CN212301859U - Car blind area calibration system - Google Patents
Car blind area calibration system Download PDFInfo
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- CN212301859U CN212301859U CN202021004846.XU CN202021004846U CN212301859U CN 212301859 U CN212301859 U CN 212301859U CN 202021004846 U CN202021004846 U CN 202021004846U CN 212301859 U CN212301859 U CN 212301859U
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Abstract
The utility model provides an automobile blind area calibration system, include: the adjustable bracket is arranged at a position which is a preset distance away from the vehicle to be calibrated; the two metal reflecting plates are movably arranged on the adjustable bracket and respectively correspond to the millimeter wave radars on two sides of the tail of the vehicle to be calibrated; the center connecting line of the metal reflecting plate and the corresponding millimeter wave radar is parallel to the direction of the vehicle body of the vehicle to be calibrated, the left error and the right error are not more than a first preset error, the center connecting line of the metal reflecting plate and the corresponding millimeter wave radar is perpendicular to the metal reflecting plate, the angle error is not more than a second preset error, and signal waves emitted by the millimeter wave radar are reflected back to the millimeter wave radar along the direction of the vehicle body after being reflected by the corresponding metal reflecting plate. The system can be suitable for different installation positions and installation angles of the millimeter wave radar by adjusting the position of the correction jig, so that the applicability of the calibration equipment is improved.
Description
Technical Field
The utility model relates to a car blind area is markd technical field, indicates a car blind area calibration system especially.
Background
The advanced driving auxiliary system utilizes various sensors (millimeter wave radar, laser radar, single/double-eye camera and satellite navigation) installed on the automobile to sense the surrounding environment at any time in the driving process of the automobile, collects data, identifies, detects and tracks static and dynamic objects, and combines with map data of a navigator to perform systematic operation and analysis, so that drivers can perceive possible dangers in advance, and the comfort and the safety of automobile driving are effectively improved.
The millimeter wave radar used in the advanced driving assistance system of the automobile and responsible for detecting the visual blind area of the driver in the lane changing process of the automobile needs to be calibrated. However, because the vehicle series is different, the same vehicle series is different, and the installation position and the installation angle of the millimeter wave radar are different, the requirements on the placement position and the angle of the calibration equipment are different. Therefore, a calibration method and a calibration system suitable for the blind areas of the millimeter wave radar such as different installation positions and installation angles are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automobile blind area calibration system can rectify the position of tool through the adjustment with the different mounted position, the installation angle of suitable millimeter wave radar to improve calibration equipment's suitability.
The utility model provides a technical scheme as follows:
the utility model provides a car blind area calibration system, include:
the adjustable bracket is arranged at a position which is a preset distance away from the vehicle to be calibrated;
the two metal reflecting plates are movably arranged on the adjustable bracket and respectively correspond to the millimeter-wave radars on two sides of the tail of the vehicle to be calibrated;
wherein the central connecting line of the metal reflecting plate and the corresponding millimeter wave radar is parallel to the direction of the vehicle body of the vehicle to be calibrated, and the left-right error does not exceed a first preset error,
the metal reflecting plate is perpendicular to the metal reflecting plate along the central connecting line of the corresponding millimeter wave radar, and the angle error is not more than a second preset error, so that signal waves emitted by the millimeter wave radar are reflected back to the millimeter wave radar along the direction of a vehicle body after being reflected by the corresponding metal reflecting plate.
The metal reflecting plate is made of aluminum, iron, stainless steel and the like, the length of the metal reflecting plate is 0.5-1 meter, the width of the metal reflecting plate is 0.5-1 meter, the thickness of the metal reflecting plate is at least 3 mm, and in the size range of the metal reflecting plate, the roughness of the metal reflecting plate in every 80 mm-80 mm area is less than 0.1mm so as to ensure the reflecting effect of the metal reflecting plate.
By arranging the adjustable bracket and arranging the adjustable bracket at a position which is a preset distance away from a vehicle to be calibrated, two metal reflecting plates are movably arranged on the adjustable bracket, and by adjusting the adjustable bracket and the metal reflecting plates, the center connecting line of the metal reflecting plates and the corresponding millimeter wave radar can be parallel to the direction of the vehicle body of the vehicle to be calibrated and perpendicular to the metal reflecting plates, so that signal waves emitted by the millimeter wave radar can be reflected back to the millimeter wave radar along the direction of the vehicle body after being reflected by the corresponding metal reflecting plates, thereby calculating the installation offset and angle error of the millimeter wave radar according to the phase difference of the signal waves and calibrating the millimeter wave radar, and the scheme can be suitable for calibrating the millimeter wave radars of different vehicles, different installation positions and different installation angles due to the adjustable position of the metal reflecting plates, thereby enhancing the universality of equipment, the calibration effect is better.
Furthermore, the adjustable support comprises a base and a supporting cross rod, and the base is connected with the supporting cross rod through a plurality of vertically arranged telescopic vertical rods;
the two metal reflecting plates are respectively and movably arranged at two ends of the supporting cross rod.
Through setting up the base and supporting the horizontal pole, the base is used for the support equipment, supports the horizontal pole and is used for movable mounting metal reflecting plate, and connects through the flexible montant of the vertical setting of a plurality of between base and the supporting horizontal pole for the height-adjustable of supporting the horizontal pole, thereby makes the height-adjustable of metal reflecting plate, makes the central height of metal reflecting plate can equal with the central height of millimeter wave radar.
Furthermore, the side of the supporting cross rod is provided with a sliding groove, and the metal reflecting plates are movably arranged on the sliding groove through pulley assemblies.
The sliding grooves are formed in the supporting cross rods, and the metal reflecting plates are well installed on the sliding grooves through the pulley assemblies, so that the horizontal positions of the metal reflecting plates can be adjusted, and the center connecting lines of the metal reflecting plates and the corresponding millimeter wave radar are parallel to the direction of a vehicle body of a vehicle to be calibrated.
Further, the top surface of the supporting cross rod is provided with a level meter mounting groove for mounting a level meter.
The level meter mounting groove is formed in the top face of the supporting cross rod and used for mounting a level meter, whether the supporting cross rod is in a horizontal state or not can be verified, and the calibration precision can be guaranteed.
Furthermore, fortune horse wheel is all installed to the bottom both sides of base for adjust the horizontal angle of support horizontal pole.
All set up the fortune horse wheel through the bottom both sides at the base, can be convenient for adjust the horizontal angle who supports the horizontal pole, reunion spirit level can guarantee to support the level of horizontal pole.
Furthermore, wave absorbing plates are arranged on the two sides of the adjustable support and the vehicle to be calibrated.
Because the millimeter wave radar emission signal is the wide-angle, for avoiding the radar signal to hit other materials of surrounding environment and cause the reflection, interfere with the signal between millimeter wave radar and the metal reflecting plate, so the absorbing plate that the position about each 1m put absorbing material and make about the automobile body can improve the precision of demarcation, and the length of absorbing the board is between metal reflecting plate and vehicle C post.
Further, the first preset error is +/-5 cm;
the second preset error is +/-0.5 degrees;
the predetermined distance is 2-3 meters.
Further, a clearance area is arranged on one side, away from the vehicle to be calibrated, of the adjustable support.
According to the utility model provides an automobile blind area calibration system, through setting up adjustable support, and set up adjustable support in the position department apart from waiting to mark the vehicle predetermined distance, movable mounting has two metal reflecting plates on the adjustable support, through adjusting adjustable support and metal reflecting plate, can make the metal reflecting plate parallel with the automobile body direction of waiting to mark the vehicle with the center line of millimeter wave radar that corresponds, and perpendicular to metal reflecting plate, make the signal wave that the millimeter wave radar sent reflect back to the millimeter wave radar along the automobile body direction after the reflection of corresponding metal reflecting plate, thus can calculate the installation offset and the angle error of millimeter wave radar according to the phase difference of signal wave, and then mark the millimeter wave radar, this scheme is because the position of metal reflecting plate is adjustable, thus can be applicable to the calibration of the millimeter wave radar of different vehicles, different mounted positions, different mounting angles, the device has stronger universality and better calibration effect.
Drawings
The foregoing features, technical features, advantages and embodiments of the present invention will be further explained in the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
fig. 2 is a schematic view of an adjustable support structure according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an embodiment of the present invention.
Reference numbers in the figures: 10-an adjustable support; 11-a base; 12-a support rail; 13-a telescopic vertical rod; 14-a level gauge; 15-Fuma wheel; 20-a metal reflector plate; 30-millimeter wave radar; 40-a wave absorbing plate; 50-a clean-out area.
Detailed Description
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
Example 1
The utility model discloses an embodiment, as shown in FIG. 1, the utility model provides an automobile blind area calibration system, including adjustable support 10 and two metal reflecting plates 20, adjustable support 10 sets up in the position apart from waiting to mark vehicle predetermined distance, and in this embodiment, predetermined distance is 2-3 meters, and in other embodiments, according to the difference of demarcation precision, the predetermined distance can be adapted to the adjustment.
The two metal reflecting plates 20 are movably mounted on the adjustable support 10, and the two metal reflecting plates 20 respectively correspond to the millimeter wave radars 30 on two sides of the tail of the vehicle to be calibrated.
Specifically, the millimeter-wave radar 30 is generally installed on both sides of the rear of the vehicle, and when calibrating, the two metal reflection plates 20 are respectively corresponding to the millimeter-wave radar 30, so as to calibrate the two millimeter-wave radars 30 at the same time, and in other embodiments, the millimeter-wave radars 30 may be further calibrated one by one.
In the embodiment, the metal reflective plate 20 is made of aluminum, iron, stainless steel, etc., the metal reflective plate 20 has a length of 0.5-1 m, a width of 0.5-1 m, and a thickness of at least 3 mm, and the roughness per 80mm by 80mm area is less than 0.1mm within the size range of the metal reflective plate 20, so as to ensure the reflective effect of the metal reflective plate 20.
The center connecting line of the metal reflecting plate 20 and the corresponding millimeter wave radar 30 is parallel to the direction of the vehicle body of the vehicle to be calibrated, and the left-right error does not exceed a first preset error, wherein in the embodiment, the first preset error is +/-5 cm.
Meanwhile, the center line of the metal reflector plate 20 and the corresponding millimeter-wave radar 30 is perpendicular to the metal reflector plate 20, and the angle error does not exceed the second preset error, in this embodiment, the second preset error is ± 0.5 °, so that the signal wave emitted by the millimeter-wave radar 30 is reflected back to the millimeter-wave radar 30 along the vehicle body direction after being reflected by the corresponding metal reflector plate 20.
By arranging the adjustable support 10 and arranging the adjustable support 10 at a position which is a preset distance away from a vehicle to be calibrated, two metal reflecting plates 20 are movably arranged on the adjustable support 10, and by adjusting the adjustable support 10 and the metal reflecting plates 20, the central connecting line of the metal reflecting plates 20 and the corresponding millimeter-wave radar 30 can be parallel to the direction of the vehicle body of the vehicle to be calibrated and perpendicular to the metal reflecting plates 20, so that signal waves emitted by the millimeter-wave radar 30 can be reflected back to the millimeter-wave radar 30 along the direction of the vehicle body after being reflected by the corresponding metal reflecting plates 20, the installation offset and the angle error of the millimeter-wave radar 30 can be calculated according to the phase difference of the signal waves, and the millimeter-wave radar 30 is calibrated, and the scheme can be suitable for calibration of millimeter-wave radars 30 of different vehicles, different installation positions and different installation angles due to the adjustable position of the metal reflecting plates 20, the device has stronger universality and better calibration effect.
Example 2
In an embodiment of the present invention, as shown in fig. 2, on the basis of embodiment 1, the adjustable support 10 includes a base 11 and a supporting cross rod 12, and the base 11 and the supporting cross rod 12 are connected by a plurality of vertically arranged telescopic vertical rods 13; two metal reflecting plates 20 are respectively and movably arranged at two ends of the supporting transverse rod 12.
Through setting up base 11 and support horizontal pole 12, base 11 is used for the support equipment, support horizontal pole 12 is used for movable mounting metal reflecting plate 20, and connect through the flexible montant 13 of the vertical setting of a plurality of between base 11 and the support horizontal pole 12, make the height-adjustable of support horizontal pole 12, thereby make metal reflecting plate 20's height-adjustable, and then make metal reflecting plate 20's central height can equal with millimeter wave radar 30's central height, be favorable to demarcating millimeter wave radar 30.
Preferably, the lateral surface of the support rail 12 is provided with a sliding groove, and the metal reflection plates 20 are movably mounted on the sliding groove through a pulley assembly.
The sliding grooves are formed in the supporting cross rod 12, and the metal reflecting plate 20 is well installed on the sliding grooves through the pulley assemblies, so that the horizontal position of the metal reflecting plate 20 can be adjusted, and the center connecting line of the metal reflecting plate 20 and the corresponding millimeter wave radar 30 is parallel to the direction of the vehicle body of the vehicle to be calibrated.
In the present embodiment, the horizontal position of the metal reflection plate 20 is adjusted by the pulley assembly and the sliding groove, and in other embodiments, other ways, such as setting the support rail 12 as a telescopic rod, may be adopted to adjust the horizontal position of the metal reflection plate 20.
Preferably, the top surface of support rail 12 is provided with a level mounting slot for mounting a level 14.
Through set up the spirit level mounting groove at the top surface of supporting horizontal pole 12 for installation spirit level 14 can verify whether supporting horizontal pole 12 is in the horizontality, is favorable to guaranteeing the precision of demarcation.
Preferably, two sides of the bottom end of the base 11 are respectively provided with a horse wheel 15 for adjusting the horizontal angle of the support cross rod 12.
All set up the horse wheel 15 through the bottom both sides at base 11, not only can make things convenient for the removal of equipment, can also be convenient for adjust the horizontal angle who supports horizontal pole 12, and level 14 is combined again, can guarantee to support the level of horizontal pole 12.
Example 3
In an embodiment of the present invention, as shown in fig. 1, on the basis of embodiment 1 or embodiment 2, the adjustable bracket 10 and the two sides of the vehicle to be calibrated are both provided with wave absorbing plates 40.
Because the millimeter wave radar 30 transmits signals in a large angle, the signals between the millimeter wave radar 30 and the metal reflecting plate 20 are interfered in order to prevent the radar signals from striking other materials in the surrounding environment to cause reflection, so that the wave absorbing plates 40 made of the wave absorbing materials are placed at the positions of about 1m around the vehicle body, the calibration precision can be improved, and the length of the wave absorbing plates 40 is between the metal reflecting plate 20 and the C column of the vehicle.
Preferably, a clearance area 50 is arranged on a side of the adjustable bracket 10 away from the vehicle to be calibrated, and in the embodiment, the width of the clearance area 50 is about 0.5 meter.
Example 4
The utility model discloses an embodiment, as shown in FIG. 3, on the basis of above-mentioned arbitrary embodiment, the utility model also provides a calibration method for above-mentioned car blind area calibration system, including the step:
and S1, adjusting the relative positions of the millimeter wave radar and the corresponding metal reflecting plate to enable the center connecting line of the millimeter wave radar and the corresponding metal reflecting plate to be parallel to the direction of the vehicle body of the vehicle to be calibrated and to be perpendicular to the metal reflecting plate.
Specifically, adjusting the relative position of the millimeter-wave radar and the corresponding metal reflecting plate specifically includes: adjusting the distance between the adjustable bracket and the vehicle to be calibrated to be a preset distance, wherein the preset distance is 2-3 m; adjusting the height of the metal reflecting plate to enable the metal reflecting plate to be equal to the center of the corresponding millimeter wave radar in height; and adjusting the horizontal position of the metal reflecting plate to enable the center connecting line of the metal reflecting plate and the corresponding millimeter wave radar to be parallel to the direction of the vehicle body of the vehicle to be calibrated and to be vertical to the metal reflecting plate.
And S2, calculating the installation offset and the angle error of the millimeter wave radar according to the phase difference of the signal wave transmitted by the millimeter wave radar and the received signal wave reflected back by the metal reflecting plate.
And S3, inputting a correction program to calibrate the installation offset and the angle error of the millimeter wave radar.
And S4, judging whether the calibration result of the millimeter wave radar meets the preset standard, if not, re-calibrating until the calibration result meets the preset standard.
According to the scheme, by adjusting the relative positions of the millimeter-wave radar and the corresponding metal reflecting plate, the center connecting line of the millimeter-wave radar and the corresponding metal reflecting plate is parallel to the direction of the vehicle body of the vehicle to be calibrated and is perpendicular to the metal reflecting plate; calculating the installation offset and angle error of the millimeter wave radar according to the phase difference of the signal wave transmitted by the millimeter wave radar and the received signal wave reflected back by the metal reflecting plate; finally, the installation offset and the angle error of the millimeter wave radar can be calibrated by inputting a correction program, so that the equipment can be suitable for calibrating the millimeter wave radars of different vehicles, different installation positions and different installation angles, the universality of the equipment is stronger, and the calibration effect is better.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An automobile blind area calibration system is characterized by comprising:
the adjustable bracket is arranged at a position which is a preset distance away from the vehicle to be calibrated;
the two metal reflecting plates are movably arranged on the adjustable bracket and respectively correspond to the millimeter-wave radars on two sides of the tail of the vehicle to be calibrated;
wherein the central connecting line of the metal reflecting plate and the corresponding millimeter wave radar is parallel to the direction of the vehicle body of the vehicle to be calibrated, and the left-right error does not exceed a first preset error,
the metal reflecting plate is perpendicular to the metal reflecting plate along the central connecting line of the corresponding millimeter wave radar, and the angle error is not more than a second preset error, so that signal waves emitted by the millimeter wave radar are reflected back to the millimeter wave radar along the direction of a vehicle body after being reflected by the corresponding metal reflecting plate.
2. The vehicle blind area calibration system according to claim 1, wherein: the adjustable support comprises a base and a supporting cross rod, and the base is connected with the supporting cross rod through a plurality of vertically arranged telescopic vertical rods;
the two metal reflecting plates are respectively and movably arranged at two ends of the supporting cross rod.
3. The vehicle blind area calibration system according to claim 2, wherein: the side of the supporting cross rod is provided with a sliding groove, and the metal reflecting plates are movably mounted on the sliding groove through pulley assemblies.
4. The vehicle blind area calibration system according to claim 2, wherein: the top surface of the supporting cross rod is provided with a level meter mounting groove for mounting a level meter.
5. The vehicle blind area calibration system according to claim 2, wherein: and two sides of the bottom end of the base are provided with horse wheels for adjusting the horizontal angle of the supporting cross rod.
6. The vehicle blind area calibration system according to claim 1, wherein: wave absorbing plates are arranged on the two sides of the adjustable support and the vehicle to be calibrated.
7. The vehicle blind area calibration system according to claim 1, wherein: the first preset error is +/-5 cm;
the second preset error is +/-0.5 degrees;
the predetermined distance is 2-3 meters.
8. The vehicle blind area calibration system according to claim 1, wherein: and a clearance area is arranged on one side of the adjustable support, which is far away from the vehicle to be calibrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021004846.XU CN212301859U (en) | 2020-06-04 | 2020-06-04 | Car blind area calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021004846.XU CN212301859U (en) | 2020-06-04 | 2020-06-04 | Car blind area calibration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212301859U true CN212301859U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021004846.XU Active CN212301859U (en) | 2020-06-04 | 2020-06-04 | Car blind area calibration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212301859U (en) |
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2020
- 2020-06-04 CN CN202021004846.XU patent/CN212301859U/en active Active
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