CN212207664U - Automatic calibration and calibration system for radar - Google Patents
Automatic calibration and calibration system for radar Download PDFInfo
- Publication number
- CN212207664U CN212207664U CN202020400906.3U CN202020400906U CN212207664U CN 212207664 U CN212207664 U CN 212207664U CN 202020400906 U CN202020400906 U CN 202020400906U CN 212207664 U CN212207664 U CN 212207664U
- Authority
- CN
- China
- Prior art keywords
- radar
- calibration
- support
- distance
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The utility model discloses an automatic calibration and calibration system that marks of radar, in the system: the radar calibration platform comprises a rail car, a radar support and a laser ranging sensor, wherein the rail car comprises a servo controller and a driving wheel, the servo controller is used for controlling a transmission gear to rotate, and the transmission gear drives the driving wheel to rotate through a belt so that the radar calibration platform moves on a test track; the radar bracket is arranged on the rail car and used for bearing a radar; the laser distance measuring sensor is used for measuring the laser distance between the laser distance measuring sensor and the reflecting panel; the storage mounting rack is arranged on the rail car and used for bearing the computing control device; and the calculation control device receives the distance between the radar and the reflecting panel and the laser distance measured by the radar, and feeds the distance back to the radar for calibration. By adopting the scheme, the radar calibration automation can be realized, and manual participation is not needed; the accuracy of radar calibration is improved, and the calibrated radar can reach the product performance of the factory standard.
Description
Technical Field
The utility model relates to a radar calibration field especially relates to an automatic calibration system that marks of radar.
Background
In the production process of radar products, the calibration and the production test verification of the products are important links for the technical standard reaching and the quality control of the products, and have important influences on the production cost, the production efficiency and the delivery cycle of the products.
The factory test of the radar product needs to calibrate and calibrate the product parameters according to the specific radar model so as to achieve the product performance of the factory standard. In the prior art, the above processes usually adopt manual operation or manual participation operation, the steps are complicated, the labor cost is high, the calibration and calibration accuracy is difficult to guarantee, in addition, data cannot be synchronously and electronically filed and stored, and the workload is increased in post-processing, query and the like.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing an automatic calibration and calibration system of radar.
The technical scheme is as follows: the embodiment of the utility model provides an in provide an automatic calibration and calibration system of radar, include: test track, reflection panel, calculation controlling means and radar calibration platform, wherein:
the test track comprises at least two tracks and a bracket for supporting the tracks;
the radar calibration platform comprises a rail car, a radar support, an object placing mounting rack and a laser ranging sensor, wherein the rail car comprises a servo controller, a transmission gear, a belt and a driving wheel, the servo controller is used for controlling the transmission gear to rotate, and the transmission gear drives the driving wheel to rotate through the belt so that the radar calibration platform moves on a test track; the radar bracket is arranged on the rail car and used for bearing a radar; the laser distance measuring sensor is used for measuring the laser distance between the laser distance measuring sensor and the reflecting panel; the storage mounting rack is arranged on the rail car and used for bearing the computing control device;
the reflection panel is arranged facing the radar calibration platform;
and the calculation control device is used for respectively controlling the distance between the radar and the reflection panel measured by the laser ranging sensor when the radar calibration platform reaches the specified position, and feeding back the distance and the laser distance between the radar and the reflection panel measured by the radar to the radar for calibration after receiving the distance and the laser distance between the radar and the reflection panel.
Specifically, the radar support is arranged in a range of a specified position, so that the distance measuring direction of the borne radar is opposite to the reflection panel, and the radar support is a flange-fixed radar testing support.
Specifically, the radar calibration platform includes: and if the deviation between the laser distances measured by the laser distance measuring sensors received by the calculation control device exceeds a distance deviation threshold value, the calculation control device sends out a corresponding prompt.
Specifically, the radar calibration platform further includes: the horizontal sensor is in communication connection with the calculation control device and is used for detecting the horizontal state of the target object, and if the deviation of the horizontal state of the target object exceeds a horizontal deviation threshold value, the calculation control device sends out a corresponding prompt; the target object comprises a radar and a laser ranging sensor.
Specifically, the support for supporting the track is a height adjusting support for adjusting the height of the track.
Specifically, the radar support is movably connected with the rail car, and if the deviation of the horizontal state of the radar exceeds a horizontal deviation threshold value, the calculation control device controls the radar support or/and the height adjusting support to adjust the position.
Specifically, still include: the interior surface of the electromagnetic shielding chamber is provided with a microwave absorption material, and the test track, the reflection panel and the radar calibration platform are all arranged in the electromagnetic shielding chamber.
Has the advantages that: compared with the prior art, the utility model has the advantages of it is as follows showing: the radar calibration is automatic, and manual participation is not needed; the accuracy of radar calibration is improved, and the calibrated radar can reach the product performance of the factory standard.
Drawings
Fig. 1 is a schematic view of an overall structure of an automatic calibration and calibration system for radar provided in an embodiment of the present invention;
fig. 2 is a side rear view of the radar automatic calibration and calibration system provided in the embodiment of the present invention;
fig. 3 is a side front view of an automatic calibration and calibration system for radar provided in an embodiment of the present invention;
fig. 4 is a front side view of a radar calibration platform provided in an embodiment of the present invention;
fig. 5 is a structural view of a rail car provided in an embodiment of the present invention;
fig. 6 is a structural diagram of a universal radar test support provided in an embodiment of the present invention;
fig. 7 is a structural diagram of a flange-fixed radar test bracket provided in an embodiment of the present invention;
fig. 8 is an exploded view of a rail connection plate and a bracket provided in an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, it is a schematic diagram of an overall structure of a radar automatic calibration and calibration system provided in an embodiment of the present invention; referring to fig. 2, it is a side rear view of the radar automatic calibration system provided in the embodiment of the present invention; referring to fig. 3, it is a side front view of the radar automatic calibration system provided in the embodiment of the present invention; referring to fig. 4, it is a front side view of the radar calibration platform provided in the embodiment of the present invention; referring to fig. 5, it is a structural view of the rail car provided in the embodiment of the present invention.
The embodiment of the utility model provides an in provide an automatic calibration and calibration system of radar, include: test track 2, reflecting panel 3, calculation controlling means and radar calibration platform 1, wherein:
the test track 2 comprises at least two tracks and a bracket for supporting the tracks;
the radar calibration platform 1 comprises a rail car, a radar support, object mounting frames 12 and 13 and a laser ranging sensor, wherein the rail car comprises a servo controller 28, a transmission gear, a belt 49 and a driving wheel, the servo controller 28 is used for controlling the transmission gear to rotate, and the transmission gear drives the driving wheel to rotate through the belt 49 so that the radar calibration platform moves on a test track; the radar bracket is arranged on the rail car and used for bearing a radar; the laser distance measuring sensor is used for measuring the laser distance between the laser distance measuring sensor and the reflecting panel; the object placing mounting racks 12 and 13 are arranged on the rail car and used for bearing the computing control device;
the reflection panel is arranged facing the radar calibration platform;
and the calculation control device is used for respectively controlling the distance between the radar and the reflection panel measured by the laser ranging sensor when the radar calibration platform reaches the specified position, and feeding back the distance and the laser distance between the radar and the reflection panel measured by the radar to the radar for calibration after receiving the distance and the laser distance between the radar and the reflection panel.
The embodiment of the utility model provides an in, the radar support sets up to make the range finding direction of the radar that bears just right at assigned position's within range reflection panel 3.
The embodiment of the utility model provides an in, still include: the interior surface of the electromagnetic shielding chamber is provided with a microwave absorption material, and the test track 2, the reflection panel 3 and the radar calibration platform 1 are all arranged in the electromagnetic shielding chamber.
In the concrete implementation, platform 1, test track 2 and reflecting panel 3 are markd to the radar and are located electromagnetic shield indoor portion, and electromagnetic shield indoor side, upside and downside (not shown in the figure) all can arrange absorbing material, constitute electromagnetic shield layer 4, constitute the microwave darkroom with whole electromagnetic shield room, provide electromagnetic shield environment, and isolated scattered electromagnetic signal improves the degree of accuracy of demarcation calibration to the interference of radar product test. Reflecting panel 3 sets up perpendicularly in the positive place ahead of platform is markd to the radar, and the reflecting panel size can surpass the radar and mark 1 peripheral scope of platform, guarantees that the transmitted wave of installing the radar on platform is markd to the radar can both be reflected by reflecting panel 3.
In specific implementation, the reflective panel 3 may be made of metal material to reflect laser and radar, so that the radar directly faces the reflective panel 3, and the radar calibration platform 1 directly faces the reflective panel 3, thereby avoiding distance measurement errors caused by other positions and improving calibration accuracy.
In the specific implementation, the main frame of the radar calibration platform 1 is a stable framework composed of an upper layer of # -shaped frame and a lower layer of # -shaped frame and 4 middle support columns 5, wherein the upper layer of # -shaped frame is composed of a frame transverse plate 6 connected with the support columns 5, a frame transverse plate 7, a frame vertical plate 8 and a frame vertical plate 9 which are fixed on the frame transverse plate 7 in parallel, the frame transverse plate 6 and the frame transverse plate 7 are simultaneously provided with a left side U-shaped bracket 10 and a right side U-shaped bracket 11 which have different depths, the two U-shaped brackets can be respectively fixed with a left side object placing mounting bracket 12 and a right side object placing bracket 13, a notebook computer or other devices with computing power can be placed on the object placing brackets to be used as software operation carriers (computing control devices) for controlling an interactive system, and other external devices such as a direct current power supply and a multifunctional power supply conversion plate are installed, the infrared laser ranging device is mainly characterized by comprising a frame transverse plate 14, a frame transverse plate 15, a frame vertical plate 16 and a frame vertical plate 17, wherein a rail car system is mainly assembled on a lower-layer # -shaped frame, two vertical upper mounting baffle plates 18 and two lower mounting baffle plates 19 are respectively fixed at the outer side positions of the frame transverse plate 7 and the frame transverse plate 15 at the front end part of the rail car, and a plurality of infrared laser ranging positioners 20 can be respectively installed at the outer sides of the two upper mounting baffle plates 18 and the inner sides of the two lower mounting baffle plates 19.
In the embodiment of the utility model, radar calibration platform 1 still includes: the level sensor 22 is in communication connection with the calculation control device and is used for detecting the level state of the target object, and if the deviation of the level state of the target object exceeds a level deviation threshold value, the calculation control device sends out a corresponding prompt; the target object comprises a radar and a laser ranging sensor.
In concrete implementation, be fixed with preceding horizontal pole 21 on installing baffle 19 down, at its recess position, can imbed and installed level sensor 22, can all install level sensor 22 on two-layer frame diaphragm, frame vertical plate and the radar support about simultaneously, ensure that radar calibration platform 1 wholly keeps the level in installation and operation test process, guarantee its and horizontal orbital adaptation to can smooth and easy stable work operation, improve the degree of accuracy of calibrating.
In a specific implementation, the laser distance measured by the laser ranging sensor is a one-way distance between the laser ranging sensor and the reflection panel, and the deviation between the laser distance and the actual distance is small, so that calibration accuracy can be provided by calibrating the radar through the laser distance at the same specified position and the deviation between the distance measured by the radar and the reflection panel, wherein the specified position is determined before calibration.
In the embodiment of the utility model, the radar support is flange fixed type radar test support 24.
In specific implementation, the universal radar test support 23 or the flange-fixed radar test support 24 can be mounted on two frame risers of the upper-layer # -shaped frame. Through two different supports, all kinds of level radar products can be assembled and fixed, and the test is put on the shelf. Wherein general type radar test support 23 can realize assembling side by side and the layer assembly of many sets of products, carries out the test of many sets of products of single batch time simultaneously, can greatly improve efficiency of software testing, and the advantage of full play automatic test satisfies the demand of volume production test, and flange mounting type radar test support 24 can improve the fixed stability of radar, guarantees to mark the degree of accuracy of calibration.
Referring to fig. 6, it is a structural diagram of a universal radar test bracket provided in an embodiment of the present invention; referring to fig. 7, it is a structure diagram of a flange-fixed radar testing bracket provided in an embodiment of the present invention.
In specific implementation, the universal radar test bracket 23 is formed by matching a test bracket mounting plate 2301, a test bracket connecting column 2302 and test tools matched with various types of radars, and can be expanded by adopting a multilayer structure according to test requirements, so that simultaneous testing of multiple sets of parallel and layered radar products is realized; the flange fixing type radar test support 24 is composed of a flange fixing clamping plate 2401, a flange fixing clamping plate 2402 and a connecting bottom plate 2403, products with large fixing flange plates can be fixed on the upper frame for testing, the test support can be compatible with fixing flange plate sizes of various different models, and radar fixing stability is improved.
In a specific implementation, the rail 2 mainly includes a bracket 33, a rail support bracket 34, an angle iron rail 35, a rail connection plate 36, and an angle iron fixing plate 37. The angle iron track 35 is fixed on the track connecting plate 36 by an angle iron fixing plate 37 through screws, and one track connecting plate 36 is fixedly connected with two brackets 33. And a track support frame 34 is adopted to reinforce and support the track in the middle of each section of angle steel track 35. Support 33 and track support frame 34 can carry out the altitude mixture control, carry out the accuracy regulation through level bar and other measuring tool when whole track installation, make whole track 35 realize parallel placement and horizontal erection, overcome electromagnetic shield room ground flatness, leave out the space of laying electromagnetic shielding material (absorbing material), fill absorbing material with the bottom surface, among the track 2 embedding absorbing material, thereby furthest reduces the influence of bottom surface reflection clutter to radar calibration, and track 2 skew, the warpage scheduling problem that various probably appear such as structure processing error. A derailing guard bar is arranged on a rail connecting plate 36 at the foremost end of the rail 2, and the reflecting panel 3 is fixed on the rail connecting plate at the rearmost end, so that accidental derailment of the radar calibration platform 1 is prevented from occurring from two ends of the rail.
In a specific implementation, the reflective panel 3 may comprise nine flat steel plates 201, and the back of the metal plate comprises 6T-shaped plate members 202 for fixing the metal plate to the fixing bracket 203. The fixed bracket 203 comprises 4 bracket plates, and the bottom of the bracket plate is vertically fixed with the rail connecting plate 36 at the tail end of the rail. The upper fixing plate 2031 and the middle fixing plate 2032 are connected and fixed to two T-shaped plate members 202 at the middle position and the bottom position, respectively, and fix the fixing bracket 203 and the nine flat steel plates 201 together.
In a specific implementation, the rail car comprises two front traveling wheels 25, two rear traveling wheels 26, a servo motor 27, a servo controller 28, a battery pack 29, a power inverter 30 and a multistage transmission system. The two front road wheels 25 and the two rear road wheels 26 are secured to the lower frame cross plate 15 and the lower frame cross plate 14, respectively, by 4 identical suspension structures 32.
In the specific implementation, the driving shaft 31 in the multi-stage transmission system drives the two front driving wheels 25 through the left and right belts 49 respectively to drive the rail car to move and displace. A servo controller 28 is arranged at the bottom of the right article placing mounting frame 13, and a power inverter 30 is arranged on the left article placing mounting frame 12. The frame vertical plates 16 and 17 in the lower layer of the cross frame are respectively provided with symmetrical middle shaft support plates 38 for fixing the middle shaft of the central transmission gear. The battery pack mounting plate 39 can be selectively mounted on the middle shaft support plate, and is used for mounting and fixing different types of power batteries together with the extension battery pack mounting plate 50 which can be selectively mounted on the lower-layer framework.
In a specific implementation, the servo motor 27 is fixed on the motor fixing plate 41, and the transmission gear 40 is a gear sleeved on the rotating shaft of the servo motor 27. The central rotating shaft 43 is fixed with the mounting plate through a central rotating shaft fixer 42, the transmission gear 44 and the transmission gear 45 both use the central rotating shaft 43 as an axis, wherein the transmission gear 44 is driven by the transmission gear 40, simultaneously drives the central rotating shaft 43 and the transmission gear 45 to move, and then drives the main shaft 48 and the driving rotating shaft 31 which is integrally assembled with the main shaft 48 to rotate together through the transmission gear 46, and the main shaft 48 is fixed at the bottom of the vertical plate of the lower layer frame through the main shaft fixer. The driving rotating shaft 31 finally drives the front driving wheel 25 to move through the left belt 49 and the right belt 49 respectively, so that the displacement of the radar calibration platform 1 on the track 2 is realized. Through the multistage transmission system, the mode that adopts drive wheel (axle) group and belt pulley to link together servo motor and action wheel promptly, the transmission power adopts the coaxial speed reduction design of tertiary, and gear 44, 45 adopt with the coaxial mounting means of central pivot 43, compare the speed reduction design of three gears, have increased the drive ratio, bear the ability greatly increased also simultaneously of load, save installation space. The belt transmission has the characteristics of simple structure, stable transmission, low price, buffering, shock absorption and the like, the total transmission ratio can reach 1:10.5, the displacement of the whole radar calibration platform 1 is driven by a small motor, and the purposes of energy conservation, high efficiency and cost reduction are achieved.
Referring to fig. 8, it is an exploded view of the rail connection plate and the bracket provided in the embodiment of the present invention.
In the embodiment of the utility model provides an in, support orbital support 33 is the altitude mixture control support for the adjustment track height.
In a specific embodiment, the bracket 33 is composed of a fixed plate 3301, a screw sleeve 3302, an adjusting nut 3303, an adjusting screw, 3304, and a connecting bolt 3305. Can control the horizontal position at track board connecting plate 36 both ends through adjusting screw 3304's altitude mixture control to adjust control to the horizontal position of whole track together with track support frame 34, this is to reducing the earlier stage construction requirement in track installation place, and the flexibility that improves track installation has important meaning, guarantees the degree of accuracy of radar calibration.
In the embodiment of the utility model, the radar calibration platform includes: and if the deviation between the laser distances measured by the laser distance measuring sensors received by the calculation control device exceeds a distance deviation threshold value, the calculation control device sends out a corresponding prompt.
In specific implementation, the deviation among a plurality of laser distances obtained at the same specified position exceeds a preset distance deviation threshold value, which indicates that the horizontal state or radar ranging direction of the radar calibration platform 1 and the radar calibration platform are just opposite to the reflection panel 3, and the radar calibration platform needs to be corrected, so that the accuracy of radar calibration is improved.
In the embodiment of the utility model provides an in, the radar support with swing joint between the railcar, if the deviation of the horizontality of radar exceeds the horizontal deviation threshold value, then calculation controlling means control radar support or/and altitude mixture control support carry out position adjustment.
In specific implementation, position adjustment is carried out until the deviation between the horizontal state and the horizontal of the radar is smaller than a horizontal deviation threshold value; when the deviation between the laser distances exceeds a distance deviation threshold value, the calculation control device can also control the radar support to perform position adjustment until the deviation between the laser distances is smaller than the distance deviation threshold value.
In the embodiment of the utility model, calculation controlling means with radar on a plurality of assigned positions survey and the reflection panel between the distance and the deviation between the laser distance fit and obtain calibration curve, calibrate the radar according to calibration curve.
In specific implementation, under ideal conditions of a laboratory in which a microwave absorbing material is arranged in an electromagnetic shielding chamber, a laser distance measured by laser and a distance value obtained after processing the laser distance are very close to an actual distance and can be used as a reference for calibration and calibration.
In a specific implementation, in the case that a plurality of laser ranging sensors exist, laser distances at the same designated position may be integrated, for example, an average value is calculated, so as to avoid inaccuracy of a result caused by an error of a certain laser ranging sensor, and then a deviation for fitting is calculated. The calibration curve obtained by fitting represents the corresponding relationship between the distance measured by the radar and the calibration distance (or the average value calculated by the laser distance), the distance measured by the radar can determine the corresponding calibration distance through the corresponding relationship of the calibration curve in practical application, and after the calculation such as addition or subtraction is carried out between the measured distance and the calibration distance, the radar can output the calibrated distance value which is very close to the real distance.
Claims (7)
1. An automated calibration and calibration system for radar, comprising: test track, reflection panel, calculation controlling means and radar calibration platform, wherein:
the test track comprises at least two tracks and a bracket for supporting the tracks;
the radar calibration platform comprises a rail car, a radar support, an object placing mounting rack and a laser ranging sensor, wherein the rail car comprises a servo controller, a transmission gear, a belt and a driving wheel, the servo controller is used for controlling the transmission gear to rotate, and the transmission gear drives the driving wheel to rotate through the belt so that the radar calibration platform moves on a test track; the radar bracket is arranged on the rail car and used for bearing a radar; the laser distance measuring sensor is used for measuring the laser distance between the laser distance measuring sensor and the reflecting panel; the storage mounting rack is arranged on the rail car and used for bearing the computing control device;
the reflection panel is arranged facing the radar calibration platform;
and the calculation control device is used for respectively controlling the distance between the radar and the reflection panel measured by the laser ranging sensor when the radar calibration platform reaches the specified position, and feeding back the distance and the laser distance between the radar and the reflection panel measured by the radar to the radar for calibration after receiving the distance and the laser distance between the radar and the reflection panel.
2. The system for automatic calibration and calibration of radar according to claim 1, wherein the radar support is arranged to enable the range finding direction of the loaded radar to face the reflection panel within a range of specified positions, and the radar support is a flange-fixed type radar test support.
3. The system of claim 2, wherein the radar calibration platform comprises: and if the deviation between the laser distances measured by the laser distance measuring sensors received by the calculation control device exceeds a distance deviation threshold value, the calculation control device sends out a corresponding prompt.
4. The radar automated calibration system of claim 3, wherein the radar calibration platform further comprises: the horizontal sensor is in communication connection with the calculation control device and is used for detecting the horizontal state of the target object, and if the deviation of the horizontal state of the target object exceeds a horizontal deviation threshold value, the calculation control device sends out a corresponding prompt; the target object comprises a radar and a laser ranging sensor.
5. The system of claim 4, wherein the support for the track is a height adjustment support for adjusting the height of the track.
6. The automatic radar calibration and calibration system according to claim 5, wherein the radar support is movably connected with the rail car, and if the deviation of the horizontal state of the radar exceeds a horizontal deviation threshold value, the calculation control device controls the radar support or/and the height adjustment support to perform position adjustment.
7. The system of claim 6, further comprising: the interior surface of the electromagnetic shielding chamber is provided with a microwave absorption material, and the test track, the reflection panel and the radar calibration platform are all arranged in the electromagnetic shielding chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400906.3U CN212207664U (en) | 2020-03-26 | 2020-03-26 | Automatic calibration and calibration system for radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400906.3U CN212207664U (en) | 2020-03-26 | 2020-03-26 | Automatic calibration and calibration system for radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212207664U true CN212207664U (en) | 2020-12-22 |
Family
ID=73825436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020400906.3U Active CN212207664U (en) | 2020-03-26 | 2020-03-26 | Automatic calibration and calibration system for radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212207664U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267778A (en) * | 2021-06-18 | 2021-08-17 | 珠海上富电技股份有限公司 | Vehicle-mounted millimeter wave radar factory detection device and method |
| CN113296069A (en) * | 2021-06-21 | 2021-08-24 | 深圳市宏电技术股份有限公司 | Radar calibration device |
-
2020
- 2020-03-26 CN CN202020400906.3U patent/CN212207664U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267778A (en) * | 2021-06-18 | 2021-08-17 | 珠海上富电技股份有限公司 | Vehicle-mounted millimeter wave radar factory detection device and method |
| CN113296069A (en) * | 2021-06-21 | 2021-08-24 | 深圳市宏电技术股份有限公司 | Radar calibration device |
| CN113296069B (en) * | 2021-06-21 | 2023-12-08 | 深圳市宏电技术股份有限公司 | Radar calibration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111337892A (en) | Radar automatic calibration and calibration method and system | |
| CN212207664U (en) | Automatic calibration and calibration system for radar | |
| CN102590796B (en) | Self-adaptive radar calibrating device for sedan | |
| CN102166715A (en) | Staircase portal frame assembling fixture and assembling method thereof | |
| CN210072074U (en) | Automatic measuring device for vehicle overall dimension | |
| CN207215086U (en) | A kind of Portable non-contact rail tunnel Clearance Detection | |
| CN111874503B (en) | Device and method for four-way shuttle dispatching and cargo calibration | |
| CN109974825B (en) | Adjustable modular vehicle weighing platform | |
| CN213121133U (en) | Automobile body wheel arch height detection device | |
| CN111912339B (en) | Laser ranging device and method for airplane | |
| CN117181870B (en) | Photovoltaic support bending device | |
| CN205593762U (en) | Synchronous random adjustable image formula four -wheel aligner calibrating device in position | |
| CN114136669B (en) | Wheel rotating device and positioning detection compensation method thereof | |
| CN114353729B (en) | Calibration method and system for vehicle center line | |
| CN113358094B (en) | Vertical detection method for bearing wall of building construction | |
| CN208847126U (en) | A kind of automobile brake disc fastening bolt segment difference rapid measurement device | |
| CN113636488A (en) | Double-synchronous-belt lifting mechanism | |
| CN113927290B (en) | System and method for correcting installation position of passenger car sensor | |
| CN111648629A (en) | Avoidance-free mechanical parking equipment | |
| CN216479979U (en) | Adjustable bracket for radar installation | |
| CN209416189U (en) | A kind of PC track beam bottom board inspection slide calliper rule | |
| CN209231510U (en) | A kind of fixed platform for Laser Distance Measuring Equipment production line | |
| CN220062883U (en) | Laser calibration detection device | |
| CN114354206B (en) | Triaxial calibrating rod | |
| CN218766996U (en) | Static calibration device of laser high-speed benkelman deflectometer speed measurement sensor angle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |