CN106053872A - Speed measuring instrument based on infrared rays - Google Patents
Speed measuring instrument based on infrared rays Download PDFInfo
- Publication number
- CN106053872A CN106053872A CN201610478592.7A CN201610478592A CN106053872A CN 106053872 A CN106053872 A CN 106053872A CN 201610478592 A CN201610478592 A CN 201610478592A CN 106053872 A CN106053872 A CN 106053872A
- Authority
- CN
- China
- Prior art keywords
- infrared ray
- infrared
- signal
- ultrared
- tachometer
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
Abstract
The invention relates to a speed measuring instrument based on infrared rays. The speed measuring instrument includes an infrared ray speed measurement device, the infrared ray speed measurement device includes an infrared ray emitting pipe for emitting infrared rays and an infrared ray receiving pipe for receiving infrared rays, a tooth disc is arranged between the infrared ray emitting pipe and the infrared ray receiving pipe, when the tooth disc rotates, the infrared ray optical path between the infrared ray emitting pipe and the infrared ray receiving pipe is intermittent due to the shielding of the gear teeth, and the signal processing circuit converts the optical signals of the change into electric impulse signals, one pulse signal represents the tooth disc rotating over one tooth. The main controller counts the pulse, and meanwhile, the received pulses in a certain number can be counted by an internal timer, and the rotating speed can be calculated based on the pulse number and the consumed time. The speed measuring instrument based on infrared radiation technology is simple in structure and convenient to install, has less requirement on surrounding environment, and is wide in dynamic measurement scope and high in measurement precision.
Description
Technical field
The present invention relates to a kind of based on ultrared tachometer of measuring.
Scape technology
The method measuring spinner velocity is a lot, but most more complicated.At present, the tachymeter measuring rotating speed mainly has four
Kind: mechanical type, electromagnetic type, photo-electric and laser type.Mechanical type mainly utilizes centrifugal principle, by one with consolidating that axle rotates
Determining quality weight drives free axle sleeve to move up and down, and obtains the letter of measurement result principle according to different rotating speeds correspondence not coaxial sleeve position
Single direct, it is not required to extra electric equipment, it is adaptable to required precision is the highest, the tachometric survey occasion of contact.Electromagnetic type system by
Electromagnetic transducer and the fluted disc composition being mounted on an axle, main axis band active toothed disk rotates, causes electricity when teeth are by sensor
Road magnetic resistance change rate, forms pulse after amplifying shaping, obtains tachometer value by pulse.Due to by fluted disc machining accuracy, teeth
Minimum resolved intervals, circuit maximum count frequency etc. limit, certainty of measurement it cannot be guaranteed that.Photo-electric is similar to that electromagnetic type is tied
Structure, changes rotation fluted disc and makees photoelectric coded disk or chequered with black and white reflection strip, electromagnetic transducer is changed and makees photelectric receiver, logical
Cross the light pulse signal to reflecting and count to get measurement result.Due to by striped minimum resolved intervals, circuit maximum count
Frequencies etc. limit, certainty of measurement it cannot be guaranteed that, surveyed tachometer value is the same with electromagnetic type is the meansigma methods of two count pulse spacing.
Laser Doppler velocity technique (LDV) be one just at developing velocity measuring technique, obtained the wink of rotor by laser doppler
Time angular velocity, there is the highest Transient Rotate Speed Measuring precision in theory, but actual product precision be not high enough at present, and price is held high
Expensive, it is restricted in actual use.
Summary of the invention
The technical problem to be solved is to provide a kind of based on ultrared tachometer of measuring, and simple in construction is installed
Convenient, the highest to environmental requirement, and it is easily accomplished the measurement of rotating speed, there is wider range of dynamic measurement, certainty of measurement
High.
The technical scheme is that, based on ultrared tachometer of measuring, its feature exists
In, including infrared ray speed measuring device, signal processing apparatus, master controller and display；
Described infrared ray speed measuring device includes for launching ultrared infrared emission tube and for receiving infrared-ray
Infrared receiver tube, arranges fluted disc, described infrared receiver tube output light between infrared emission tube and infrared receiver tube
Signal；
Described signal processing apparatus for being converted into electricity arteries and veins by the optical signal that the described infrared receiver tube received exports
Rush signal；
Described master controller is used for receiving electric impulse signal, and carries out being calculated tach signal by signal；
Described display is connected with described master controller, shows for rotating speed.
Beneficial effects of the present invention: install fluted disc between infrared emission tube and infrared receiver tube, when fluted disc rotates,
Due to blocking of the gear teeth, off and on, signal processing is electric for the infrared ray light path between infrared emission tube and infrared receiver tube
The optical signal that this is changed by road is converted to electric impulse signal, and a pulse signal i.e. represents that fluted disc turns over a tooth.Master controller
Pulse is counted, simultaneously by its internal timer to receiving the pulse timing of some, according to pulse number and
Time used just can calculate rotating speed.Present invention tachometer of measuring based on Infrared Radiation Technology, simple in construction is easy for installation, right
Surrounding is less demanding, can be readily accomplished the measurement of rotating speed.Having wider range of dynamic measurement, certainty of measurement is relatively
High.
Further, described master controller is AT89C52 single-chip microcomputer.
Above-mentioned further scheme is used to provide the benefit that: to use single-chip microcomputer, low cost and dependable performance.
Further, described signal processing apparatus includes the first resistance R1, the minus earth of described infrared emission tube, anode
Connect and be connected with the colelctor electrode of audion Q1 after described first resistance R1, base series the 6th resistor R6 of described audion Q1
Be connected with I/O serial port pin P10 of described single-chip microcomputer afterwards, the colelctor electrode of described audion Q1 also connect after the second resistance R2 with institute
The negative electrode stating infrared receiver tube connects, and the plus earth of described infrared receiver tube, the negative electrode of described infrared receiver tube is also
Being connected with the input of phase inverter, in the reversed-phase output of described phase inverter and the first of described single-chip microcomputer, broken ends of fractured bone INT1 is connected.
Above-mentioned further scheme is used to provide the benefit that: signal processing apparatus circuit structure is simple, dependable performance.
Further, the first data terminal group P00-P07 of described single-chip microcomputer, the second data terminal group P20-P27 are all aobvious with described
Show that the signal end group of device connects.
Further, described display uses model to be the LCD MODULE of JHD12864, and this LCD MODULE uses
Model is the driving chip of HD44780, is in series with for regulating between power end and the ground terminal of described LCD MODULE
The contrast stating the slide rheostat of display contrast, the sliding end of described slide rheostat and described LCD MODULE is adjusted
Joint end connects.
Using above-mentioned further scheme to provide the benefit that: driving chip model is HD44780, this driving chip has mark
Accurate interface features, the time sequential routine of MCS-51 series monolithic；Inside modules has the self-defining character RAM of 64 bytes,
Can customize display character.This LCD MODULE uses+5V power supply to power, and has the I/O data of 20 pins and single-chip microcomputer
Port connects, and uses the contrast of slide rheostat regulation display, and circuit structure is simple, installs the most more convenient.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is the circuit theory diagrams of the present invention.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
Non-for limiting the scope of the present invention.
As it is shown in figure 1, based on ultrared tachometer of measuring, including infrared ray speed measuring device, signal processing apparatus 3, master
Controller 4 and display 5；Infrared ray speed measuring device includes for launching ultrared infrared emission tube 1 and red for receiving
The infrared receiver tube 2 of outside line, arranges fluted disc 6, infrared receiver tube 2 between infrared emission tube 1 and infrared receiver tube 2
Output optical signal；Signal processing apparatus 3 for being converted into electricity arteries and veins by the optical signal that the described infrared receiver tube 2 received exports
Rush signal；Master controller 4 is used for receiving electric impulse signal, and carries out being calculated tach signal by signal；Display 5 is with described
Master controller 4 connects, and shows for rotating speed.
As in figure 2 it is shown, AT89C52 single-chip microcomputer selected by master controller 4.Signal processing apparatus 3 includes the first resistance R1, described
The minus earth of infrared emission tube 1, is connected with the colelctor electrode of audion Q1 after the anode described first resistance R1 of series connection, described three
It is connected with I/O serial port pin P10 of described single-chip microcomputer after base series the 6th resistor R6 of pole pipe Q1, described audion Q1's
Colelctor electrode the second resistance (R2) negative electrode afterwards with described infrared receiver tube 2 of also connecting is connected, the sun of described infrared receiver tube 2
Pole ground connection, the negative electrode of described infrared receiver tube 2 is also connected with the input of phase inverter, the reversed-phase output of described phase inverter with
In the first of described single-chip microcomputer, broken ends of fractured bone INT1 connects.First data terminal group P00-P07 of single-chip microcomputer, the second data terminal group P20-
P27 all signal end groups with described display 5 are connected.
The LCD MODULE that display 5 uses model to be JHD12864, this LCD MODULE employing model is
The driving chip of HD44780, is in series with for adjustable liquid crystal display display module between power end and the ground terminal of LCD MODULE
The slide rheostat RW of contrast, the sliding end of slide rheostat RW is connected with the contrast adjustment end of LCD MODULE.
Upper described it is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and former
Within then, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (5)
1. based on ultrared tachometer of measuring, it is characterised in that include infrared ray speed measuring device, signal processing apparatus (3), master
Controller (4) and display (5)；
Described infrared ray speed measuring device includes for launching ultrared infrared emission tube (1) and being used for the red of receiving infrared-ray
Outside line receives pipe (2), described infrared receiver tube (2) output optical signal；
Described signal processing apparatus (3) is for being converted into electricity by the optical signal that the described infrared receiver tube (2) received exports
Pulse signal；
Described master controller (4) is used for receiving electric impulse signal, and carries out counting to get tach signal by electric impulse signal；
Described display (5) is connected with described master controller (4), shows for rotating speed.
The most according to claim 1 based on ultrared tachometer of measuring, it is characterised in that described master controller (4) is
AT89C52 single-chip microcomputer.
The most according to claim 2 based on ultrared tachometer of measuring, it is characterised in that also to include phase inverter, described
Signal processing apparatus (3) includes the first resistance (R1) and audion (Q1), the minus earth of described infrared emission tube (1), sun
Pole described first resistance (R1) colelctor electrode with audion (Q1) afterwards of connecting is connected, the base series the 6th of described audion (Q1)
Resistor (R6) is connected with I/O serial port pin P10 of described single-chip microcomputer afterwards, and the colelctor electrode of described audion (Q1) also connects second
Resistance (R2) negative electrode with described infrared receiver tube (2) afterwards is connected, and the plus earth of described infrared receiver tube (2) is described
The negative electrode of infrared receiver tube (2) also input with described phase inverter is connected, and the reversed-phase output of described phase inverter is with described
In the first of single-chip microcomputer, broken ends of fractured bone INT1 connects.
The most according to claim 2 based on ultrared tachometer of measuring, it is characterised in that the first number of described single-chip microcomputer
According to end group (P00-P07), the second data terminal group (P20-P27), all signal end groups with described display (5) are connected.
The most according to claim 4 based on ultrared tachometer of measuring, it is characterised in that described display (5) uses
Model is the LCD MODULE of JHD12864, and this LCD MODULE uses model to be the driving chip of HD44780, described liquid
It is in series with the slide rheostat for regulating described display (5) contrast between power end and the ground terminal of brilliant display module
RW, the sliding end of described slide rheostat is connected with the contrast adjustment end of described LCD MODULE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610478592.7A CN106053872A (en) | 2016-06-27 | 2016-06-27 | Speed measuring instrument based on infrared rays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610478592.7A CN106053872A (en) | 2016-06-27 | 2016-06-27 | Speed measuring instrument based on infrared rays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106053872A true CN106053872A (en) | 2016-10-26 |
Family
ID=57165807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610478592.7A Pending CN106053872A (en) | 2016-06-27 | 2016-06-27 | Speed measuring instrument based on infrared rays |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106053872A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526326A (en) * | 2016-12-21 | 2017-03-22 | 广西水利电力职业技术学院 | Multifunctional hand-operated megohmmeter |
| CN106593901A (en) * | 2016-12-26 | 2017-04-26 | 郑州云海信息技术有限公司 | Fan rotation speed regulating and control device and method |
| CN107930086A (en) * | 2017-12-22 | 2018-04-20 | 武汉市龙五物联网络科技有限公司 | A kind of fitness equipment and its speed-measuring method with speed measuring function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1102039A1 (en) * | 1999-11-18 | 2001-05-23 | HERA Rotterdam B.V. | Incremental and absolute detector head with full signal processing ( photo ASIC, ASIC ) |
| CN102981015A (en) * | 2011-09-05 | 2013-03-20 | 丁元庆 | Infrared digital speed-detection control system for gear purpose |
| CN203658382U (en) * | 2014-01-19 | 2014-06-18 | 四川农业大学 | Photoelectric rotation speed measurement instrument |
| CN104374943A (en) * | 2014-11-21 | 2015-02-25 | 无锡科思电子科技有限公司 | Speed detecting device for car engine |
| CN205749553U (en) * | 2016-06-27 | 2016-11-30 | 西南大学 | Based on ultrared tachometer of measuring |
-
2016
- 2016-06-27 CN CN201610478592.7A patent/CN106053872A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1102039A1 (en) * | 1999-11-18 | 2001-05-23 | HERA Rotterdam B.V. | Incremental and absolute detector head with full signal processing ( photo ASIC, ASIC ) |
| CN102981015A (en) * | 2011-09-05 | 2013-03-20 | 丁元庆 | Infrared digital speed-detection control system for gear purpose |
| CN203658382U (en) * | 2014-01-19 | 2014-06-18 | 四川农业大学 | Photoelectric rotation speed measurement instrument |
| CN104374943A (en) * | 2014-11-21 | 2015-02-25 | 无锡科思电子科技有限公司 | Speed detecting device for car engine |
| CN205749553U (en) * | 2016-06-27 | 2016-11-30 | 西南大学 | Based on ultrared tachometer of measuring |
Non-Patent Citations (1)
| Title |
|---|
| 刘春艳: "《电子技术基础》", 31 March 2016 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526326A (en) * | 2016-12-21 | 2017-03-22 | 广西水利电力职业技术学院 | Multifunctional hand-operated megohmmeter |
| CN106593901A (en) * | 2016-12-26 | 2017-04-26 | 郑州云海信息技术有限公司 | Fan rotation speed regulating and control device and method |
| CN107930086A (en) * | 2017-12-22 | 2018-04-20 | 武汉市龙五物联网络科技有限公司 | A kind of fitness equipment and its speed-measuring method with speed measuring function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4162445A (en) | Digital speedometer | |
| CN106053872A (en) | Speed measuring instrument based on infrared rays | |
| CN202230099U (en) | Wind-cup type fiber wind speed detector and wind speed probe | |
| CN104266584A (en) | Automatic feedback light intensity adjusting device for laser self-mixing interference system | |
| CN109405851B (en) | Testing device and testing method based on auto-collimation null indicator and fiber-optic gyroscope | |
| DE59203460D1 (en) | FLOWMETER. | |
| CN205749553U (en) | Based on ultrared tachometer of measuring | |
| US4851666A (en) | Optical flow meter | |
| CN104458762B (en) | Digital optical fiber sensor-based detection method for quality of ABS gear ring | |
| CN101520362B (en) | Air leakage measuring device of engine piston | |
| CN106525302A (en) | High-precision key phase-based non-contact dynamic measurement system for measuring torque of revolving shaft | |
| CN105092880A (en) | Device for shaft rotation speed measurement and method thereof | |
| WO2020200009A1 (en) | Intelligent gas meter anti-interference metering system | |
| CN100464166C (en) | Grating electronic counting pulse generator for fine gas meter | |
| CN209978988U (en) | Measuring instrument sampling counting assembly based on photoelectric reflection | |
| CN205333671U (en) | Wind speed collector based on dual -frenquency meter | |
| CN202171599U (en) | Breeze velocity meter | |
| CN103954788B (en) | Locomotive photoelectric sensor displacement method of reseptance and signal pickup assembly | |
| CN102981015A (en) | Infrared digital speed-detection control system for gear purpose | |
| CN205067516U (en) | Engine system of testing speed | |
| CN201463946U (en) | Engine piston air loss measuring instrument | |
| CN204613242U (en) | A kind of wind speed tester | |
| CN2349555Y (en) | Outdoor indicator for gas meter value | |
| CN201177636Y (en) | Calibrating apparatus for micro propeller current meter | |
| CN202869684U (en) | Rotary measurement apparatus of combustion gas temperature field |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |
|
| RJ01 | Rejection of invention patent application after publication |