WO2022048566A1

WO2022048566A1 - Calibration device and calibration method

Info

Publication number: WO2022048566A1
Application number: PCT/CN2021/115990
Authority: WO
Inventors: 赖毕望
Original assignee: 深圳市道通科技股份有限公司
Priority date: 2020-09-03
Filing date: 2021-09-01
Publication date: 2022-03-10
Also published as: CN112033696A

Abstract

The embodiments of the present invention relate to the field of automobile detection. Disclosed are a calibration device and a calibration method. The calibration device comprises a bracket, a display apparatus and a light projection apparatus, wherein the bracket is used for bearing and mounting the display apparatus and the light projection apparatus; the display apparatus is provided with a mounting end and a free end, which are arranged opposite each other, the mounting end being connected to the bracket, and the free end being movable relative to the mounting end; and the light projection apparatus is used for projecting light to a flexible display member to form a set pattern, so as to assist the calibration of a sensor to be detected on a vehicle to be detected, the set pattern, which is used for calibrating said vehicle, of the calibration device is not formed by means of ink printing, but is formed by means of the light projection apparatus projecting light to the flexible display member. Therefore, the calibration device provided in the embodiments of the present invention can effectively prevent the drawback of the display effect of a set pattern being affected by the deformation of the set pattern due to the influence of the environment and time in a high-temperature and humid environment.

Description

Calibration equipment and calibration method

This application claims the priority of the Chinese patent application with the application number 202010916791.8 and the application title "Calibration Equipment and Calibration Method" filed with the China Patent Office on September 3, 2020, the entire contents of which are incorporated into this application by reference.

technical field

The present application relates to the technical field of automobile detection, and in particular, to a calibration device and a calibration method.

Background technique

With the development of science and technology and the improvement of living standards, the number of residents' cars has grown rapidly, and cars have become the most popular means of transportation for residents. After the car has been driven for a long time and long mileage, the sensors on the Advanced Driver Assistant System (ADAS) may have a position offset or performance degradation relative to the factory. The sensors are calibrated and tested to properly calibrate the sensors in the above ADAS, so as to ensure that the owner can drive safely.

At present, some calibration devices in the industry include a bracket and a pattern plate, wherein the pattern plate is fixed on the bracket, and the surface of the pattern plate is printed with a set pattern for recognition by sensors in ADAS. When calibrating, the staff places the calibration device at the designated position, and each sensor to be tested in the ADAS of the vehicle to be tested takes pictures of the above-mentioned set pattern.

The inventor of the present invention found in the process of realizing the present invention that: since the setting pattern is formed on the pattern plate by ink printing, and the ink is easily affected by the ambient temperature and humidity, in a high temperature and humid environment, the setting pattern is The fixed pattern is easily deformed by the influence of the environment and time, which affects the display effect of the set pattern, and then affects the calibration accuracy.

SUMMARY OF THE INVENTION

The embodiment of the present invention aims to provide a calibration device and a calibration method, so as to solve the problem that the setting pattern of the current calibration device is easily deformed by the influence of the environment and time in a high temperature and humid environment, thereby affecting the display effect of the setting pattern. technical problem.

The embodiment of the present invention adopts the following technical solutions to solve its technical problems:

A calibration device, comprising:

bracket;

a display device, comprising a flexible display member, the flexible display member has a mounting end and a free end arranged oppositely, the mounting end is connected with the bracket, and the free end is movable relative to the mounting end; and

A light projection device, mounted on the bracket, is used for projecting light to the flexible display element to form a setting pattern on the flexible display element, and the setting pattern is used to assist in calibrating the sensor to be measured.

As a further improvement of the above technical solution, the display device further includes a reel, the reel is rotatably mounted on the bracket, and the installation end is fixed to the reel.

As a further improvement of the above technical solution, the display device further includes a driving module, the driving module is connected to the reel, and the driving module is used for driving the reel to rotate.

As a further improvement of the above technical solution, the drive module includes a motor and a transmission mechanism, and the output shaft of the motor and the reel are respectively connected to the transmission mechanism.

As a further improvement of the above technical solution, the transmission mechanism includes at least one of a gear set mechanism and a synchronous belt mechanism.

As a further improvement of the above technical solution, the drive module includes a hand wheel fixed to the end of the reel.

As a further improvement of the above technical solution, the display device further includes an input module and a controller, and both the input module and the driving module are electrically connected to the controller;

The input module is configured to receive an instruction input by a user, and the controller is configured to control the driving module to drive the reel to move according to the instruction.

As a further improvement of the above technical solution, the display device further includes a storage box, and the storage box is fixed to the bracket;

The reel is accommodated in a storage box and is rotatably mounted on the storage box, and the storage box is provided with a through slot through which the free end passes.

As a further improvement of the above technical solution, the flexible display element is an anti-light curtain.

As a further improvement of the above technical solution, the support includes:

a base having a bottom and a top; and

The stand assembly is mounted on the top of the base and extends in a direction away from the bottom.

As a further improvement of the above technical solution, the reel is arranged perpendicular to the extending direction of the stand assembly.

As a further improvement of the above technical solution, the bracket further includes a beam assembly, the beam assembly is mounted on the vertical frame assembly, and the beam assembly and the reel are disposed opposite to the reel along the extending direction of the vertical frame assembly.

As a further improvement of the above technical solution, the bracket further includes a connecting frame, a first end of the connecting frame is mounted on the beam assembly, and a second end of the connecting frame is opposite to the first end and is opposite to the The beam assemblies are parallel, and the light projection device is mounted on the second end of the connecting frame.

As a further improvement of the above technical solution, the connecting frame includes a connecting assembly, the connecting assembly connects the first end and the second end, and the display device is mounted on the connecting assembly.

As a further improvement of the above technical solution, the connecting assembly includes two vertical rods that are parallel to each other, and the second end is disposed between the two vertical rods.

As a further improvement of the above technical solution, the vertical rod includes a fixed rod and a moving rod, the fixed rod is installed on the first end, the moving rod is sleeved on the fixed rod, and the moving rod can be relatively moving the fixed rod along the length of the vertical rod;

The display device and the second end are both mounted on the moving rod.

As a further improvement of the above technical solution, the connecting assembly further includes a reinforcing member, one end of the reinforcing member is connected to the first end, and the other end of the reinforcing member is connected to the vertical rod.

As a further improvement of the above technical solution, the first end can move relative to the two vertical rods along the length direction of the vertical rods, so as to drive the cross beam assembly to move relative to the two vertical rods.

As a further improvement of the above technical solution, the beam assembly and the vertical frame assembly are slidably matched along the extending direction of the vertical frame assembly.

As a further improvement of the above technical solution, the light projection device is arranged on the side of the reel away from the base.

As a further improvement of the above technical solution, the light projection device is a projector.

As a further improvement of the above technical solution, the mounting end is detachably connected to the bracket.

As a further improvement of the above technical solution, a fixing device is also included, and the fixing device includes a first fixing member and a second fixing member;

The bracket is provided with the first fixing member, the flexible display member is provided with the second fixing member, and the first fixing member and the second fixing member are used to cooperate together to make the flexible display member A portion between the mounting end and the second fixing member is fixed relative to the bracket.

As a further improvement of the above technical solution, one of the first fixing member and the second fixing member includes a magnet, and the other includes a magnetic member, and the magnetic member can be attracted by the magnet.

As a further improvement of the above technical solution, the second fixing member includes a magnet, and the first fixing member is a part of the bracket facing the flexible display member.

As a further improvement of the above technical solution, after the free end moves to a preset position relative to the installation end, it can be fixedly connected to the bracket.

The embodiment of the present invention also adopts the following technical solutions to solve its technical problems:

A calibration method, applied to the above-mentioned calibration equipment, the calibration method comprising:

Control the light projection device to project light to the flexible display to form a set pattern, so that the sensor to be tested in the vehicle to be tested collects a calibration image with the set pattern, and the calibration image is compared with the preset image in the vehicle to be tested. Compared.

The beneficial effects of the present invention are:

The calibration device provided by the embodiment of the present invention includes a bracket, a display device and a light projection device. Wherein, the bracket is used for carrying and installing the display device and the light projection device. The display device has a mounting end and a free end arranged oppositely, wherein the mounting end is connected with the bracket, and the free end can move relative to the mounting end. The light projection device is used for projecting light to the flexible display element to form a set pattern, so as to assist in calibrating the sensor to be tested on the vehicle to be tested.

Compared with the calibration devices currently on the market, the calibration device provided by the embodiment of the present invention uses the calibration device to calibrate the vehicle to be tested. The setting pattern is not formed by ink printing, but is formed by projecting light to the flexible display member through a light projection device. Therefore, the calibration device provided by the embodiment of the present invention can effectively avoid the disadvantage that the setting pattern is easily deformed by the environment and time in a high temperature and humid environment, thereby affecting the display effect of the setting pattern.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. It is stated that the figures in the accompanying drawings do not constitute a scale limitation.

FIG. 1 is a schematic perspective view of a calibration device provided by an embodiment of the present invention when the flexible display element is in a stretched state;

FIG. 2 is a schematic perspective view of the calibration device in FIG. 1 in one direction when the flexible display member is in a retracted state;

3 is a schematic perspective view of the calibration device in FIG. 1 in another direction when the flexible display member is in a retracted state;

FIG. 4 is a schematic diagram of the electrical connection of the input module, the controller and the driving module in the calibration device in FIG. 1;

FIG. 5 is a schematic flowchart of a calibration method according to an embodiment of the present invention.

detailed description

In order to facilitate understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to"/"fixed to"/"mounted to" another element, it can be directly on the other element, or there may be one or more intervening elements therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in this specification are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of the present invention. The terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not used to limit the present invention. As used in this specification, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

In this specification, the "installation" includes welding, screwing, snapping, gluing, etc. to fix or restrict a certain element or device to a specific position or place, and the element or device can be held in a specific position or place. It can also move within a limited range without moving, and the element or device can be disassembled or not disassembled after being fixed or limited in a specific position or place, which is not limited in the embodiment of the present invention.

Please refer to FIG. 1 to FIG. 3 together, which respectively show a three-dimensional schematic diagram of a calibration device provided by one embodiment of the present invention when the flexible display member is in a stretched state, and a schematic diagram of the calibration device when the flexible display member is in a retracted state. A three-dimensional schematic diagram of two directions, the calibration device is used for calibrating a sensor to be tested on a vehicle to be tested, and includes a bracket 100 , a display device 200 and a light projection device 300 . The bracket 100 is used for carrying and installing the above-mentioned display device 200 and the light projection device 300 . The display device 200 includes a flexible display member 210 . The flexible display member 210 has a mounting end 211 and a free end 212 disposed opposite to each other, the mounting end 211 is connected to the bracket 100 , and the free end 212 is movable relative to the mounting end 211 . The light projection device 300 is used for projecting light to the above-mentioned flexible display element 210 to form a setting pattern on the flexible display element 210, and the setting pattern is used to assist in calibrating the sensor to be tested on the vehicle to be tested.

For the above-mentioned bracket 100 , please refer to FIG. 1 in detail. The bracket 100 includes a base 110 , a stand assembly 120 and a beam assembly 130 . The base 110 has a top and a bottom, and the base specifically includes a main body 111 in the shape of an “I” and a plurality of driving wheels 112 mounted on the bottom of the main body 111 , that is, the main body 111 forms the top of the base 110 , and a plurality of driving wheels 112 are formed. The drive wheel 112 forms the bottom of the base 110 . The stand assembly 120 is mounted on the top of the base 110 and extends in a direction away from the bottom of the base 110 . The beam assembly 130 is installed on the stand assembly 120, and is slidably fitted with the stand assembly 120 along the extending direction of the stand assembly, that is, the beam assembly 130 can move in the vertical direction shown in the figure. Optionally, the beam assembly 130 is vertically arranged with the stand assembly 120 , and a calibration assembly 131 for assisting in calibrating some sensors of the automobile is mounted on the beam assembly 130 .

For the above-mentioned display device 200, please continue to refer to FIG. 1 and FIG. 2, the display device 200 includes a flexible display element 210, which is a foldable and rollable flexible element, that is, it can be placed on the user's The flexible display element 210 is used for presenting the set pattern formed by the light projected by the light projection device 300 described above, by switching between the pulled-up state, the folded state, and the curled state under operation. The flexible display element 210 has a mounting end 211 and a free end 212 , and the mounting end 211 is connected with the bracket 100 to restrain the flexible display element 210 from being completely separated from the bracket 100 . In this embodiment, the display device 200 further includes a reel (not shown) and a storage box (not shown), and the mounting end 211 is indirectly connected to the stand 100 through the reel and the storage box 220 . Specifically, the storage box 220 is installed on the bracket 100 , which is perpendicular to the stand assembly 120 and above the beam assembly 130 as shown in the figure, and a hollow storage slot (not shown) is provided inside the storage box 220 . The reel is accommodated in the storage slot of the storage box 220 and is arranged perpendicular to the extending direction of the stand assembly 120. The reel is rotatably installed in the storage box 220, that is, the reel is indirectly and rotatably installed on the bracket 100, and is connected with the bracket 100. The above-mentioned beam assemblies 130 are arranged opposite to each other. The above-mentioned mounting end 211 is fixed on the outer surface of the reel along the axial direction of the reel, and the free end 212 passes through one end of the storage box 220 close to the base 110 and extends in the direction close to the base 110; correspondingly, the storage box 220 is provided with a free end for A narrow slot (not shown) through which 212 passes. Optionally, the flexible display element 210 is a light-resistant screen; further optionally, a weight bar 213 with a certain weight is fixed to the free end 212 to improve the stability of the flexible display element 210 in a free state. It can be understood that even though the display device 200 in this embodiment includes the flexible display member 210, the scroll and the storage box 220 at the same time, the present invention is not limited to this; for example, in other embodiments of the present invention, the display device 200 only It includes a flexible display element 210 and a reel, the reel is directly and rotatably mounted on the stand assembly 120, and the mounting end 211 of the flexible display element 210 is fixed to the reel; for example, in other embodiments of the present invention, the display device 200 only includes the flexible display element 210, and the mounting end 211 of the flexible display element 210 is fixed to the bracket 100 in a detachable manner. Further, for the convenience of the user, the flexible display element 210 can be driven to pull up or roll up to a specific length, so as to present the set pattern projected by the light projection device 300 , or to make the user move away from the flexible display element on the stand assembly 120 . When one side of 210 (rear in the figure) pushes the bracket 100, the vehicle to be tested in front of the calibration device can be easily seen, and the display device 200 also includes a drive module (not shown). The driving module is connected with the reel, and is used for driving the reel to rotate, so as to release or rewind the flexible display member 210, so as to achieve the above-mentioned purpose. In some embodiments, the driving module includes a motor (not shown) and a transmission mechanism (not shown). Both the motor and the transmission mechanism are accommodated in the storage box 220 , and the output shaft of the motor and the reel are connected to the transmission mechanism. The transmission mechanism transmits the power of the motor to the reel, so as to rotate the reel, thereby releasing or rewinding the flexible display member 210 . Among them, the choice of transmission mechanism is various, and it can be a gear set mechanism. For example, the transmission mechanism includes a first gear and a second gear, the first gear is installed on the output shaft of the motor, the second gear is installed on the end of the reel, and the first gear is installed on the output shaft of the motor. The number of teeth of one gear is less than the number of teeth of the second gear, so the gear set mechanism can transmit the power of the motor to the reel on the one hand, and on the other hand, it can reduce the speed of the motor to a suitable speed, so that the speed of the reel is moderate, that is, The speed at which the flexible display member 210 is released or rolled is moderate. The transmission mechanism can also be a timing belt mechanism. For example, the transmission mechanism includes a first pulley, a second pulley and a timing belt. The first pulley is installed on the output shaft of the motor, and the second pulley is installed at the end of the reel. Set on the first pulley and the second pulley, the diameter of the first pulley is smaller than the diameter of the second pulley, so the synchronous belt mechanism can transmit the power of the motor to the reel on the one hand, and can also transmit the power of the motor to the reel on the other hand. The rotational speed of the reel is reduced to an appropriate rotational speed, so that the rotational speed of the reel is moderate, that is, the speed at which the flexible display member 210 is released or wound is moderate. It can be understood that the transmission mechanism can also be a combination of a gear set mechanism and a synchronous belt mechanism. Of course, the transmission mechanism can also be other mechanisms, as long as it is connected to the motor and the reel at the same time, and can transmit the power of the motor to the reel. Of course, the driving module can also be in other structural forms, and it is not limited to the above-mentioned automatic driving mechanism, and it can also be a manual driving mechanism, as long as it can drive the reel to rotate; for example, in other embodiments of the present invention , the driving mechanism includes a hand wheel, the central axis of the hand wheel passes through the storage box and is fixed to the end of the reel, and the user can drive the reel to rotate by turning the hand wheel.

Further, in order to avoid potential safety hazards caused by the user directly controlling the motor, and at the same time to facilitate the user's operation, the display device 200 further includes an input module (not shown) and a controller (not shown). Specifically, please refer to FIG. 4 , which shows a schematic diagram of electrical connection of the input module, the controller and the driving module. The input module 400 and the above-mentioned driving module are all electrically connected to the controller 500 . Wherein, the input module 400 can realize human-computer interaction with the user, and is used for receiving the instruction input by the user and sending it to the controller 500 . The controller 500 is configured to control the above-mentioned driving module to drive the reel to release or rewind the flexible display element 210 according to the instruction. In this embodiment, the input module includes a remote controller, and the user can press a button on the remote controller to make the remote controller acquire the command input by the user, send the command to the controller, and then cause the controller to control the drive module to perform the operation according to the command. Corresponding actions will drive the reel to release or rewind the flexible display element. It can be understood that, in other embodiments of the present invention, the input module may also be other devices, for example, the input module includes at least one of a remote control, a display screen, a keyboard and a key. It is worth mentioning that the "electrical connection" described in this specific embodiment means that the communication of electrical signals can be realized between the two structures, which can be a wired electrical connection realized by a cable, or can be realized through a cable. Wireless connection via Bluetooth, WiFi module, etc.

For the above-mentioned light projection device 300, please continue to refer to FIG. 1 and FIG. 2, the light projection device 300 is installed on the bracket 100, and is disposed on the side of the reel and the storage box away from the base 110, that is, above the storage box 220 shown in the figure. When the flexible display element 210 is stretched to an appropriate position, it is used to project light to the flexible display element 210 to form a set pattern. Wherein, the setting pattern is a pattern adapted to the vehicle type of the vehicle to be tested, which is used to assist in calibrating the sensor to be tested on the vehicle to be tested; the light projection device 300 may acquire the setting pattern by the light projection device 300 The data stored by itself can also be obtained from an external device (such as a computer, tablet, mobile phone, etc.) by means of data communication. Optionally, the light projection device 300 is a projector. Optionally, the light projection device 300 can switch the setting pattern to adapt to different types of vehicles under test or to adapt to different types of sensors under test.

In this embodiment, the stand 100 further includes a connecting frame 140 , and the above-mentioned display device 200 and the light projection device 300 are indirectly mounted on the beam assembly 130 or the vertical frame assembly 120 through the connecting frame 140 . Specifically, please refer to FIG. 3 , and in conjunction with other figures, the connecting frame 140 includes a first end 141 , a second end 142 , and a connecting component 143 respectively connecting the first end 141 and the second end 142 . The first end 141 is installed on the beam assembly 130 , one end of the connecting assembly 143 is connected to the first end 141 , the other end extends away from the base 110 , and the second end 142 is installed on the connecting assembly 143 away from the first end 141 One end, that is, the second end 142 is disposed opposite to the first end 141, and the second end 142 is disposed in parallel with the beam assembly 130. Here, the parallel arrangement of the second end 142 and the beam assembly 130 can be understood as being substantially parallel, A certain error is allowed, or, in other embodiments, the second end 142 may not be arranged in parallel with the beam assembly 130, and the structure of the second end can support the light projection device, which is not limited in this application. The light projection device 300 is mounted on the second end 142 , and the display device 200 is mounted on the connecting element 143 . Optionally, the connecting assembly 143 includes two vertical rods 1431 parallel to each other, the second end 142 is disposed at one end of the vertical rod 1431 away from the first end 141 and between the two vertical rods 1431 , and two ends of the second end 142 They are fixedly connected to the two vertical rods 1431 in a one-to-one correspondence. In this embodiment of the present application, for the structural realization of the first end, reference may be made to the specific realization of the second end, that is, the structural realization of the first end is the same as that of the second end, or the structural realization of the first end is different from that of the first end, which can It only needs to be installed on the beam assembly or the vertical frame assembly 120, which is not limited in the embodiment of the present application.

Further, in some embodiments, in order to strengthen the rigidity of the vertical rod 1431 , the connecting assembly 140 further includes a reinforcing member 144 . Specifically, please continue to refer to 3, and in conjunction with other drawings, the reinforcing member 144 is generally L-shaped as a whole, and one end of the reinforcing member 144 is closely arranged below the first end 141 of the connecting frame 140 and is fixed with the first end 141. The other end extends obliquely relative to the end in a direction away from the base 110 and is fixed to the vertical rod 143 . That is, two ends of the substantially L-shaped reinforcing member 144 are respectively connected to the first end 141 and the vertical rod 1431 . Optionally, the reinforcement member 144 includes a first reinforcement rod and a second reinforcement rod, and the first reinforcement rod and the second reinforcement rod are fixedly connected, that is, the angle between the first reinforcement rod and the second reinforcement rod is fixed; A reinforcement rod and the second reinforcement rod are movably connected, that is, the included angle between the first reinforcement rod and the second reinforcement rod can be adjusted, so as to adapt to the flexibility or mobility of the vertical rod 1431 .

Furthermore, in some embodiments, in order to conveniently adjust the heights of the display device 200 and the light projection device 300 relative to the base 110 to meet the needs of different vehicle models and scenarios, the calibration device further improves the above-mentioned vertical rod 1431 . Specifically, the vertical rod 1431 includes a fixed rod (not shown) and a moving rod (not shown), wherein the fixed rod is mounted on the first end 141, the moving rod is sleeved on the fixed rod, and is vertically connected to the fixed rod. The longitudinal direction of the rod (ie, the extending direction of the above-mentioned stand assembly) is slidably fitted, so that the moving rod can move relative to the fixed rod along the longitudinal direction of the vertical rod. Correspondingly, one end of the above-mentioned reinforcing member 144 away from the first end 141 is fixed to the fixed rod; the above-mentioned display device 200 is installed on the moving rod, and the two ends of the second end 142 of the above-mentioned connecting frame 140 are respectively installed on the two moving rods . It is worth noting that the present invention does not specifically limit the movement mode of the moving rod; it can be manually adjusted by the user to move the moving rod; The movement is performed by electric drive, and in this implementation, the motor assembly can directly drive the moving rod to move up and down, or it can drive the beam assembly 130 to move relative to the stand assembly 120 to drive the moving rod to move up and down together.

Similarly, in other embodiments, in order to easily adjust the height position of the beam assembly 130 relative to the base 110, and thus to adjust the height of the calibration assembly 131 installed thereon, in order to cope with the calibration of sensors on different vehicle models, the above-mentioned first end 141 and the vertical rod 1431 are slidably matched along the longitudinal direction of the vertical rod 1431, that is, the first end 141 can move relative to the vertical rod 1431 along the longitudinal direction of the vertical rod 1431, thereby driving the beam assembly 130 to move relative to the vertical rod 1431; At this time, the vertical rod 1431 plays a guiding role. It is worth noting that the present invention does not specifically limit the movement of the beam assembly 130, which can be adjusted and moved manually by the user; it can also be driven electrically by setting a power mechanism, such as a motor assembly installed on the stand assembly way to move.

Further, in the process of presenting the set pattern projected by the light projection device 300 , the flexible display device 210 is not easy to float with the airflow, so as to improve the stability of the flexible display device 210 to ensure the above setting The pattern can be maintained in a good state, and the calibration device further includes a fixing device (not shown in the figure), so that after the free end 212 moves to a preset position relative to the installation end 211, the free end 212 is fixed with the bracket 100 . Specifically, the fixing device includes a first fixing member (not shown) and a second fixing member (not shown). The first fixing member is provided on the stand assembly 120 of the bracket, and the second fixing member is provided on the flexible display member 210. The first fixing member and the second fixing member are used to cooperate together to make the flexible display member 210 The portion between the mounting end 211 and the second fixing member is fixed relative to the bracket 100 .

In some embodiments, the first fixing member and the second fixing member fix the free end 212 and the bracket 100 by means of magnetic adsorption. Specifically, one of the first fixing member and the second fixing member includes a magnet, and the other includes a magnetic member, and the magnetic member can be attracted by the magnet. The magnetic element can be a magnet that can generate a magnetic field, that is, has magnetism itself; it can also be other magnetic elements that cannot generate a magnetic field, but can be magnetized in the magnetic field to have magnetism. Optionally, the second fixing member includes a magnet, and the first fixing member is a part of the structure of the bracket facing the flexible display member 210, such as the vertical rod 1431 in the figure; further optionally, the second fixing member is the above-mentioned counterweight bar 213; then when the free end 212 is pulled to any position, as long as it is close to the vertical rod 1431, the free end 212 will be fixed relative to the bracket 100. Wherein, the second fixing member may be detachably fixed to the free end 212, or may be non-detachably fixed to the free end 212; similarly, the first fixing member may be detachably fixed to the bracket 100, or may be non-detachable Removably fixed to the bracket 100 .

It can be understood that, in other embodiments of the present invention, the first fixing member and the second fixing member can also be fixed by other forms other than magnetic adsorption, as long as the two can cooperate together to make the flexible display member 210 on the mounting end 211 The part between the second fixing member and the second fixing member can be fixed relative to the bracket 100; for example, in some embodiments, the first fixing member includes a first velcro, the second fixing member includes a second velcro, and the first fixing member and the The second fixing member is fixed by means of bonding, so that the free end 212 of the display element 200 is fixed relative to the bracket 100; for example, in other embodiments, the first fixing member includes a first hook, and the second fixing member includes a first hook. Two hooks, the first fixing piece and the second fixing piece are fixed by clamping.

It should be understood that, even though the free end 212 in this embodiment can be fixed with the connecting component 140 after moving to a preset position relative to the installation end 211, the present invention is not limited to this; in other embodiments of the present invention, After the free end 212 moves to a preset position relative to the installation end 211 , it can also be connected and fixed with other components in the bracket 100 , such as the base 110 , the stand assembly 120 or the beam assembly 130 . Wherein, the "preset position" is the position where the free end is located when the first fixing member and the second fixing member can be fixed to each other.

In some embodiments, the number of the first fixing members is two or more, and they are arranged at different positions of the bracket, so that the free end can be fixed at any one of two or more preset positions. Alternatively, as described above, the first fixing member is set in a region, and the second fixing member of the free end is fixed at any position in the region where the first fixing member is located, so that the free end reaches the preset position.

It is worth noting that: the above-mentioned controller 500 is used as a control device for connecting the input module 400 and the driving module, and includes a first processor 501 and a first memory 502, and the first processor 501 and the first memory 502 can pass through bus or other connections. Both the input module 400 and the driving module are connected to the bus.

The first memory 502, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs and modules. The first processor 501 executes the steps performed by the controller 500 described above by running non-volatile software programs, instructions and modules stored in the first memory 502 . The first memory 502 may include a storage program area and a storage data area, wherein the storage program area may store an operating system and an application program required by at least one function; the storage data area may store data output by an input module and the like. Additionally, the first memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

In some embodiments, the first memory 502 may optionally include memory located remotely from the first processor 501, and these remote memories may be connected to the first processor 501 through a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The program instructions/modules are stored in the first memory 502, and when executed by the one or more first processors 501, perform the steps performed by the controller 500 described above.

The calibration device provided by the embodiment of the present invention includes a bracket 100 , a display device 200 and a light projection device 300 . The display device 200 includes a flexible display element 210 , the flexible display element 210 has a mounting end 211 and a free end 212 disposed opposite to each other, the mounting end 211 is connected to the bracket 100 , and the free end 212 is movable relative to the mounting end 211 . The light projection device 300 is used for projecting light to the above-mentioned flexible display element 210 to form a setting pattern on the flexible display element 210 , and the setting pattern is used to assist in calibrating the sensor to be tested on the vehicle to be tested.

Compared with the calibration devices currently on the market, the calibration device provided by the embodiment of the present invention is used for calibrating the set pattern of the sensor on the vehicle to be tested, which is not formed by ink printing, but projects light to the flexible display element 210 through the light projection device 300 . to form. Therefore, the calibration device provided by the embodiment of the present invention can effectively avoid the disadvantage that the setting pattern is easily deformed by the influence of the environment and time in a high temperature and humid environment, thereby affecting the display effect of the setting pattern.

Based on the same inventive concept, the present invention also provides a calibration method, which is applied to the calibration equipment in the above-mentioned embodiments. Please refer to FIG. 5 , which shows a schematic flowchart of the calibration method. The method includes the following steps:

S1: Control the light projection device 300 to project light to the flexible display element 210 to form a set pattern, so that the sensor to be tested in the vehicle to be tested collects a calibration image with the set pattern, and the calibration image is compared with the calibration image in the vehicle to be tested. Preset images for comparison. Specifically, the set pattern is a pattern that is adapted to the vehicle type to be tested; the way of acquiring the set pattern by the light projection device 300 may be stored by the light projection device 300 itself, or it may be obtained from the light projection device 300 through data communication. Obtained from external devices (such as computers, tablets, mobile phones, etc.). If the calibration image is consistent with the preset image in the vehicle under test, the sensor under test is normal; if the calibration image is inconsistent with the preset image in the vehicle under test, the sensor under test needs maintenance.

It is worth noting that: the process of controlling the light projection device to project the set pattern is realized by a processing module (not shown), and the processing module is a control device, which can be integrated in the light projection device, or can be integrated with the light projection device. 300 are provided independently of each other, and include a second processor and a second memory, and the second processor and the second memory may be connected by a bus or other means.

As a non-volatile computer-readable storage medium, the second memory can be used to store non-volatile software programs, non-volatile computer-executable programs and modules. The second processor executes the steps performed by the processing modules described above by executing non-volatile software programs, instructions and modules stored in the second memory. The second memory may include a stored program area and a stored data area, wherein the stored program area may store an operating system and an application program required by at least one function. Additionally, the memory may include high speed random access memory, and may also include nonvolatile memory, such as at least one magnetic disk storage device, flash memory device, or other nonvolatile solid state storage device.

In some embodiments, the second memory may optionally include memory located remotely from the second processor, these remote memories being connectable to the second processor through a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

The program instructions/modules are stored in the second memory and, when executed by the one or more second processors, perform the steps performed by the processing modules described above.

Optionally, the processing module and the above-mentioned processor are the same device.

Compared with the calibration method currently on the market, the setting pattern in the calibration method provided by the embodiment of the present invention is not formed by ink printing, but is formed by projecting light to the flexible display member through a light projection device. Therefore, the calibration method provided by the embodiment of the present invention can effectively avoid the disadvantage that the display effect of the setting pattern is affected by the outward diffusion of the ink at the edge of the setting pattern.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, The steps may be carried out in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the invention has been The skilled person should understand that it is still possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the implementation of the present invention. scope of technical solutions.

Claims

A calibration device for calibrating a sensor to be tested on a vehicle to be tested, characterized in that it includes:

bracket;

a display device, comprising a flexible display member, the flexible display member has a mounting end and a free end arranged oppositely, the mounting end is connected with the bracket, and the free end is movable relative to the mounting end; and

A light projection device, mounted on the bracket, is used for projecting light to the flexible display element to form a setting pattern on the flexible display element, and the setting pattern is used to assist in calibrating the sensor to be measured.
The calibration device according to claim 1, wherein the display device further comprises a reel, the reel is rotatably mounted on the bracket, and the mounting end is fixed to the reel.
The calibration device according to claim 2, wherein the display device further comprises a driving module, the driving module is connected with the reel, and the driving module is used for driving the reel to rotate.
The calibration device according to claim 3, wherein the driving module comprises a motor and a transmission mechanism, and the output shaft of the motor and the reel are respectively connected with the transmission mechanism.
The calibration device according to claim 4, wherein the transmission mechanism comprises at least one of a gear set mechanism and a timing belt mechanism.
3. The calibration apparatus of claim 3, wherein the drive module includes a handwheel fixed to the end of the spool.
The calibration device according to claim 3, wherein the display device further comprises an input module and a controller, and the input module and the driving module are both electrically connected to the controller;

The input module is configured to receive an instruction input by a user, and the controller is configured to control the driving module to drive the reel to move according to the instruction.
The calibration device according to claim 2, wherein the display device further comprises a storage box, and the storage box is fixed to the bracket;

The reel is accommodated in a storage box and is rotatably mounted on the storage box, and the storage box is provided with a through slot through which the free end passes.
The calibration device according to claim 1, wherein the flexible display member is an anti-light curtain.
The calibration device according to any one of claims 2 to 8, wherein the bracket comprises:

a base having a bottom and a top; and

The stand assembly is mounted on the top of the base and extends in a direction away from the bottom.
The calibration device according to claim 10, wherein the reel is arranged perpendicular to the direction in which the stand assembly extends.
The calibration device according to claim 10, wherein the bracket further comprises a beam assembly, the beam assembly is mounted on the vertical frame assembly, and along the extending direction of the vertical frame assembly, the beam assembly is connected to the vertical frame assembly. The reels are set relative to each other.
The calibration device according to claim 12, wherein the bracket further comprises a connecting frame, a first end of the connecting frame is mounted on the beam assembly, and a second end of the connecting frame is connected to the first end of the connecting frame. The ends are opposite and parallel to the beam assembly, and the light projection device is mounted on the second end of the connecting frame.
The calibration device according to claim 13, wherein the connecting frame comprises a connecting assembly, the connecting assembly connects the first end and the second end, and the display device is mounted on the connecting assembly.
The calibration device according to claim 14, wherein the connecting assembly comprises two vertical rods parallel to each other, and the second end is disposed between the two vertical rods.
The calibration device according to claim 15, wherein the vertical rod comprises a fixed rod and a moving rod, the fixed rod is mounted on the first end, and the moving rod is sleeved on the fixed rod, so that the The moving rod can move relative to the fixed rod along the length direction of the vertical rod;

The display device and the second end are both mounted on the moving rod.
The calibration device according to claim 15, wherein the connecting assembly further comprises a reinforcing member, one end of the reinforcing member is connected to the first end, and the other end of the reinforcing member is connected to the vertical rod.
The calibration device according to claim 15, wherein the first end is movable relative to the two vertical rods along the length direction of the vertical rods, so as to drive the beam assembly relative to the two vertical rods. The vertical bar moves.
The calibration device according to claim 12, wherein the beam assembly and the stand assembly are slidably matched along the extending direction of the stand assembly.
The calibration device according to claim 11, wherein the light projection device is arranged on a side of the reel away from the base.
The calibration apparatus according to claim 1, wherein the light projection device is a projector.
The calibration device according to claim 1, wherein the mounting end is detachably connected to the bracket.
The calibration device according to claim 22, further comprising a fixing device, the fixing device comprising a first fixing member and a second fixing member;

The bracket is provided with the first fixing member, the flexible display member is provided with the second fixing member, and the first fixing member and the second fixing member are used to cooperate together to make the flexible display member A portion between the mounting end and the second fixing member is fixed relative to the bracket.
The calibration apparatus of claim 23, wherein one of the first fixing member and the second fixing member includes a magnet, and the other includes a magnetic member, and the magnetic member can be attracted by the magnet.
The calibration device according to claim 24, wherein the second fixing member comprises a magnet, and the first fixing member is a part of the bracket facing the flexible display member.
The calibration device according to claim 1, wherein the free end can be fixedly connected to the bracket after moving to a preset position relative to the installation end.
A calibration method, characterized in that, applied to the calibration device according to any one of claims 1 to 26, the calibration method comprising:

Control the light projection device to project light to the flexible display to form a set pattern, so that the sensor to be tested in the vehicle to be tested collects a calibration image with the set pattern, and the calibration image is compared with the preset image in the vehicle to be tested. Compared.