CN203658382U - Photoelectric rotation speed measurement instrument - Google Patents
Photoelectric rotation speed measurement instrument Download PDFInfo
- Publication number
- CN203658382U CN203658382U CN201420032675.XU CN201420032675U CN203658382U CN 203658382 U CN203658382 U CN 203658382U CN 201420032675 U CN201420032675 U CN 201420032675U CN 203658382 U CN203658382 U CN 203658382U
- Authority
- CN
- China
- Prior art keywords
- photoelectric
- measurement instrument
- measurement
- signal
- measuring
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The utility model relates to a photoelectric rotation speed measurement instrument. The measurement instrument is formed by a measurement instrument main body, a motor, a measurement fluted disc and a photoelectric sensor measurement groove. The measurement instrument main body is provided with a five-digit digital display speedometer, a switch, a function switch, a speed regulation rotary knob, a power output jack, a signal input port and a signal output port. The measurement instrument main body is internally provided with a single-chip microcomputer chip, a photoelectric detection circuit, a signal conditioning circuit and an A/D converting circuit. According to the photoelectric rotation speed measurement instrument, through processing photoelectric sensor signals and the calculating of a single-chip microcomputer, the functions of performing real-time calculating, measuring and displaying on different rotation speeds can be realized; and the photoelectric rotation speed measurement instrument is suitable for measurement and teaching experiments of subjects, such as electrotechnics, physics and the like.
Description
Technical field
The utility model relates to a kind of photoelectric whirl measuring apparatus, belongs to the field of application of electronic technology and experimental applications.
Background technology
Tachometric survey is an important content in the performance test of article for rotation power machine, in applications such as Aero-Space, ship power and rotating machineries, tach signal is also an important monitoring parameter, the size of rotating speed and variation can show that whether mechanical rotation is normal, not only reflect the duty of system, and other performance parameters are determined, especially in control system, play an important role, the accuracy of its measurement and reliability directly affect control accuracy and the security performance of system.
Along with the progress of modern science, precision, volume, the jamproof requirement to speed measuring system of many military affairs, industrial circle is more and more higher, and quick, high precision speed measuring system seems most important reliably.
Tachometric survey can be divided into by the mounting means of sensor: contact and contactless.Contact type measurement mode when usually requiring to measure, is measured axle and need be kept point-blank with measured axle, so be generally applied to middle and slow speed of revolution measurement.
Photoelectric sensor is the key element of realizing opto-electronic conversion in photodetector system, and it converts the infrared variation that waits light signal to measured variation, then further converts light signal to electric signal by photovalve.Photoelectric detecting method has the advantages such as precision is high, reaction is fast, antijamming capability is strong, and it is many to survey parameter, sensor simple in structure.Electro-optical pickoff is very extensive in the application detecting and control.
This measuring instrument tests the speed by photoelectric sensing mode, it is a kind of non-contact measurement, measuring instrument is by the processing to photosignal and the calculating of single-chip microcomputer, can realize the function such as real-time computation and measurement and demonstration to different rotating speeds, have and respond fast, accuracy advantages of higher, be suitable for measurement and the education experiment of the course such as electrotechnics, physics.
Utility model content
For the deficiency of existing measurement and experimental apparatus, photoelectric whirl measuring apparatus of the present utility model is in conjunction with photoelectric sensor and single-chip microcomputer, and adopted three kinds to measure fluted discs, can make student can better understand and grasp principle and the method for tachometric survey.The Circuits System of tachometric survey mainly comprises: processing, single-chip microcomputer and the digital display part of Electro-Optic Sensor System, signal.
Measuring instrument is made up of measuring instrument main frame, motor, measurement fluted disc and photoelectric sensor measuring flume; On measuring instrument main frame, be provided with the aobvious velometer of five-digit number, switch, functional switch, speed adjusting knob, power supply output plughole, signal input port and signal output port; Measure in main frame and there is singlechip chip, Photoelectric Detection, signal condition and A/D change-over circuit.
This measuring instrument has adopted the tachometric survey mode of photoelectric sensing type, in the time that motor rotates, utilize photoelectric sensor to carry out photosignal sampling by measuring fluted disc, make the signal that photoelectric receiving tube receives become light pulse by fluted disc to blocking the intermittence of light path simultaneously.By signal conditioning circuit and A/D conversion, the pulse signal that photoelectric sensor is exported is converted to digital signal and sends into single-chip microcomputer, and single-chip microcomputer, to the step-by-step counting receiving, after processing as calculated, thereby calculates rotating speed, demonstrates result by digital display tube.
That the singlechip chip of this measuring instrument adopts is low-power consumption, high performance 8 single-chip microcomputer STC89S52.It combines the high speed of CMOS and the low-power consumption feature of high density technology and CMOS, its measured MCS-51 single-chip microcomputer architecture and order set, belong to 89C51 Strong MCU version, the more functions such as integrated clock output and up or down counter, built-in 8 CPU (central processing unit) of 89S52,256 byte inner data-carrier store RAM, 8k sheet built-in system programmable storage ROM, 32 two-way I/O ports, 3 16 bit timings/counters and 5 two-stage interrupt structures, a full duplex serial communication port, sheet internal clock oscillatory circuit.In addition, 89S52 also can work in low-power consumption mode, can select free time and power-down mode by software, also can under idle pulley, freeze CPU and RAM timer, serial port and interrupt system maintain its function, under power-down mode, can preserve RAM data.
The measurement fluted disc of this measuring instrument has a perforation, be symmetrical in two perforations of diameter and four perforation three types of vertical symmetry.The measurement situation of different rotating speeds be can be applied to respectively, and can the measuring method under different measuring mode and the impact on speed error be compared with the measurement dish in monodentate hole.
In the time that motor rotates, due to blocking of perforation on measurement fluted disc, photoelectric receiving tube can not receive the light signal that power valve is sent.Therefore,, in the time that motor rotates, receiving tube can only receive light signal off and on.When the light signal that signal processing system receives receiving tube is converted to pulse electrical signal and tests the speed, pulse electric signal is counted, the timer of single-chip microcomputer inside starts timing simultaneously, the rotating speed that just can calculate motor according to the number of pulse electrical signal and time used, finally shows rotating speed by digital display tube.
Brief description of the drawings
Fig. 1 is measuring instrument main frame outside drawing, wherein 1 be the aobvious velometer, the 2nd of five-digit number, switch, the 3rd, functional switch, the 4th, speed adjusting knob, the 5th, power supply output plughole, the 6th, signal input port, the 7th, signal output port.
Fig. 2 measures the composition diagram of installing.Wherein 8 are motor power lines, the 9th, motor, the 10th, photoelectric sensor measuring flume, the 11st, photosignal line, the 12nd, motor reel, the 13rd, photoelectric sensor, the 14th, measure fluted disc.
Fig. 3 is photoelectric sensing testing circuit figure.
Embodiment
By reference to the accompanying drawings, illustrate work and the circuit conditions of photoelectric whirl measuring apparatus below.
The transmitting illuminant of the photoelectric sensor of this measuring instrument can be selected the IR333C-A infrarede emitting diode of Everlight company. and this light emitting diode has the features such as reliability is high, radiation intensity is large, forward voltage is low, is suitable for detection type sensor.And the photoelectric apparatus of the photoelectric sensor of measuring instrument can be selected the infrared photodiode of the PD333-3C of Everlight company, support the use with infrarede emitting diode, light signal is converted to electric signal, its signal power represents the state of examined object.
This measuring instrument can carry out the measurement of real electrical machinery rotating speed by the coupling of measuring fluted disc, measuring instrument is also furnished with motor simultaneously, by the speed adjusting knob of measuring instrument main frame, can regulate the motor speed of being furnished with, and binding function selector switch, the measurement fluted disc center that has different perforations is fixed on machine shaft, then measurement fluted disc is placed in the middle of sensor measurement groove.After switching on power, the infrarede emitting diode in measuring flume is luminous, if in groove without shade, receive photodiode sensitization conducting, now, the voltage that is input to amplifier is 0V, external interrupt signal end output high level.If there is shade in groove, reception diode can not receive light signal, and reception diode disconnects, and the voltage that is input to amplifier is 5V, external interrupt signal end output low level.
The pulse signal of photodiode output first converts the pulse signal of 5V to after coupling amplification, then is input to the external interrupt P3.2 mouth of single-chip microcomputer STC89S52, after single-chip microcomputer is processed, calculates motor speed output display.Its signal output and input port adopt 5 core aviation sockets simultaneously, signal can be transferred to oscillograph show by signal output port.
This measuring instrument, by the processing to photoelectric sensing signal and the calculating of single-chip microcomputer, can be realized the function such as real-time computation and measurement and demonstration to different rotating speeds, is suitable for measurement and the education experiment of the course such as electrotechnics, physics.
Claims (3)
1. a photoelectric whirl measuring apparatus, is characterized in that: measuring instrument is made up of measuring instrument main frame, motor, measurement fluted disc and photoelectric sensor measuring flume; On measuring instrument main frame, be provided with the aobvious velometer (1) of five-digit number, switch (2), functional switch (3), speed adjusting knob (4), power supply output plughole (5), signal input port (6) and signal output port (7); Measure in main frame and there is singlechip chip, Photoelectric Detection, signal condition and A/D change-over circuit.
2. photoelectric whirl measuring apparatus according to claim 1, is characterized in that: that the singlechip chip in its measuring instrument main frame adopts is 8 single-chip microcomputer STC89S52.
3. photoelectric whirl measuring apparatus according to claim 1, is characterized in that: it is measured, and fluted disc has a perforation, is symmetrical in two perforations of diameter, four perforation three types of vertical symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032675.XU CN203658382U (en) | 2014-01-19 | 2014-01-19 | Photoelectric rotation speed measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032675.XU CN203658382U (en) | 2014-01-19 | 2014-01-19 | Photoelectric rotation speed measurement instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203658382U true CN203658382U (en) | 2014-06-18 |
Family
ID=50924759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420032675.XU Expired - Fee Related CN203658382U (en) | 2014-01-19 | 2014-01-19 | Photoelectric rotation speed measurement instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203658382U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092880A (en) * | 2015-08-11 | 2015-11-25 | 安徽科技学院 | Device for shaft rotation speed measurement and method thereof |
| CN105181991A (en) * | 2015-09-30 | 2015-12-23 | 成都川睿科技有限公司 | Engine speed measurement system |
| CN106053872A (en) * | 2016-06-27 | 2016-10-26 | 西南大学 | Speed measuring instrument based on infrared rays |
| CN114705232A (en) * | 2022-03-16 | 2022-07-05 | 南京苏试广博环境可靠性实验室有限公司 | Singlechip infrared photoelectric speed measuring system |
| CN114705232B (en) * | 2022-03-16 | 2024-06-04 | 南京苏试广博环境可靠性实验室有限公司 | Infrared photoelectric rotary speed measuring system of single chip microcomputer |
-
2014
- 2014-01-19 CN CN201420032675.XU patent/CN203658382U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092880A (en) * | 2015-08-11 | 2015-11-25 | 安徽科技学院 | Device for shaft rotation speed measurement and method thereof |
| CN105181991A (en) * | 2015-09-30 | 2015-12-23 | 成都川睿科技有限公司 | Engine speed measurement system |
| CN106053872A (en) * | 2016-06-27 | 2016-10-26 | 西南大学 | Speed measuring instrument based on infrared rays |
| CN114705232A (en) * | 2022-03-16 | 2022-07-05 | 南京苏试广博环境可靠性实验室有限公司 | Singlechip infrared photoelectric speed measuring system |
| CN114705232B (en) * | 2022-03-16 | 2024-06-04 | 南京苏试广博环境可靠性实验室有限公司 | Infrared photoelectric rotary speed measuring system of single chip microcomputer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107340021B (en) | Intelligent remote water meter system based on Zigbee network | |
| CN203658382U (en) | Photoelectric rotation speed measurement instrument | |
| CN104990597A (en) | Magnetic pulse electronic water meter | |
| CN203998493U (en) | Portable elevator intelligent detecting instrument | |
| CN203785709U (en) | Multi-sensor data concentration acquisition system | |
| CN203689786U (en) | Multifunctional rotating speed measuring instrument based on microprocessor | |
| CN203323808U (en) | Water meter measurement module | |
| CN203489914U (en) | A wind-driven generator parameter integrated monitoring apparatus based on a STD bus | |
| CN200976006Y (en) | Light-sensitive Z element rotation speed sensor | |
| CN202330330U (en) | Gas dew point measuring device based on humiture detection | |
| CN204085560U (en) | Subway internal environment quality online detection instrument | |
| CN204882571U (en) | Blood glucose meter based on zigbee | |
| WO2020200009A1 (en) | Intelligent gas meter anti-interference metering system | |
| CN209485465U (en) | A kind of intelligent gas meter with anti-interference function of measuring | |
| CN202387589U (en) | Centrifuge velometer based on programmable logic controller | |
| CN203385749U (en) | Wind speed and wind direction measuring device of DSP-based miniature meteorological station | |
| CN201795876U (en) | Digital thermometer | |
| CN202305075U (en) | Non-contact torque sensor | |
| CN204788510U (en) | Magnetic pulse formula electron water gauge | |
| CN209103670U (en) | A kind of photoelectrical coupler mileometer experimental provision | |
| CN204881703U (en) | Many parameter measurement of agricultural appearance | |
| CN203117253U (en) | Portable multipurpose tester based on ARM | |
| CN203643445U (en) | Quick farmland soil moisture measuring instrument | |
| CN203025133U (en) | Cotton moisture tester | |
| CN207318521U (en) | A kind of magnetic induction air velocity transducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20170119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |