CN105353380A - Infrared light automatic focusing microscope on the basis of alternating current stabilized power supply - Google Patents
Infrared light automatic focusing microscope on the basis of alternating current stabilized power supply Download PDFInfo
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- CN105353380A CN105353380A CN201510537164.2A CN201510537164A CN105353380A CN 105353380 A CN105353380 A CN 105353380A CN 201510537164 A CN201510537164 A CN 201510537164A CN 105353380 A CN105353380 A CN 105353380A
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- infrared light
- alternating current
- temperature
- automatic focusing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
Abstract
The present invention discloses an infrared light automatic focusing microscope on the basis of an alternating current stabilized power supply. The infrared light automatic focusing microscope comprises a microcontroller module, an infrared emission module, an infrared light receiving module, a temperature detection module, a display module, a CPLD module, a stepping motor and a timing module. The infrared emission module, the infrared light receiving module, the temperature detection module, the display module and the timing module are connected with corresponding ports of the microcontroller module; and the microcontroller module is connected with the stepping motor through the CPLD module. Through adding a temperature measurement circuit of a temperature sensor on hardware of the infrared light automatic focusing microscope, the infrared light automatic focusing microscope on the basis of an alternating current stabilized power supply is able to effectively reduce the influence of temperature variation on the ranging accuracy and improve the measurement accuracy of an infrared light range-measurement system.
Description
Technical field
The present invention relates to a kind of infrared light range measurement system, particularly relate to a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug, belong to range finding control field.
Background technology
Infrared light is a kind of machinery concussion in elastic medium, and it is that its frequency is at more than 20kHz caused by the concussion source contacted with medium.Because the speed of infrared light is much smaller relative to the light velocity, its travel-time is just detected than being easier to, and be easy to directional transmissions, good directionality, intensity controls well, thus utilize infrared light range finding to have very important purposes in a lot of distance measurement application, comprise Non-Destructive Testing, process measurement, robot measurement and location, and fluid level measurement etc.
In atmosphere, under normal temperature, the velocity of propagation of infrared light is 334m/s, but its velocity of propagation is by the impact of the factor such as temperature, humidity in air, and wherein temperature influence is comparatively large, and as temperature often raises 1 DEG C, the velocity of sound will increase about 0.6m/s.Therefore in identical interval measurement distance, because the wave propagation time is identical, the velocity of sound under different temperatures is different, so finally cause the distance measured unequal, in the exigent situation of range measurement accuracy, must measure temperature and compensate, to avoid temperature on the impact of measuring accuracy.Infrared light detection processed often relatively rapidly, convenient, calculating is simple, be easy to realization, and measuring accuracy is high.
Along with expanding economy, transportation is become increasingly prosperous, but is difficult to catch up with due to the hardware such as road condition, traffic administration, add drive overtake other vehicles, principle that to go out that car is deserted, mistake estimates spacing etc. subjective, the traffic hazard of collision is mutually occurred again and again.The essential measure addressed this problem is to install and can find range from motion tracking to the automobile in advancing, self-stopping device in risk distance.
Such as application number is a kind of infrared light distance-finding method of " 201210126584.8 ", belong to electronic measuring technology field, infrared transmitter and pulsed laser are in transmitting terminal, after transmitting terminal receives measuring command, pulsed laser triggers a bundle of pulsed laser, infrared transmitter triggers infrared light simultaneously, is undertaken phase-locked by the infrared light of triggering and external clock reference; Infrared light receiver and photodiode are in receiving end, after photodiode receives pulse laser, start timer, and after infrared light receiver obtains the infrared light received, timer stops, and obtains the transit time; Transit time is multiplied by the revised velocity of sound and obtains tested coarse range measuring value; Obtain phase differential, then accurate measurement part the invention enables receiver not to be subject to transmitter interference for obtaining measured distance, measure blind area greatly to reduce, improve the directive property of infrared distance measurement, within distance accuracy being brought up to an infrared light length, although this invention can be found range by infrared light, not yet consider the impact of temperature and measuring accuracy needs to be improved further.
And for example application number is a kind of device for regulating the measuring distance of infrared light electric-type distance measuring sensor of " 201420777929.0 ", it is characterized in that, comprise shell, described shell is located at the front side of infrared light electric-type distance measuring sensor, the transmission channel of the light that the infrared receiver end being provided with light and the infrared light electric-type distance measuring sensor being respectively used to be launched by the infrared emission end of infrared light electric-type distance measuring sensor in shell will be received and receiving cable, the rear end of described receiving cable is provided with the reception adjustable plate for the infrared light flux regulating the infrared receiver termination of infrared light electric-type distance measuring sensor to receive.This utility model can prevent the interference of extraneous light and emitting side light, and the infrared light flux that distance measuring sensor can be regulated to accept side joint receive, thus reach the object regulating measuring distance.
Summary of the invention
Technical matters to be solved by this invention provides a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug for the deficiency of background technology, it has low cost, high precision, and can effectively avoid reducing the impact of temperature variation on distance accuracy, improve the measuring accuracy of infrared light range measurement system effectively.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Based on an infrared light Automatic focusing microscope for alternating current steady voltage plug, comprise micro controller module, infrared transmission module, infrared light receiver module, temperature-measuring module, display module, CPLD module, stepper motor, timing unit and alternating current steady voltage plug; Described infrared transmission module, infrared light receiver module, temperature-measuring module, display module, timing unit are connected on the corresponding port of micro controller module, and described micro controller module is by CPLD model calling stepper motor;
Described alternating current steady voltage plug comprises sample circuit module, V/F conversion module, regulation and control module, clock module, input through keyboard module, servomotor, annular autoconverter, voltage stabilizing output module, described sample circuit module connects regulation and control module by V/F conversion module, described clock module, input through keyboard module are connected on the corresponding port of regulation and control module, and described regulation and control module connects voltage stabilizing output module by servomotor, annular autoconverter successively;
Wherein, infrared light emission module, sends a timing enabling signal to timing unit for launching infrared light simultaneously;
Infrared light receiver module, for sending a timing stop signal to timing unit when receiving infrared light for the first time simultaneously;
Temperature-measuring module, for Real-time Collection environment temperature;
Timing unit, is receiving the time between the timing enabling signal of infrared light emission module transmission and the timing stop signal of infrared light receiver module transmission for calculating, and then the time will be uploaded to micro controller module;
Micro controller module, for distance of the discharging of the coke according to the time combining environmental temperature computation of the infrared light velocity and reception, is focused by analyzing and processing control CPLD module drive stepper motor;
Display module, for showing microscope focus in real time.
As the further preferred version of a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug of the present invention, described micro controller module adopts AVR series monolithic.
As the further preferred version of a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug of the present invention, described display module is LCD display.
As the further preferred version of a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug of the present invention, described temperature-measuring module adopts DS18B20 temperature sensing.
As the further preferred version of a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug of the present invention, the chip model of described stepper motor is 86BYG.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, structure of the present invention simple, there is low cost, high precision, the feature of microminiaturized numerical monitor;
2, invention increases temperature sensor temperature measurer, it has low cost, high precision, and can effectively avoid reducing the impact of temperature variation on distance accuracy, improve the measuring accuracy of infrared light range measurement system effectively, improve the measuring accuracy of infrared light range measurement system effectively.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, based on an infrared light Automatic focusing microscope for alternating current steady voltage plug, comprise micro controller module, infrared transmission module, infrared light receiver module, temperature-measuring module, display module, CPLD module, stepper motor, timing unit and alternating current steady voltage plug; Described infrared transmission module, infrared light receiver module, temperature-measuring module, display module, timing unit are connected on the corresponding port of micro controller module, and described micro controller module is by CPLD model calling stepper motor;
Described alternating current steady voltage plug comprises sample circuit module, V/F conversion module, regulation and control module, clock module, input through keyboard module, servomotor, annular autoconverter, voltage stabilizing output module, described sample circuit module connects regulation and control module by V/F conversion module, described clock module, input through keyboard module are connected on the corresponding port of regulation and control module, and described regulation and control module connects voltage stabilizing output module by servomotor, annular autoconverter successively;
Wherein, infrared light emission module, sends a timing enabling signal to timing unit for launching infrared light simultaneously;
Infrared light receiver module, for sending a timing stop signal to timing unit when receiving infrared light for the first time simultaneously;
Temperature-measuring module, for Real-time Collection environment temperature;
Timing unit, is receiving the time between the timing enabling signal of infrared light emission module transmission and the timing stop signal of infrared light receiver module transmission for calculating, and then the time will be uploaded to micro controller module;
Micro controller module, for distance of the discharging of the coke according to the time combining environmental temperature computation of the infrared light velocity and reception, is focused by analyzing and processing control CPLD module drive stepper motor;
Display module, for showing microscope focus in real time.
Wherein, described micro controller module adopts AVR series monolithic, and described display module is LCD display, and described temperature-measuring module adopts DS18B20 temperature sensing, and the chip model of described stepper motor is 86BYG.
Infrared light emission circuit is sent by single-chip microcomputer output terminal Direct driver infrared light, and infrared light receiving circuit output terminal is connected with single-chip microcomputer, and the output terminal of single-chip microcomputer is connected with display circuit input end.Single-chip microcomputer, in TO moment transmit square waves, starts timer simultaneously and starts timing, and after receiving echo, generation one is negative jumps to singlechip interruption mouth, and single-chip microcomputer response interrupt routine, timer stops counting.Computing time, difference can obtain the time t that infrared light is propagated in medium, just can calculate distance thus.
The square wave of 40kHz drives infrared light emission hair to penetrate infrared light by AVR single chip, the sine wave of 40kHz is received after reflection by infrared light Receiver, owing to decaying when sound wave is propagated in atmosphere, so the waveforms amplitude received is lower, through receiving circuit amplification, shaping, finally export a negative saltus step, input single-chip microcomputer.Crystal oscillator due to Single Chip Microcomputer (SCM) system is 12M crystal oscillator, so can only produce the square-wave signal that the semiperiod is 12 μ s or 13 μ s, frequency is respectively 41.67kHz and 38.46kHz.Native system has selected the latter when programming.The signal received be added to BG1, BG2 composition two-stage amplifier on amplify.The enlargement factor of every grade of amplifier is 70 times.Amplifying signal obtains the signal after demodulation by detecting circuit.Used herein is IN4148 detector diode, the direct current signal i.e. capacitance voltage between two diodes of output.This receiving circuit structure is simple, and better performances, manufacture difficulty is little.
AVR single chip has prefetched instruction function, namely when an execution instruction, in advance next instruction is got into, and call instruction can be performed within a clock period; Multiple accumulator type, data processing speed is fast; AVR single chip has 32 general purpose working registers, and being equivalent to has 32 viaducts, can fast passing; Response time is fast.AVR single chip has multiple fixing interrupt vector entry address, can respond interruption fast; AVR single chip power consumption is low.For typical power consumption situation, be 100nA when WDT closes, be more suitable for battery powered application apparatus; The minimum 1.8V of some devices gets final product work; AVR single chip security performance is good.
In atmosphere, under normal temperature, the velocity of propagation of infrared light is 334m/s, but its velocity of propagation is by the impact of the factor such as temperature, humidity in air, and wherein temperature influence is comparatively large, and as temperature often raises 1 DEG C, the velocity of sound will increase about 0.6m/s.Therefore in identical interval measurement distance, because the wave propagation time is identical, the velocity of sound under different temperatures is different, so finally cause the distance measured unequal, in the exigent situation of range measurement accuracy, must measure temperature and compensate, to avoid temperature on the impact of measuring accuracy.Native system selects DS18B20 temperature sensor as temperature survey, error-compensating apparatus, and exchanging information with single-chip microcomputer only needs an I/O mouth line, and its power supply can derive from single-chip processor i/o mouth data line, and without the need to additional power supply.Under different temperatures, the temperature variant relation of velocity of propagation is as follows in atmosphere for infrared light: in v=331.4+0.61T formula, and T is actual temperature (DEG C), and v is the velocity of sound under current environment, and unit is m/s.
The present invention relates to a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug.In order to improve the measuring precision and system stability further, hardware adding temperature sensor temperature measurement circuit, improve the measuring accuracy of infrared light range measurement system effectively.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, makes a variety of changes under can also or else departing from the prerequisite of present inventive concept.
Claims (5)
1. based on an infrared light Automatic focusing microscope for alternating current steady voltage plug, it is characterized in that: comprise micro controller module, infrared transmission module, infrared light receiver module, temperature-measuring module, display module, CPLD module, stepper motor, timing unit and alternating current steady voltage plug; Described infrared transmission module, infrared light receiver module, temperature-measuring module, display module, timing unit are connected on the corresponding port of micro controller module, and described micro controller module is by CPLD model calling stepper motor;
Described alternating current steady voltage plug comprises sample circuit module, V/F conversion module, regulation and control module, clock module, input through keyboard module, servomotor, annular autoconverter, voltage stabilizing output module, described sample circuit module connects regulation and control module by V/F conversion module, described clock module, input through keyboard module are connected on the corresponding port of regulation and control module, and described regulation and control module connects voltage stabilizing output module by servomotor, annular autoconverter successively;
Wherein, infrared light emission module, sends a timing enabling signal to timing unit for launching infrared light simultaneously;
Infrared light receiver module, for sending a timing stop signal to timing unit when receiving infrared light for the first time simultaneously;
Temperature-measuring module, for Real-time Collection environment temperature;
Timing unit, is receiving the time between the timing enabling signal of infrared light emission module transmission and the timing stop signal of infrared light receiver module transmission for calculating, and then the time will be uploaded to micro controller module;
Micro controller module, for distance of the discharging of the coke according to the time combining environmental temperature computation of the infrared light velocity and reception, is focused by analyzing and processing control CPLD module drive stepper motor;
Display module, for showing microscope focus in real time.
2. a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug according to claim 1, is characterized in that: described micro controller module adopts AVR series monolithic.
3. a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug according to claim 1, is characterized in that: described display module is LCD display.
4. a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug according to claim 1, is characterized in that: described temperature-measuring module adopts DS18B20 temperature sensing.
5. a kind of infrared light Automatic focusing microscope based on alternating current steady voltage plug according to claim 1, is characterized in that: the chip model of described stepper motor is 86BYG.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510537164.2A CN105353380A (en) | 2015-08-28 | 2015-08-28 | Infrared light automatic focusing microscope on the basis of alternating current stabilized power supply |
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| CN201510537164.2A CN105353380A (en) | 2015-08-28 | 2015-08-28 | Infrared light automatic focusing microscope on the basis of alternating current stabilized power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109596489A (en) * | 2018-11-29 | 2019-04-09 | 海拉（厦门）电气有限公司 | A kind of laser PM2.5 dust sensor of automatic focusing |
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| GB2007058A (en) * | 1977-08-22 | 1979-05-10 | Quentron Optics Pty Ltd | Laser ranging system |
| JPH01195386A (en) * | 1987-11-30 | 1989-08-07 | Gold Star Co Ltd | Real time distance sensor |
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