CN102520205A - Light refection principle-based velocity measurement sensor - Google Patents
Light refection principle-based velocity measurement sensor Download PDFInfo
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- CN102520205A CN102520205A CN2011104248197A CN201110424819A CN102520205A CN 102520205 A CN102520205 A CN 102520205A CN 2011104248197 A CN2011104248197 A CN 2011104248197A CN 201110424819 A CN201110424819 A CN 201110424819A CN 102520205 A CN102520205 A CN 102520205A
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- gear
- tachogenerator
- photoelectric tube
- light reflection
- supply vcc
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Abstract
The invention discloses a light refection principle-based velocity measurement sensor. The velocity measurement sensor comprises a direct current power supply VCC, a gear and photoelectric pair transistors that enable a transmitting tube and a receiving tube to be packaged together. The direct current power supply VCC is electrically connected with the photoelectric pair transistors; and the photoelectric pair transistors are installed at a same side of the gear. According to the light refection principle-based velocity measurement sensor provided in the invention, defects of large installation space, complex installation structure, low reliability and high cost and the like in the prior art can be overcome; therefore, advantages of small volume, small installation space, simple structure, easiness of installation, easiness of maintenance, high reliability and low cost can be realized.
Description
Technical field
The present invention relates to sensor, particularly, relate to a kind of tachogenerator based on light reflection principle.
Background technology
Tachogenerator is the instrument of energy measurement measured object travelling speed, and the increment of unit interval intrinsic displacement is exactly a speed.Speed is vector, and size and Orientation is arranged, and the size of speed is called as speed, and speed comprises linear velocity and rotary speed, and corresponding with it just have the slotted line speed pickup and measure the rotary speed sensor, and they are collectively referred to as tachogenerator.
Tachogenerator is used very extensive, and it can be applicable to production equipment, extraordinary locomotive, wind-power electricity generation etc.Such as sheet material, the online cutting of tubing, cable or sand paper velocity survey etc.; Because they are noncontacting measurements, it is very suitable to measure the responsive object that maybe can't touch, like testing the speed of textiles such as flannelette, fur, coating or viscose glue surface, foam rubber surface object; Also has metal-processing industry like the control of the speed of measuring iron and steel, black soy sauce velocity survey, coating process etc.
Usually, contactless gear tachogenerator can be divided into two types of magnetic and light.Wherein, be when rotating based on the tachogenerator of electromagnetism according to gear, the changes of magnetic field that causes utilizes Hall element to be converted into electric signal to the magnetic field that changes, thus the rotating speed of prototype gear.The photo-electric gear sensor is a fluting (or punching) on gear, and on the both sides of gear photoelectric tube is installed, and causes the variation of electric signal when gear rotates according to the break-make of light, calculates the rotating speed of gear.
These two kinds of methods all require certain installing space, and the very narrow and small place in the space need to increase mechanical part and install with convenient, but this can increase cost again.
In realizing process of the present invention, the inventor finds to exist at least in the prior art that installing space is big, mounting structure is complicated, reliability is low and defective such as cost height.
Summary of the invention
The objective of the invention is to,, propose a kind of tachogenerator based on light reflection principle to the problems referred to above, with realize that volume is little, installing space is little, simple in structure, be easy to install, be easy to safeguard, reliability is high and the low advantage of cost.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts is: a kind of tachogenerator based on light reflection principle; Comprise direct supply VCC, gear and the photoelectric tube module that power valve and receiving tube are packaged together; Said direct supply VCC is electrically connected with the photoelectric tube module, and said photoelectric tube module is installed in the homonymy of gear.
Further, in said photoelectric tube module, power valve comprises the LED and the first voltage regulation resistance R1; The anode of said LED meets direct supply VCC, plus earth GND through the first voltage regulation resistance R1.
Further, in said photoelectric tube module, receiving tube comprises phototriode X2, the second voltage regulation resistance R2, high frequency noise filter capacitor C1 and comparer IC1; The base stage of said phototriode X1 and LED photoelectricity are equipped with, collector through the second voltage regulation resistance R2 meet direct supply VCC, through high frequency noise filter capacitor C1 ground connection GND and connect the in-phase input end of comparer IC1, grounded emitter GND; The inverting input of comparer IC1 is reference voltage signal
input end, and the output terminal of comparer IC1 is voltage signal
output terminal.
Further, above-described tachogenerator based on light reflection principle is characterized in that, also comprises signal processing module;
Said signal processing module; Be used for voltage signal
according to the output of photoelectric tube module; Count or the timing processing, obtain the tach signal of gear.
Further, said signal processing module is a single-chip microcomputer.
The tachogenerator based on light reflection principle of various embodiments of the present invention; Owing to comprise direct supply VCC, gear and the photoelectric tube module that power valve and receiving tube are packaged together; Direct supply VCC is electrically connected with the photoelectric tube module, and the photoelectric tube module is installed in the homonymy of gear; Like this, utilize the reflection of light principle, be packaged together the power valve of photoelectric tube module and receiving tube, be installed in the homonymy of gear; When gear rotates, tooth is arranged and do not have the place of tooth to radiate the luminous flux of returning and can change, thereby cause that the receiving tube electric signal produces respective change, subsequent conditioning circuit obtains the rotary speed information of gear through the processing to this variable signal; Installing space is big in the prior art, mounting structure is complicated, reliability is low and defect of high cost thereby can overcome, with realize that volume is little, installing space is little, simple in structure, be easy to install, be easy to safeguard, reliability is high and the low advantage of cost.
Other features and advantages of the present invention will be set forth in instructions subsequently, and, partly from instructions, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the instructions of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of instructions, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the electrical principle synoptic diagram according to photoelectric tube module in the tachogenerator that the present invention is based on light reflection principle.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
According to the embodiment of the invention, a kind of tachogenerator based on light reflection principle is provided.As shown in Figure 1, present embodiment comprises direct supply VCC, gear and the photoelectric tube module that power valve and receiving tube are packaged together, and direct supply VCC is electrically connected with the photoelectric tube module, and the photoelectric tube module is installed in the homonymy of gear.
Wherein, in above-mentioned photoelectric tube module, power valve comprises the LED and the first voltage regulation resistance R1, and receiving tube comprises phototriode X2, the second voltage regulation resistance R2, high frequency noise filter capacitor C1 and comparer IC1; The anode of LED meets direct supply VCC, plus earth GND through the first voltage regulation resistance R1; The base stage of phototriode X1 and LED photoelectricity are equipped with, collector through the second voltage regulation resistance R2 meet direct supply VCC, through high frequency noise filter capacitor C1 ground connection GND and connect the in-phase input end of comparer IC1, grounded emitter GND; The inverting input of comparer IC1 is reference voltage signal
input end, and the output terminal of comparer IC1 is voltage signal
output terminal.
Further, in the above-described embodiments, also comprise signal processing module based on the tachogenerator of light reflection principle; Signal processing module; Be used for voltage signal
according to the output of photoelectric tube module; Count or the timing processing, obtain the tach signal of gear.Here, signal processing module can be single-chip microcomputer.
The tachogenerator based on light reflection principle of the foregoing description, during work, the light of LED emission is received by phototriode X1 through the reflection of gear; Phototriode X1 changes into voltage signal to the luminous flux that receives, and amplification outputs to high frequency noise filter capacitor C1; High frequency noise filter capacitor C1 filters out HF noise signal, is sent to the anode (being in-phase input end) of comparer IC1; Comparer IC1 is according to voltage reference signal
; The signal of high frequency noise filter capacitor C1 output; After nursing one's health into square-wave signal (being voltage signal
); Send into the single-chip microcomputer processing of counting or clock, thereby obtain the tach signal of gear.
The tachogenerator based on light reflection principle of the foregoing description utilizes the reflection of light principle, is packaged together the power valve of photoelectric tube module and receiving tube, is installed in the homonymy of gear; When gear rotates, tooth is arranged and do not have the place of tooth to radiate the luminous flux of returning and to change, thereby cause that the receiving tube electric signal produces respective change; Subsequent conditioning circuit passes through the processing to the electric signal of this variation, obtains the rotary speed information of gear.
Compared with prior art, the tachogenerator based on light reflection principle of the foregoing description need not be done special processing to gear, can reach simple in structure at least, volume is little, installing space is little, be easy to install, be easy to safeguard the advantage low with cost.
What should explain at last is: the above is merely the preferred embodiments of the present invention; Be not limited to the present invention; Although the present invention has been carried out detailed explanation with reference to previous embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. tachogenerator based on light reflection principle; It is characterized in that; Comprise direct supply VCC, gear and the photoelectric tube module that power valve and receiving tube are packaged together; Said direct supply VCC is electrically connected with the photoelectric tube module, and said photoelectric tube module is installed in the homonymy of gear.
2. the tachogenerator based on light reflection principle according to claim 1 is characterized in that, in said photoelectric tube module, power valve comprises the LED and the first voltage regulation resistance R1; The anode of said LED meets direct supply VCC, plus earth GND through the first voltage regulation resistance R1.
3. the tachogenerator based on light reflection principle according to claim 2 is characterized in that, in said photoelectric tube module, receiving tube comprises phototriode X2, the second voltage regulation resistance R2, high frequency noise filter capacitor C1 and comparer IC1; The base stage of said phototriode X1 and LED photoelectricity are equipped with, collector through the second voltage regulation resistance R2 meet direct supply VCC, through high frequency noise filter capacitor C1 ground connection GND and connect the in-phase input end of comparer IC1, grounded emitter GND; The inverting input of comparer IC1 is reference voltage signal
input end, and the output terminal of comparer IC1 is voltage signal
output terminal.
4. according to each described tachogenerator among the claim 1-3, it is characterized in that, also comprise signal processing module based on light reflection principle;
Said signal processing module; Be used for voltage signal
according to the output of photoelectric tube module; Count or the timing processing, obtain the tach signal of gear.
5. the tachogenerator based on light reflection principle according to claim 4 is characterized in that, said signal processing module is a single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104248197A CN102520205A (en) | 2011-12-16 | 2011-12-16 | Light refection principle-based velocity measurement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104248197A CN102520205A (en) | 2011-12-16 | 2011-12-16 | Light refection principle-based velocity measurement sensor |
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| Publication Number | Publication Date |
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| CN102520205A true CN102520205A (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104248197A Pending CN102520205A (en) | 2011-12-16 | 2011-12-16 | Light refection principle-based velocity measurement sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061217A (en) * | 2018-08-01 | 2018-12-21 | 上海理工大学 | Two-wire system optoelectronic sensor for wind speed circuit |
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| CN101701968A (en) * | 2009-11-10 | 2010-05-05 | 三一重工股份有限公司 | Detecting device and method for detecting at least one rotation parameter of rotating object |
| CN101750513A (en) * | 2010-01-21 | 2010-06-23 | 中国人民解放军国防科学技术大学 | Velocity measurement system for rail straight line moving matter |
| CN101865704A (en) * | 2010-07-08 | 2010-10-20 | 华中科技大学 | Photoelectric coded disk and manufacturing method and application thereof |
| CN202041173U (en) * | 2011-01-21 | 2011-11-16 | 北京中纺锐力机电有限公司 | Three-phase angular displacement sensor circuit |
| CN202453366U (en) * | 2011-12-16 | 2012-09-26 | 江南大学 | Speed measurement transducer based on light reflection principle |
-
2011
- 2011-12-16 CN CN2011104248197A patent/CN102520205A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701968A (en) * | 2009-11-10 | 2010-05-05 | 三一重工股份有限公司 | Detecting device and method for detecting at least one rotation parameter of rotating object |
| CN101750513A (en) * | 2010-01-21 | 2010-06-23 | 中国人民解放军国防科学技术大学 | Velocity measurement system for rail straight line moving matter |
| CN101865704A (en) * | 2010-07-08 | 2010-10-20 | 华中科技大学 | Photoelectric coded disk and manufacturing method and application thereof |
| CN202041173U (en) * | 2011-01-21 | 2011-11-16 | 北京中纺锐力机电有限公司 | Three-phase angular displacement sensor circuit |
| CN202453366U (en) * | 2011-12-16 | 2012-09-26 | 江南大学 | Speed measurement transducer based on light reflection principle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061217A (en) * | 2018-08-01 | 2018-12-21 | 上海理工大学 | Two-wire system optoelectronic sensor for wind speed circuit |
| CN109061217B (en) * | 2018-08-01 | 2021-03-02 | 上海理工大学 | Two-wire system photoelectric wind speed sensor circuit |
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Application publication date: 20120627 |