CN106092918A - A kind of miniature UV, visible light/Infrared Non-destructive Testing spectrogrph - Google Patents
A kind of miniature UV, visible light/Infrared Non-destructive Testing spectrogrph Download PDFInfo
- Publication number
- CN106092918A CN106092918A CN201610387106.0A CN201610387106A CN106092918A CN 106092918 A CN106092918 A CN 106092918A CN 201610387106 A CN201610387106 A CN 201610387106A CN 106092918 A CN106092918 A CN 106092918A
- Authority
- CN
- China
- Prior art keywords
- circuit
- light
- light source
- visible
- spectrogrph
- 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
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1738—Optionally different kinds of measurements; Method being valid for different kinds of measurement
- G01N2021/1742—Optionally different kinds of measurements; Method being valid for different kinds of measurement either absorption or reflection
Abstract
The invention discloses a kind of miniature UV, visible light/Infrared Non-destructive Testing spectrogrph, it includes light source, photoelectric sensor, Circuits System, shell and power supply.Light source includes pin, base, aluminium base, one chip microcomputer circuit, LED array, light conductor and light conducting cylinder；Photoelectric sensor is UV, visible light/infrasil photodiode；Circuits System includes the amplification of single chip machine controlling circuit, power amplifier, signal and filter circuit and data transmission circuit；Shell is with light source slot, outlet, communication socket and the cylinder of sealing coat；Power supply is DC source.Miniature UV, visible light/Infrared Non-destructive Testing the spectrogrph of the present invention may be used for measuring the UV, visible light/infrared transmission of one or more specific objective materials or reflection absorption spectrum, its machine volume is little, lightweight, with low cost, be suitable for Site Detection, it is easy to promote, spectral resolution is ideal, and anti-interference and the stability of system are preferable.
Description
Technical field
The invention belongs to optical instrument field, be specifically related to a kind of miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph and
Purposes, particularly relates to by light source, photoelectric sensor, Circuits System, shell and electric power generating composition, a kind of or many for Non-Destructive Testing
Plant the device of specific objective material ultraviolet-visible/infrared spectrum.
Background technology
Spectral detection be one by measuring the target substance transmission light in ultraviolet-visible light district and infrared light district or reflection
The intensity of light carries out the emerging detection technique of qualitative or quantitative analysis.Spectrogrph based on this technical research can apply to
Food and the field such as environment measuring, quantitative, the electromagnetic radiation analysis of chemical composition.Traditional spectrogrph by numerous optics, electricity with
Mechanical system forms, and the structure of instrument is extremely complex, and integrated cost is higher, and global reliability is poor, working environment and daily dimension
The condition protecting requirement is harsher, limits it and is widely applied.In order to meet testing agency and general population daily, real-time,
The actual demand of (on-the-spot) spectral measurement online, we be badly in need of exploitation a kind of with low cost, volume is little, lightweight, it is simple to carry
Micro spectrometer.
At present, the micro spectrometer of main flow is with U.S.'s marine optics, U.S.'s Agilent, Holland Ai Wantisi, Japan shore pine
It is representative Deng the product of company, is mostly based on Cheney-Tener light path, flat filed concave grating light path or Michelson's interferometer, adopts
Spectrum, data are received with charge-coupled image sensor (CCD) or cmos image sensor (CMOS)
Shown to computer by built-in industrial control machine or USB/ Bluetooth transmission.Due to microelectromechanical systems (MEMS) technology with fine add
The fast development of work technology, above-mentioned micro spectrometer can accomplish hand size, and its compact conformation is portable, easy to use, it is fast to measure
Speed, price can drop to about ten thousand yuan, is therefore particularly suitable for on-the-spot the most quickly detection.
In recent years, along with the development of 3G/4G development of Mobile Internet technology, the shooting of CMOS camera circuit is carried with smart mobile phone
Visible light, with mobile phone A PP analyze institute survey data, using mobile phone screen as show peripheral hardware mobile phone spectrogrph at micro spectral
Instrument field shows bigger advantage.Mobile phone spectrogrph only need to design bare engine module, is fitted to each other with mobile phone and can realize spectrum
Detection, therefore compares with specialty micro spectrometer and has more preferable portability；Owing to it is without special circuit and special showing
Show peripheral hardware, therefore its cost the cheapest (about 3000 yuan can be down to)；Pass through mobile Internet, it is possible to achieve count more efficiently
Shared according to uploading, thus it is more prone to popularization and application.
Relative to traditional spectrogrph, above-mentioned micro spectrometer has very at aspects such as portability, cost and data transmission
Big advantage.But, current micro spectrometer technology there is also a lot of weak points, mainly has:
First, spectral resolution is undesirable.In the optical path, the diverging light that polychromatic light light source sends, through plane transmission grating
Light after diffraction is difficult in short distance inner focusing imaging, and therefore spectra overlapping is serious, and spectral resolution is undesirable.
Second, light path is complicated, anti-interference is poor.For realizing light splitting, whole micro spectral instrument system have employed the light of complexity
Line structure.Partial optical element in light splitting optical path is such as: reflective micro-mirrors etc. are especially sensitive to ambient temperature, cause spectrometer system
Stability and veracity change with ambient temperature, use complicated temperature control system that these elements are carried out temperature control, meeting
The complexity of increase system, improves cost.Meanwhile, complex optical path systems for optical position of components requires higher, is once shaken
Optical element is caused to misplace etc. physical factor impact, it may appear that bigger measurement error.For mobile phone spectrogrph,
If its light channel structure and cellphone body itself are fixed into an entirety, then its complete machine cost is difficult to reduce；If by its light
Learn structure and make dismountable module, then cannot avoid the measurement error caused due to each installation site deviation.
3rd, cost is of a relatively high.Owing to the cost of complex optical path and CCD system is of a relatively high, current micro spectral
Instrument cost is still difficult to reach the degree that ordinary consumer accepts.As a example by food inspection, present society is for the day of food safety
The raising day by day that benefit is paid close attention to and food quality is required by consumer so that before domestic detection spectrogrph is provided with great market
Scape, but micro spectrometer is the most up to ten thousand at present, and the most thousands of costs limits its answering in domestic field of detection of food safety
With.
The present invention provides a kind of miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph, and it uses LED array as light source
Luminous component, controlled the sequence of light of different wave length LED in LED array by one chip microcomputer, based on transmission light or
Reflection light, by photoelectric sensor collect signal, the control of whole spectrogrph, power supply, signal processing and data-transformation facility by
Circuits System realizes.Miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph the volume of the present invention is little, lightweight, low cost, behaviour
Make simple, be easy to carry, be suitable for Site Detection, the detection demand of professional and technical personnel and general population can be met simultaneously,
There is wide market prospect and social value.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of miniature ultraviolet-visible/Infrared Non-destructive Testing
Spectrogrph.
Second object of the present invention is to provide the purposes of a kind of miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph.
The purpose of the present invention is achieved through the following technical solutions:
The miniature ultraviolet-visible of the one/Infrared Non-destructive Testing spectrogrph of the present invention (includes reflective and transmission-type two kind
Type), it is characterized in that including light source, photoelectric sensor, Circuits System, shell and power supply.
Described light source, is characterized in that including pin, base, aluminium base, one chip microcomputer circuit, LED array, light conductor
And light conducting cylinder.Described pin, it is characterized in that including two-way power voltage supply pin, publicly pin, data transmission pin and with
Walking clock pins, two-way power voltage supply pin powers to respectively one chip microcomputer circuit and LED array, and data transmission pin performs
I2C communication between one chip microcomputer circuit and single chip machine controlling circuit.Described one chip microcomputer circuit, is characterized in that including
One chip microcomputer, 0402 encapsulation Chip-R and electric capacity, for the control of LED array sequence of light.Described LED array, its
Feature is to include one or more LED, and described LED can be Single wavelength LED or multi-wavelength LED lamp, and wavelength is at purple
In outward-visible spectrum and infrared range of spectrum.
Described photoelectric sensor, is characterized in that ultraviolet-visible/infrasil photodiode, and its spectrum acquisition scope is relatively
Width, can read the intensity of ultraviolet-visible/infrared light.
Described Circuits System, is characterized in that including that single chip machine controlling circuit, power amplifier, signal amplify and filter circuit
And data transmission circuit.Wherein, the core parts of single chip machine controlling circuit are nRF51822 singlechip chips, it is characterized in that bag
Include general purpose I/O Interface (GPIO), I2C communication interface, analog-digital converter (ADC), bluetooth module.Single chip machine controlling circuit leads to
Cross GPIO controlling power amplifier is light source of short duration power supply of a length of 20s when carrying out, and controls the miniature of light source by I2C communication interface
Single chip circuit and the sequence of light of LED array, by ADC read voltage signal, and be converted into absorbance or reflectance
Data, carry out wireless data transmission by bluetooth module.The core parts of power amplifier are paster power amplification audions, mainly
For light source power supply.Signal amplifies and filter circuit includes using the signal amplification circuit of integrated operational amplifier structure, low pass filtered
Wave circuit and 50Hz trap circuit, the voltage signal recorded mainly for the treatment of photoelectric sensor.Wherein, signal amplification circuit pair
The small-signal that photoelectric sensor records is amplified, and low-pass filter circuit filters the High-frequency Interference of doping in signal, and 50Hz falls into
Wave circuit is for filtering the Hz noise in signal.Data transmission circuit uses USB communication or serial communication, can pass through data wire
Upload surveyed data.
Described shell, is characterized in that with light source slot, outlet, communication socket and the cylinder of sealing coat.Light
Source slot is for light source power supply, and outlet has duplex feeding positive pole and public negative pole, for ultraviolet-visible/infrared nothing
Damaging detection spectrogrph to power, data transmission socket is for transmitting measured absorbance or reflectivity data, and sealing coat is mainly used
Shield the external environment condition electromagnetic interference to Circuits System.
Described power supply is DC source, can be specifically lithium battery, silver oxide cell or alkaline manganese battery.
It is special that the miniature ultraviolet-visible of the one/Infrared Non-destructive Testing spectrogrph of the present invention may be used for measuring one or more
Set the goal the ultraviolet-visible/infrared transmission of material or reflection absorption spectrum, and then is applied to chemical industry, water quality, food, geology, oil
The fields such as paint, coating, metal, space flight, automobile and historical relic.
The miniature ultraviolet-visible of one of the present invention/Infrared Non-destructive Testing spectrogrph uses Micrometer-Nanometer Processing Technology, and light source is not with
The polychromatic light light source of the LED array replacement conventional spectrometers of the LED composition of co-wavelength and complicated light splitting optical path, employing ultraviolet-
Visible/infrasil photodiode replaces CCD photosensor arrays.Spectrogrph machine volume is little, lightweight, with low cost,
It is suitable for Site Detection, it is simple to promote.The present invention, based on spectrum detection technique, utilizes the measured matter surface monochrome to different wave length
The absorbance of light or the difference of reflectance judge the kind of material, and light source controls in LED array not by one chip microcomputer
The LED of co-wavelength is the most luminous, and when measuring, photoelectric sensor reading is specific wavelength monochromatic light exposure measured object table every time
, there is not spectra overlapping phenomenon, therefore spectral resolution be ideal in face produced reflection light or transmission light.Simultaneously as do not have
There is the light splitting optical path that design is complicated, therefore the anti-interference of system and stability are preferable.
Accompanying drawing explanation
Fig. 1 is the knot of the miniature ultraviolet-visible of the reflective multi-wavelength/Infrared Non-destructive Testing spectrogrph of the embodiment of the present invention 1
Structure schematic diagram.
Fig. 2 is the knot of the miniature ultraviolet-visible of the transmission-type multi-wavelength/Infrared Non-destructive Testing spectrogrph of the embodiment of the present invention 3
Structure schematic diagram.
Fig. 3 is the functional structure signal of the miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph of embodiment of the present invention 1-3
Figure.
Fig. 4 is the workflow diagram of the miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph of embodiment of the present invention 1-3.
Fig. 5 is that the structure of the light source of the miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph of embodiment of the present invention 1-3 is shown
It is intended to.
Fig. 6 is the profile of the LED array of the miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph of embodiment of the present invention 1-3
Schematic diagram.
Fig. 7 is the light source socket signal of the miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph of embodiment of the present invention 1-3
Figure.
Fig. 8 is the miniature ultraviolet-visible of the reflective multi-wavelength/Infrared Non-destructive Testing spectrophotometer of the embodiment of the present invention 1
The reflection-absorption curve of omethoate.
Fig. 9 is the miniature ultraviolet-visible of the transmission-type multi-wavelength/Infrared Non-destructive Testing spectrophotometer of the embodiment of the present invention 3
Longevity all mineral spring edible natural water and the absorption curve of tap water.
Reference: 1 shell 2 detects mouth 3 light source 4 photoelectric sensor 5 signal and amplifies and filter circuit 6 single-chip microcomputer
Control circuit 7 data transmission circuit 8 power amplifier 9 power supply
Detailed description of the invention
Below by embodiment, the invention will be further described, and its purpose is only that and is better understood from present disclosure
Rather than limit the scope of the invention:
The miniature ultraviolet-visible of the reflective multi-wavelength of embodiment 1/Infrared Non-destructive Testing spectrogrph
Light source 3, photoelectric sensor 4, Circuits System and the electricity of a kind of miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph
Source 9 is installed in shell 1 (see Fig. 1,3-4).Light source 3, irradiation central point and photoelectric sensor 4 are in the same plane, light
The angle gone out between light light path, the detection path of photoelectric sensor 4 and the normal of irradiation central point in source 3 is equal, it is ensured that reflection
Light enters photoelectric sensor 4 to greatest extent.
Light source 3 includes that pin, base, aluminium base, one chip microcomputer circuit, LED array, light conductor and light conducting cylinder are (see figure
5).Pin includes two-way power voltage supply pin, publicly pin, data transmission pin and synchronised clock pin, and two-way voltage supplies
Fulgurite foot powers to respectively one chip microcomputer circuit and LED array, and data transmission pin performs one chip microcomputer circuit and monolithic
I2C communication between machine control circuit 6.Pin is connected on the left side of base, is inserted in ultraviolet-visible/Infrared Non-destructive Testing
In the special pedestal of spectrogrph, power voltage supply pin and data transfer tube foot are connected to one by solder joint by base and aluminium base
Rise.One chip microcomputer circuit includes one chip microcomputer, 0402 encapsulation Chip-R and electric capacity, and they are all welded on aluminium base,
Control for LED array sequence of light.LED array includes 49 multi-wavelength LED lamps (see Fig. 6), and wavelength is all at ultraviolet-visible
In spectrum and infrared range of spectrum, 0402 encapsulation Chip-R and the LED array that its supply voltage is drawn by one chip microcomputer
The bleeder circuit constituted regulates.One chip microcomputer system model is the STM8S003 single-chip microcomputer of UFQFPN20 encapsulation, and its size is only
It is 3 × 3mm2, cost is relatively low.The end of light conductor is convex surface, has light-focusing function, and light sends and be radiated at detected through light conductor
Thing surface.The inner surface of light conducting cylinder is minute surface, is used for fixing light conductor and aluminium base, also can play optically focused effect.
Photoelectric sensor 4 is ultraviolet-visible/infrasil photodiode, and its spectrum acquisition wider range can read purple
The intensity of outward-visible/infrared light.
Circuits System includes the amplification of single chip machine controlling circuit 6, power amplifier 8, signal and filter circuit 5 and data transmission
Circuit 7.Wherein, the core parts of single chip machine controlling circuit 6 are nRF51822 singlechip chips, including general purpose I/O Interface
(GPIO), I2C communication interface, analog-digital converter (ADC), bluetooth communication module.Single chip machine controlling circuit 6 is controlled by GPIO
Power amplifier 8 processed is light source 3 of short duration power supply of a length of 20s when carrying out, and is controlled the minitype single-chip of light source 3 by I2C communication interface
Dynamo-electric road and the sequence of light of LED array, by ADC read voltage signal, and be converted into reflectivity data, pass through bluetooth
Module carries out wireless data transmission.The core parts of power amplifier 8 are that paster power amplification audion, predominantly light source 3 are powered.
Signal amplify and filter circuit 5 include use integrated operational amplifier build signal amplification circuit, low-pass filter circuit and
50Hz trap circuit, the voltage signal recorded mainly for the treatment of photoelectric sensor 4.Wherein, signal amplification circuit is to photoelectric transfer
The small-signal that sensor 4 records is amplified, and low-pass filter circuit filters the High-frequency Interference of doping, 50Hz trap circuit in signal
For filtering the Hz noise in signal.Data transmission circuit 7 uses USB communication, can upload surveyed data by data wire.
Shell 1 is the black cylinder (see Fig. 7) with light source slot, outlet, communication socket and sealing coat.Light source
Slot is for powering to light source 3, and outlet has duplex feeding positive pole and public negative pole, for ultraviolet-visible/infrared nondestructive
Detection spectrogrph is powered, and data transmission socket is for transmitting measured spectroscopic data, and sealing coat is mainly used to shield external rings
The border electromagnetic interference to Circuits System.
Power supply 9 is lithium battery.
Tested substance is placed in the position of detection mouth 2, and the detection light that light source 3 sends irradiates in place in detecting the tested of mouth 2
On material surface, the light intensity after the reflection-absorption of measured matter surface is received by photoelectric sensor 4 and is converted into voltage signal.
Voltage signal amplifies and after filter circuit 5 filtering interfering through signal, by the core parts of single chip machine controlling circuit 6
The ADC of nRF51822 singlechip chip reads and is converted to measured matter surface reflectivity information.Reflectivity information can be by single
The bluetooth communication module of sheet machine control circuit 6 core parts nRF51822 singlechip chip is to mobile phone uploading detection data.
Described light source 3 is controlled power supply by single chip machine controlling circuit 6 by power amplifier 8.Signal amplifies and filter circuit 5, single-chip microcomputer
Control circuit 6, data transmission circuit 7, power amplifier 8 are all powered by power supply 9.
Embodiment 2 reflective dual wavelength miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph
Light source 3, photoelectric sensor 4, Circuits System and the electricity of a kind of miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph
Source 9 is installed in shell 1 (see Fig. 3-4).Light source 3, irradiation central point and photoelectric sensor 4 are in the same plane, light source 3
Go out light light path, photoelectric sensor 4 detection path and irradiate central point normal between angle equal, it is ensured that reflection light
Enter photoelectric sensor 4 to greatest extent.
Light source 3 includes that pin, base, aluminium base, one chip microcomputer circuit, LED array, light conductor and light conducting cylinder are (see figure
5).Pin includes two-way power voltage supply pin, publicly pin, data transmission pin and synchronised clock pin, and two-way voltage supplies
Fulgurite foot powers to respectively one chip microcomputer circuit and LED array, and data transmission pin performs one chip microcomputer circuit and monolithic
I2C communication between machine control circuit 6.Pin is connected on the left side of base, is inserted in ultraviolet-visible/Infrared Non-destructive Testing
In the special pedestal of spectrogrph, power voltage supply pin and data transfer tube foot are connected to one by solder joint by base and aluminium base
Rise.One chip microcomputer circuit includes one chip microcomputer, 0402 encapsulation Chip-R and electric capacity, and they are all welded on aluminium base,
Control for LED array sequence of light.LED array includes 2 Single wavelength LED (see Fig. 6), and wavelength is all at ultraviolet-visible
In spectrum and infrared range of spectrum, 0402 encapsulation Chip-R and the LED array that its supply voltage is drawn by one chip microcomputer
The bleeder circuit constituted regulates.One chip microcomputer system model is the STM8S003 single-chip microcomputer of UFQFPN20 encapsulation, and its size is only
It is 3 × 3mm2, cost is relatively low.The end of light conductor is convex surface, has light-focusing function, and light sends and be radiated at detected through light conductor
Thing surface.The inner surface of light conducting cylinder is minute surface, is used for fixing light conductor and aluminium base, also can play optically focused effect.
Photoelectric sensor 4 is ultraviolet-visible/infrasil photodiode, and its spectrum acquisition wider range can read purple
The intensity of outward-visible/infrared light.
Circuits System includes the amplification of single chip machine controlling circuit 6, power amplifier 8, signal and filter circuit 5 and data transmission
Circuit 7.Wherein, the core parts of single chip machine controlling circuit 6 are nRF51822 singlechip chips, including general purpose I/O Interface
(GPIO), I2C communication interface, analog-digital converter (ADC), bluetooth communication module.Single chip machine controlling circuit 6 is controlled by GPIO
Power amplifier 8 processed is light source 3 of short duration power supply of a length of 20s when carrying out, and is controlled the minitype single-chip of light source 3 by I2C communication interface
Dynamo-electric road and the sequence of light of LED array, by ADC read voltage signal, and be converted into reflectivity data, pass through bluetooth
Module carries out wireless data transmission.The core parts of power amplifier 8 are that paster power amplification audion, predominantly light source 3 are powered.
Signal amplify and filter circuit 5 include use integrated operational amplifier build signal amplification circuit, low-pass filter circuit and
50Hz trap circuit, the voltage signal recorded mainly for the treatment of photoelectric sensor 4.Wherein, signal amplification circuit is to photoelectric transfer
The small-signal that sensor 4 records is amplified, and low-pass filter circuit filters the High-frequency Interference of doping, 50Hz trap circuit in signal
For filtering the Hz noise in signal.Data transmission circuit 7 uses serial communication, can upload surveyed data by data wire.
Shell 1 is the black cylinder (see Fig. 7) with light source slot, outlet, communication socket and sealing coat.Light source
Slot is for powering to light source 3, and outlet has duplex feeding positive pole and public negative pole, for ultraviolet-visible/infrared nondestructive
Detection spectrogrph is powered, and data transmission socket is for transmitting measured spectroscopic data, and sealing coat is mainly used to shield external rings
The border electromagnetic interference to Circuits System.
Power supply 9 is silver oxide cell.
Tested substance is placed in the position of detection mouth 2, and the detection light that light source 3 sends irradiates in place in detecting the tested of mouth 2
On material surface, the light intensity after the reflection-absorption of measured matter surface is received by photoelectric sensor 4 and is converted into voltage signal.
Voltage signal amplifies and after filter circuit 5 filtering interfering through signal, by the core parts of single chip machine controlling circuit 6
The ADC of nRF51822 singlechip chip reads and is converted to measured matter surface reflectivity information.Reflectivity information can be by number
According to transmission circuit 7 to panel computer uploading detection data.Described light source 3 is controlled by power amplifier 8 by single chip machine controlling circuit 6
System power supply.Signal amplifies and filter circuit 5, single chip machine controlling circuit 6, data transmission circuit 7, power amplifier 8 are all by power supply 9
It is powered.
The miniature ultraviolet-visible of embodiment 3 transmission-type multi-wavelength/Infrared Non-destructive Testing spectrogrph
Light source 3, photoelectric sensor 4, Circuits System and the electricity of a kind of miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph
Source 9 is installed in shell 1 (see Fig. 2-4).Light source 3, irradiation central point and photoelectric sensor 4 are in the same plane, light source 3
Go out light light path, the detection path of photoelectric sensor 4 and irradiate central spot on same straight line, it is ensured that transmitted ray maximum limit
The entrance photoelectric sensor 4 of degree.
Light source 3 includes that pin, base, aluminium base, one chip microcomputer circuit, LED array, light conductor and light conducting cylinder are (see figure
5).Pin includes two-way power voltage supply pin, publicly pin, data transmission pin and synchronised clock pin, and two-way voltage supplies
Fulgurite foot powers to respectively one chip microcomputer circuit and LED array, and data transmission pin performs one chip microcomputer circuit and monolithic
I2C communication between machine control circuit 6.Pin is connected on the left side of base, is inserted in ultraviolet-visible/Infrared Non-destructive Testing
In the special pedestal of spectrogrph, power voltage supply pin and data transfer tube foot are connected to one by solder joint by base and aluminium base
Rise.One chip microcomputer circuit includes one chip microcomputer, 0402 encapsulation Chip-R and electric capacity, and they are all welded on aluminium base,
Control for LED array sequence of light.LED array includes 24 Single wavelength LED and 25 multi-wavelength LED lamps (see Fig. 6),
Wavelength all in ultraviolet-visible spectrum and infrared range of spectrum, its supply voltage by one chip microcomputer draw 0402 encapsulation
The bleeder circuit that Chip-R and LED array are constituted regulates.One chip microcomputer system model is UFQFPN20 encapsulation
STM8S003 single-chip microcomputer, its size is only 3 × 3mm2, cost is relatively low.The end of light conductor is convex surface, has light-focusing function, light warp
Light conductor sends and is radiated at detected material surface.The inner surface of light conducting cylinder is minute surface, is used for fixing light conductor and aluminium base, also
Optically focused effect can be played.
Photoelectric sensor 4 is for ultraviolet-visible/infrasil photodiode, its spectrum acquisition wider range, can read
The intensity of ultraviolet-visible/infrared light.
Circuits System includes the amplification of single chip machine controlling circuit 6, power amplifier 8, signal and filter circuit 5 and data transmission
Circuit 7.Wherein, the core parts of single chip machine controlling circuit 6 are nRF51822 singlechip chips, including general purpose I/O Interface
(GPIO), I2C communication interface, analog-digital converter (ADC), bluetooth communication module.Single chip machine controlling circuit 6 is controlled by GPIO
Power amplifier 8 processed is light source 3 of short duration power supply of a length of 20s when carrying out, and is controlled the minitype single-chip of light source 3 by I2C communication interface
Dynamo-electric road and the sequence of light of LED array, by ADC read voltage signal, and be converted into transmisivity data, pass through bluetooth
Module carries out wireless data transmission.The core parts of power amplifier 8 are that paster power amplification audion, predominantly light source 3 are powered.
Signal amplify and filter circuit 5 include use integrated operational amplifier build signal amplification circuit, low-pass filter circuit and
50Hz trap circuit, the voltage signal recorded mainly for the treatment of photoelectric sensor 4.Wherein, signal amplification circuit is to photoelectric transfer
The small-signal that sensor 4 records is amplified, and low-pass filter circuit filters the High-frequency Interference of doping, 50Hz trap circuit in signal
For filtering the Hz noise in signal.Data transmission circuit 7 uses USB communication, can upload surveyed data by data wire.
Shell 1 is the black cylinder (see Fig. 7) with light source slot, outlet, communication socket and sealing coat.Light source
Slot is for powering to light source 3, and outlet has duplex feeding positive pole and public negative pole, for ultraviolet-visible/infrared nondestructive
Detection spectrogrph is powered, and data transmission socket is for transmitting measured spectroscopic data, and sealing coat is mainly used to shield external rings
The border electromagnetic interference to Circuits System.
Power supply 9 is alkaline manganese battery.
Tested substance is placed in the position of detection mouth 2, and the detection light that light source 3 sends irradiates in place in detecting the tested of mouth 2
On material surface, the light intensity after measured matter absorbs is received by photoelectric sensor 4 and is converted into voltage signal.Voltage signal
Amplify and after filter circuit 5 filtering interfering through signal, by the core parts nRF51822 single-chip microcomputer of single chip machine controlling circuit 6
The ADC of chip reads and is converted to measured matter absorbance information.Absorbance information can be by data transmission circuit 7 on PC
Pass detection data.Described light source 3 is controlled power supply by single chip machine controlling circuit 6 by power amplifier 8.Signal amplifies and filtered electrical
Road 5, single chip machine controlling circuit 6, data transmission circuit 7, power amplifier 8 are all powered by power supply 9.
The mensuration of embodiment 4 pesticide residues
For pesticide omethoate, use the miniature ultraviolet-visible/Infrared Non-destructive Testing of reflective multi-wavelength of embodiment 1
The reflection-absorption curve (see Fig. 8) of spectrophotometer omethoate, as seen from the figure, 435nm and 765nm is the reflection of omethoate
Characteristic absorption peak, omethoate is compared reflection-absorption rate and be there is significantly change with pure water.
The mensuration of embodiment 5 pesticide residues
For pesticide omethoate, use the reflective dual wavelength miniature ultraviolet-visible/Infrared Non-destructive Testing of embodiment 2
The reflection-absorption rate (being shown in Table 1) of spectrophotometer variable concentrations omethoate, as seen from table, omethoate compares reflection with pure water
There is significantly change in absorbance.Use 435nm and 765nm dual-wavelength LEDs lamp light source detect, lowest detectable limit up to
To a ten million/concentration rank.
The reflection-absorption rate of table 1 variable concentrations omethoate
The analysis of embodiment 6 liquid
For longevity all mineral spring edible natural water (Ba Mahuoquan food and drink company) and the liquid analysis of tap water, adopt
With the absorption curve of the miniature ultraviolet-visible of the transmission-type multi-wavelength of embodiment 3/Infrared Non-destructive Testing spectrophotometer water (see figure
9), as seen from the figure, longevity all mineral spring edible natural water compares absorbance with tap water and there is significant change.
Claims (5)
1. miniature ultraviolet-visible/Infrared Non-destructive Testing spectrogrph (including reflective and transmission-type two types), its feature
It is to include light source, photoelectric sensor, Circuits System, shell and power supply；Described light source, is characterized in that including pin, base, aluminum
Substrate, one chip microcomputer circuit, LED array, light conductor and light conducting cylinder；Described photoelectric sensor, is characterized in that ultraviolet-can
See/infrasil photodiode, its spectrum acquisition wider range, can read the intensity of ultraviolet-visible/infrared light；Described
Circuits System, is characterized in that including the amplification of single chip machine controlling circuit, power amplifier, signal and filter circuit and data transmission electricity
Road；Described shell, is characterized in that with light source slot, outlet, communication socket and the cylinder of sealing coat；Described electricity
Source is DC source, can be specifically lithium battery, silver oxide cell or alkaline manganese battery.
The miniature ultraviolet-visible of one the most according to claim 1/Infrared Non-destructive Testing spectrogrph, is characterized in that described
Pin, is characterized in that including two-way power voltage supply pin, publicly pin, data transmission pin and synchronised clock pin, two-way
Power voltage supply pin powers to respectively one chip microcomputer circuit and LED array, and data transmission pin performs one chip microcomputer circuit
And the I2C communication between single chip machine controlling circuit；Described one chip microcomputer circuit, it is characterized in that including one chip microcomputer,
0402 encapsulation Chip-R and electric capacity, for the control of LED array sequence of light；Described LED array, is characterized in that including one
Individual or multiple LED, described LED can be Single wavelength LED or multi-wavelength LED lamp, wavelength at ultraviolet-visible spectrum and
In infrared range of spectrum.
The miniature ultraviolet-visible of one the most according to claim 1/Infrared Non-destructive Testing spectrogrph, is characterized in that described
The core parts of single chip machine controlling circuit are nRF51822 singlechip chips, connect including general purpose I/O Interface (GPIO), I2C communication
Mouth, analog-digital converter (ADC), bluetooth module, it is that light source is carried out that single chip machine controlling circuit controls power amplifier by GPIO
The of short duration power supply of Shi Changwei 20s, suitable by the one chip microcomputer circuit of I2C communication interface control light source and the luminescence of LED array
Sequence, by ADC read voltage signal, and is converted into absorbance or reflectivity data, carries out wireless number by bluetooth module
According to transmission；The core parts of described power amplifier are paster power amplification audions, predominantly light source power supply；Described signal
Amplify and filter circuit includes signal amplification circuit, low-pass filter circuit and the 50Hz trap that employing integrated operational amplifier builds
Circuit, the voltage signal recorded mainly for the treatment of photoelectric sensor, it is faint that photoelectric sensor is recorded by signal amplification circuit
Signal is amplified, and low-pass filter circuit filters the High-frequency Interference of doping in signal, and 50Hz trap circuit is used for filtering in signal
Hz noise；Data transmission circuit uses USB communication or serial communication, can upload surveyed data by data wire.
The miniature ultraviolet-visible of one the most according to claim 1/Infrared Non-destructive Testing spectrogrph, is characterized in that described
Light source slot is for light source power supply, and described outlet has duplex feeding positive pole and public negative pole, for ultraviolet-can
See/Infrared Non-destructive Testing spectrogrph powers, described data transmission socket is for transmitting measured absorbance or reflectance number
According to, described sealing coat is mainly used to shield the external environment condition electromagnetic interference to Circuits System.
The miniature ultraviolet-visible of one the most according to claim 1/Infrared Non-destructive Testing spectrogrph is measuring one or more
Ultraviolet-visible/the infrared transmission of specific objective material or the application of reflection absorption spectrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387106.0A CN106092918A (en) | 2016-06-01 | 2016-06-01 | A kind of miniature UV, visible light/Infrared Non-destructive Testing spectrogrph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610387106.0A CN106092918A (en) | 2016-06-01 | 2016-06-01 | A kind of miniature UV, visible light/Infrared Non-destructive Testing spectrogrph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106092918A true CN106092918A (en) | 2016-11-09 |
Family
ID=57447516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610387106.0A Pending CN106092918A (en) | 2016-06-01 | 2016-06-01 | A kind of miniature UV, visible light/Infrared Non-destructive Testing spectrogrph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106092918A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107703081A (en) * | 2017-11-10 | 2018-02-16 | 三锋集团有限公司 | A kind of lossless fast determining method of fruit and vegetable surfaces residues of pesticides |
| CN110383047A (en) * | 2016-11-20 | 2019-10-25 | 尤尼斯拜特罗有限责任公司 | Multiband imaging system |
| WO2023237925A1 (en) * | 2022-06-08 | 2023-12-14 | Shenzhen Vispek Tech Co. Ltd. | On-chip wide uv-vis-nir spectral sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1672628A (en) * | 2005-04-29 | 2005-09-28 | 天津大学 | Dynamic spectrometry instrument with multiple wavelength LED |
| US7478757B2 (en) * | 2003-04-29 | 2009-01-20 | Sipca Holding S.A. | Method and device for the authentication of documents and goods |
| CN102435580A (en) * | 2011-12-23 | 2012-05-02 | 吉林大学 | Quick near-infrared measuring device and method for milk ingredients |
| CN102564997A (en) * | 2012-01-17 | 2012-07-11 | 南京理工大学 | Domestic near-infrared detection device for food quality |
-
2016
- 2016-06-01 CN CN201610387106.0A patent/CN106092918A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7478757B2 (en) * | 2003-04-29 | 2009-01-20 | Sipca Holding S.A. | Method and device for the authentication of documents and goods |
| CN1672628A (en) * | 2005-04-29 | 2005-09-28 | 天津大学 | Dynamic spectrometry instrument with multiple wavelength LED |
| CN102435580A (en) * | 2011-12-23 | 2012-05-02 | 吉林大学 | Quick near-infrared measuring device and method for milk ingredients |
| CN102564997A (en) * | 2012-01-17 | 2012-07-11 | 南京理工大学 | Domestic near-infrared detection device for food quality |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110383047A (en) * | 2016-11-20 | 2019-10-25 | 尤尼斯拜特罗有限责任公司 | Multiband imaging system |
| CN110383047B (en) * | 2016-11-20 | 2022-06-07 | 尤尼斯拜特罗有限责任公司 | Multiband imaging system |
| CN107703081A (en) * | 2017-11-10 | 2018-02-16 | 三锋集团有限公司 | A kind of lossless fast determining method of fruit and vegetable surfaces residues of pesticides |
| CN107703081B (en) * | 2017-11-10 | 2020-06-23 | 三锋集团有限公司 | Nondestructive rapid detection method for pesticide residues on surfaces of fruits and vegetables |
| WO2023237925A1 (en) * | 2022-06-08 | 2023-12-14 | Shenzhen Vispek Tech Co. Ltd. | On-chip wide uv-vis-nir spectral sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103207016B (en) | Spectral type solar radiance measuring instrument | |
| CN100516791C (en) | Method and device for measuring intensity of UV. | |
| CN103344329B (en) | Handheld optical irradiance meter and correction method thereof | |
| US20170212049A9 (en) | Method and Apparatus for Nondestructive Quantification of Cannabinoids | |
| CN103281459A (en) | Mobile phone capable of measuring sweetness and PH value of fruit | |
| CN101876630A (en) | Portable fruit quality nondestructive testing device based on LED combined light source | |
| CN101377462A (en) | THz wave detector, detecting system and method | |
| CN106404733B (en) | Food safety detection device and detection method based on mobile intelligent terminal | |
| CN201307089Y (en) | A Terahertz wave detector and a detection system | |
| CN106092918A (en) | A kind of miniature UV, visible light/Infrared Non-destructive Testing spectrogrph | |
| CN103472011A (en) | Portable fruit internal-quality detection device using optical detector | |
| CN102207452A (en) | Measuring system and method of crop canopy spectral indexes | |
| CN207675640U (en) | A kind of agricultural product nutritional quality detection spectrometer | |
| CN102538963A (en) | High-sensitivity light spectrum acquisition and test system with board waveband covering visible light | |
| CN102768199A (en) | Miniature spectrograph for rapidly measuring material transmittance or reflectivity | |
| US9746418B2 (en) | Portable reflectometer and method for characterising the mirrors of solar thermal power plants | |
| CN206772438U (en) | Absorption and fluorescence spectrum detecting device based on mobile intelligent terminal | |
| CN203191307U (en) | Portable ultraviolet visible spectrograph integrated machine | |
| CN105784606A (en) | Optical property based water quality monitoring system | |
| Rogalski et al. | Detection of optical signals | |
| CN203337259U (en) | Hand-held optical radiation meter | |
| CN110926762B (en) | System and method for detecting out-of-band inhibition capability of ultraviolet imager | |
| CN104535498B (en) | Organic phosphorus detector | |
| Tian et al. | Exploring smartphone-based environmental sensors through applying perovskite quantum dots | |
| CN201788150U (en) | Near infrared detector based on fixed grating and CCD technology |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |