CN218674694U - Background suppression sensor - Google Patents
Background suppression sensor Download PDFInfo
- Publication number
- CN218674694U CN218674694U CN202222591457.7U CN202222591457U CN218674694U CN 218674694 U CN218674694 U CN 218674694U CN 202222591457 U CN202222591457 U CN 202222591457U CN 218674694 U CN218674694 U CN 218674694U
- Authority
- CN
- China
- Prior art keywords
- receiving unit
- end receiving
- far
- background
- unit
- 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
- Geophysics And Detection Of Objects (AREA)
Abstract
A background suppression sensor comprises a transmitting unit, a near-end receiving unit and a far-end receiving unit which are sequentially arranged from bottom to top, wherein the transmitting unit is used for transmitting light rays to the background direction, and the near-end receiving unit and the far-end receiving unit are used for receiving the light rays reflected from the background direction; the receiving lens is movably arranged on the front sides of the receiving ends of the near-end receiving unit and the far-end receiving unit up and down, and the receiving lens is used for adjusting the reflection light spots to the middle positions of the receiving ends of the near-end receiving unit and the far-end receiving unit. The utility model adopts the far-end receiving unit and the near-end receiving unit which are arranged up and down to simultaneously receive the reflected light in the background direction, and when the light intensity received by the near-end receiving unit is stronger than that received by the far-end receiving unit, the target object is judged to pass through the background; the method utilizes the characteristic that the reflected light of different far and near target objects has different intensities in far and near areas, and the detection sensitivity of the designed background suppression sensor is improved.
Description
Technical Field
The utility model relates to a sensor technical field, in particular to background suppression sensor.
Background
Because the color and the light reflection rate of the target detection object are different, the conventional diffuse reflection type sensor cannot reliably detect in many occasions, and the photoelectric background suppression sensor is produced at the same time. The background suppression is to shield the background, which is not influenced by the background, and the detection distance is set, and the object is detected, and the object can not be detected beyond the set distance, so that the detection object can well avoid the interference of the background. The background suppression type photoelectric sensor is made in such a way that the detection result is only related to the detection distance and is not related to the surface color and the light reflection rate of the object, and the method can be suitable for detecting the dark target body on the background surface with bright color.
The conventional background suppression sensor detects the background suppression signal by the principle of triangulation, and sets a detection distance when the sensor leaves a factory. The detection device is applied to a conveyor belt for detecting whether a product is detected or not, a detection object is very thin and is not greatly different when placed on the conveyor belt, and the detection device is easy to cause that no detection product gives a signal.
Therefore, in order to overcome the disadvantages of the prior art, it is necessary to design a background suppression sensor to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide a background suppression sensor.
In order to achieve the above objects and other related objects, the present invention provides a technical solution: a background suppression sensor comprises a transmitting unit, a near-end receiving unit and a far-end receiving unit which are sequentially arranged from bottom to top, wherein the transmitting unit is used for transmitting light to the background direction, and the near-end receiving unit and the far-end receiving unit are used for receiving the light reflected from the background direction; the receiving lens can be movably arranged on the front sides of the receiving ends of the near-end receiving unit and the far-end receiving unit up and down, and is used for adjusting the reflection light spots to the middle positions of the receiving ends of the near-end receiving unit and the far-end receiving unit.
The preferable technical scheme is as follows: the transmitting unit further comprises a transmitting lens which is fixedly arranged on the front side of the transmitting end of the transmitting unit.
The preferable technical scheme is as follows: the transmitting unit, the near-end receiving unit, the far-end receiving unit, the receiving lens and the transmitting lens are all arranged in the shell.
The preferable technical scheme is as follows: the far-end receiving unit and the near-end receiving unit adopt photosensitive diodes.
The preferable technical scheme is as follows: the emitting unit adopts a light emitting diode.
Because of the application of the technical scheme, the utility model discloses the beneficial effect who has does:
1. the utility model provides a background suppression sensor, adopt the far-end receiving element and the near-end receiving element of arranging from top to bottom to receive the reflected light of background direction simultaneously, when the light intensity that near-end receiving element received is stronger than the light intensity that far-end receiving element received, then judge that there is the target object to pass through the background; the method utilizes the characteristic that the reflected light rays of different near and far targets have different intensities in the near and far areas, and the detection sensitivity of the designed background suppression sensor is improved.
2. The utility model provides a pair of background restraines sensor, accessible receiving lens adjust the position of adjusting the reflection facula, make it be located the intermediate position of near-end receiving element and distal end receiving element receiving terminal as far as possible to further improve this background and restrain sensor's detectivity, reduce the product blind area, compare in other product measurement accuracy higher, detection effect is better.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is the assembly schematic diagram of the lens mounting frame and the adjusting bolt of the present invention.
In the above drawings, 1, a housing; 2. a light emitting diode; 3. a dual-receiving photodiode; 4. an emission lens; 5. a receiving lens; 6. a lens mount; 61. salient points; 62. a connecting tooth; 7. adjusting the bolt; 8. a filter plate.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1-3. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Example (b):
as shown in fig. 1-3, for the background suppression sensor provided by the present invention, the background suppression sensor includes a housing 1, and a transmitting unit, a near-end receiving unit and a far-end receiving unit are disposed in the housing 1 from bottom to top in sequence. Wherein, the transmitting unit adopts a light emitting diode 2, and the near-end receiving unit and the far-end receiving unit adopt two photodiodes or adopt an integrated double-receiving photodiode 3. The transmitting unit is used for transmitting light to the background direction, and the near-end receiving unit and the far-end receiving unit are used for receiving the light reflected by the background direction.
Further, a transmitting lens 4 and a receiving lens 5 are included. The emitting lens 4 is fixedly arranged in the shell 1 and positioned at the front side of the emitting end of the light emitting diode 2. The receiving lens 5 is movably arranged in the housing 1 up and down and is positioned in front of the receiving end of the double-receiving photodiode 3. The receiving lens 5 is used for adjusting the reflected light spot to the middle position between the near-end receiving area and the far-end receiving area of the near-double-receiving photosensitive diode 3.
Specifically, the receiving lens 5 is provided in the housing 1 movably up and down by an elevating mechanism including a lens mounting bracket 6 and an adjusting bolt 7. Receiving lens 5 is installed on lens mounting bracket 6, and the both sides of lens mounting bracket 6 are equipped with bump 61, and bump 61 is arranged in the spout (not shown) of vertical setting in casing 1, can realize lens mounting bracket 6 and move about in casing 1 from top to bottom. The adjusting bolt 7 is rotatably arranged on the shell 1 and is in threaded connection with the lens mounting frame 6. The top side of the lens mount 6 is provided with two horizontally spaced-apart coupling teeth 62, i.e. the adjusting screw 7 is screwed to the lens mount 6 via the two coupling teeth 62. By turning the adjusting bolt 7, the lens mounting frame 6 can be controlled to move up and down.
Further, a filter 8 is provided on the housing 1, and the filter 8 is provided on the front side of the emission lens 4 and the reception lens 5.
The transmitting unit and the transmitting driving circuit board are electrically connected, and the near-end receiving unit and the far-end receiving unit are electrically connected with the receiving control circuit board. This application converts the change of the current signal of near-end receiving element and distal end receiving element into voltage signal change, carry out difference amplification comparative analysis with voltage signal again, the sensitivity of this signal is higher can be more accurate judge that the light that reflects is located which piece of photodiode what position, utilize the fine adjustment of newly-designed elevating system to remove the facula position simultaneously, increase the sensitivity of product, reduce the product blind area, compare in other products can survey less displacement, detection effect is better.
Therefore, the utility model has the advantages of it is following:
1. the utility model provides a background suppression sensor, adopt the far-end receiving element and the near-end receiving element of arranging from top to bottom to receive the reflected light of background direction simultaneously, when the light intensity that near-end receiving element received is stronger than the light intensity that far-end receiving element received, then judge that there is the target object to pass through the background; the method utilizes the characteristic that the reflected light of different far and near target objects has different intensities in far and near areas, and the detection sensitivity of the designed background suppression sensor is improved.
2. The utility model provides a pair of background restraines sensor, accessible receiving lens adjust the position of adjusting reflection facula, make it be located the intermediate position of near-end receiving element and distal end receiving element receiving terminal as far as possible to further improve this background and restrain sensor's detectivity, reduce the product blind area, compare in other product measurement accuracy higher, detection effect is better
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. A background suppression sensor, characterized by: the device comprises a transmitting unit, a near-end receiving unit and a far-end receiving unit which are sequentially arranged from bottom to top, wherein the transmitting unit is used for transmitting light rays to the background direction, and the near-end receiving unit and the far-end receiving unit are used for receiving the light rays reflected from the background direction; the receiving lens can be movably arranged on the front sides of the receiving ends of the near-end receiving unit and the far-end receiving unit up and down, and is used for adjusting the reflection light spots to the middle positions of the receiving ends of the near-end receiving unit and the far-end receiving unit.
2. A background suppression sensor according to claim 1, wherein: the transmitting unit further comprises a transmitting lens which is fixedly arranged on the front side of the transmitting end of the transmitting unit.
3. A background suppression sensor according to claim 2, wherein: the transmitting unit, the near-end receiving unit, the far-end receiving unit, the receiving lens and the transmitting lens are all arranged in the shell.
4. A background suppression sensor according to claim 1, wherein: the far-end receiving unit and the near-end receiving unit adopt photosensitive diodes.
5. A background suppression sensor according to claim 1, wherein: the emitting unit adopts a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222591457.7U CN218674694U (en) | 2022-09-29 | 2022-09-29 | Background suppression sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222591457.7U CN218674694U (en) | 2022-09-29 | 2022-09-29 | Background suppression sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218674694U true CN218674694U (en) | 2023-03-21 |
Family
ID=85560181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222591457.7U Active CN218674694U (en) | 2022-09-29 | 2022-09-29 | Background suppression sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218674694U (en) |
-
2022
- 2022-09-29 CN CN202222591457.7U patent/CN218674694U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20190245485A1 (en) | Optical Soiling Measurement Device for Photovoltaic Arrays | |
| CN208536980U (en) | A kind of non-contact optoelectronic formula liquid level induction system and liquid heater | |
| CN218674694U (en) | Background suppression sensor | |
| CN109470284A (en) | A kind of background inhibition photoelectric sensor | |
| CN110888178B (en) | Proximity detection circuit and terminal device | |
| CN209166467U (en) | A kind of background inhibition photoelectric sensor | |
| CN112468681B (en) | Camera device for collecting vehicle information | |
| CN112179384A (en) | Photoelectric sensor for detection convenient to adjust | |
| CN208386764U (en) | A kind of imaging device with automatic range focus function | |
| CN210923947U (en) | Diffuse reflection photoelectric sensor device with background shielding function | |
| JP2005172377A (en) | Air conditioner having human body detecting sensor, and human body detecting method for air conditioner having human body detecting sensor | |
| CN211013007U (en) | Line reflection type laser sensor | |
| CN220418644U (en) | Small-size photoelectric sensor | |
| CN208467579U (en) | Soldering tip detection device | |
| CN207894811U (en) | Carbon dioxide sensor | |
| CN217276239U (en) | Background suppression type photoelectric sensor convenient to adjust | |
| CN218848355U (en) | Photoelectric alignment mechanism for detecting dinner plate | |
| CN219956860U (en) | Headlamp detector with distance measurement function and detection device applying headlamp detector | |
| CN214989598U (en) | Photoelectric detection microwave device | |
| CN213986874U (en) | Subway platform gap detection device based on attitude self-adaptation and area array laser | |
| CN216526705U (en) | Integral lens for diffuse reflection light curtain | |
| CN217718095U (en) | Circuit for enhancing anti-interference and improving signal strength | |
| CN219244639U (en) | Photoelectric sensor capable of judging by using distance and color simultaneously | |
| CN220819228U (en) | Infrared temperature measurement module and induction cooking utensil | |
| CN2537958Y (en) | Semiconductor laser self mixing frequency interference sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |