CN111221120A - Scanning method of safety light curtain - Google Patents
Scanning method of safety light curtain Download PDFInfo
- Publication number
- CN111221120A CN111221120A CN201811463927.3A CN201811463927A CN111221120A CN 111221120 A CN111221120 A CN 111221120A CN 201811463927 A CN201811463927 A CN 201811463927A CN 111221120 A CN111221120 A CN 111221120A
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- China
- Prior art keywords
- scanning
- light
- tubes
- signals
- receiving
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
Abstract
The invention provides a scanning method of a safety light curtain, which comprises a light projector, a plurality of light projecting transmitting tubes, a light receiver, a plurality of light receiving tubes and output processing: the method comprises the following steps: the method comprises the following steps of (1) segmented scanning, wherein a plurality of light projecting and emitting tubes at the end of a light projector are divided into a plurality of segments to be independently scanned, and light receiving and receiving tubes at the end of a light receiver are used for carrying out the corresponding number of segmented scanning; step two: the signals are collected, and each segmented light receiving unit at the light receiver end independently preprocesses the signals and then combines and collects the signals to the 1 st segment of scanning unit; the total number M of the transmitting tubes or receiving tubes is divided into n sections of independent scanning units, and the number of the transmitting tubes or the receiving tubes of the n sections of independent scanning units is the same or different or partially the same. After the signals of the n sections of independent scanning units at the light receiver end are processed, all the signals are parallelly connected and collected to the 1 st section of scanning unit for output pre-processing. The method adopts a sectional scanning and gathering processing mode, has short scanning period, and can quickly react with the product, thereby greatly improving the scanning efficiency.
Description
Technical Field
The present invention relates to a safety light curtain, and more particularly, to a scanning method of a safety light curtain.
Background
At present, the safe light curtain in the market has a long scanning period due to the scanning mode, if the traditional light beam scanning mode is used for scanning one by one from head to tail, the scanning period of the mode is long, and the reaction speed of the product is greatly limited.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a scanning method of a safety light curtain.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a scanning method of a safety light curtain comprises a light projector, a plurality of light projecting emitting tubes, a light receiver, a plurality of light receiving tubes and output processing:
the method comprises the following steps: the method comprises the following steps of (1) segmented scanning, wherein a plurality of light projecting and emitting tubes at the end of a light projector are divided into a plurality of segments to be independently scanned, and light receiving and receiving tubes at the end of a light receiver are used for carrying out the corresponding number of segmented scanning;
step two: the signals are collected, and each segmented light receiving unit at the light receiver end independently preprocesses the signals and then combines and collects the signals to the 1 st segment of scanning unit;
the total number M of the transmitting tubes or receiving tubes is divided into n sections of independent scanning units, and the number of the transmitting tubes or the receiving tubes of the n sections of independent scanning units is the same or different or partially the same.
After the signals of the n sections of independent scanning units at the light receiver end are processed, all the signals are parallelly connected and collected to the 1 st section of scanning unit for output pre-processing.
The invention has the beneficial effects that: the method for scanning the safety light curtain adopts a sectional scanning and gathering processing mode, has short scanning period, and can quickly respond to the product and greatly improve the scanning efficiency.
Drawings
FIG. 1 is a schematic flow diagram of a light projector according to the present invention;
FIG. 2 is a schematic flow chart of a light receiver according to the present invention;
fig. 3 is a flowchart of a conventional scanning method.
Detailed Description
As shown in fig. 1 to 2, a scanning method of a safety light curtain includes a light projector, a plurality of light projecting tubes, a light receiver, a plurality of light receiving tubes, and output processing:
the method comprises the following steps: the method comprises the following steps of (1) segmented scanning, wherein a plurality of light projecting and emitting tubes at the end of a light projector are divided into a plurality of segments to be independently scanned, and light receiving and receiving tubes at the end of a light receiver are used for carrying out the corresponding number of segmented scanning;
step two: the signals are collected, and each segmented light receiving unit at the light receiver end independently preprocesses the signals and then combines and collects the signals to the 1 st segment of scanning unit;
the total number M of the transmitting tubes or receiving tubes is divided into n sections of independent scanning units, and the number of the transmitting tubes or the receiving tubes of the n sections of independent scanning units is the same or different or partially the same.
After the signals of the n sections of independent scanning units at the light receiver end are processed, all the signals are parallelly connected and collected to the 1 st section of scanning unit for output pre-processing.
M ═ nX or M ═ X1+ X2 … + Xn;
m: total number of transmitting tubes or receiving tubes (total number of beams);
n: the number of sections of the transmitting tube or the receiving tube which are independently scanned;
x: the number of transmitting tubes or receiving tubes per section (the number of light beams per section);
the original M transmitting tubes or receiving tubes of the product are equally divided into n sections, each section is X transmitting tubes or receiving tubes, the sections are mutually independent and form a group, and the n sections of independent scanning units at the end of a light receiver are all parallelly connected and converged to the 1 st section of scanning unit for output pre-processing after signal processing;
during working, each section of the scanning system starts to scan from the first transmitting tube or receiving tube to X transmitting tubes or receiving tubes, the scanning period is shortened by n times compared with the original scanning period, the scanning speed is increased by n times, and the signals of n sections of independent scanning units at the end of the light receiver are processed and then are all parallelly connected and collected to the scanning unit at the 1 st section for output pre-processing, so that the detection speed of the product is greatly increased, and the product can be infinitely prolonged and applied.
as shown in fig. 3, the conventional scanning method starts from the first transmitting tube or receiving tube ① and (c.) sequentially scans one by one until the last transmitting tube or receiving tube, and then repeats the cycle from the first transmitting tube or receiving tube ①, wherein if the number of the transmitting tubes or receiving tubes (M) is larger, the time taken for scanning one cycle is longer, and the reaction speed of the product is greatly limited.
The invention has the beneficial effects that: the method for scanning the safety light curtain adopts a sectional scanning and gathering processing mode, has short scanning period, and can quickly respond to the product and greatly improve the scanning efficiency.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to explain the principles of the invention, and that various modifications and alterations can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (3)
1. A scanning method of a safety light curtain is characterized in that: including light projector and a plurality of light projector transmitting tube, photic ware and a plurality of photic receiver tube, output processing:
the method comprises the following steps: the method comprises the following steps of (1) segmented scanning, wherein a plurality of light projecting and emitting tubes at the end of a light projector are divided into a plurality of segments to be independently scanned, and light receiving and receiving tubes at the end of a light receiver are used for carrying out the corresponding number of segmented scanning;
step two: and (3) summarizing signals, wherein each segmented light receiving unit at the light receiver end is used for independently preprocessing the signals and then merging and collecting the preprocessed signals to the 1 st segment scanning unit.
2. The method as claimed in claim 1, wherein the total number M of the transmitting tubes or receiving tubes are divided into n segments of independent scanning units, and the number of the transmitting tubes or receiving tubes of the n segments of independent scanning units is the same or different or partially the same.
3. The method as claimed in claim 2, wherein the n segments of the independent scanning units at the light receiver end are processed and then all parallel-connected to the 1 st segment of the scanning unit for output pre-processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811463927.3A CN111221120A (en) | 2018-11-26 | 2018-11-26 | Scanning method of safety light curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811463927.3A CN111221120A (en) | 2018-11-26 | 2018-11-26 | Scanning method of safety light curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111221120A true CN111221120A (en) | 2020-06-02 |
Family
ID=70830491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811463927.3A Withdrawn CN111221120A (en) | 2018-11-26 | 2018-11-26 | Scanning method of safety light curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111221120A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699276A (en) * | 2013-12-31 | 2014-04-02 | 广州视睿电子科技有限公司 | Infrared geminate transistor touch screen scanning method and system |
| CN204421842U (en) * | 2015-01-06 | 2015-06-24 | 河南中原光电测控技术有限公司 | Laser light curtain measuring instrument |
| CN205941941U (en) * | 2016-08-25 | 2017-02-08 | 石家庄华燕交通科技有限公司 | Infrared measurement grating device |
-
2018
- 2018-11-26 CN CN201811463927.3A patent/CN111221120A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699276A (en) * | 2013-12-31 | 2014-04-02 | 广州视睿电子科技有限公司 | Infrared geminate transistor touch screen scanning method and system |
| CN204421842U (en) * | 2015-01-06 | 2015-06-24 | 河南中原光电测控技术有限公司 | Laser light curtain measuring instrument |
| CN205941941U (en) * | 2016-08-25 | 2017-02-08 | 石家庄华燕交通科技有限公司 | Infrared measurement grating device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200602 |