CN210513015U - 3D measuring device for ADAS calibration - Google Patents
3D measuring device for ADAS calibration Download PDFInfo
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- CN210513015U CN210513015U CN201921916463.7U CN201921916463U CN210513015U CN 210513015 U CN210513015 U CN 210513015U CN 201921916463 U CN201921916463 U CN 201921916463U CN 210513015 U CN210513015 U CN 210513015U
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Abstract
The utility model discloses a 3D measuring device for ADAS calibration, which comprises a shooting system, a central control device connected with the shooting system and two groups of target discs; the first group is fixedly arranged relative to a calibration cross beam of the ADAS calibration system, and the second group is fixedly arranged relative to a vehicle body; the shooting system is used for shooting the target discs and transmitting the shot pattern data to the central control device, and the central control device is used for calculating the relative positions of the first group of target discs and the second group of target discs according to the pattern data. By adopting the measuring device, an operator can quickly obtain the relative position value at the central control device, so that the calibration beam is adjusted without reading and calculating back and forth, the measuring efficiency is improved, and meanwhile, the 3D measuring mode has higher precision, thereby laying a good foundation for adjusting the relative position between the calibration instrument and the vehicle body.
Description
Technical Field
The utility model relates to a 3D measuring device that ADAS calibration in-process used.
Background
In the ADAS calibration system, calibration instruments such as an ACC sensor calibrator, an LDW pattern data identification plate and a night vision device are all arranged on a calibration cross beam. The prerequisite for correct calibration of the instrument is that the instrument and the vehicle body have the correct relative position. Before adjustment, the relative position between the current cross beam and the vehicle body needs to be obtained through a measuring means and serves as the basis of adjustment.
In the prior art, there are two main ways of measuring the relative position between the cross beam and the vehicle body, one is meter ruler measurement, and the other is measurement by means of an optical instrument. The former has large error and complex operation, and can not meet the requirements of calibration and measurement. The latter generally employs a laser device to irradiate a beam (or the opposite direction) from a vehicle body fixing position, and determines a positional deviation between the two according to the position of a spot, but: (1) the reading needs to be repeated during measurement, and the operation is complicated; (2) the diameter of the laser spot is about 5mm, and the laser element has an angle error, so that the measurement accuracy is low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a 3D measuring device for ADAS marks, its purpose: the measuring efficiency and the measuring precision are improved.
The utility model discloses technical scheme as follows:
A3D measuring device for ADAS calibration comprises a shooting system, a central control device connected with the shooting system and two groups of target disks; the first group is fixedly arranged relative to a calibration cross beam of the ADAS calibration system, and the second group is fixedly arranged relative to a vehicle body;
the shooting system is used for shooting the target discs and transmitting the shot pattern data to the central control device, and the central control device is used for calculating the relative positions of the first group of target discs and the second group of target discs according to the pattern data.
As a further improvement of the device: the shooting system comprises a left camera device and a right camera device; the first group of target plates comprises two parts which are respectively arranged at the left end and the right end of the calibration cross beam; the second group of target disks also comprises two parts which are respectively arranged at the left side and the right side of the rear shaft of the vehicle body; the camera device is used for shooting the target disc on the same side with the camera device.
As a further improvement of the device: the shooting system further comprises an upright post and a lifting beam which moves up and down along the upright post, and the two camera devices are installed at two ends of the lifting beam.
As a further improvement of the device: install the elevating screw, the drive of vertical setting on the stand elevating screw pivoted driving motor and follow the gliding lift slip table of stand, nut on the lift slip table cooperatees with elevating screw, the lift crossbeam is installed on the lift slip table.
As a further improvement of the device: the camera device is provided with a camera and a light-emitting device.
As a further improvement of the device: the target disc comprises a pattern data disc and a connecting shaft connected to the back of the pattern data disc; the pattern data disk is provided with a plurality of reflective dots which are arranged in a matrix.
As a further improvement of the device: the target discs in the second group are mounted on the rear wheel through a three-jaw clamp; the outer end of the three-jaw clamp is provided with a center sleeve matched with a connecting shaft of the target disc, a threaded hole is formed in the side wall of the center sleeve, a fixing bolt is installed in the threaded hole, and the fixing bolt is used for fixing the target disc on the three-jaw clamp.
Compared with the prior art, the utility model discloses following beneficial effect has: (1) the measuring device applies the 3D measuring technology of the automobile industry to the relative position measurement of an ADAS calibration system, a shooting system shoots a target disc and transmits shot pattern data to a central control device, the central control device can calculate the relative position between a first group of target discs and a second group of target discs according to the pattern data so as to obtain the relative position between a calibration cross beam and an automobile rear shaft, an operator can quickly obtain the relative position value at the central control device, and accordingly the calibration cross beam is adjusted without reading and calculating back and forth, the measuring efficiency is improved, meanwhile, the 3D measuring mode has high precision, and a good foundation is laid for the relative position adjustment between a calibration instrument and an automobile body; (2) the camera device can be adjusted in a lifting way, so that the two groups of target discs are ensured to be in a shooting range; (3) the installation angle of the target disc does not influence the measurement, and the measurement is not influenced by factors such as the levelness of the platform, the inclination of the vehicle body and the like; (4) the system can share a set of shooting system and a central control device with the existing 3D four-wheel positioning system, so that the cost is reduced, and the efficiency is improved; (5) the 3D measurement does not need to compensate the tire rim; (6) the sensor without electronic devices does not need to be calibrated regularly, and the maintenance cost is low.
Drawings
Fig. 1 is a schematic structural diagram of the device.
Fig. 2 is a schematic diagram of the structure of the backside of the photographing system.
Fig. 3 is a schematic structural diagram of the camera device.
Fig. 4 is a schematic structural view of the target disk.
Fig. 5 is a schematic view of the structure of the target disk mounted on the three-jaw jig.
Detailed Description
The technical scheme of the utility model is explained in detail below with the attached drawings:
the embodiment relates to a 3D measuring device for ADAS calibration, which applies a 3D measuring technology to position measurement of an ADAS calibration system. The 3D measuring technology mainly adopts the basic principle of physical perspective, a computer information processing technology and a digital image recognition technology, a digital CCD camera is used for collecting image information on a target, and a computer can be used for acquiring the position and the angle of the target, so that coordinate values can be obtained by scanning any target, and the accuracy can reach +/-0.01 mm.
Calibration of an automobile ADAS instrument is the last step of automobile maintenance and detection (the ADAS calibration work can be carried out only after the work of automobile body repair, part replacement, four-wheel positioning and the like is finished, and the four-wheel positioning work must be done before the ADAS system is calibrated). The 3D shooting measurement software technology adopted by the design is the same as the software algorithm of the 3D four-wheel aligner of the applicant company (Haideke technology, Inc., in the smoke platform development area), and can be perfectly combined with the 3D four-wheel aligner to share one set of 3D camera system and one computer, so that the overall maintenance and detection efficiency of the automobile is improved.
The specific implementation of the measuring device is as follows:
referring to fig. 1, the device comprises a shooting system 1 and a central control device 4 connected with the shooting system 1 in a wired mode, wherein an ADAS calibration system is arranged facing to an automobile, and the shooting system 1 is positioned at the rear side of the calibration system. The center control system is arranged beside the vehicle body.
As shown in fig. 2, the photographing system 1 further includes an upright 1-1 and a lifting beam 1-4 moving up and down along the upright 1-1, and the two camera devices 1-5 are mounted at two ends of the lifting beam 1-4.
The lifting and falling device is characterized in that a lifting screw rod 1-2 which is vertically arranged, a driving motor for driving the lifting screw rod 1-2 to rotate and a lifting sliding table 1-3 which is arranged on the upright post 1-1 through a guide rail device to realize up-down sliding are arranged on the upright post 1-1, a nut on the lifting sliding table 1-3 is matched with the lifting screw rod 1-2, and a lifting cross beam 1-4 is arranged on the lifting sliding table 1-3. When the driving motor drives the lifting screw rod 1-2 to rotate, the lifting sliding table 1-3 drives the lifting cross beam 1-4 to move up and down, and the camera device 1-5 is adjusted to a proper height.
As shown in fig. 3, the camera device 1-5 is provided with a CCD camera 1-5-1 and a light emitting diode 1-5-2 disposed around the camera 1-5-1. The light emitting diodes 1-5-2 are strong and emit twice per second.
As shown in fig. 1, the measuring device further comprises two sets of target discs 3: the first group is fixedly arranged relative to the calibration cross member 2 of the ADAS calibration system and the second group is fixedly arranged relative to the vehicle body.
Specifically, the first group of target discs 3 comprises two parts which are respectively arranged at the left end and the right end of the calibration cross beam 2; the second group of target discs 3 also comprises two parts which are respectively arranged at the left side and the right side of the rear shaft of the vehicle body; the camera devices 1-5 are used for shooting the target disc 3 on the same side as the camera devices.
As shown in fig. 4, the target disk 3 includes a pattern data disk 3-1 and a connection shaft 3-2 connected to the back of the pattern data disk 3-1; the pattern data disk 3-1 is provided with a plurality of reflective dots, the roundness is extremely accurate, and the reflective dots are arranged in a matrix. The main body of the target plate 3 is made of metal, and most of the connected calibration cross beams 2 are cast bodies, so that the corrosion resistance and the pressure resistance are strong. The target disc 3 does not have electronic components, batteries and the like, does not need data transmission, and only has a light reflecting effect. The target plate 3 can be connected with other components through a standard connecting shaft 3-2, and can rotate freely along the axis to obtain a proper angle.
The light of the light emitting diode 1-5-2 is reflected after irradiating the target disc 3, and only the light of the light emitting diode 1-5-2 is received by the camera 1-5-1 after the reflected light is filtered.
The installation angle of the target disk 3 is not strictly required, as long as it can be irradiated and photographed. The positional relationship between the pattern data disk 3-1 and the axis of the connecting shaft 3-2 is secured by the machining and assembling accuracy. After the camera 1-5-1 shoots the reflected light image, the axis of the connecting shaft 3-2 of the target disc 3 is automatically calculated.
To ensure the accuracy of the measurement, two target discs 3 in the second set are mounted on the rear wheel by means of a three-jaw clamp 5, as shown in fig. 1 and 5.
The three-jaw clamp 5 is a prior art, and the specific structure thereof can be referred to the three-jaw self-centering hanger in the Chinese utility model patent with the application number of 2016200291340.
The outer end of the three-jaw clamp 5 is provided with a center sleeve 5-2 (due to the self-centering characteristic of the three jaws, the axis of the three-jaw clamp can coincide with the rear axis of the automobile) matched with the connecting shaft 3-2 of the target plate 3, so that the shaft hole connection is realized, and the target plate 3 can be rotated to any angle. The side wall of the central sleeve 5-2 is provided with a threaded hole, a fixing bolt 5-1 is installed in the threaded hole, and a hand wheel at the outer end of the fixing bolt 5-1 is rotated to fix the target plate 3 on the three-jaw clamp 5.
The three-jaw clamp 5 is further provided with a holding hook, and the holding hook holds the tire tightly under the action of the spring.
The central control device 4 is provided with a display, can display the calculated position data in real time, and can truly restore the three-dimensional posture of the vehicle body through a 3D-Max technology based on the position information and follow-up adjust animation real-time prompt. The control mechanism for controlling the lifting of the lifting cross beams 1-4 can also be arranged on the central control device 4.
The shooting system 1 is used for shooting the target discs 3 and transmitting the shot pattern data to the central control device 4, and the computer of the central control device 4 calculates the relative positions between the first group of target discs 3 and the second group of target discs 3 according to the pattern data.
The measuring method comprises the following steps: two target discs 3 are arranged at two ends of a calibration beam 2, the two target discs 3 are arranged on rims of two rear wheels of a vehicle through a three-jaw clamp 5, the height of a camera device 1-5 is adjusted, so that each camera 1-5-1 can continuously shoot reflection patterns on the target discs 3 at the same side, a computer can calculate the coordinate positions and angles of the two target discs 3 at the same side under a coordinate system thereof respectively according to pattern data, and can display the graphs of the target discs 3, a vehicle body, a calibration system and other components on a display through a three-dimensional reconstruction technology according to the position angle data to make visual patterns and prompts, and can also calculate the relative positions and angles of the two target discs 3 at the same side (representing the relative positions and angles between the rear axis of the vehicle body and the calibration beam 2) through difference calculation and display on the display, the operator can directly read these measurement data and adjust the position and angle of the calibration beam 2 according to these data. The whole process is simple to operate, low in labor intensity and very accurate in measured data, and a good foundation is laid for adjustment work.
Claims (7)
1. A3D measuring device for ADAS calibration, its characterized in that: the system comprises a shooting system (1), a central control device (4) connected with the shooting system (1), and two groups of target discs (3); the first group is fixedly arranged relative to a calibration cross beam (2) of the ADAS calibration system, and the second group is fixedly arranged relative to a vehicle body;
the shooting system (1) is used for shooting the target discs (3) and transmitting shot pattern data to the central control device (4), and the central control device (4) is used for calculating the relative positions of the first group of target discs (3) and the second group of target discs (3) according to the pattern data.
2. 3D measuring device for ADAS calibration according to claim 1, characterized in that: the shooting system (1) comprises a left camera device and a right camera device (1-5); the first group of target plates (3) comprises two parts which are respectively arranged at the left end and the right end of the calibration cross beam (2); the second group of target discs (3) also comprises two parts which are respectively arranged at the left side and the right side of the rear shaft of the vehicle body; the camera device (1-5) is used for shooting a target disc (3) on the same side as the camera device.
3. 3D measuring device for ADAS calibration according to claim 2, characterized in that: the shooting system (1) further comprises an upright post (1-1) and a lifting cross beam (1-4) which moves up and down along the upright post (1-1), and the two camera devices (1-5) are installed at two ends of the lifting cross beam (1-4).
4. 3D measuring device for ADAS calibration according to claim 3, characterized in that: the lifting device is characterized in that a vertically arranged lifting screw rod (1-2) and a driving device are arranged on the upright post (1-1), the lifting screw rod (1-2) is driven to rotate, a lifting sliding table (1-3) slides along the upright post (1-1), a nut on the lifting sliding table (1-3) is matched with the lifting screw rod (1-2), and a lifting cross beam (1-4) is arranged on the lifting sliding table (1-3).
5. 3D measuring device for ADAS calibration according to claim 2, characterized in that: the camera device (1-5) is provided with a camera (1-5-1) and a light-emitting device.
6. 3D measuring device for ADAS calibration according to claim 1, characterized in that: the target disc (3) comprises a pattern data disc (3-1) and a connecting shaft (3-2) connected to the back of the pattern data disc (3-1); the pattern data disk (3-1) is provided with a plurality of reflective dots which are arranged in a matrix.
7. The 3D measurement device for ADAS calibration as claimed in claim 6, wherein: the target discs (3) in the second group are arranged on the rear wheel through a three-jaw clamp (5); the outer end of the three-jaw clamp (5) is provided with a center sleeve (5-2) matched with a connecting shaft (3-2) of the target disc (3), the side wall of the center sleeve (5-2) is provided with a threaded hole, a fixing bolt (5-1) is installed in the threaded hole, and the fixing bolt (5-1) is used for fixing the target disc (3) on the three-jaw clamp (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921916463.7U CN210513015U (en) | 2019-11-08 | 2019-11-08 | 3D measuring device for ADAS calibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921916463.7U CN210513015U (en) | 2019-11-08 | 2019-11-08 | 3D measuring device for ADAS calibration |
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| CN210513015U true CN210513015U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921916463.7U Active CN210513015U (en) | 2019-11-08 | 2019-11-08 | 3D measuring device for ADAS calibration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446935A (en) * | 2021-06-09 | 2021-09-28 | 同济大学 | Six-degree-of-freedom measurement system and method |
| CN114720152A (en) * | 2022-04-18 | 2022-07-08 | 烟台开发区海德科技有限公司 | Four-wheel positioning and ADAS integrated detection calibration system and method |
-
2019
- 2019-11-08 CN CN201921916463.7U patent/CN210513015U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446935A (en) * | 2021-06-09 | 2021-09-28 | 同济大学 | Six-degree-of-freedom measurement system and method |
| CN114720152A (en) * | 2022-04-18 | 2022-07-08 | 烟台开发区海德科技有限公司 | Four-wheel positioning and ADAS integrated detection calibration system and method |
| CN114720152B (en) * | 2022-04-18 | 2023-08-04 | 烟台大学 | Four-wheel positioning and ADAS integrated detection calibration system and method |
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