CN102261906A - Inclined sensor and operating method thereof - Google Patents
Inclined sensor and operating method thereof Download PDFInfo
- Publication number
- CN102261906A CN102261906A CN 201110161331 CN201110161331A CN102261906A CN 102261906 A CN102261906 A CN 102261906A CN 201110161331 CN201110161331 CN 201110161331 CN 201110161331 A CN201110161331 A CN 201110161331A CN 102261906 A CN102261906 A CN 102261906A
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- inclination sensor
- collector lens
- image
- 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.)
- Pending
Links
Images
Abstract
The invention relates to an inclined sensor and an operating method thereof. The method comprises the following steps that: light rays which are emitted from a light source cover a free liquid surface of light-transmission liquid in a light-transmission container; the light rays which are transmitted or reflected from the free liquid surface pass through a condensing lens to form a light spot on a light-sensing surface of an image light-sensing device; and an operation processing device which is connected with the image light-sensing device detects the position azimuth and displacement, on the light-sensing surface of the image light-sensing device, of a central point of the light spot to obtain the inclination direction and an inclined angle value of the inclined sensor. Higher-quality image information can be obtained by processing image information, which is obtained by the image light-sensing device, by using image processing relevant algorithms; a method for calculating the center of an image is simple; the operation speed of the operation processing device is high; the reliability of the inclined sensor is improved; the structure of the inclined sensor is simple and convenient; and the cost of the inclined sensor is low.
Description
Technical field
The present invention relates to a kind of inclination sensor, especially a kind of inclination sensor and method of work thereof based on imageing sensor.
Background technology
In the prior art, detect the inclination angle of measuring instrument and adopt bubbler tube, the inner bubble of enclosing of this bubbler tube, and form electrode, measure the inclination angle by measurement of electrostatic capacity again.The periphery of this bubbler tube is made of glass, thereby the machining accuracy of having relatively high expectations, and in order to measure the inclination angle of both direction, the two axial lines direction is respectively wanted a bubbler tube in addition, and use cost is higher.Bubbler tube is subject to the influence of variation of ambient temperature simultaneously, must revise temperature variation.
Another kind of inclination sensor is to use the details in a play not acted out on stage, but told through dialogues striped to pass through by the outgoing parallel light, and its penetration mirror is turned to by the details in a play not acted out on stage, but told through dialogues striped, and the streak reflex that its light transmission container turns to the penetration mirror makes its striped imaging and by photosensitive device sensitization, calculates its inclination angle again.Its typical case's representative is Japanese TOPCON, uses this inclination sensor in total powerstation, and number of patent application is: 97110370.4, and publication number is: CN1167907.The method is to the configuration requirement height of details in a play not acted out on stage, but told through dialogues striped, and its stripe centerline needs equidistant configuration, and width of fringe needs to change the ground configuration along orthogonal directions, and need to ask the inclination angle of X-axis and Y direction by two kinds of diverse ways, its cost height, device is complicated, and calculates complicated.
It is the circular bubble of flat glass, interior Sheng ether alcohol mixeding liquid that the third inclination sensor is to use a bottom, its positioned beneath lens make the parallel circular bubble that sees through of LED light scioptics, according to the anaclasis principle, light is mapped to the most light of bubble center and is refracted at bubble surface and can not arrives silicon photoelectric diode and form the bubble shade, owing to its bubble shadow positions is along with instrument tilts to change, so just can calculate double-shaft tilt angle according to the respective electrical pressure reduction that produces on the silicon photoelectric diode.Its typical case representative is the measuring instrument of Japanese SOKKIA company, and this inclination sensor patent No. is: JP2007218722 (A).Though this inclination sensor volume is little, but can not ignore factors such as the asymmetry of support, material, temperature, if temperature change is above 7 ℃, then need to readjust the value at zero point, and the software setting of " value at zero point " exists the degree of accuracy of vision deviation and its adjustment also not high enough by observation personnel decision.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simple in structure, reliability and precision is higher, cost is lower and calculate easy inclination sensor and method of work thereof.
For solving the problems of the technologies described above, inclination sensor provided by the invention comprises: light transmission container 1, collector lens 2, light source 3, image photosensitive device 5 and arithmetic processing apparatus 6; Be provided with light-transmissive fluid in the light transmission container 1 with free surface, the light that light source 3 sends is suitable for covering the described liquid level in the described light transmission container 1, be suitable for forming a hot spot at the light-sensitive surface of described image photosensitive device 5 from the light of this liquid level transmission or reflection through described collector lens 2 backs, the arithmetic processing apparatus 6 that links to each other with described image photosensitive device 5 is suitable for calculating the change in location of central point on described light-sensitive surface of described hot spot, with vergence direction and the angle of inclination that calculates inclination sensor.
Described light source 3 is the area source that sends the pointolite of scattered beam or launch parallel rays; When described light source 3 adopts described pointolite, be provided with second collector lens 7 that is used for described scattered beam is converted to parallel rays between light source 3 and the described liquid level.
The method of work of above-mentioned inclination sensor, it comprises: the light that a light source 3 is sent covers the free surface of a light transmission container 1 iuuminting liquid, form a hot spot through a collector lens 2 backs at the light-sensitive surface of an image photosensitive device 5 from the light of this free surface transmission or reflection, the location fix of central point on the light-sensitive surface of image photosensitive device 5 that the arithmetic processing apparatus 6 that links to each other with image photosensitive device 5 detects described hot spot draws the vergence direction of inclination sensor; If light source 3 is e with the spacing of described collector lens 2 optical axises, when the inclination angle of inclination sensor is θ, the side-play amount of the central point of described hot spot on described light-sensitive surface is d, then according to formula d=Ftan(α+2 θ)-Ftan α can calculate described inclination angle [theta], wherein F is the collector lens focal length, tan α=e/F.
The technique effect that the present invention has: (1) inclination sensor of the present invention, make light source through mirror reflects, to arrive the free surface of light transmission container by collector lens, and make the light reflection and imaging, gather by the image photosensitive device again, by the image information of arithmetic processing apparatus, calculate its liquid imaging center then, its angle of inclination of computing and vergence direction by the Flame Image Process related algorithm according to photosensitive device.Can be used as that high precision inclination sensor, reliability and precision are higher, cost is lower and calculate easy.(2) liquid of the present invention adopts the liquid with suitable viscosity, and this light transmission container has Free Surface, and total surface is to keep horizontality, has improved measuring accuracy of the present invention.(3) image information of photosensitive device acquisition of the present invention, can obtain the more image information of high-quality by Flame Image Process related algorithm etc., and the computed image center method is simple, the fast operation of arithmetic processing apparatus, its reliability is increased, and features simple structure makes its cost low.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the optical texture synoptic diagram of the inclination sensor in the invention process 1;
Light path synoptic diagram when Fig. 2 is inclination sensor run-off the straight in the invention process 1;
Fig. 3 is the optical texture synoptic diagram of the inclination sensor among the embodiment 2;
Fig. 4 is the optical texture synoptic diagram of the inclination sensor among the embodiment 3;
Fig. 5 is the optical texture synoptic diagram of the inclination sensor among the embodiment 4;
Fig. 6 is the optical texture synoptic diagram of the inclination sensor among the embodiment 5;
Fig. 7 is the optical texture synoptic diagram of the inclination sensor among the embodiment 6;
Fig. 8 is the optical texture synoptic diagram of the inclination sensor among the embodiment 7.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples:
Embodiment 1:
As Fig. 1, the inclination sensor of present embodiment comprises: the light transmission container 1 that is oppositely arranged up and down successively, collector lens 2 and light source 3, and image photosensitive device 5 and arithmetic processing apparatus 6.
The liquid of filling is silicone oil in the light transmission container 1.(other liquid with identical refractive index all can, as alcohol etc.) silicone oil has Free Surface, thereby its total surface is to keep horizontal state, and illumination is directly carried out plane reflection after being mapped to the liquid level of silicone oil.
Image photosensitive device 5 be to through catoptron 4 reflection as sensitization and be transformed to the device that electric signal uses, the photosensitive device that present embodiment uses is cmos image sensor, also can adopt ccd image sensor.
The image that the liquid level emission light of light transmission container 1 is become on the light-sensitive surface of image photosensitive device 5 is the image of similar hot spot, promptly handling liquid level zone, back by image binaryzation is the hot spot of white, can calculate edge of image according to Flame Image Process, with this computed image center; Perhaps directly on average also can calculate the center of hickie, i.e. the center of liquid level according to the pixel of this hot spot.Inclination sensor is as if integral inclination, because the Free Surface of light transmission container 1 still keeps level, this moment, the shape of liquid level can deform, and causes the center of liquid level that corresponding skew can take place according to the difference of degree of tilt.
During work, the scattered beam that light source 3 sends is converted to directional light through behind the collector lens 2, this directional light is suitable for covering the free surface of the light-transmissive fluid in the light transmission container 1, form a hot spot through collector lens 2 backs at the light-sensitive surface of image photosensitive device 5 from the light of this free surface reflection, the location fix of central point on the light-sensitive surface of image photosensitive device 5 of the described hot spot of arithmetic processing apparatus 6 detections that links to each other with image photosensitive device 5 be the vergence direction of inclination sensor as can be known.A kind of method of work of inclination sensor, it is characterized in that: the light that a light source 3 is sent covers the free surface of a light transmission container 1 iuuminting liquid, form a hot spot through a collector lens 2 backs at the light-sensitive surface of an image photosensitive device 5 from the light of this free surface transmission or reflection, the arithmetic processing apparatus that links to each other with image photosensitive device 56 detects the change in location of central point on the light-sensitive surface of image photosensitive device 5 of described hot spot, according to the change in location orientation of central point on described light-sensitive surface of described hot spot this sensor perturbations direction as can be known.As shown in Figure 2, the spacing that is positioned at the optical axis of luminous point A on the focal plane of collector lens 2 and collector lens 2 is e, be that AO is e, the focal length of collector lens 2 is F, the light that this luminous point A launches becomes parallel rays and is transmitted into liquid level behind collector lens 2, reflected after collector lens 2 images in AC place, focal plane by free surface.When described free surface was vertical with described optical axis, this imaging point and luminous point A be about symmetrical, i.e. B point among the figure.When the inclination angle of sensor was θ, then the central point of described hot spot moved to C point position.At this moment, each angular relationship can learn that the computing formula of the displacement BC of central point on described light-sensitive surface of described hot spot is as shown in the figure: BC=Ftan(α+2 θ)-and Ftan α, wherein tan α=e/F.Be connected with display device on the arithmetic processing apparatus 6 during use, to show described inclination angle [theta].
Embodiment 2:
On the basis of embodiment 1, there is following modification in present embodiment:
The inclination sensor of present embodiment has increased by a catoptron 4, and catoptron 4 is to make the light by collector lens 2 reflex to device used on the image photosensitive device 5.
In addition, other formation and principle embodiment 1 are identical, the Therefore, omited explanation.
Embodiment 3:
On the basis of embodiment 1, there is following modification in present embodiment:
As shown in Figure 4, the light source 3 in the inclination sensor of present embodiment, light light transmission container 1 and collector lens 2 are oppositely arranged up and down successively, and are provided with second collector lens 7 between light source 3 and light light transmission container 1.
The inclination sensor of present embodiment places the top of light transmission container 1 with light source 3, makes light transmission light transmission container 1, through directly imaging on image photosensitive device 5 of collector lens 2.
In addition, other formation and principle are identical with embodiment 1, the Therefore, omited explanation.
Embodiment 4:
On the basis of embodiment 1, there is following modification in present embodiment:
Inclination sensor shown in Figure 5 is made of light transmission container 1, collector lens 2, light source 3, the first catoptron 4a, the second catoptron 4b, image photosensitive device 5 and arithmetic processing apparatus 6.
The inclination sensor of present embodiment places light source 3 near the image photosensitive device 5, the light that light source 3 sends arrives the first catoptron 4a by collector lens 2, reach described liquid level through reflecting and refract to again, reflected light reaches the second catoptron 4b through reflecting and refract to again, return by former again road, this path, image photosensitive device 5 receives the light echo imaging.
In addition, other formation and principle are identical with embodiment 1, the Therefore, omited explanation.
Embodiment 5:
On the basis of embodiment 1, there is following modification in present embodiment:
Inclination sensor shown in Figure 6 is made of light transmission container 1, collector lens 2, second collector lens 7, light source 3, semi-penetration mirror 4a, image photosensitive device 5 and arithmetic processing apparatus 6.
In addition, other formation and principle are identical with embodiment 1, the Therefore, omited explanation.
Embodiment 6:
On the basis of embodiment 5, there is following modification in present embodiment:
Inclination sensor shown in Figure 7 is made of light transmission container 1, collector lens 2, second collector lens 7, light source 3, image photosensitive device 5 and arithmetic processing apparatus 6.
The inclination sensor of present embodiment omits the semi-penetration mirror 4a among the embodiment 5, and the collector lens 2 and second collector lens 7 are tilted to place with different angles.Other formation and principle are identical with the 5th embodiment, the Therefore, omited explanation.
Embodiment 7:
On the basis of embodiment 1, there is following modification in present embodiment:
Inclination sensor shown in Figure 8 is made of light transmission container 1, light source 3, image photosensitive device 5 and arithmetic processing apparatus 6.
Present embodiment omits the collector lens 2 among the embodiment 1, and a collector lens is made in light transmission container 1 bottom, makes structure more simple.Other formation and principle are identical with embodiment 1, the Therefore, omited explanation.Plant among the embodiment at the first six simultaneously, all can change and use the method simplified structure.
Obviously, the foregoing description only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (5)
1. an inclination sensor is characterized in that comprising: light transmission container (1), collector lens (2), light source (3), image photosensitive device (5) and arithmetic processing apparatus (6);
Light transmission container is provided with the light-transmissive fluid with free surface in (1), the light that light source (3) sends is suitable for covering the described liquid level in the described light transmission container (1), be suitable for forming a hot spot at the light-sensitive surface of described image photosensitive device (5) from the light of this liquid level transmission or reflection through described collector lens (2) back, the arithmetic processing apparatus (6) that links to each other with described image photosensitive device (5) is suitable for calculating the change in location of central point on described light-sensitive surface of described hot spot, with vergence direction and the angle of inclination that calculates inclination sensor.
2. inclination sensor according to claim 1 is characterized in that: described light source (3) is the area source that sends the pointolite of scattered beam or launch parallel rays;
When described light source (3) adopts described pointolite, be provided with second collector lens 7 that is used for described scattered beam is converted to parallel rays between light source (3) and the described liquid level.
3. the method for work of an inclination sensor, it is characterized in that: the light that a light source (3) is sent covers the free surface of a light transmission container (1) iuuminting liquid, form a hot spot through a collector lens (2) back at the light-sensitive surface of an image photosensitive device (5) from the light of this free surface transmission or reflection, the location fix of central point on the light-sensitive surface of image photosensitive device (5) of the described hot spot of the arithmetic processing apparatus (6) that links to each other with image photosensitive device (5) detection draws the vergence direction of inclination sensor;
If light source (3) is e with the spacing of described collector lens (2) optical axis, when the inclination angle of inclination sensor is θ, the side-play amount of the central point of described hot spot on described light-sensitive surface is d, then according to formula d=Ftan(α+2 θ)-Ftan α can calculate described inclination angle [theta], wherein F is the collector lens focal length, tan α=e/F.
4. the method for work of inclination sensor according to claim 3 is characterized in that: described light source (3) is for sending the pointolite of scattered beam or launching the area source of parallel rays;
When light source (3) adopts described pointolite, be provided with second collector lens 7 that is used for described scattered beam is converted to parallel rays between light source (3) and the described liquid level.
5. the method for work of inclination sensor according to claim 3, it is characterized in that: arithmetic processing apparatus during use is connected with display device on (6), to show described inclination angle [theta].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161331 CN102261906A (en) | 2011-06-15 | 2011-06-15 | Inclined sensor and operating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161331 CN102261906A (en) | 2011-06-15 | 2011-06-15 | Inclined sensor and operating method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102261906A true CN102261906A (en) | 2011-11-30 |
Family
ID=45008629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110161331 Pending CN102261906A (en) | 2011-06-15 | 2011-06-15 | Inclined sensor and operating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102261906A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848841A (en) * | 2014-04-18 | 2015-08-19 | 常州市新瑞得仪器有限公司 | Tilting sensor and working method thereof |
| CN106964022A (en) * | 2017-03-13 | 2017-07-21 | 西南交通大学 | transfusion monitoring device |
| CN109087320A (en) * | 2018-08-29 | 2018-12-25 | 苏州钮曼精密机电科技有限公司 | A kind of optical sieving processing method applied to inclination sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206114A (en) * | 2006-12-21 | 2008-06-25 | 方础光电科技股份有限公司 | Electron type level sensor and sensing method thereof |
-
2011
- 2011-06-15 CN CN 201110161331 patent/CN102261906A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206114A (en) * | 2006-12-21 | 2008-06-25 | 方础光电科技股份有限公司 | Electron type level sensor and sensing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848841A (en) * | 2014-04-18 | 2015-08-19 | 常州市新瑞得仪器有限公司 | Tilting sensor and working method thereof |
| CN104848841B (en) * | 2014-04-18 | 2017-08-25 | 常州市新瑞得仪器有限公司 | A kind of inclination sensor and its method of work |
| CN106964022A (en) * | 2017-03-13 | 2017-07-21 | 西南交通大学 | transfusion monitoring device |
| CN106964022B (en) * | 2017-03-13 | 2023-05-26 | 西南交通大学 | Infusion monitoring device |
| CN109087320A (en) * | 2018-08-29 | 2018-12-25 | 苏州钮曼精密机电科技有限公司 | A kind of optical sieving processing method applied to inclination sensor |
| CN109087320B (en) * | 2018-08-29 | 2022-05-03 | 苏州钮曼精密机电科技有限公司 | Image screening processing method applied to tilt sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207318710U (en) | A kind of more harness hybrid laser radars of list laser | |
| KR102353599B1 (en) | Optical imaging assembly and system with optical distortion correction | |
| CN101949866B (en) | Single camera omni-directional vision sensor for package test | |
| US10184900B2 (en) | Method, device and inspection line for visualizing the flatness of a surface of a container ring | |
| CN101865675B (en) | Method for acquiring three-dimensional visual detection circle structure light calibration point | |
| CN105510925B (en) | Laser tracker with the stream of warm air shielding part for measurement beam | |
| US10832052B2 (en) | IR illumination module for MEMS-based eye tracking | |
| TWI570387B (en) | Image ranging system, light source module and image sensing module | |
| US20110115904A1 (en) | Object-detecting system | |
| CN101609381A (en) | Use the touch-detection sensing device of camera and reflective mirror | |
| US10838489B2 (en) | IR illumination module for MEMS-based eye tracking | |
| CN102261906A (en) | Inclined sensor and operating method thereof | |
| US20050030643A1 (en) | Spherical view imaging apparatus and method | |
| CN105094309A (en) | Optical sensing module and mobile device | |
| CN104748720A (en) | Space angle measuring device and space angle measuring method | |
| US11624906B2 (en) | IR illumination module for MEMS-based eye tracking | |
| CN206113941U (en) | Surveying and mapping device | |
| CN101782419A (en) | Liquid level measuring method and device based on isosceles right triangular prism | |
| CN102095571B (en) | Automatic lensmeter | |
| CN106443846B (en) | Lens and preparation method thereof, backlight panel and display device | |
| CN209945275U (en) | Shooting device based on reflection light path | |
| CN104848841B (en) | A kind of inclination sensor and its method of work | |
| US20180252516A1 (en) | Method and apparatus for measuring the height of a surface | |
| EP3015839B1 (en) | Laser pointing system for monitoring stability of structures | |
| CN102998093B (en) | Device and method for quickly automatically measuring focal distance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111130 |