the base away from the gap.
23. The distance measuring device according to claim 23, wherein the number of the heat dissipating parts is multiple, and the plurality of heat dissipating parts are arranged radially with the preset rotating shaft of the distance measuring mechanism as the center.
The distance measuring device according to claim 23, wherein the base comprises:

The first seat body is connected with the driving mechanism;

The second seat body is connected with the first seat body.
The distance measuring device according to claim 25, wherein the heat conduction member is provided on the first base body, and the heat dissipation member is provided on the second base body.
The distance measuring device according to claim 9, wherein the distance measuring device further comprises:

The air blowing device is arranged on the side of the base away from the gap.
The distance measuring device according to claim 9, wherein the distance measuring device further comprises:

The protective cover cooperates with the base to form an accommodating space, and at least part of the distance measuring mechanism is arranged in the accommodating space.
The distance measuring device according to claim 28, wherein the radio frequency board assembly and the digital board assembly separate the containing space to form the gap and a gap communicating with the gap.
The distance measuring device according to claim 28, wherein the heat dissipation structure further comprises:

The heat dissipation fins are arranged on the outer surface of the protective cover.
The distance measuring device according to claim 28, wherein the distance measuring device further comprises:

The seal is arranged at the connection between the protective cover and the base.
The distance measuring device according to claim 1, wherein the heat dissipation structure further comprises:

The heat dissipation element is connected to the digital board assembly, and is arranged on a side of the digital board assembly away from the gap.
The distance measuring device according to claim 32, wherein the heat dissipation element comprises:

The contact part is connected with the digital board assembly;

A plurality of protruding parts are arranged at intervals on a side of the contact part away from the digital board assembly, and the protruding parts cooperate with the contact part to dissipate at least part of the heat on the digital board assembly.
A distance measuring device, characterized in that it comprises:

Base

The driving mechanism is arranged on the base;

A distance measuring mechanism, connected to the driving mechanism, and used for driving the distance measuring mechanism to rotate around a preset rotation axis;

Wherein, the distance measuring device further includes a heat conduction component provided on the base, and the heat conduction component cooperates with the base to enable the distance measuring device to exchange heat with the outside.
A movable platform, characterized in that it comprises:

Fuselage; and

The distance measuring device according to any one of claims 1-33, which is arranged on the fuselage.
A movable platform, characterized in that it comprises:

Fuselage; and

The distance measuring device according to claim 34, which is provided on the body.