CN201016709Y - Water-proof damp-proof anti-dust totally enclosed type full view vision sensor - Google Patents
Water-proof damp-proof anti-dust totally enclosed type full view vision sensor Download PDFInfo
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- CN201016709Y CN201016709Y CNU2007201157091U CN200720115709U CN201016709Y CN 201016709 Y CN201016709 Y CN 201016709Y CN U2007201157091 U CNU2007201157091 U CN U2007201157091U CN 200720115709 U CN200720115709 U CN 200720115709U CN 201016709 Y CN201016709 Y CN 201016709Y
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- reflector
- vision sensor
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Abstract
The utility model provides a fully enclosed panorama vision sensor which is waterproof, dampproof and dustproof. The utility model consists of a base, a canister, a terminal disc, a reflector, a bracket, a camera and a heating resistance wire; the base is taken as the basic fixing platform and the bracket and the heating resistance wire are fixed on the base; the base is integrated with the terminal disc by the canister; the camera is installed on the bracket; the reflector is clipped on the terminal disc. The utility model has a small volume, a light weight and a compact structure; the utility model can work in atrocious environments such as low-temperature or high-humidity environments, etc. and the utility model is a fully enclosed panorama vision sensor.
Description
(I) technical field
The utility model relates to a sensor field, concretely relates to dampproofing and waterproofing of sensor technical field that prevents dust.
(II) background of the invention
Compared with the traditional visual environment perception system, the visual field is smaller, the panoramic imaging refers to spherical imaging larger than a hemispherical visual field (360 degrees multiplied by 180 degrees), the panoramic visual system utilizes a single-viewpoint hyperboloid reflector to image for one time through a CCD imaging unit and is larger than the hemispherical visual field (360 degrees multiplied by 180 degrees), the target information of the whole scene is acquired for one time, and a set of follow-up system does not need to be added to a photoelectric tracking system.
The cameras of the panoramic vision sensor all have a working temperature range, and the working temperature of a common camera is minus ten degrees to seventy degrees centigrade. In the north, when the outdoor temperature reaches about minus thirty ℃ in winter, the camera cannot normally work, so that the outdoor use of the panoramic vision sensor is limited, and the fog phenomenon can occur in the environment with high humidity in the camera lens and the single-viewpoint hyperboloid reflector; meanwhile, the panoramic vision comprises precise optical components such as a reflector, and a lens is easily polluted by dust to influence system imaging.
Disclosure of the invention
An object of the utility model is to provide a small, light in weight, compact structure to can work the totally closed dampproofing and waterproofing totally enclosed panorama visual sensor in abominable environment such as low temperature, high humidity.
The purpose of the utility model is realized like this: the camera consists of a base, a cylinder, a top plate, a reflector, a bracket, a camera and a heating resistance wire, wherein the bracket and the heating resistance wire are fixed on the base; the base and the top disc are connected into a whole through the cylinder body; the camera is arranged on the bracket; the reflector is arranged on the top disc.
The utility model discloses some structural feature are in addition:
1. a small top disk ring is arranged on the top disk, and an inner groove for mounting the reflector and an outer groove for connecting the cylinder body are arranged on the small top disk ring;
2. the reflector is a hyperboloid reflector, and a reflecting film is plated on the mirror surface;
3. the bracket is composed of two identical sub-brackets, and a groove and a strip-shaped hole are formed in the middle of each sub-bracket;
4. the middle of the base is provided with 4 fixing support sunk through holes and two positioning holes for fixing the heating resistance wires, the surface is provided with an annular chassis groove for fixing the cylinder, the bottom is provided with an air inlet valve and an air outlet valve, and the side part is provided with an aviation plug-in;
5. the cylinder body is a cylindrical glass cylinder body.
The utility model discloses a catadioptric panorama sensor has overcome traditional vision system and has obtained panoramic image's shortcoming to adopt totally closed technical scheme to solve panorama vision sensor and dread and dread dirt and panorama vision sensor's camera part receives the low temperature restriction and can not normally the problem of work.
The hyperboloid reflector of the utility model is processed by glass materials, the mirror surface meets the hyperboloid equation, the reflectivity is enhanced by coating the reflecting film on the mirror surface, and the bottom of the hyperboloid reflector is connected with the top disc through glue; the cylinder body is made of glass materials, the top end of the cylinder body is connected with the top disc through glue, and the bottom of the cylinder body is connected with the base through the glue; the top plate, the bracket and the base are all made of aluminum materials; the aviation plug-in is arranged at the side part of the base, the air inlet valve and the air outlet valve are arranged at the bottom of the base, the whole structure is closed, the enclosed panoramic vision sensor is filled with nitrogen, the aviation plug-in with better air tightness is selected to achieve the waterproof, moistureproof and dustproof effects of the totally enclosed panoramic vision sensor, and whether the resistance wire is heated to increase the temperature or not can be determined according to the temperature condition in the totally enclosed panoramic vision sensor so as to ensure the working temperature of the camera; the axis of the hyperboloid reflector, the axis of the barrel and the axis of the camera coincide, and the optical center of the camera lens coincides with the far focus of the hyperboloid where the hyperboloid reflector is located.
The totally-enclosed panoramic vision sensor is characterized in that an aviation plug-in is installed on the side face of the base, and a power line, a video signal line and a heating resistance wire power supply of the camera are respectively connected with the camera and the heating resistance wire inside the totally-enclosed panoramic vision sensor through the aviation plug-in.
According to the totally-enclosed panoramic vision sensor, the air inlet valve and the air outlet valve are arranged at the bottom of the base, nitrogen is filled into the whole enclosed panoramic vision sensor, and whether the resistance wire is heated to increase the temperature or not can be determined according to the temperature condition in the totally-enclosed panoramic vision sensor so as to ensure the working temperature of the camera.
The utility model discloses a totally closed mode, the operational environment temperature of camera is improved to internally mounted heating resistor silk. The inner part is filled with nitrogen, so that the fogging phenomenon of a camera lens and a single-viewpoint hyperboloid reflector can be avoided. The panoramic vision sensor can be connected with a computer by adopting an image acquisition card, realizes the acquisition and processing of images by software programming and can also be applied to a DSP embedded development system. The panoramic vision sensor is small in size, light in weight and compact in structure, can be used for panoramic real-time monitoring of a robot panoramic vision system, a video conference, a bank, traffic and the like, and can work in severe environments such as low temperature, high humidity and the like.
(IV) description of the drawings
Fig. 1 is a schematic view of an optical system of a panoramic imaging system.
Fig. 2 is a schematic structural diagram of the present invention.
(V) detailed description of the preferred embodiments
The invention will be further described with reference to the following drawings and specific embodiments:
example (b):
the camera comprises a base, a barrel, a top plate, a reflector, a support, a camera and a heating resistance wire, wherein the support and the heating resistance wire are fixed on the base; the base and the top disc are connected into a whole through the cylinder; the camera is arranged on the bracket; the reflector is arranged on the top disc.
With reference to fig. 1-2, fig. 1 is a schematic view of an optical system of a panoramic imaging system; fig. 2 is a front view of the present invention. In fig. 1: f' is the near focus of the hyperboloid where the hyperboloid reflector is located; and F is the far focus of the hyperboloid where the hyperboloid reflector is located. The light rays from the extension line to the near focus are converged at the far focus after being reflected on the hyperboloid reflector surface, and the optical center of the camera lens is superposed with the far focus, so that a clear image is obtained.
The top disk shape is shown in fig. 2, and is composed of an aluminum material. The inner groove of the top disc small ring 1a plays a role in mounting the hyperboloid reflector 2, the inner groove of the top disc small ring 1a is slightly larger than the bottom of the hyperboloid reflector 2, and the hyperboloid reflector 2 can be firmly adhered to the top disc 1 by glue. The external groove of the top disc small ring 1a plays a role of connecting the cylinder body 4 and is glued by glue.
The hyperboloid reflector 2 is made of glass materials, the mirror surface meets a hyperboloid equation, the reflectivity is enhanced by coating a reflecting film on the mirror surface, and the bottom of the hyperboloid reflector is connected with the top disc through glue. The hyperboloid mirror dimensions were determined as follows:
selecting the pixel size of CCD imaging unit of camera as d ccd The focal length of the lens is f, the two indexes are fixed parameters, and the corresponding image pixel is r pix The focal length of the hyperboloid is 2e, the distance h between the rear end surface of the reflector and the perspective center of the camera lens is more than 2e, and the radius r of the rear end surface of the reflector can be roughly determined by the formula (1) top ＝d top A diameter d can be taken for convenient processing top Is an integer.
The reflector is a rotating curved surface, can be analyzed in an XOY plane, and has the following hyperbolic equation:
it can be reduced to the form of parametric equations:
x＝btant
t＝(-t 0 ，t 0 )(3)
y＝asect
let a = kb, and
and the maximum field angle is alpha, as shown in FIG. 1, the coordinate of the point P is easy to know as (r) top ，e+r top cot (. Pi. - α)) i.e
Can be substituted by the formula (2) to obtain,
only one unknown number k is in the above formula, and Matlab can be used for assisting in solving. An invalid solution less than zero is removed, and k = k can be solved 0 ，
. A hyperbolic equation can be obtained by substituting the formula (4).
The cylinder 3 is made of a glass material and can protect the hyperboloid mirror 2 and the camera 6. The height of the cylinder 3 is determined by the focal length of the hyperboloid on which the hyperboloid reflector 2 is positioned, the length of the cylinder 3 recessed into the top plate and the base 5, and the distance of the top effective part of the hyperboloid reflector 2 from the top plate.
The holder 4 is formed by two identical sub-holders. The middle of each sub-bracket is provided with a groove 4a, the height of the groove is slightly larger than the protruding fixing part of the camera 6, the depth is to ensure that the distance inside the groove between the two sub-brackets is larger than the width of the camera 6 by 3-4 mm, and the camera can be finely adjusted in the x-axis direction through the screwing depth of two screws for fixing the camera 6. The width of the strip-shaped hole 4b is slightly larger than the diameter of the screw hole of the fixed part of the camera 6, and the length is about 10 mm, so that the camera 6 can be adjusted in the y-axis direction. After the position of the camera 6 is adjusted, the position of the camera 6 is fixed firmly by screws mounted on the camera fixing screw holes 4 c. The support is connected with the base 5 by screws which are fixed with counter bores of the base 5 through support fixing screw holes 4 d.
The base 5 is made of aluminum material, and 4 fixing supports with through holes are reserved in the middle. The upper surface of the base 5 is provided with an annular chassis groove 5b for fixing the cylinder 3 in a glue connection mode. The power line, the video signal line and the heating resistance wire power supply of the camera are respectively connected with the camera and the heating resistance wire inside the totally enclosed panoramic vision sensor through the aviation plug-in 5 a. An air inlet valve 5c and an air outlet valve 5d are arranged at the bottom of the base 5, and the closed panoramic vision sensor can be filled with nitrogen by utilizing the two valves. The totally enclosed panoramic vision sensor is totally enclosed and can achieve the effects of water resistance, moisture resistance and dust prevention.
The heating resistance wire 7 is used for heating, and when the internal temperature of the totally enclosed panoramic vision sensor is lower than the working temperature required by the camera, the heating resistance wire can be powered to ensure that the internal temperature of the totally enclosed panoramic vision sensor meets the working temperature requirement of the camera.
Claims (6)
1. A waterproof, moistureproof and dustproof totally enclosed panoramic vision sensor comprises a base, a cylinder body and a top plate, and is characterized by also comprising a reflector, a bracket, a camera and a heating resistance wire, wherein the bracket and the heating resistance wire are fixed on the base; the base and the top disc are connected into a whole through the cylinder; the camera is arranged on the bracket; the reflector is arranged on the top disc.
2. The waterproof, dampproof and dustproof totally enclosed panoramic vision sensor according to claim 1, characterized in that a top disc small ring is arranged on the top disc, and an inner groove for installing a reflector and an outer groove for connecting a cylinder are arranged on the top disc small ring.
3. The sensor of claim 2, wherein the reflector is a hyperboloid reflector, and the reflector surface is coated with a reflective film.
4. The waterproof, dampproof and dustproof totally enclosed panoramic vision sensor of claim 3, characterized in that the bracket is composed of two identical sub-brackets, and a groove and a strip-shaped hole are arranged in the middle of each sub-bracket.
5. The waterproof, dampproof and dustproof totally enclosed panoramic vision sensor of claim 4, characterized in that 4 fixing bracket countersunk holes and two positioning holes for fixing heating resistance wires are arranged in the middle of the base, the surface is provided with a ring-shaped base groove for fixing the cylinder, the bottom is provided with an air inlet valve and an air outlet valve, and the side is provided with an aviation plug-in.
6. The waterproof, dampproof and dustproof totally enclosed panoramic vision sensor of claim 5, characterized in that the cylinder is a cylindrical glass cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201157091U CN201016709Y (en) | 2007-03-06 | 2007-03-06 | Water-proof damp-proof anti-dust totally enclosed type full view vision sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201157091U CN201016709Y (en) | 2007-03-06 | 2007-03-06 | Water-proof damp-proof anti-dust totally enclosed type full view vision sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201016709Y true CN201016709Y (en) | 2008-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201157091U Expired - Fee Related CN201016709Y (en) | 2007-03-06 | 2007-03-06 | Water-proof damp-proof anti-dust totally enclosed type full view vision sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201016709Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108406854A (en) * | 2018-03-07 | 2018-08-17 | 深圳市东恒达智能科技有限公司 | A kind of robot visual sensor |
-
2007
- 2007-03-06 CN CNU2007201157091U patent/CN201016709Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108406854A (en) * | 2018-03-07 | 2018-08-17 | 深圳市东恒达智能科技有限公司 | A kind of robot visual sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20100306 |