Millimeter wave radar angle calibration device

Abstract

The utility model discloses a millimeter-wave radar angle calibration device, which relates to the technical field of millimeter-wave radars, and comprises a mounting seat and a millimeter-wave radar main body, a fixing mechanism is arranged on the mounting seat, the mounting seat comprises a mounting plate and a movable chuck, a fixed chuck matched with the movable chuck is arranged on the mounting plate, and the fixed chuck is arranged on the mounting plate. A lead screw is fixedly mounted at the top of the movable chuck, a lug plate is arranged on the upper end face of the mounting plate, the fixing mechanism comprises an internal threaded sleeve and a knob, the internal threaded sleeve is mounted on the lug plate and rotationally connected with the lug plate, the internal threaded sleeve sleeves the lead screw and is in threaded connection with the lead screw, and the knob is fixedly mounted at the top of the internal threaded sleeve. The radar clamping structure has the advantages of high stability, looseness prevention and multi-dimensional adjustment, and solves the problem that a traditional clamping structure is easy to cause radar looseness and displacement under complex working conditions, and detection accuracy is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to millimeter wave radar technical field, concretely is a kind of millimeter wave radar angle calibration device. BACKGROUND

[0002] As a kind of high-precision detection equipment, millimeter wave radar has a wide range of applications in many fields such as automatic driving of car, aviation navigation, weather forecasting. With the development of science and technology, higher requirements are put forward for the accuracy and stability of millimeter wave radar angle calibration. However, the existing millimeter wave radar installation and calibration device has some shortcomings.

[0003] The traditional millimeter wave radar installation method adopts a simple clamping structure. This design is prone to radar loosening displacement when facing complex working conditions, such as bumps or vibrations during vehicle driving, thereby affecting its detection accuracy. In addition, many existing devices lack effective anti-loosening measures, which may cause angle deviation of the radar after long-term use. This not only reduces the accuracy of measurement, but also may affect the safety system that relies on these data to make decisions, for example, the millimeter wave radar angle calibration device disclosed in the authorized announcement No. CN221507131U. When calibrating the radar, the device fixes the millimeter wave radar by tightening the ball head with a bolt. However, when the bolt is tightened, the ball head will rotate under the action of friction, affecting the calibration accuracy. Moreover, the bolt lacks a check valve, which may loosen during driving, affecting the accuracy of the millimeter wave radar. Therefore, a millimeter wave radar angle calibration device is needed to solve the above problems. SUMMARY

[0004] The utility model aims at providing a kind of millimeter wave radar angle calibration device, with the advantages of high stability, anti-loosening and multidimensional adjustment, solves the problem that traditional clamping structure is prone to radar loosening displacement under complex working conditions, affects detection accuracy.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of millimeter wave radar angle calibration device, including mounting seat and millimeter wave radar main body, fixed mechanism is provided on mounting seat;

[0006] The mounting seat includes a mounting plate and a movable chuck, the mounting plate is provided with a fixed chuck matched with the movable chuck, the top of the movable chuck is fixedly installed with a lead screw, the upper end surface of the mounting plate is provided with an ear plate, the fixed mechanism includes an internal thread sleeve and a knob, the internal thread sleeve is installed on the ear plate and is rotatably connected therewith, the internal thread sleeve is sleeved on the lead screw and is threadedly connected therewith, and the knob is fixedly installed on the top of the internal thread sleeve.

[0007] Further, the side end surface of the internal thread sleeve is provided with a ratchet wheel, the lower end surface of the ear plate is fixedly installed with a rotating shaft, and the rotating shaft is provided with a pawl matched with the ratchet wheel.

[0008] Further, the rotating shaft is sleeved with a torsion spring, the bottom of the rotating shaft is provided with a limiting plate, and the limiting plate is provided with a limiting rod matched with the torsion spring.

[0009] Further, the upper end surface of the fixed chuck is provided with a first hemispherical groove, the lower end surface of the movable chuck is provided with a second hemispherical groove, the back surface of the millimeter wave radar body is provided with a connecting rod, and the tail end of the connecting rod is provided with a ball head matched with the first hemispherical groove and the second hemispherical groove.

[0010] Further, the inner end surfaces of the first hemispherical groove and the second hemispherical groove are provided with elastic pads made of rubber or silica gel.

[0011] Further, the front end surface of the mounting plate is provided with a guide sliding rail, and the bottom of the movable chuck is provided with a guide sliding groove matched with the guide sliding rail.

[0012] Further, the front end surface of the millimeter wave radar body is provided with a radar probe, and the back surface of the millimeter wave radar body is provided with an inclination display screen.

[0013] Compared with the prior art, the utility model has the advantages of the following:

[0014] 1. The utility model discloses a threaded transmission structure of a lead screw and an internal thread sleeve, and the rotation control of a knob is combined to accurately clamp the ball head connecting rod of the millimeter wave radar by the movable chuck and the fixed chuck, rigid fixation is formed, the loosening problem caused by mechanical clearance or vibration in the traditional clamping is solved, the cooperation of the ratchet and pawl mechanism and the torsion spring effectively locks the counterclockwise rotation of the internal thread sleeve, prevents the thread from retreating due to bumping during the driving of the vehicle, meanwhile, the rubber or silica gel elastic pad arranged in the hemispherical groove generates damping effect by increasing the friction force, further avoids the deviation of the radar due to self weight during the adjustment process, and the cooperation of these structures ensures that the radar can still be stably clamped under complex working conditions, and the long-term reliability after calibration is significantly improved.

[0015] 2. The utility model discloses a design that a first hemispherical groove and a second hemispherical groove are combined to form a spherical groove, so that the millimeter wave radar body can be adjusted in multiple degrees of freedom angles such as pitching and yawing around the ball center, the limitation of the cooperation of the guide sliding rail and the guide sliding groove restricts the movable chuck to move only in the vertical direction, the hemispherical groove is accurately aligned during the clamping process, the clamping deviation caused by misalignment is avoided, the inclination display screen is directly integrated on the back of the radar, real-time feedback of the current inclination value is realized, and the operator can quickly complete the calibration without relying on external measuring tools, a series of designs simplify the adjustment steps, realize the integration of angle fine adjustment and state monitoring, and greatly improve the calibration efficiency and operation convenience. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the utility model;

[0017] Figure 2 It is the explosion drawing of the utility model;

[0018] Figure 3 It is the plan view of the utility model;

[0019] Figure 4 It is the Figure 3 A-A section view of the utility model;

[0020] Figure 5 It is the fixed mechanism structure schematic view of the utility model;

[0021] Figure 6 It is the movable chuck structure schematic view of the utility model.

[0022] In the drawing: 1, mounting seat;101, mounting plate;1011, fixed chuck;1012, guide slide rail;1013, first half-spherical groove;1014, ear plate;102, movable chuck;1021, second half-spherical groove;1022, screw rod;1023, guide sliding groove;103, elastic pad;2, millimeter wave radar main body;201, radar probe;2011, connecting rod;2013, ball head;202, inclination display screen;3, fixed mechanism;301, internal thread sleeve;3011, ratchet wheel;3012, knob;302, pawl;303, rotating shaft;3031, limiting plate;3032, limiting rod;304, torsion spring. Specific implementation

[0023] Please refer to Figures 1-6 A kind of millimeter wave radar angle calibration device, including mounting seat 1 and millimeter wave radar main body 2, mounting seat 1 is provided with fixed mechanism 3;

[0024] Mounting seat 1 includes mounting plate 101 and movable chuck 102, mounting plate 101 is provided with fixed chuck 1011 matched with movable chuck 102, the top of movable chuck 102 is fixedly installed with screw rod 1022, the upper end surface of mounting plate 101 is provided with ear plate 1014, fixed mechanism 3 includes internal thread sleeve 301 and knob 3012, internal thread sleeve 301 is installed on ear plate 1014 and is rotationally connected with it, internal thread sleeve 301 is sleeved on screw rod 1022 and is threadedly connected with it, knob 3012 is fixedly installed on the top of internal thread sleeve 301.

[0025] By rotating knob 3012 clockwise, drive internal thread sleeve 301 to rotate, so that movable chuck 102 is close to fixed chuck 1011, so that the adjusted millimeter wave radar main body 2 is clamped and fixed, avoids the loosening displacement of the adjusted millimeter wave radar, influence millimeter wave radar precision.

[0026] Further, the side end surface of the internally threaded sleeve 301 is provided with a ratchet wheel 3011, and the lower end surface of the ear plate 1014 is fixedly provided with a rotating shaft 303, and the rotating shaft 303 is provided with a pawl 302 matched with the ratchet wheel 3011.

[0027] The pawl 302 is clamped on the ratchet wheel 3011, so that when the equipment shakes after the internally threaded sleeve 301 is tightened, the internally threaded sleeve will not loosen, thereby avoiding loosening of the millimeter wave radar during vehicle operation.

[0028] Further, the rotating shaft 303 is sleeved with a torsion spring 304, and the bottom of the rotating shaft 303 is provided with a limiting plate 3031, and the limiting plate 3031 is provided with a limiting rod 3032 matched with the torsion spring 304.

[0029] The torsion spring 304 rotates the pawl 302 around the rotating shaft 303, and the pawl 302 is always in contact with the ratchet wheel 3011, so that the internally threaded sleeve 301 can be freely tightened clockwise, but cannot be rotated counterclockwise. After the pawl 302 is pushed away, the internally threaded sleeve 301 can be rotated counterclockwise, so as to adjust the angle of the millimeter wave radar.

[0030] Further, the upper end surface of the fixed clamp head 1011 is provided with a first hemispherical groove 1013, the lower end surface of the movable clamp head 102 is provided with a second hemispherical groove 1021, the back surface of the millimeter wave radar main body 2 is provided with a connecting rod 2011, and the end of the connecting rod 2011 is provided with a ball head 2013 matched with the first hemispherical groove 1013 and the second hemispherical groove 1021.

[0031] When the movable clamp head 102 approaches the fixed clamp head 1011, the first hemispherical groove 1013 and the second hemispherical groove 1021 merge into a spherical groove matched with the ball head 2013, so that the millimeter wave radar main body 2 rotates around the center of the spherical groove, and multidimensional angle adjustment can be performed.

[0032] Further, the inner end surfaces of the first hemispherical groove 1013 and the second hemispherical groove 1021 are provided with elastic pads 103 made of rubber or silicone.

[0033] By arranging the elastic pads 103 in the first hemispherical groove 1013 and the second hemispherical groove 1021, the friction force of the movable clamp head 102 and the fixed clamp head 1011 on the ball head 2013 is increased, thereby generating a damping effect, avoiding that the millimeter wave radar immediately turns down under the action of gravity after the adjustment is completed, and affecting the stability of the adjustment.

[0034] Further, the front end surface of the mounting plate 101 is provided with a guide rail 1012, and the bottom of the movable clamp head 102 is provided with a guide groove 1023 matched with the guide rail 1012.

[0035] Through the cooperation of the guide chute 1023 and the guide rail 1012, the movable clamp head 102 can only move up and down and cannot produce front-back and left-right deviation, thereby improving the precision of the alignment of the first half-spherical groove 1013 and the second half-spherical groove 1021 and improving the stability during fixing.

[0036] Further, the front end face of the millimeter wave radar main body 2 is provided with a radar probe 201, and the back face of the millimeter wave radar main body 2 is provided with an inclination display screen 202.

[0037] By being provided with the inclination display screen 202 inclined upward on the back face of the millimeter wave radar, the current inclination of the millimeter wave radar main body 2 is displayed in real time, thereby facilitating the angle calibration thereof.

[0038] In use, the ball head 2013 at the end of the connecting rod 2011 on the back of the millimeter wave radar body 2 is placed between the first half-spherical groove 1013 and the second half-spherical groove 1021 of the movable chuck 102, the inner threaded sleeve 301 is slightly screwed, so that the ball head 2013 can rotate freely within a certain range under pressure, at this time, the millimeter wave radar body 2 can be adjusted in multiple dimensions around the ball center on the first half-spherical groove 1013, the operator manually rotates the millimeter wave radar body 2 to reach the desired angle position according to the actual needs, and in the adjustment process, the inclination display screen 202 on the back of the millimeter wave radar body 2 can be observed to realize real-time understanding of the current inclination of the millimeter wave radar body 2 and provide a reference for angle adjustment, the knob 3012 is rotated clockwise, the inner threaded sleeve 301 fixedly connected with the knob 3012 is rotated on the ear plate 1014, because the inner threaded sleeve 301 is screwed with the lead screw 1022, so that the lead screw 1022 drives the movable chuck 102 to move towards the fixed chuck 1011 when the inner threaded sleeve 301 rotates, with the movement of the movable chuck 102, the second half-spherical groove 1021 gradually approaches and merges with the first half-spherical groove 1013, and finally the ball head 2013 is wrapped in the spherical groove composed of the first half-spherical groove 1013 and the second half-spherical groove 1021, so that the millimeter wave radar body 2 is clamped and fixed, in this process, the guide sliding groove 1023 and the guide sliding rail 1012 cooperate to ensure that the movable chuck 102 can only move up and down, improve the accuracy of the alignment of the first half-spherical groove 1013 and the second half-spherical groove 1021, and further improve the stability during fixing, the inner threaded sleeve 301 is provided with a ratchet wheel 3011 on the side end face, the shaft 303 fixedly installed on the lower end face of the ear plate 1014 is provided with a pawl 302 matched with the ratchet wheel 3011, when the inner threaded sleeve 301 is screwed, the pawl 302 will be clamped on the ratchet wheel 3011, even if the device shakes, the inner threaded sleeve 301 will not loosen counterclockwise, which avoids loosening of the millimeter wave radar during vehicle operation, because the torsional spring 304 sleeved on the shaft 303 rotates the pawl 302 around the shaft 303 and always keeps in close contact with the ratchet wheel 3011, so that the inner threaded sleeve 301 can only be screwed clockwise and cannot be rotated counterclockwise, only after the pawl 302 is pushed away, the inner threaded sleeve 301 can be rotated counterclockwise, so as to adjust the angle of the millimeter wave radar subsequently.

[0039] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A millimeter-wave radar angle calibration device, comprising a mounting base (1) and a millimeter-wave radar body (2), characterized in that: The mounting base (1) is provided with a fixing mechanism (3); The mounting base (1) includes a mounting plate (101) and a movable chuck (102). The mounting plate (101) is provided with a fixed chuck (1011) that cooperates with the movable chuck (102). A lead screw (1022) is fixedly installed on the top of the movable chuck (102). An ear plate (1014) is provided on the upper end face of the mounting plate (101). The fixing mechanism (3) includes an internal thread sleeve (301) and a knob (3012). The internal thread sleeve (301) is mounted on the ear plate (1014) and rotatably connected to it. The internal thread sleeve (301) is sleeved on the lead screw (1022) and threadedly connected to it. The knob (3012) is fixedly installed on the top of the internal thread sleeve (301).

2. The millimeter-wave radar angle calibration device as described in claim 1, characterized in that: The side end face of the internal threaded sleeve (301) is provided with a ratchet (3011), and the lower end face of the ear plate (1014) is fixedly installed with a rotating shaft (303). The rotating shaft (303) is provided with a pawl (302) that cooperates with the ratchet (3011).

3. The millimeter-wave radar angle calibration device as described in claim 2, characterized in that: A torsion spring (304) is sleeved on the rotating shaft (303), and a limit plate (3031) is provided at the bottom of the rotating shaft (303). A limit rod (3032) that cooperates with the torsion spring (304) is provided on the limit plate (3031).

4. The millimeter-wave radar angle calibration device as described in claim 1, characterized in that: The upper end face of the fixed clamp (1011) is provided with a first hemispherical groove (1013), the lower end face of the movable clamp (102) is provided with a second hemispherical groove (1021), the back of the millimeter-wave radar body (2) is provided with a connecting rod (2011), and the end of the connecting rod (2011) is provided with a ball head (2013) that cooperates with the first hemispherical groove (1013) and the second hemispherical groove (1021).

5. The millimeter-wave radar angle calibration device as described in claim 4, characterized in that: The inner end faces of the first hemispherical groove (1013) and the second hemispherical groove (1021) are provided with elastic pads (103), which are made of rubber or silicone.

6. The millimeter-wave radar angle calibration device as described in claim 4, characterized in that: The front end face of the mounting plate (101) is provided with a guide slide rail (1012), and the bottom of the movable clamp (102) is provided with a guide groove (1023) that cooperates with the guide slide rail (1012).

7. The millimeter-wave radar angle calibration device as described in claim 1, characterized in that: The front end of the millimeter-wave radar body (2) is provided with a radar probe (201), and the back end of the millimeter-wave radar body (2) is provided with an angled display screen (202).

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