CN112882120B - Novel line synchronization system for measuring grating lines - Google Patents
Novel line synchronization system for measuring grating lines Download PDFInfo
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- CN112882120B CN112882120B CN202110125012.7A CN202110125012A CN112882120B CN 112882120 B CN112882120 B CN 112882120B CN 202110125012 A CN202110125012 A CN 202110125012A CN 112882120 B CN112882120 B CN 112882120B
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- power supply
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- 238000001914 filtration Methods 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims abstract description 4
- 230000006641 stabilisation Effects 0.000 claims abstract description 4
- 238000011105 stabilization Methods 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a novel line synchronization system for measuring grating lines, which comprises a transmitter, a receiver, a sensor power supply module, a coding modulation module and a filtering demodulation module, wherein the sensor power supply module adopts a DCDC switching power supply to supply power to the transmitter and the receiver of the system; the code modulation module comprises a voltage reduction and voltage stabilization circuit and a switching tube driving circuit; the filtering demodulation module comprises an alternating current coupling + RC filtering circuit, a direct current bias circuit and a switching tube conversion circuit; according to the invention, through the innovative design in the aspect of circuits, high-frequency information is loaded on the power supply line through code modulation between the sensors, and then the high-frequency information is restored through filtering demodulation, so that the synchronization between the power supply lines is realized, the purposes that only two lines are used for power supply transmission and line synchronization are achieved, the number of additional synchronous signal lines is reduced, and the utilization rate of cables is increased.
Description
Technical Field
The invention relates to a measuring light curtain adopting a line synchronization mode, in particular to a novel line synchronization system for measuring grating lines.
Background
The measuring light curtain is a special photoelectric sensor, is a high-precision light curtain with higher technical requirements derived from a safe light curtain, comprises a transmitter and a receiver, is measured by a single set or multiple sets of sensors, and transmits signals. The measuring light curtain is widely applied and can almost cover all detection and measurement fields. Different applications need different output signals for the customer, and the output signals that are common today include switching value signal, analog quantity signal, 485 signals, etc. and the difference synchronization line and power cord are above 10 lines at least, greatly increase the site operation wiring degree of difficulty.
Disclosure of Invention
The present invention is directed to a system for measuring a new profile of a grating line, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a novel line synchronization system for measuring grating lines comprises a transmitter, a receiver, a sensor power supply module, a coding modulation module and a filtering demodulation module, wherein the sensor power supply module adopts a DCDC switching power supply to supply power to the transmitter and the receiver of the system, and a power supply chip has a wide voltage input range to adapt to wide-variation power supply voltage; the code modulation module comprises a voltage reduction and stabilizing circuit and a switching tube driving circuit; the filtering demodulation module comprises an alternating current coupling + RC filtering circuit, a direct current bias circuit and a switching tube conversion circuit; firstly, an input direct-current power supply V1 is reduced to V2 voltage by a transmitter through a voltage reduction and stabilizing circuit, then an MCU outputs a high-frequency coding signal to be loaded to a switching tube driving circuit to realize the switching of voltage output between V1 and V2, the default V1 represents information '1', and the default V2 represents information '0'; the receiver carries out alternating current coupling on the signal through an alternating current coupling and RC filter circuit, then carries out superposition direct current bias through a direct current bias circuit, and finally converts the signal into a low-voltage pulse signal which can be identified by the MCU through a switching tube of a switching tube conversion circuit, thereby demodulating high-frequency communication information.
The invention has the beneficial effects that: according to the invention, through the innovative design in the aspect of circuits, high-frequency information is loaded on the power supply line through code modulation between the sensors, and then the high-frequency information is restored through filtering demodulation, so that the synchronization between the power supply lines is realized, the purposes that only two lines are used for power supply transmission and line synchronization are achieved, the number of additional synchronous signal lines is reduced, and the utilization rate of cables is increased.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples:
as shown in fig. 1, a novel line synchronization system for measuring grating lines includes a transmitter, a receiver, a sensor power module, a code modulation module, and a filter demodulation module, wherein the sensor power module adopts a DCDC switching power supply to supply power to the transmitter and the receiver of the system, and the power chip has a wide voltage input range to adapt to a wide variation of power voltage; the code modulation module comprises a voltage reduction and voltage stabilization circuit and a switching tube driving circuit; the filtering demodulation module comprises an alternating current coupling + RC filtering circuit, a direct current bias circuit and a switching tube conversion circuit; firstly, an input direct-current power supply V1 is reduced to V2 voltage by a transmitter through a voltage reduction and stabilization circuit, then an MCU outputs a high-frequency coding signal to be loaded to a switching tube driving circuit to realize the switching of voltage output between V1 and V2, the default V1 represents information '1', and the default V2 represents information '0'; the receiver carries out alternating current coupling on the signal through an alternating current coupling and RC filter circuit, then carries out superposition direct current bias through a direct current bias circuit, and finally converts the signal into a low-voltage pulse signal which can be identified by the MCU through a switching tube of a switching tube conversion circuit, thereby demodulating high-frequency communication information.
The number of the 2 extra synchronous signal wires is reduced, so that the sizes of the light curtain outgoing wire cable and the navigation plug are obviously reduced, and the man-hour of manual wire welding is reduced. The convenience is brought to customer site operation, and the fewer the cables, the less the failure rate and mutual interference.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The embodiments are therefore to be considered in all respects as illustrative and all changes which come within the meaning and range of equivalency are therefore intended to be embraced therein.
Claims (1)
1. A novel line synchronization system for measuring grating lines is characterized by comprising a transmitter, a receiver, an MCU and a sensor power supply module; the transmitter comprises a coding modulation module, the receiver comprises a filtering demodulation module, the sensor power supply modules adopt a DCDC switching power supply to supply power to the transmitter and the receiver of the system, and the power supply chip has a wide voltage input range to adapt to widely-changed power supply voltage; the code modulation module comprises a voltage reduction and stabilizing circuit and a switching tube driving circuit; the filtering demodulation module comprises an alternating current coupling + RC filtering circuit, a direct current bias circuit and a switching tube conversion circuit; high-frequency information is loaded on a power line between sensors through coded modulation, then the high-frequency information is restored through filtering demodulation, so that the synchronization between the power lines is realized, two lines are used for power transmission and line synchronization, and additional synchronous signal lines are reduced, firstly, an input direct-current power supply V1 is reduced to V2 voltage through a voltage reduction and stabilization circuit by a transmitter, then, an MCU outputs high-frequency coded signals to be loaded on a switching tube driving circuit to realize the switching of voltage output between V1 and V2, the default V1 represents information '1', and the default V2 represents information '0'; the receiver carries out alternating current coupling on the signal through an alternating current coupling and RC filter circuit, then carries out superposition direct current bias through a direct current bias circuit, and finally converts the signal into a low-voltage pulse signal which can be identified by the MCU through a switching tube of a switching tube conversion circuit, thereby demodulating high-frequency communication information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110125012.7A CN112882120B (en) | 2021-01-29 | 2021-01-29 | Novel line synchronization system for measuring grating lines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110125012.7A CN112882120B (en) | 2021-01-29 | 2021-01-29 | Novel line synchronization system for measuring grating lines |
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| Publication Number | Publication Date |
|---|---|
| CN112882120A CN112882120A (en) | 2021-06-01 |
| CN112882120B true CN112882120B (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110125012.7A Active CN112882120B (en) | 2021-01-29 | 2021-01-29 | Novel line synchronization system for measuring grating lines |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724453A (en) * | 2012-05-16 | 2012-10-10 | Tcl集团股份有限公司 | Television |
| CN104299385B (en) * | 2014-10-16 | 2018-01-12 | 中国石油集团渤海钻探工程有限公司 | Rotary wireless power and signal transmission system for measurement while drilling instrument |
| CN205040338U (en) * | 2015-09-21 | 2016-02-24 | 重庆星联云科科技发展有限公司 | Big -arch shelter is rolled up curtain machine and is rolled up curtain control system |
| CN105259588B (en) * | 2015-11-04 | 2017-12-19 | 常州工学院 | A kind of the light curtain detection means and its method of no special synchronous line |
| CN210225819U (en) * | 2019-06-24 | 2020-03-31 | 山东中大电源科技有限公司 | Unidirectional power line carrier LED dimming system |
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- 2021-01-29 CN CN202110125012.7A patent/CN112882120B/en active Active
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| CN112882120A (en) | 2021-06-01 |
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