CN111474159A - Smart phone with fluorescent pollutant detection function and detection method - Google Patents
Smart phone with fluorescent pollutant detection function and detection method Download PDFInfo
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- CN111474159A CN111474159A CN202010492593.3A CN202010492593A CN111474159A CN 111474159 A CN111474159 A CN 111474159A CN 202010492593 A CN202010492593 A CN 202010492593A CN 111474159 A CN111474159 A CN 111474159A
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- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N21/6456—Spatial resolved fluorescence measurements; Imaging
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72439—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for image or video messaging
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- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
- G01N2021/6421—Measuring at two or more wavelengths
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Abstract
The invention belongs to the field of smart phones, and relates to a smart phone with a fluorescent pollutant detection function and a detection method. The invention provides a function of integrating fluorescent pollutant detection in a smart phone for the first time, wherein fluorescent pollutant detection software is used for controlling a fluorescent excitation light source module to irradiate a detected object and excite an organic pollutant to emit fluorescence, a fluorescent shooting camera is synchronously started to collect image information filtered by an optical filter, and the collected image information is analyzed to obtain the position and concentration information of the pollutant. The smart phone has the organic pollutant fluorescence detection function and has the remarkable advantages of low cost, convenience in carrying, high timeliness and the like. The invention provides convenient and quick real-time pollutant detection equipment for a user, and greatly improves the market competitiveness of the smart phone.
Description
Technical Field
The invention belongs to the field of smart phones, and particularly relates to a smart phone capable of conveniently detecting organic pollutants in food and environment in real time and a detection method.
Background
With the continuous improvement of living standard of people, more and more people are becoming aware of the importance of health, and the food safety and environmental sanitation problems are becoming the focus of people's attention in life. In daily life of people, organic pollutants are very common pollutants, such as feces pollutants, organic pesticide residue pollutants, pathogenic bacteria pollutants such as escherichia coli O157: H7, salmonella, listeria and the like, and are various and wide in distribution range, so that environmental sanitation is damaged, food poisoning frequently occurs, virus propagation is difficult to control, and life health of people is seriously influenced. The timely discovery and removal of organic pollutants play an extremely important role in guaranteeing food safety, environmental sanitation and reducing the spread rate of diseases. In addition, organic pollutants on the surface of the food can be removed in time, so that the storage time of the food can be prolonged, the waste in a food supply chain is reduced, and the whole ecological environment is improved. However, slight organic contaminants on the surface of food and in the environment are easily overlooked because they are not readily detectable to the naked eye. Therefore, how to identify organic pollutants quickly, efficiently and conveniently becomes a very much concern in daily life of people.
The method for identifying the organic pollutants by adopting the chromatographic separation detection technology is a traditional organic pollutant detection method, but the method needs to depend on large-scale equipment, is complex to operate and long in detection time, and is not suitable for field detection. In addition, the method needs to use an organic solvent in the detection process, and is easy to cause secondary environmental pollution. In recent years, microscopic imaging techniques and spectroscopic detection techniques have been used to detect organic contaminants. The organic pollutant detection method based on the microscopic imaging technology determines the polluted condition by observing the pollutant loading capacity on the surface of an object to be detected through microscopic imaging. Because the field of view of the microscope is very small, in order to comprehensively detect the pollution condition of the detected object, the detected object needs to be scanned and imaged, so the method has the advantages of low detection speed, complex detection process and expensive and complex equipment. The organic pollutant detection based on the spectrum detection technology comprises a fluorescence spectrum detection technology, a mid-infrared detection technology, a Raman spectrum detection technology and the like. The technologies have the advantages of high detection speed, high precision, no damage to samples and the like, and are hot spots of research in the field at present. However, the detection equipment required by these techniques is complex in structure and expensive, and therefore is only suitable for laboratory sampling detection.
The laboratory test devices described above are time consuming, labor intensive and inefficient for the average consumer, and therefore are completely unsuitable for use by the average consumer. For common consumers, the organic pollutant detection equipment which can be conveniently carried and has the rapid real-time detection capability is urgently expected by the common consumers, the selected products can be rapidly detected and analyzed at any time when foods such as vegetables and fruits are purchased, and the sanitary conditions of the hotel can be rapidly checked when the users live in the hotel.
The smart phone is a widely used electronic device, has functions not only limited to simple communication, but also includes various functions of entertainment, learning, payment and the like, and is an essential part for people to carry along with voice in daily life. If can increase the pollutant and detect the function on the basis of current smart mobile phone, will provide the real-time detection equipment of a convenient and fast pollutant for the user, also will improve smart mobile phone's market competition simultaneously by a wide margin.
Disclosure of Invention
In order to solve the problems, the invention provides a smart phone with a fluorescent pollutant detection function and a detection method, wherein fluorescent pollutant detection software is used for controlling a fluorescent excitation light source module to irradiate a detected object and excite an organic pollutant to emit fluorescence, a fluorescent shooting camera is synchronously started to collect image information filtered by an optical filter, and the collected image information is analyzed and processed to obtain pollutant information. Aiming at the problems of poor detection timeliness, extremely low applicability of common consumers and the like caused by high cost and heavy volume of the existing organic pollutant detection equipment, the smart phone provided by the invention has the organic pollutant fluorescence detection function, has the remarkable advantages of low cost, convenience in carrying, high timeliness and the like, and can be used for detecting pollutants in real time anytime and anywhere.
In one aspect, the invention provides a smart phone with a fluorescent pollutant detection function, which comprises a smart phone body and is characterized in that: the device also comprises fluorescence pollutant detection software, a fluorescence excitation light source module and a fluorescence shooting camera; the fluorescence pollutant detection software is used for controlling the fluorescence excitation light source module to emit light, controlling the fluorescence shooting camera to acquire image information of the measured object and analyzing pollutant information on the surface of the measured object; the fluorescence excitation light source module comprises a fluorescence excitation light source and a light source shaping lens, the fluorescence excitation light source is used for emitting excitation light for realizing fluorescence detection on a detected object, and the light source shaping lens is used for adjusting the irradiation area and the light beam uniformity degree of the fluorescence excitation light, so that the problems of low fluorescence excitation efficiency caused by over diffusion of the energy of the excitation light and poor detection response consistency caused by uneven irradiation of a laser light source are solved; the fluorescence shooting camera comprises an optical filter, an imaging lens and an image sensor, wherein the optical filter is used for filtering light information of the wave band of the exciting light and preventing the exciting light from entering the image sensor to interfere with the identification of useful fluorescence information, the imaging lens is used for imaging a measured object on the image sensor, and the image sensor is used for collecting the image information of the measured object.
On the other hand, the invention provides a detection method based on a smart phone with a fluorescent pollutant detection function, which is characterized by comprising the following steps: the fluorescent pollutant detection software sends an instruction to the fluorescent excitation light source module; the fluorescence excitation light source module emits excitation light to irradiate a measured object after receiving the instruction, and an image of the measured object is imaged on an image sensor of the fluorescence shooting camera by an imaging lens of the fluorescence shooting camera after optical information of an excitation light wave band is filtered by an optical filter of the fluorescence shooting camera; meanwhile, the fluorescence pollutant detection software controls an image sensor of the fluorescence shooting camera to acquire image information of the measured object; after the image sensor of the fluorescence shooting camera collects the image information of the measured object, the fluorescence pollutant detection software sends an instruction to the fluorescence excitation light source module to control the fluorescence excitation light source module to stop emitting excitation light; the fluorescence pollutant detection software analyzes the pollutant information on the surface of the measured object through the acquired image information of the measured object.
Compared with the prior art, the invention has the following innovation points and remarkable advantages:
1. the smart phone has a fluorescent pollutant detection function, the fluorescent excitation light source module and the fluorescent shooting camera are integrated in the smart phone body, so that the size of the smart phone is greatly simplified, the cost is reduced, the smart phone is convenient for a user to carry, and the pollutant detection function of the smart phone provides convenience for the user;
2. the invention can detect the organic pollutants by utilizing the powerful image shooting function and the data processing capacity of the smart phone, and can accurately and quickly obtain the area occupied by the pollutants and the concentration information of the pollutants;
3. the invention utilizes the strong visual expression capability of the smart phone, can clearly display the pollutant position information and the concentration information on the screen of the smart phone, and adds an auxiliary indication function, thereby facilitating the user to quickly position the pollutant and take action;
4. according to the invention, application software is developed on the smart phone, the light-emitting time sequence of the fluorescence excitation light source module is accurately controlled, the synchronization between the fluorescence excitation light source module and the shooting of a fluorescence shooting camera in a pulse working mode is ensured, the power consumption of a system can be greatly reduced, and the endurance time is increased;
5. the invention provides a multifunctional smart phone which directly supplies power to a fluorescence excitation light source module by using a power supply system in the smart phone body, thereby further reducing the complexity and cost of the multifunctional smart phone and improving the portability of the system.
Drawings
FIG. 1 is a schematic diagram of a smart phone with fluorescent contaminant detection of the present invention;
FIG. 2 is a partially enlarged schematic view of a smart phone with fluorescent contaminant detection of the present invention;
FIG. 3 is a schematic diagram of the pollutant detection method based on a smart phone with fluorescent pollutant detection function according to the present invention;
FIG. 4 shows the result of detecting organic contaminants on the surface of fruits according to the present invention;
wherein: the method comprises the following steps of 1-a smart phone body, 2-fluorescent pollutant detection software, 3-a fluorescent excitation light source module, 4-a fluorescent shooting camera, 5-a main board, 6-a power supply system, 7-a detected object, 8-an image of detected fruit when excitation light is emitted, 9-an image of detected fruit when excitation light is not emitted, 10-a fruit surface pollutant area, 301-a fluorescent excitation light source, 302-a light source shaping lens, 401-an optical filter, 402-an imaging lens and 403-an image sensor.
Detailed Description
The invention is further illustrated by the following figures and examples.
The invention integrates the fluorescence spectrum organic pollutant detection technology into the existing smart phone, can realize the rapid real-time detection of the organic pollutants on the surface of the detected object, has the advantages of convenient carrying and low cost, and is very suitable for common consumers. The practice of the present invention is illustrated in detail by the following examples.
Example 1
The method includes the steps that a built smart phone with a fluorescent pollutant detection function is shown in figures 1 and 2 and comprises a smart phone body 1, fluorescent pollutant detection software 2, a fluorescent excitation light source module 3 and a fluorescent shooting camera 4, the fluorescent excitation light source module 3 and the fluorescent shooting camera 4 are integrated inside the smart phone body 1 and communicate with the fluorescent pollutant detection software 2 through a main board 5 inside the smart phone body 1, a power supply system 6 inside the smart phone body 1 supplies power to the fluorescent excitation light source module 3, the fluorescent pollutant detection software 2 is used for controlling the fluorescent excitation light source module 3 to emit light, controlling the fluorescent shooting camera 4 to collect image information of a detected object 7 and analyze pollutant information on the surface of the detected object 7, the fluorescent excitation light source module 3 is located near the fluorescent shooting camera 4 and ensures the light energy utilization rate of the fluorescent excitation light source module 3, the fluorescent excitation light source module 301 and a light source shaping lens 302, the fluorescent excitation light source 301 specifically uses 2 light sources with central wavelengths of 450 nm and bandwidths of 10 nm, L light sources with wavelengths of which are used for realizing that the fluorescent detection of the detected object 7, the fluorescent detection is 450 nm, the fluorescent excitation light source module 3 and the fluorescent excitation light source module 403 is used for preventing the detected by a fluorescent excitation light source 403, the fluorescent image sensor from entering a fluorescence imaging sensor 403, the fluorescent image sensor 403 which is used for detecting the fluorescent image sensor, the fluorescent image sensor which is used for preventing the fluorescent image sensor and the fluorescent image sensor from entering the fluorescent image sensor, the fluorescent image sensor which is used for detecting the fluorescent image sensor, the fluorescent:
the fluorescence pollutant detection software 2 sends an instruction to the fluorescence excitation light source module 3 through the main board 5 in the smart phone body 1, the fluorescence excitation light source module 3 receives the instruction and then drives L ED light sources to emit excitation light with the wavelength of 450 nm and the bandwidth of 10 nm, the excitation light is condensed by the light source shaping lens 302 and then irradiates the measured object 7, an image of the measured object 7 is imaged on the image sensor 403 by the imaging lens 402 after optical information with the wave band smaller than 465 nm is filtered by the optical filter 401, the fluorescence pollutant detection software 2 synchronously controls the image sensor 403 to acquire image information of the measured object 7 while sending a light emitting instruction, after the image sensor 403 acquires the image information of the measured object 7, the fluorescence pollutant detection software 2 sends a light emitting stopping instruction to the fluorescence excitation light source module 3 through the main board 5 in the smart phone body 1, the fluorescence excitation light source module 3 stops emitting the excitation light after receiving the instruction and then analyzes the acquired image information of the measured object 7 to obtain the pollutant information on the surface of the measured.
The time when the fluorescent pollutant detection software 2 starts to emit pulsed light is recorded, the pulse length is set to be 5 μ s, the minimum exposure time is larger than 4 μ s of the image sensor 403, the fluorescent shooting camera 4 is synchronously started to shoot image information of the measured object 7 after being filtered by the optical filter 401 at the same time when the pulsed light is emitted, so that L ED light source is in a light-emitting state when the image sensor 403 of the fluorescent shooting camera 4 shoots an image, the power consumption of a system is greatly reduced by adopting a mode of emitting the pulsed light, and the endurance time of the smart phone is prolonged.
The fluorescence shooting camera 4 of the embodiment respectively shoots the images of the detected object 7 when the fluorescence excitation light source module 3 emits 450 nm purple light and does not emit 450 nm purple light; then, the fluorescent contaminant detection software 2 processes the two images to obtain fluorescent intensity information corresponding to each position point of the object 7 to be detected, and obtains the area occupied by the contaminant and the concentration information of the contaminant according to the fluorescent intensity information of each position point, which are reflected as the position information of fruit rot and the information of the degree of fruit rot in this embodiment. As shown in fig. 4, the area 10 of contamination and the degree of contamination on the surface of the fruit is obtained by processing the image 8 of the fruit being measured when the excitation light is emitted and the image 9 of the fruit being measured when the excitation light is not emitted.
Example 2
Unlike embodiment 1, in the smartphone with a fluorescent pollutant detection function constructed in this embodiment, the optical filter 401 is a tunable optical filter, and the fluorescence spectrum image of the object 7 to be measured, which is captured by the fluorescence capturing camera 4, is changed by changing the optical wave transmission wavelength of the tunable optical filter. Every time the wavelength is changed, the fluorescence shooting camera 4 shoots a fluorescence spectrum image of the measured object 7, so that a series of fluorescence spectrum images of the measured object 7 with different wavelengths are obtained, and the type of the pollutants is more accurately judged according to the fluorescence spectrum information.
Example 3
Different from the embodiment 2, in the smartphone fluorescence spectrum pollutant detection apparatus constructed in the embodiment, a series of measured object fluorescence spectrum images of different wavelengths of the measured object 7 acquired by the fluorescence photographing camera 4 are analyzed and processed by using an artificial intelligence algorithm, so that information such as pollutant types, distribution areas, concentrations and the like can be extracted more accurately and rapidly.
While the invention has been described in connection with specific embodiments thereof, it will be understood that these should not be construed as limiting the scope of the invention, which is defined in the appended claims, any modifications to which this invention pertains being applicable being within the scope of the invention defined in the following claims.
Claims (8)
1. Smart phone with fluorescence pollutant detects function, including the smart mobile phone body, its characterized in that: the device also comprises fluorescence pollutant detection software, a fluorescence excitation light source module and a fluorescence shooting camera; the fluorescence pollutant detection software is used for controlling the fluorescence excitation light source module to emit light, controlling the fluorescence shooting camera to acquire image information of the measured object and analyzing pollutant information on the surface of the measured object; the fluorescence excitation light source module comprises a fluorescence excitation light source and a light source shaping lens, the fluorescence excitation light source is used for emitting excitation light for realizing fluorescence detection on a detected object, and the light source shaping lens is used for adjusting the irradiation area and the light beam uniformity degree of the fluorescence excitation light, so that the problems of low fluorescence excitation efficiency caused by over diffusion of the energy of the excitation light and poor detection response consistency caused by uneven irradiation of a laser light source are solved; the fluorescence shooting camera comprises an optical filter, an imaging lens and an image sensor, wherein the optical filter is used for filtering light information of the wave band of the exciting light and preventing the exciting light from entering the image sensor to interfere with the identification of useful fluorescence information, the imaging lens is used for imaging a measured object on the image sensor, and the image sensor is used for collecting the image information of the measured object.
2. The smart phone with the function of detecting fluorescent pollutants as claimed in claim 1, wherein the fluorescence excitation light source module and the fluorescence shooting camera are integrated inside the smart phone body, and are communicated with the fluorescence pollutant detection software through a main board inside the smart phone body, and the fluorescence excitation light source module and the fluorescence shooting camera are powered by a power supply system inside the smart phone body.
3. The smart phone with the fluorescent pollutant detection function according to claim 1 or 2, wherein the physical position of the fluorescence excitation light source module is located near the fluorescence shooting camera, so as to ensure the light energy utilization rate of the fluorescence excitation light source module.
4. The smart phone with the function of detecting fluorescent pollutants according to claim 1, wherein the optical filter is a tunable optical filter, and a series of fluorescence spectrum images of the detected object with different wavelengths are obtained by changing the light wave transmission wavelength of the tunable optical filter and combining the fluorescence excitation light source module and the fluorescence shooting camera for shooting, so as to judge the types of pollutants more accurately.
5. The pollutant detection method of the smart phone with the fluorescent pollutant detection function is characterized by comprising the following steps of: the fluorescent pollutant detection software sends an instruction to the fluorescent excitation light source module; the fluorescence excitation light source module emits excitation light to irradiate a measured object after receiving an instruction, and an image of the measured object is imaged on an image sensor of a fluorescence shooting camera by an imaging lens of the fluorescence shooting camera after optical information of an excitation light wave band is filtered by an optical filter of the fluorescence shooting camera; meanwhile, the fluorescence pollutant detection software controls an image sensor of the fluorescence shooting camera to acquire image information of the measured object; after the image sensor of the fluorescence shooting camera collects the image information of the measured object, the fluorescence pollutant detection software sends an instruction to the fluorescence excitation light source module to control the fluorescence excitation light source module to stop emitting excitation light; the fluorescence pollutant detection software analyzes the pollutant information on the surface of the measured object through the acquired image information of the measured object.
6. The method of detecting contaminants of a smartphone having a fluorescent contaminant detection function according to claim 5, wherein: the light emitted by the fluorescence excitation light source module is pulse light, the starting time and the pulse length of the pulse light are strictly synchronized through fluorescence pollutant detection software, and the fluorescence excitation light source module is ensured to be in a light-emitting state when an image sensor of the fluorescence shooting camera shoots an image.
7. The method of detecting contaminants of a smartphone having a fluorescent contaminant detection function according to claim 5, wherein: the fluorescence shooting camera respectively shoots images of the measured object when the fluorescence excitation light source module emits excitation light and does not emit excitation light; then, the fluorescence pollutant detection software processes two images respectively shot when the fluorescence excitation light source module emits excitation light and does not emit excitation light to obtain fluorescence intensity information corresponding to each position point of the detected object, and the area occupied by the pollutant and the concentration information of the pollutant are obtained through the fluorescence intensity information of each position point.
8. The method of detecting contaminants of a smartphone having a fluorescent contaminant detection function according to claim 5, wherein: and analyzing the acquired image information of the detected object by using an artificial intelligence-based algorithm, and extracting pollutant information.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112461806A (en) * | 2020-11-18 | 2021-03-09 | 厦门大学 | Fluorescence spectrum detection method based on smart phone |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112461806A (en) * | 2020-11-18 | 2021-03-09 | 厦门大学 | Fluorescence spectrum detection method based on smart phone |
| CN112461806B (en) * | 2020-11-18 | 2022-02-11 | 厦门大学 | Fluorescence spectrum detection method based on smart phone |
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