CN110108675A - Emissivity detection device - Google Patents
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- CN110108675A CN110108675A CN201910378744.XA CN201910378744A CN110108675A CN 110108675 A CN110108675 A CN 110108675A CN 201910378744 A CN201910378744 A CN 201910378744A CN 110108675 A CN110108675 A CN 110108675A
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- 238000005259 measurement Methods 0.000 description 7
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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Abstract
The present invention provides a kind of emissivity detection devices, comprising: article contains platform, for containing examined object；Sensor, for receiving the first radius from examined object to obtain the first radiation signal；Reflecting mirror, reflecting mirror and sensor are symmetricly set on normal two sides determined by examined object surface, and the second radius for will originate at examined object reflexes to examined object, so that examined object reflects third radius；Sensor is also used to: receiving the first radius and third radius to obtain the second radiation signal；Controller, controller are connected with sensor, for determining the emissivity of examined object according to the first radiation signal and the second radiation signal.It is the emissivity that can determine examined object by the first radiation signal of detection and the second radiation signal since reflecting mirror and sensor are symmetricly set on normal two sides determined by examined object surface.
Description
Technical field
The present invention relates to detection control fields, in particular to a kind of emissivity detection device.
Background technique
Generally, it needs to carry out temperature detection to the components in production under industrial detection scene, such as steel rolling process, danger
The temperature detections such as target, fast moving objects, rather than the measurement accuracy of contacting temperature measurement method depends on the accurate calibration of emissivity,
And emissivity by temperature, operation wavelength, measurement angle, the component on object under test surface, surface degree of oxidation and determinand
Therefore body surface is in real time demarcated the emissivity of examined object in face of the influence of many factors such as the reflection of environmental radiation
It carries out accurately determining that the temperature of examined object is very necessary, therefore needs to develop a kind of emissivity detection device and sent out
Penetrate the technical issues of rate calibration is current urgent need to resolve.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
A kind of emissivity detection device that therefore, the present invention intends to propose.
To achieve the above object, the invention proposes a kind of emissivity detection devices, comprising: article contains platform, for containing
Fill examined object；Sensor, for receiving the first radius from examined object to obtain the first radiation signal；Instead
Mirror is penetrated, reflecting mirror and sensor are symmetricly set on normal two sides determined by examined object surface, to be checked for will originate at
The second radius for surveying object reflexes to examined object, so that examined object reflects third radius；Sensor is also
For: the first radius and third radius are received to obtain the second radiation signal；Controller, controller and sensor phase
Connection, for determining the emissivity of examined object according to the first radiation signal and the second radiation signal.
Emissivity detection device proposed by the present invention includes that article contains platform, sensor, reflecting mirror and controller, wherein
Reflecting mirror and sensor are located at article and contain normal two sides determined by the examined object contained in platform, in object to be detected
Body issues the second radius and is transmitted to reflecting mirror, and reflecting mirror reflects third radius according to the second radius, wherein the
Two radius and the direction of propagation of third radius in space are on the contrary, the first radius and the second radius and method
Line angle having the same, sensor detect the first radius and obtain the first radiation signal, detect the first radius and the
Three radius obtain the second radiation signal, have above-mentioned positional relationship since article contains platform, sensor and reflecting mirror, therefore examine
The first radiation signal and the second radiation signal emissivity having the same measured, and then pass through the first radiation signal and second
Radiation signal is the emissivity that can determine examined object, and detection process is simple, can be realized the high frequency time and/or reality of emissivity
When detect.
In addition, emissivity detection device according to the above embodiment of the present invention, can also have following additional technology special
Sign:
In the above-mentioned technical solutions, further, emissivity detection device further include: chopper wheel, chopper wheel are arranged anti-
It penetrates between mirror and examined object；Motor, motor are connected with controller, for receiving control signal to drive chopper wheel to turn
Dynamic, when chopper wheel turns to first position, chopper wheel stops the second radius；When chopper wheel turns to the second position,
Chopper wheel releases the blocking to the second radius, so that the second radius propagates to reflecting mirror.
In the technical scheme, for the ease of distinguishing the first radiation signal and the second radiation signal, by reflecting mirror and
The motor that chopper wheel is arranged between examined object and matches with chopper wheel, wherein motor is connected with controller, receives
Signal is controlled to drive chopper wheel to rotate, when chopper wheel turns to first position, chopper wheel stops the second radius；It is adjusting
When disk processed turns to the second position, chopper wheel releases the blocking to the second radius, so that the second radius propagates to instead
Mirror is penetrated, motor is connected with controller, is convenient for the first radiation signal and the second radiation signal using the work of motor driven chopper wheel
Control, convenient for examined object emissivity high-frequency detection.
In any of the above-described technical solution, further, controller is specifically used for: according to the first radiation signal and the second spoke
Penetrate the reflectivity that signal determines examined object；The emissivity of examined object is determined according to reflectivity.
In the technical scheme, in the case where the specifications parameter of the reflectivity of known reflecting mirror and sensor, according to
One radiation signal and the second radiation signal determine the reflectivity of examined object, and determine object to be detected according to Kirchhoff's law
The emissivity of body.By Kirchhoff's law it is found that the sum of radiative and reflective coefficient is the fixed value for 1, therefore, and then will transmitting
The test problems of rate are converted to the measurement of reflectivity, and the first radius that reflectivity can emit according to examined object is true
The first fixed radiation signal and the third radius under examined object reflection case determine, further, for reality
Existing examined object fixed angle emissivity, by the second radius of reflecting mirror reflection and the first radius and via
The angle between normal that examined object determines is identical.
In any of the above-described technical solution, further, article contains platform and is connected with controller, and article contains platform and also uses
In: temperature adjusting is carried out to examined object according to the temperature parameter received.
In the technical scheme, since emissivity is related to the own temperature of examined object, thus article contain platform according to
The temperature parameter received carries out temperature adjusting to examined object, and then realizes to the emissivity under detection object different temperatures
It is detected, and then realizes the calibration of the emissivity of examined object.
In any of the above-described technical solution, further, controller is also used to: being radiated according to the first radiation signal and second
At least one in signal and emissivity determine the temperature value of examined object.
In the technical scheme, since emissivity is determined according to the first radiation signal and the second radiation signal, and
One radiation signal is the energy of examined object radiation, by any one in the first radiation signal and the second radiation signal and is determined
Emissivity in the temperature value that can determine examined object based on Formula of the blackbody radiation, since temperature value is the hair according to calibration
Penetrate what rate determined, this improves the reliabilities of temperature detection.
In any of the above-described technical solution, further, emissivity detection device further include: optical filter, optical filter setting
Between sensor and examined object, for transmiting the radiant light of specified wavelength in the first radius and third radius
Line.
In the technical scheme, by the way that optical filter is arranged between sensor and examined object, have using optical filter
Transmission specified wavelength radius the characteristics of, to the light of other wavelength in the first radius and third radius
It is filtered out, and then the emissivity measured is emissivity of the examined object under specified wavelength, eliminates the radiation of other wavelength
Influence of the light to emissivity, and then improve the reliability of emissivity calibration.
In any of the above-described technical solution, further, emissivity detection device further include: beam splitter；Light source, for sending out
Light is calibrated out to beam splitter；Beam splitter be arranged between optical filter and examined object, for the quasi-optical line reflection of high-ranking officers to
Detection object, so that examined object reflection calibrates light to reflecting mirror；Transmission is reflected via reflecting mirror and examined object
Light is calibrated to sensor.
In the technical scheme, emissivity detection device further include: beam splitter and light source, wherein beam splitter setting are filtering
Between piece and examined object, light source, for issuing calibration light to beam splitter, wherein the quasi-optical line reflection of beam splitter high-ranking officers to
Detection object, so that the calibration light retrodirective reflection that examined object reflection calibration light will be received to reflecting mirror, reflecting mirror
To beam splitter, sensor, and then the calibration of realization device optical path are transmitted and are transmitted to by beam splitter.
In any of the above-described technical solution, further, emissivity detection device further include: object lens are arranged to be detected
Between object and sensor, for being converged to the first radius and third radius.
In the technical scheme, by the way that object lens are arranged between examined object and sensor, examined object is issued
The first radius and third radius converged, the light intensity that receives of enhancing sensor avoids because to be checked
Survey object issue the first radius and third radius intensity it is too low, caused by sensor can not perceive.
In any of the above-described technical solution, further, emissivity detection device further include: relay lens, relay lens
It is arranged between object lens and sensor, for the first radius and third radius to be imaged on a sensor.
In the technical scheme, by the way that relay lens is arranged between object lens and sensor, it will transmit through the first spoke of object lens
Light and the imaging of third radius are penetrated on a sensor, so that sensor acquires the first radiation signal and the second radiation letter
Number, further, the real image position of object lens is arranged in relay lens, to ensure that the first radius and third radius can
It fully enters in sensor, and then ensures the confidence level of emissivity.
In any of the above-described technical solution, further, emissivity detection device further include: input unit, input unit
It is connected with controller, is used for input control signal, so that motor is rotated according to control signal driving chopper wheel；Input unit is also
For: input temp parameter, so that article, which contains platform, carries out temperature adjusting to examined object according to temperature parameter.
In the technical scheme, emissivity detection device is equipped with input unit, is contained using input unit to motor and article
It fills platform and carries out state modulator, and then realize controllable temperature detection.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the structural schematic diagram of emissivity detection device according to an embodiment of the invention；
Fig. 2 shows the position views of the reflecting mirror of one embodiment of the present of invention and sensor；
Fig. 3 shows the position view that the first radius is received in one embodiment of the present of invention；
Fig. 4 shows the position view that third radius is received in one embodiment of the present of invention；
Fig. 5 shows the schematic illustration of emissivity detection device in one embodiment of the present of invention；
Fig. 6 shows the structural schematic diagram of the emissivity detection device of one embodiment according to the present invention.
Wherein, the corresponding relationship between appended drawing reference and component names of the Fig. 1 into Fig. 6 are as follows:
2 articles contain platform, 4 sensors, 6 reflecting mirrors, 8 controllers, 10 chopper wheels, 12 motors, 14 optical filters, 16 beam splitting
Mirror, 18 light sources, 20 object lens, 22 relay lens, 24 input units, 26 execute controlled cell, 28 analog to digital conversion circuits, and 30 frequency-selectings are put
Big circuit.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not limited to following public affairs
The limitation for the specific embodiment opened.
The invention proposes a kind of emissivity detection devices, and as shown in Figures 1 to 4, emissivity detection device includes: article
Platform 2 is contained, for containing examined object；Sensor 4, for receiving the first radius from examined object to obtain
First radiation signal；Reflecting mirror 6, reflecting mirror 6 and sensor 4 are symmetricly set on normal two determined by examined object surface
Side, the second radius for will originate at examined object reflex to examined object, so that examined object reflects third
Radius；Sensor 4 is also used to: receiving the first radius and third radius to obtain the second radiation signal；Control
Device 8, controller 8 are connected with sensor 4, for determining examined object according to the first radiation signal and the second radiation signal
Emissivity.
Emissivity detection device proposed by the present invention includes that article contains platform 2, sensor 4, reflecting mirror 6 and controller 8,
In, as shown in Fig. 2, reflecting mirror 6 and sensor 4, which are located at article, contains method determined by the examined object contained in platform 2
Line two sides issue the second radius in examined object and are transmitted to reflecting mirror 6, and reflecting mirror 6 is reflected according to the second radius
Third radius, wherein the second radius and the direction of propagation of third radius in space are on the contrary, the first radiant light
Line and the second radius and normal angle having the same, as shown in figure 3, sensor 4, which detects the first radius, obtains the
One radiation signal detects the first radius and third radius obtains the second radiation signal as shown in Figure 3 and Figure 4, due to
Article, which contains platform 2, sensor 4 and reflecting mirror 6, has above-mentioned positional relationship, therefore detects obtained the first radiation signal and the second spoke
Signal emissivity having the same is penetrated, and then examined object can determine by the first radiation signal and the second radiation signal
Emissivity, detection process is simple, can be realized the high frequency time and/or real-time detection of emissivity.
In one embodiment of the invention, as shown in Figure 1, emissivity detection device further include: chopper wheel 10, chopper wheel
10 are arranged between reflecting mirror 6 and examined object；Motor 12, motor 12 are connected with controller 8, for receiving control signal
To drive chopper wheel 10 to rotate, when chopper wheel 10 turns to first position, chopper wheel 10 stops the second radius；It is modulating
When disk 10 turns to the second position, chopper wheel 10 releases the blocking to the second radius, so that the second radius propagates to
Reflecting mirror 6.
In this embodiment, for the ease of distinguishing the first radiation signal and the second radiation signal, by reflecting mirror 6 and to
The motor 12 that chopper wheel 10 is arranged between detection object and matches with chopper wheel 10, wherein motor 12 is connected with controller 8
It connects, receives control signal to drive chopper wheel 10 to rotate, when chopper wheel 10 turns to first position, chopper wheel 10 stops second
Radius；When chopper wheel 10 turns to the second position, chopper wheel 10 releases the blocking to the second radius, so that second
Radius propagates to reflecting mirror 6, and motor 12 is connected with controller 8, drives the work of chopper wheel 10 convenient for the using motor 12
The control of one radiation signal and the second radiation signal, convenient for the high-frequency detection of the emissivity of examined object.
In one embodiment of the invention, controller 8 is specifically used for: according to the first radiation signal and the second radiation signal
Determine the reflectivity of examined object；The emissivity of examined object is determined according to reflectivity.
In this embodiment, in the case where the specifications parameter of the reflectivity of known reflecting mirror 6 and sensor 4, according to
One radiation signal and the second radiation signal determine the reflectivity of examined object, and determine object to be detected according to Kirchhoff's law
The emissivity of body.By Kirchhoff's law it is found that the sum of radiative and reflective coefficient is the fixed value for 1, therefore, and then will transmitting
The test problems of rate are converted to the measurement of reflectivity, and the first radius that reflectivity can emit according to examined object is true
The first fixed radiation signal and the third radius under examined object reflection case determine, further, for reality
Show examined object in the emissivity of fixed angle, the second radius and the first radius that reflecting mirror 6 is reflected and warp
The normal angle determined by examined object is identical.
In one embodiment of the invention, as shown in Figure 1, article splendid attire platform 2 is connected with controller 8, article is contained
Platform 2 is also used to: carrying out temperature adjusting to examined object according to the temperature parameter received.
In this embodiment, since emissivity is related to the own temperature of examined object, therefore article contains platform 2 according to connecing
The temperature parameter received to examined object carry out temperature adjusting, and then realize to the emissivity under detection object different temperatures into
Row detection, and then realize the calibration of the emissivity of examined object.
In one embodiment of the invention, controller 8 is also used to: according in the first radiation signal and the second radiation signal
At least one determines the temperature value of examined object with emissivity.
In this embodiment, since emissivity is determined according to the first radiation signal and the second radiation signal, and first
Radiation signal is the energy of examined object radiation, by any one in the first radiation signal and the second radiation signal and determination
Emissivity is in the temperature value that can determine examined object based on Formula of the blackbody radiation, since temperature value is the transmitting according to calibration
What rate determined, this improves the reliabilities of temperature detection.
In one embodiment of the invention, as shown in figure 5, emissivity detection device further include: optical filter 14, optical filter
14 are arranged between sensor 4 and examined object, for transmiting specified wavelength in the first radius and third radius
Radius.
In this embodiment, by the way that optical filter 14 is arranged between sensor 4 and examined object, have using optical filter 14
Some transmits the characteristics of radius of specified wavelength, to the light of other wavelength in the first radius and third radius
Line is filtered out, and then the emissivity measured is emissivity of the examined object under specified wavelength, eliminates the spoke of other wavelength
Influence of the light to emissivity is penetrated, and then improves the reliability of emissivity calibration.
In one embodiment of the invention, as shown in figure 5, emissivity detection device further include: beam splitter 16；Light source
18, for issuing calibration light to beam splitter 16；Beam splitter 16 is arranged between optical filter 14 and examined object, is used for high-ranking officers
Quasi-optical line reflection is to examined object, so that examined object reflection calibrates light to reflecting mirror 6；Transmission is via 6 He of reflecting mirror
The calibration light of examined object reflection is to sensor 4.
In this embodiment, emissivity detection device further include: beam splitter 16 and light source 18, the wherein setting of beam splitter 16 exist
Between optical filter 14 and examined object, light source 18, for issuing calibration light to beam splitter 16, wherein beam splitter 16 will be calibrated
Light reflexes to examined object, so that the school that examined object reflection calibration light will be received to reflecting mirror 6, reflecting mirror 6
Quasi-optical line retrodirective reflection transmits by beam splitter 16 to beam splitter 16 and is transmitted to sensor 4, and then the school of realization device optical path
Standard, wherein light source 18 is laser.
In one embodiment of the invention, as shown in figure 5, emissivity detection device further include: object lens 20, setting to
Between detection object and sensor 4, for being converged to the first radius and third radius.
In this embodiment, by the way that object lens 20 are arranged between examined object and sensor 4, examined object is issued
The first radius and third radius converged, the light intensity that receives of enhancing sensor 4 avoids because to be checked
Survey object issue the first radius and third radius intensity it is too low, caused by sensor 4 can not perceive.
In one embodiment of the invention, as shown in figure 5, emissivity detection device further include: relay lens 22, relaying
Lens 22 are arranged between object lens 20 and sensor 4, for the first radius and third radius to be imaged on sensor 4
On.
In this embodiment, by the way that relay lens 22 is arranged between object lens 20 and sensor 4, it will transmit through the of object lens 20
One radius and third radius are imaged on sensor 4, so that sensor 4 acquires the first radiation signal and second
The real image position of object lens 20 is arranged in radiation signal, further, relay lens 22, to ensure the first radius and third spoke
Penetrating light can fully enter in sensor 4, and then ensure the confidence level of emissivity.
In one embodiment of the invention, as shown in figure 5, emissivity detection device further include: input unit 24, input
Device 24 is connected with controller 8, is used for input control signal, so that motor 12 drives 10 turns of chopper wheel according to control signal
It is dynamic；Input unit 24 is also used to: input temp parameter, is carried out according to temperature parameter to examined object so that article contains platform 2
Temperature is adjusted.
In this embodiment, emissivity detection device is equipped with input unit 24, using input unit 24 to motor 12 and object
Product contain platform 2 and carry out state modulator, and then realize controllable temperature detection.
In one embodiment of the invention, as shown in figure 3, in the case that chopper wheel 10 blocks the second radius,
I.e. sensor 4 can only receive the first radius, obtain the first radiation signal P1,
Wherein, D is pupil bore；F ' is the focal length of optical receiving system；τ0For the propagation coefficient of atmosphere；A is detector
Sensitive elemental area；ελFor temperature be T object under test af at wavelength lambda emissivity；LλFor temperature be T black matrix in af at wavelength lambda
Radiant exitance；τλFor the total transmitance for the light that optical system is λ to wavelength.
In the case that chopper wheel 10 does not block the second radius, the second radius that examined object issues is transmitted
To reflecting mirror 6, third radius is reflected via reflecting mirror 6, wherein the radiation energy for being back to examined object is
P′1=γ1ελLλ；
Wherein, γ1For the effective reflectivity of reflecting mirror 6, as shown in figure 4, sensor 4 can receive the first radius and
Three radius obtain the second radiation signal P2,
Wherein, γ2For the effective reflectivity on object under test surface；η is the index of modulation of chopper wheel 10；β is object under test
The optical correction coefficient of surface specular reflections characteristic, from gill hoff's law:
γ2=1- ελ；
In extremely narrow wave band for same tested surface, it is believed that β is a constant；Simultaneously it is also assumed that ελ
And τλIt is unrelated with wavelength, therefore can export:
ελ=1- (P2/P1-1)/γ1β；
In the every rotation of chopper wheel 10 one week, the detection of sensor 4 reached a P1And P2, obtain the detection knot an of emissivity
Fruit.
Utilize Formula of the blackbody radiation Lλ=2 π hc2λ-5[exp(hc/λkT)-1]-1With P1And P2In any one detection knot
The current temperature value of examined object can be calculated in fruit,
Wherein, h is Planck constant；K is Boltzmann constant 1；C is the light velocity.
As shown in fig. 6, the continuous heat radiation of object under test, all the way by lens focus after the optical filtering of spike interference filter 14
Onto sensor 4；The modulated disk 10 of another way be modulated into pulsed light, reflecting mirror 6 along former road be reflected back tested surface after, again by be measured
Face reflection, spike interference filter 14 enter sensor 4 (photoelectric sensor 4, such as infrared sensor 4) after filtering, by sensing
Photo-translating system is transformed into electric signal in device 4.The every rotation of chopper wheel 10 one week, photodetector be received by two it is different
(signal is the first radiation signal P to electric signal1, another signal is the second radiation signal P2).The two electric signals pass through respectively
Necessary data are carried out again after selective frequency amplifier circuit 30 (preposition amplification and frequency-selecting amplification) and 28 analog-to-digital conversion of analog to digital conversion circuit
Processing, can be obtained at a certain wavelength points, under a certain measurement angle object under test emissivity and temperature information.
Specifically, the technical indicator of emissivity detection device is as follows:
Range: 0.1-0.99
Emissivity measurement error: ± 10%
Temperature measurement range: 400-1100 DEG C
Thermometric error: 0.2%
Calandria temperature control precision: ± 2 DEG C
Further, when examined object, which contains platform 2 by article, is heated to a certain temperature, the electricity of chopper wheel 10 is driven
Machine 12 starts immediately, and the optical signal that reflecting mirror 6 reflects then is modulated by chopper wheel 10.Optical receiving system (including sensor 4, tune
Disk 10 and motor 12 processed) respectively acquisition object under test at such a temperature reflecting mirror 6 work when not working with reflecting mirror 6 the
One radiation signal P1With the second radiation signal P2.After this two paths of signals is transferred to controller 8 to handle by system, object can be calculated
Emissivity and temperature at such a temperature.
Wherein, a certain temperature after input unit 24 (including touch screen, keyboard and display) input temp parameter by leading to
Cross execution controlled cell 26 (as driving article to contain the circuit that platform 2 carries out computer heating control to examined object) control article
Platform 2 is contained to heat examined object.
Object under test (especially those emissivity are measured under determining wavelength using the emissivity detection device developed
Vary with temperature biggish object) emissivity with temperature etc. variation relation；Reuse replacement spike interference filter 14
Method changes the operation wavelength of instrument, and then studies the emissivity of object under test at different wavelengths with the variation of its temperature etc.
Behavior finds emissivity with the changing rule of temperature etc..
This emissivity detection device (temperature measurer) solves the problems, such as emissivity accurate calibration, realize temperature it is real-time,
Accurate measurement.Only instrument need to slightly be improved (as increased water cooling plant to eliminate the high ambient temperature under industrial environment to thermometric essence
The influence of degree increases the size of reflecting mirror 6 to increase intensity of reflection signal etc.), it can be used in industry spot.Due to its letter
Single structure and lower production cost, make it have biggish market potential, have strict demand simultaneously for temperature measurement
Production line, which can greatly improve temperature measurement accuracy.To reduction in the numbers of seconds, improve product quality and labor efficiency all very
It is significant.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of emissivity detection device characterized by comprising
Article contains platform, for containing examined object；
Sensor, for receiving the first radius from the examined object to obtain the first radiation signal；
Reflecting mirror, the reflecting mirror and the sensor are symmetricly set on normal two determined by the examined object surface
Side, the second radius for will originate at the examined object reflexes to the examined object, so that described to be detected
Object reflects third radius；
The sensor is also used to: receiving first radius and the third radius to obtain the second radiation letter
Number；
Controller, the controller are connected with the sensor, for according to first radiation signal and second spoke
Penetrate the emissivity that signal determines the examined object.
2. emissivity detection device according to claim 1, which is characterized in that further include:
Chopper wheel, the chopper wheel are arranged between the reflecting mirror and the examined object；
Motor, the motor are connected with the controller, for receiving control signal to drive the chopper wheel to rotate, in institute
When stating chopper wheel and turning to first position, the chopper wheel stops second radius；Is turned in the chopper wheel
When two positions, the chopper wheel releases the blocking to second radius, so that second radius propagates to institute
State reflecting mirror.
3. emissivity detection device according to claim 1, which is characterized in that the controller is specifically used for:
The reflectivity of the examined object is determined according to first radiation signal and the second radiation signal；
The emissivity of the examined object is determined according to the reflectivity.
4. emissivity detection device according to claim 2, which is characterized in that the article contains platform and the controller
It is connected, the article contains platform and is also used to: temperature adjusting is carried out to the examined object according to the temperature parameter received.
5. emissivity detection device according to any one of claim 1 to 3, which is characterized in that the controller is also used
In:
It is determined according at least one in first radiation signal and second radiation signal and the emissivity described to be checked
Survey the temperature value of object.
6. emissivity detection device according to claim 1, which is characterized in that further include:
Optical filter, the optical filter is arranged between the sensor and the examined object, for transmiting first spoke
Penetrate the radius of specified wavelength in light and third radius.
7. emissivity detection device according to claim 6, which is characterized in that further include:
Beam splitter；
Light source, for issuing calibration light to the beam splitter；
The beam splitter is arranged between the optical filter and the examined object, for the calibration light to be reflexed to institute
Examined object is stated, so that the examined object reflects the calibration light to the reflecting mirror；
The calibration light that transmission is reflected via the reflecting mirror and the examined object is to the sensor.
8. emissivity detection device according to claim 7, which is characterized in that further include:
Object lens are arranged between the examined object and the sensor, for first radius and described the
Three radius are converged.
9. emissivity detection device according to claim 8, which is characterized in that further include:
Relay lens, the relay lens are arranged between the object lens and the sensor, are used for first radiant light
Line and the third radius are imaged on the sensor.
10. emissivity detection device according to claim 4, which is characterized in that further include:
Input unit, the input unit are connected with the controller, for inputting the control signal, so that the motor
The chopper wheel rotation is driven according to the control signal；
The input unit is also used to: the temperature parameter is inputted, so that the article contains platform according to the temperature parameter pair
The examined object carries out temperature adjusting.
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| CN201910378744.XA CN110108675A (en) | 2019-05-08 | 2019-05-08 | Emissivity detection device |
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| CN201910378744.XA CN110108675A (en) | 2019-05-08 | 2019-05-08 | Emissivity detection device |
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Family
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Application publication date: 20190809 |