CN113176205A - Sensing device suitable for transparent body detection - Google Patents
Sensing device suitable for transparent body detection Download PDFInfo
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- CN113176205A CN113176205A CN202110208994.6A CN202110208994A CN113176205A CN 113176205 A CN113176205 A CN 113176205A CN 202110208994 A CN202110208994 A CN 202110208994A CN 113176205 A CN113176205 A CN 113176205A
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 238000005286 illumination Methods 0.000 claims description 25
- 230000035945 sensitivity Effects 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 7
- 238000003491 array Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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Abstract
The invention discloses a sensing device suitable for detecting a transparent body, which is suitable for detecting an object, particularly a transparent object, and comprises a device shell, a control unit, a display unit, a configuration unit, a light receiving unit, a light projecting unit, a power supply unit and a connecting cable, and is characterized in that: the display unit, the preparation unit, the light receiving unit, the light projecting unit and the connecting cable are respectively and electrically connected with the control unit, the power supply unit supplies power to each unit, each unit is arranged in the device shell, one end of the connecting cable is electrically connected with the power supply unit and the control unit, and the other end of the connecting cable is led out of the device shell. The sensing device is matched with the reflector at any position in a specified installation range, can realize the detection of transparent objects such as films and the like in a key one-key configuration mode, has good detection effect, and has the advantages of long detection distance, strong anti-interference effect and the like.
Description
Technical Field
The invention belongs to the technical field of detection of transparent bodies such as films and the like, belongs to a polarizer trans-photoelectric sensor, and particularly relates to a sensing device suitable for detection of the transparent bodies.
Background
The existing polarizer trans-photoelectric sensor comprises two parts, namely a transmitter and a receiver, wherein the transmitter and the receiver are arranged in the same device. A reflecting plate is arranged in front of the device, light emitted by the transmitting tube is reflected back to the receiving tube by utilizing the principle of light reflection, and once the light path is blocked by a detected object, a signal level is output to change, namely a switch control signal is output. The existing sensor has the technical defects that: only common objects can be detected, and if objects with small optical path changes, such as films, are detected, the detection cannot work normally.
Disclosure of Invention
In order to solve the above problems, an object of the present application is to provide a sensor device suitable for detecting a transparent body.
In order to achieve the purpose of the invention, the sensing device suitable for detecting the transparent body comprises a device shell, a control unit, a display unit, a configuration unit, a light receiving unit, a light projecting unit, a power supply unit and a connecting cable, wherein the display unit, the configuration unit, the light receiving unit, the light projecting unit and the connecting cable are respectively and electrically connected with the control unit; the object to be detected is determined by determining the height change of the illumination intensity data received by the light receiving unit.
The units carry out transparent body detection through the following processes:
the method comprises the following steps: data acquisition and processing: the control unit collects and processes illumination intensity data transmitted by the light receiving unit in real time, wherein the illumination intensity data are sampling values of M fixed points in a sampling curve waveform for N times continuously and are stored in M arrays;
step two: and (4) comparison and judgment: the control unit compares the collected illumination intensity data with a preset threshold value 1, if the illumination intensity data is lower than the preset threshold value 1, a state A is output, and if the illumination intensity data is higher than the preset threshold value 1, a step III is carried out;
step three: and (3) secondary comparison and judgment: the control unit compares and judges the collected illumination intensity data with a preset threshold value 2, if the illumination intensity data is lower than the preset threshold value 2, the output state A or the output state B is kept unchanged, and if the illumination intensity data is higher than the preset threshold value 2, the output state B is output;
step four: and after key judgment, returning to the step one: and if the key is pressed, storing the current illumination intensity data into a memory, setting a sensitivity gear, setting values of a threshold value 1 and a threshold value 2 according to the gear, and then returning to the step I.
The control unit comprises a photoelectric signal processing circuit, an output circuit and a pulse generating circuit, wherein the photoelectric signal processing circuit is electrically connected with the light receiving unit, the output circuit is electrically connected with the connecting cable and the display unit, and the pulse generating circuit is electrically connected with the light projecting unit.
The pulse generating circuit drives the light projecting unit to continuously emit red light or infrared light with a certain frequency by using a preset frequency duty ratio signal.
The output circuit outputs a level signal, the external equipment is controlled through the connecting cable, the output level signal is divided into two states, the two states correspond to the output state A or the output state B respectively, and the output state A or the output state B is used for judging whether object shielding exists or not.
The light receiving unit generates photocurrent through illumination, and the photoelectric signal processing circuit converts a photocurrent signal into a voltage signal, amplifies the voltage signal and converts the voltage signal into analog-digital signals.
The display unit comprises a power indicator and a state indicator, the power indicator is used for indicating whether the current device works normally, and the state indicator is used for indicating an output state A or an output state B after object shielding judgment.
The preparation unit can divide the sensitivity into C gears through key preparation, intelligently determines that the sensitivity gears are set to be different thresholds 1 and 2 according to the transparency of a detected object, and realizes shielding detection of objects with different transparency in a full range through different gear settings aiming at objects with different detection distances and different transparencies in a use range.
Compared with the prior art, the invention has the advantages that the sensing device can realize the detection of transparent objects such as films and the like by matching with any position of the reflector in a specified installation range in a key-press configuration mode, has good detection effect, and has the advantages of long detection distance, strong anti-interference effect and the like.
Drawings
FIG. 1 is a schematic view of a sensing device suitable for use in the detection of a transparent body according to the present invention;
FIG. 2 is a schematic diagram of the process of detecting the transparent body by the units of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 2, the present invention is a sensor device suitable for detecting a transparent body, which is suitable for detecting an object, particularly a transparent object, and includes a device case, a control unit, a display unit, a configuration unit, a light receiving unit, a light projecting unit, a power supply unit, and a connection cable, and is characterized in that: the display unit, the preparation unit, the light receiving unit, the light projecting unit and the connecting cable are respectively and electrically connected with the control unit, the power supply unit supplies power to each unit, each unit is arranged in the device shell, one end of the connecting cable is electrically connected with the power supply unit and the control unit, and the other end of the connecting cable is led out of the device shell;
the units carry out transparent body detection through the following processes:
step one, data acquisition and processing
The control unit collects and processes illumination intensity data transmitted by the light receiving unit in real time, the illumination intensity data are sampling values of M fixed points in a sampling curve waveform for continuous N times, the sampling values are stored in M arrays, for example, 2 fixed points of the sampling curve can be sampled for continuous 10 times, and the sampling values are stored in 2 arrays of AD1[10] and AD2[10] after being sorted from small to large;
step two, comparison and judgment
The control unit compares the acquired data with a preset threshold value 1, if the illumination intensity data is lower than the preset threshold value 1, a state A is output, and if the illumination intensity data is higher than the preset threshold value 1, the step 3 is carried out;
step three, secondary comparison and judgment
The control unit compares and judges the collected illumination intensity data with a preset threshold value 2, if the illumination intensity data is lower than the preset threshold value 2, the current output state is kept unchanged, namely the output state A or the output state B is unchanged, and if the illumination intensity data is higher than the preset threshold value 2, the output state B is output.
The threshold 1 is smaller than the threshold 2, and for convenience of description, the output state a is set to a high level and the output state B is set to a low level (or vice versa). And if the current illumination intensity data is less than the threshold value 1, outputting the state A and outputting a high level. And if the current illumination intensity data is larger than the threshold value 2, outputting the state B and outputting a low level. If the current illumination intensity data is between the threshold value 1 and the threshold value 2, the output level keeps the previous state unchanged, and frequent switching of the output state at a critical point is avoided;
step four, entering the step one after key judgment
And if the key is pressed, storing the current illumination intensity data into a memory, setting a sensitivity gear matched with the current illumination intensity data, setting values of a threshold value 1 and a threshold value 2 according to the gear, and then returning to the step one. And if the key is not pressed within the preset time, directly returning to the step one. The sensitivity is divided into C gears, for example, the sensitivity can be divided into 3 gears which respectively correspond to the application of a long distance, a middle distance and a short distance (or a high transparent body, a middle transparent body and a low transparent body);
the sensing device is matched with the reflector at any position in a specified installation range, can realize the detection of transparent objects such as films and the like by pressing a key one-key configuration mode, has good detection effect, and has the advantages of long detection distance, strong anti-interference effect and the like.
The technical means not described in detail in the present application are known techniques.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A sensing device suitable for detecting a transparent body is characterized by comprising a device shell, a control unit, a display unit, a configuration unit, a light receiving unit, a light projecting unit, a power supply unit and a connecting cable, wherein the display unit, the configuration unit, the light receiving unit, the light projecting unit and the connecting cable are respectively and electrically connected with the control unit;
the object to be detected is determined by determining the height change of the illumination intensity data received by the light receiving unit.
2. The sensor device of claim 1, wherein the control unit comprises a photoelectric signal processing circuit, an output circuit, and a pulse generating circuit, the photoelectric signal processing circuit is electrically connected to the light receiving unit, the output circuit is electrically connected to the connecting cable and the display unit, and the pulse generating circuit is electrically connected to the light projecting unit.
3. The sensor device as claimed in claim 2, wherein the pulse generator circuit drives the light projector to emit red or infrared light with a predetermined frequency according to a predetermined frequency duty cycle.
4. The sensor device according to claim 2, wherein the output circuit outputs a level signal, and the external device is controlled by the connection cable, and the output level signal is divided into two states, corresponding to the output state a or the output state B, respectively, for determining whether there is an object blocking.
5. The sensor device as claimed in claim 1, wherein the light receiving unit generates a photocurrent by illumination, and the photocurrent signal is converted into a voltage signal by the optical signal processing circuit, amplified, and then analog-to-digital converted.
6. The sensor device as claimed in claim 1, wherein the display unit comprises a power indicator for indicating whether the device is working normally or not and a status indicator for indicating the output status A or B after the object occlusion determination.
7. The sensing device suitable for detecting the transparent body as claimed in claim 1, wherein the configuration unit can divide the sensitivity into C levels through key configuration, intelligently determine threshold values 1 and 2 with different sensitivity level settings according to the transparency of the detected object, and realize shielding detection of objects with different transparency in a full range through different level settings for objects with different detection distances and different transparencies within a use range.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110208994.6A CN113176205A (en) | 2021-02-25 | 2021-02-25 | Sensing device suitable for transparent body detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110208994.6A CN113176205A (en) | 2021-02-25 | 2021-02-25 | Sensing device suitable for transparent body detection |
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| CN113176205A true CN113176205A (en) | 2021-07-27 |
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Citations (7)
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|---|---|---|---|---|
| JP2002171162A (en) * | 2000-11-30 | 2002-06-14 | Omron Corp | Photoelectric sensor and method for adjusting sensitivity of photoelectric sensor |
| CN1384349A (en) * | 2001-05-02 | 2002-12-11 | 欧姆龙株式会社 | Photoelectronic sensor |
| JP2006180175A (en) * | 2004-12-22 | 2006-07-06 | Sick Optex Kk | Photoelectric sensor |
| CN202033483U (en) * | 2010-12-31 | 2011-11-09 | 欧姆龙(上海)有限公司 | 360 degrees detection photoelectric sensor |
| CN203870274U (en) * | 2014-02-23 | 2014-10-08 | 欧姆龙株式会社 | Photoelectric sensor |
| CN104865575A (en) * | 2014-02-23 | 2015-08-26 | 欧姆龙株式会社 | Photoelectric sensor |
| CN104865611A (en) * | 2014-02-23 | 2015-08-26 | 欧姆龙株式会社 | Photoelectric sensor |
-
2021
- 2021-02-25 CN CN202110208994.6A patent/CN113176205A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002171162A (en) * | 2000-11-30 | 2002-06-14 | Omron Corp | Photoelectric sensor and method for adjusting sensitivity of photoelectric sensor |
| CN1384349A (en) * | 2001-05-02 | 2002-12-11 | 欧姆龙株式会社 | Photoelectronic sensor |
| JP2006180175A (en) * | 2004-12-22 | 2006-07-06 | Sick Optex Kk | Photoelectric sensor |
| CN202033483U (en) * | 2010-12-31 | 2011-11-09 | 欧姆龙(上海)有限公司 | 360 degrees detection photoelectric sensor |
| CN203870274U (en) * | 2014-02-23 | 2014-10-08 | 欧姆龙株式会社 | Photoelectric sensor |
| CN104865575A (en) * | 2014-02-23 | 2015-08-26 | 欧姆龙株式会社 | Photoelectric sensor |
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Non-Patent Citations (1)
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| 初忠主编: "《轮机自动化》", 30 March 2014, 大连海事大学出版社 * |
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Application publication date: 20210727 |