CN107340253B - Handheld organic matter detection terminal and detection method thereof - Google Patents
Handheld organic matter detection terminal and detection method thereof Download PDFInfo
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- CN107340253B CN107340253B CN201710195756.XA CN201710195756A CN107340253B CN 107340253 B CN107340253 B CN 107340253B CN 201710195756 A CN201710195756 A CN 201710195756A CN 107340253 B CN107340253 B CN 107340253B
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- 238000001514 detection method Methods 0.000 title claims abstract description 179
- 239000005416 organic matter Substances 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 239000008213 purified water Substances 0.000 description 4
- 238000002835 absorbance Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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
- G01N21/17—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
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention relates to a handheld organic matter detection terminal and a detection method thereof, wherein the handheld organic matter detection terminal comprises an organic matter detection sensor and an outer cover shell sleeved outside the organic matter detection sensor, the organic matter detection sensor comprises a light source component capable of emitting ultraviolet rays and a detection component which is matched with the light source component and is capable of detecting the content of organic matters in water, and the light source component comprises a light-emitting lamp (1), a transparent triple prism (2), a rear diaphragm (3) and a driving mechanism (21); the detection assembly comprises a detection tube (4), an ultraviolet receiver (5) and a circuit board (6), wherein the circuit board (6) is used for calculating the content of different organic matters in water passing through the detection tube (4) according to the intensity of ultraviolet rays received by the ultraviolet receiver (5). Compared with the prior art, the invention has the advantages that: the device can effectively detect the contents of different organic matters in water, has few parts and simple structure, and can be manufactured into detection parts with smaller volume and lower cost.
Description
Technical Field
The invention relates to an organic matter detection device, in particular to a handheld organic matter detection terminal and a detection method thereof, which are used for detecting the content of different organic matters in water.
Background
At present, the detection of the content of the organic matters mainly depends on a spectrophotometer, and the working principle is as follows: the total content of the organic matters is indirectly represented by the absorbance of the ultraviolet rays with the wavelength of 254 nanometers, after the ultraviolet rays with the wavelength of 254 nanometers penetrate through water, the organic matters in the water absorb part of the ultraviolet rays, and the higher the concentration of the organic matters is, the higher the intensity of the ultraviolet ray absorption is, so the absorbance of the ultraviolet rays corresponds to the content of the organic matters. Different organic matters have different absorption intensities for ultraviolet rays with different wavelengths, and the content of different organic matters in the water can be approximately analyzed by scanning the absorption intensities of the ultraviolet rays with different wavelengths.
However, the spectrophotometer itself is an instrument, which is very expensive and very bulky, and above all has a certain obstacle to the use of ordinary people.
Disclosure of Invention
The invention aims to provide a hand-held organic matter detection sensor and a detection method thereof, which are convenient to carry, small in size, low in cost and high in applicability.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a hand-held type organic matter detects sensor, includes organic matter detection sensor and overlaps the outer housing of establishing outside organic matter detection sensor, wherein, organic matter detection sensor includes the light source subassembly that can send ultraviolet ray, and with the detection subassembly of the aquatic organic matter content of ability of light source subassembly complex, the light source subassembly includes
A light-emitting lamp capable of emitting ultraviolet rays of 185nm to 400nm at least;
a transparent triple prism for wavelength-dividing ultraviolet rays emitted from the light-emitting lamp;
the rear diaphragm is arranged behind the transparent triple prism, and a rear light transmission slit is formed in the rear diaphragm;
the driving mechanism is connected with the transparent triple prism and is used for driving the transparent triple prism to rotate so that ultraviolet rays which penetrate through the transparent triple prism and are divided into different wavelengths respectively penetrate through the rear light transmission slits on the rear diaphragm;
the detection assembly comprises
A detection tube capable of being penetrated by ultraviolet rays transmitted through a rear light-transmitting slit on the rear diaphragm, through which water can pass;
an ultraviolet receiver for detecting the intensity of ultraviolet rays emitted from the rear light-transmitting slit on the rear diaphragm and penetrating the detection tube;
the circuit board is connected with the ultraviolet receiver and is used for calculating the content of different organic matters in the water passing through the detection tube according to the intensity of ultraviolet rays received by the ultraviolet receiver.
As an improvement, the light source assembly further comprises a front diaphragm arranged between the light-emitting lamp and the transparent triple prism, and a front light transmission slit is formed in the front diaphragm.
Still improve, the light source subassembly still includes the base that is used for bearing transparent prism, actuating mechanism and base connection, the base is other to be equipped with the zero point position detection switch, and this zero point position detection switch also is connected with actuating mechanism.
The organic matter sensor further comprises a shell, a detection tube accommodating cavity is formed in the shell, and the detection tube is arranged in the detection tube accommodating cavity; the light source component and the ultraviolet receiver are respectively arranged on two opposite sides of the detection tube.
And the shell is connected with a water inlet connector and a water outlet connector which are respectively communicated with two ends of the detection tube.
And the water inlet joint and the water outlet joint are further improved, and sealing rings are arranged at the positions where the water inlet joint and the water outlet joint are connected with the two ends of the detection pipe.
Further improved, the detection assembly further comprises a wavelength detection device for detecting the wavelength of ultraviolet rays passing through the detection tube, and the wavelength detection device is also connected with the circuit board.
The wavelength detection device is arranged beside the ultraviolet receiver.
The organic matter sensor of the invention further comprises a comparison group ultraviolet receiver arranged behind the light path of the rear light transmission slit of the rear diaphragm, and the comparison group ultraviolet receiver is also connected with the circuit board.
And the display screen connected with the signal processing circuit is arranged on the outer cover.
The technical scheme adopted for solving the further technical problems is as follows: the detection method of the organic matter detection sensor with the structure is characterized in that: the method comprises the following steps:
step (1), pre-storing an absorption degree comparison table of different organic matters to ultraviolet rays with different wavelengths in a circuit board;
step (2), vacuumizing the detection tube, or keeping the detection tube full of air, or flushing purified water in the detection tube, then starting the light-emitting lamp, and driving the transparent triple prism to rotate by the driving mechanism, so that the transparent triple prism is divided into ultraviolet rays with different wavelengths, the ultraviolet rays penetrate through rear light transmission gaps on the rear diaphragm respectively, then penetrate through the detection tube, the wavelength of the ultraviolet rays penetrating through the detection tube is recorded by the wavelength detection device, meanwhile, the ultraviolet intensity values received by the ultraviolet receiver are recorded by the circuit board under the condition of different ultraviolet wavelength, and the ultraviolet intensity values are recorded as ultraviolet intensity reference values;
step (3), keeping a light-emitting lamp on, enabling water to be detected to flow through the detection tube, driving the transparent triple prism to rotate through the driving mechanism, dividing the transparent triple prism into ultraviolet rays with different wavelengths, enabling the ultraviolet rays to pass through rear light transmission gaps on the rear diaphragm respectively, then penetrating through the detection tube, recording the wavelength of the ultraviolet rays passing through the detection tube through wavelength detection equipment, recording ultraviolet intensity values received by an ultraviolet receiver under the condition of different ultraviolet wavelengths by a circuit board, recording the ultraviolet intensity values as ultraviolet intensity detection values, and comparing the ultraviolet intensity detection values with ultraviolet intensity reference values under the condition of corresponding ultraviolet wavelengths in the step (2), so as to obtain the absorption degree of different organic matters on the ultraviolet rays under the condition of the ultraviolet rays with different wavelengths; and (3) obtaining the content of different organic matters in the water by inquiring the pre-stored absorption degree comparison table in the step (1).
The light source assembly further comprises a base for bearing the transparent triangular prism, the driving mechanism is connected with the base, a zero position detection switch is arranged beside the base, and the zero position detection switch is also connected with the driving mechanism;
in the step 2 and the step 3, the driving mechanism firstly carries out zero-point positioning control on the position of the base through the zero-point position detection switch, then the driving mechanism drives the transparent triple prism to rotate clockwise, then the wavelength detection device records the ultraviolet intensity value of ultraviolet rays passing through the detection tube, meanwhile, the circuit board records the ultraviolet intensity value received by the ultraviolet receiver under the condition of different ultraviolet wavelength until the ultraviolet light with the maximum wavelength emitted by the luminous lamp is detected, then the driving mechanism drives the transparent triple prism to rotate anticlockwise until the position of the base returns to the zero-point position, at the moment, the wavelength detection device also records the ultraviolet intensity value of ultraviolet rays passing through the detection tube, the circuit board also records the ultraviolet intensity value received by the ultraviolet receiver under the condition of different ultraviolet wavelength, and the circuit board carries out average statistics on the ultraviolet intensity value which is recorded to rotate clockwise and anticlockwise twice, so as to obtain the ultraviolet intensity reference value and the ultraviolet intensity detection value.
When the organic matter sensor further comprises a comparison group ultraviolet receiver arranged behind the light path of the rear light transmission slit of the rear diaphragm, the detection method of the organic matter detection sensor comprises the following steps:
step (1), pre-storing an absorption degree comparison table of different organic matters to ultraviolet rays with different wavelengths in a circuit board;
step (2), vacuumizing a detection tube, or keeping the detection tube full of air, or flushing purified water in the detection tube, then starting the light-emitting lamp, and driving a transparent triple prism by a driving mechanism to rotate, so that the transparent triple prism is divided into ultraviolet rays with different wavelengths, the ultraviolet rays penetrate through rear light transmission gaps on a rear diaphragm respectively, then penetrate through the detection tube, the wavelength of the ultraviolet rays penetrating through the detection tube is recorded by wavelength detection equipment, meanwhile, the ultraviolet intensity values received by an ultraviolet receiver are recorded by a circuit board under the condition of different ultraviolet wavelength, and the ultraviolet intensity values are recorded as first ultraviolet intensity reference values; meanwhile, the circuit board records the ultraviolet intensity values received by the ultraviolet receivers of the comparison group under the condition of different ultraviolet wavelengths, and the ultraviolet intensity values are recorded as second ultraviolet intensity reference values;
step (3), keeping a luminescent lamp on, enabling water to be tested to flow through the detection tube, driving the transparent triple prism to rotate through the driving mechanism, dividing the transparent triple prism into ultraviolet rays with different wavelengths, respectively passing through rear light transmission slits on a rear diaphragm, then penetrating through the detection tube, recording the wavelength of the ultraviolet rays passing through the detection tube through wavelength detection equipment, recording ultraviolet intensity values received by a comparison group ultraviolet receiver under the condition of different ultraviolet wavelengths by a circuit board, recording the ultraviolet intensity values as temporary ultraviolet intensity reference values, dividing the temporary ultraviolet intensity reference values under the condition of different ultraviolet wavelengths by second ultraviolet intensity reference values under the condition of corresponding ultraviolet wavelengths, and obtaining light source intensity attenuation ratios under the condition of different self-appearance wavelengths; the circuit board records the ultraviolet intensity values received by the ultraviolet receiver under different ultraviolet wavelength conditions, records the ultraviolet intensity values as ultraviolet intensity detection values, multiplies the ultraviolet intensity detection values under different ultraviolet wavelength conditions by the light source intensity attenuation ratio under corresponding ultraviolet wavelength conditions to obtain ultraviolet intensity search values under different ultraviolet wavelength conditions, and then compares the ultraviolet intensity search values with the first ultraviolet intensity reference value under the corresponding ultraviolet wavelength conditions in the step (2) to obtain the ultraviolet absorption degree of different organic matters under the ultraviolet of different wavelengths; and (3) obtaining the content of different organic matters in the water by inquiring the pre-stored absorption degree comparison table in the step (1).
Compared with the prior art, the invention has the advantages that: can effectively detect the contents of different organic matters in water, has few parts, simple structure, convenient carrying, small volume, low cost and strong applicability.
Drawings
FIG. 1 is a schematic diagram of a handheld organic matter detection terminal according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of an organic matter detection sensor according to a first embodiment of the present invention;
FIG. 3 is a perspective cross-sectional view of an organic matter detection sensor according to a first embodiment of the present invention;
FIG. 4 is a top view of an organic matter detection sensor according to a first embodiment of the present invention;
fig. 5 is a perspective cross-sectional view of an organic matter detection sensor according to a second embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Example 1
The hand-held organic matter detection terminal shown in fig. 1 comprises an organic matter detection sensor, an outer housing 16 sleeved outside the organic matter detection sensor and a display screen 17; the outer cover 16 is connected with a handle 16c which is convenient for a user to hold; the outer casing 16 is also connected with a water inlet pipe 16a and a water outlet pipe 16b which are respectively connected with the water inlet joint 11 and the water outlet joint 12 in the organic matter detection sensor.
The organic matter detection sensor in this embodiment, as shown in fig. 2 to 4, includes a light source assembly capable of emitting ultraviolet rays, and a detection assembly matched with the light source assembly and capable of detecting the organic matter content in water, wherein the light source assembly includes
A light-emitting lamp 1 capable of emitting ultraviolet light of at least 185nm to 400 nm;
a transparent prism 2 for wavelength-dividing ultraviolet rays emitted from the light-emitting lamp 1;
a front diaphragm 7 arranged between the light-emitting lamp 1 and the transparent prism 2, wherein a front light-transmitting slit 71 is arranged on the front diaphragm 7;
a rear diaphragm 3 arranged behind the transparent triangular prism 2, and a rear light transmission slit 31 is arranged on the rear diaphragm 3;
the driving mechanism 21 is connected with the transparent triple prism 2 and is used for driving the transparent triple prism 2 to rotate so that ultraviolet rays which penetrate through the transparent triple prism 2 and are divided into different wavelengths respectively penetrate through the rear light transmission slits 31 on the rear diaphragm 3;
the detection assembly comprises
A detection tube 4 which is penetrated by ultraviolet rays transmitted through the rear light-transmitting slit 31 of the rear diaphragm 3, and through which water can pass through the detection tube 4;
an ultraviolet receiver 5 for detecting the intensity of ultraviolet rays emitted from the rear light-transmitting slit 31 of the rear diaphragm 3 and penetrating the detection tube 4;
the circuit board 6, the ultraviolet receiver 5 is connected with the circuit board 6, and the circuit board 6 is used for calculating the different organic matter contents in the water passing through the detection tube 4 according to the ultraviolet intensity received by the ultraviolet receiver 5.
The detection component is arranged in the shell 10, a detection tube accommodating cavity is formed in the shell 10, and the detection tube 4 is arranged in the detection tube accommodating cavity; the light source component and the ultraviolet receiver 5 are respectively arranged on two opposite sides of the detection tube 4. The shell 10 is connected with a water inlet joint 11 and a water outlet joint 12 which are respectively communicated with the two ends of the detection tube 4, and sealing rings 13 are arranged at the positions where the water inlet joint 11 and the water outlet joint 12 are connected with the two ends of the detection tube 4.
The detection assembly further comprises a wavelength detection device 14 for detecting the wavelength of ultraviolet light passing through the detection tube 4, which wavelength detection device 14 is also connected to said circuit board 6.
The detection method of the organic matter detection sensor in the embodiment comprises the following steps:
step (1), a comparison table of the absorption degree of different organic matters to ultraviolet rays with different wavelengths is pre-stored in a circuit board 6;
step (2), vacuumizing the detection tube 4, or keeping the detection tube 4 full of air, or flushing purified water in the detection tube 4, then starting the light-emitting lamp 1, and driving the transparent triple prism 2 to rotate by the driving mechanism 21, so that the transparent triple prism 2 is divided into ultraviolet rays with different wavelengths to respectively pass through the rear light transmission slits 31 on the rear diaphragm 3, then penetrate the detection tube 4, the wavelength of the ultraviolet rays passing through the detection tube 4 is recorded by the wavelength detection device 14, meanwhile, the ultraviolet intensity values received by the ultraviolet receiver 5 are recorded under the condition of different ultraviolet wavelength by the circuit board 6, and the ultraviolet intensity values are recorded as ultraviolet intensity reference values;
step (3), keeping the light-emitting lamp 1 on, enabling water to be detected to flow through the detection tube 4, driving the transparent triple prism 2 to rotate through the driving mechanism 21, so that the transparent triple prism 2 is divided into ultraviolet rays with different wavelengths to respectively pass through the rear light transmission slits 31 on the rear diaphragm 3, then penetrate through the detection tube 4, recording the wavelength of the ultraviolet rays passing through the detection tube 4 through the wavelength detection device 14, simultaneously recording the ultraviolet intensity values received by the ultraviolet receiver 5 under the condition of different ultraviolet wavelengths by the circuit board 6, recording the ultraviolet intensity values as ultraviolet intensity detection values, and comparing the ultraviolet intensity detection values with ultraviolet intensity reference values under the condition of corresponding ultraviolet wavelengths in the step (2), so as to obtain the absorption degree of different organic matters on the ultraviolet rays under the condition of ultraviolet rays with different wavelengths; and (3) obtaining the content of different organic matters in the water by inquiring the pre-stored absorption degree comparison table in the step (1).
For more accurate operation, the light source assembly may further include a base 8 for carrying the transparent prism 2, the driving mechanism 21 is connected to the base 8, a zero position detection switch 9 is disposed beside the base 8, and the zero position detection switch 9 is also connected to the driving mechanism 21; in the steps (2) and (3) of the detection method, the driving mechanism 21 performs zero-point positioning control on the position of the base 8 through the zero-point position detection switch 9, then the driving mechanism 21 drives the transparent triangular prism 2 to rotate clockwise, then the wavelength detection device 14 records the wavelength of ultraviolet rays passing through the detection tube 4, meanwhile, the circuit board 6 records the ultraviolet intensity values received by the ultraviolet receiver 5 under different ultraviolet wavelength conditions until the ultraviolet light with the maximum wavelength emitted by the light-emitting lamp 1 is detected, then the driving mechanism 21 drives the transparent triangular prism 2 to rotate anticlockwise until the position of the base 8 returns to the zero-point position, at this time, the wavelength detection device 14 also records the wavelength of ultraviolet rays passing through the detection tube 4, the circuit board 6 also records the ultraviolet intensity values received by the ultraviolet receiver 5 under different ultraviolet wavelength conditions, and the circuit board 6 records the ultraviolet intensity values rotating clockwise and anticlockwise twice to perform average statistics, so as to obtain the ultraviolet intensity reference value and the ultraviolet intensity detection value.
Example two
Unlike the first embodiment, a control ultraviolet receiver 15 is disposed behind the rear light-transmitting slit 31 of the rear diaphragm 3, and the control ultraviolet receiver 15 is also connected to the circuit board 6, as shown in fig. 5. The detection method of the organic matter detection sensor in the embodiment comprises the following steps:
step (1), a comparison table of the absorption degree of different organic matters to ultraviolet rays with different wavelengths is pre-stored in a circuit board 6;
step (2), vacuumizing the detection tube 4, or keeping the detection tube 4 full of air, or flushing purified water in the detection tube 4, then starting the light-emitting lamp 1, driving the drive mechanism 21 to drive the transparent triple prism 2 to rotate, so that the transparent triple prism 2 is divided into ultraviolet rays with different wavelengths to respectively pass through the rear light transmission slits 31 on the rear diaphragm 3, then penetrate the detection tube 4, recording the wavelength of the ultraviolet rays passing through the detection tube 4 by the wavelength detection device 14, recording the ultraviolet intensity values received by the ultraviolet receiver 5 under the condition of different ultraviolet wavelengths by the circuit board 6, and recording the ultraviolet intensity values as first ultraviolet intensity reference values; meanwhile, the circuit board 6 records the ultraviolet intensity values received by the ultraviolet receiver 15 of the comparison group under the condition of different ultraviolet wavelengths, and records the ultraviolet intensity values as second ultraviolet intensity reference values;
step (3), keeping the light-emitting lamp 1 on, enabling water to be tested to flow through the detection tube 4, driving the transparent triple prism 2 to rotate through the driving mechanism 21, so that the transparent triple prism 2 is divided into ultraviolet rays with different wavelengths to respectively pass through the rear light transmission slits 31 on the rear diaphragm 3, then penetrating through the detection tube 4, recording the wavelength of the ultraviolet rays passing through the detection tube 4 through the wavelength detection device 14, recording the ultraviolet ray intensity values received by the ultraviolet ray receiver 15 of the control group under the condition of different ultraviolet ray wavelengths by the circuit board 6, recording the ultraviolet ray intensity values as temporary ultraviolet ray intensity reference values, dividing the temporary ultraviolet ray intensity reference values under the condition of different ultraviolet ray wavelengths by the second ultraviolet ray intensity reference values under the condition of corresponding ultraviolet ray wavelengths, and obtaining the light source intensity attenuation proportion under the condition of different self-appearance wavelengths; the circuit board 6 records the ultraviolet intensity values received by the ultraviolet receiver 5 under different ultraviolet wavelength conditions, records the ultraviolet intensity values as ultraviolet intensity detection values, multiplies the ultraviolet intensity detection values under different ultraviolet wavelength conditions by the light source intensity attenuation proportion under corresponding ultraviolet wavelength conditions to obtain ultraviolet intensity search values under different ultraviolet wavelength conditions, and then compares the ultraviolet intensity search values with the first ultraviolet intensity reference value under the corresponding ultraviolet wavelength conditions in the step (2) to obtain the ultraviolet absorption degree of different organic matters under the ultraviolet of different wavelengths; and (3) obtaining the content of different organic matters in the water by inquiring the pre-stored absorption degree comparison table in the step (1).
Claims (7)
1. A handheld organic matter detects terminal which characterized in that: comprises an organic matter detection sensor and an outer cover shell (16) sleeved outside the organic matter detection sensor; wherein the organic matter detection sensor comprises a light source component capable of emitting ultraviolet rays and a detection component matched with the light source component and capable of detecting the organic matter content in water, and the light source component comprises
A light-emitting lamp (1) capable of emitting at least 185nm to 400nm ultraviolet rays;
a transparent prism (2) for wavelength-splitting ultraviolet rays emitted from the light-emitting lamp (1);
a rear diaphragm (3) arranged behind the transparent prism (2), wherein a rear light transmission slit (31) is arranged on the rear diaphragm (3);
the driving mechanism (21) is connected with the transparent triple prism (2) and is used for driving the transparent triple prism (2) to rotate so that ultraviolet rays which penetrate through the transparent triple prism (2) and are divided into different wavelengths respectively penetrate through the rear light transmission gaps (31) on the rear diaphragm (3);
the detection assembly comprises
A detection tube (4) which can be penetrated by ultraviolet rays penetrating through a rear light-transmitting slit (31) on the rear diaphragm (3), and through which water can pass through the detection tube (4);
an ultraviolet receiver (5) for detecting the intensity of ultraviolet rays emitted from the rear light-transmitting slit (31) of the rear diaphragm (3) and penetrating the detection tube (4);
the circuit board (6), the ultraviolet receiver (5) is connected with the circuit board (6), the circuit board (6) is used for calculating the content of different organic matters in the water passing through the detection tube (4) according to the intensity of the ultraviolet rays received by the ultraviolet receiver (5);
a wavelength detection device (14) for detecting the wavelength of ultraviolet light passing through the detection tube (4), the wavelength detection device (14) also being connected to the circuit board (6);
the control group ultraviolet receiver (15) is arranged behind the light path of the rear light transmission slit (31) of the rear diaphragm (3), and the control group ultraviolet receiver (15) is also connected with the circuit board (6);
the handheld organic matter detection terminal comprises the following detection steps:
step (1), pre-storing an absorption degree comparison table of different organic matters to ultraviolet rays with different wavelengths in a circuit board (6);
step (2), vacuumizing the detection tube (4), or keeping the detection tube (4) full of air, or flushing pure water in the detection tube (4), then starting the light-emitting lamp (1), driving the transparent triple prism (2) to rotate by the driving mechanism (21), so that the transparent triple prism (2) is divided into ultraviolet rays with different wavelengths, the ultraviolet rays respectively penetrate through the rear light transmission slits (31) on the rear diaphragm (3), then penetrate through the detection tube (4), the wavelength of the ultraviolet rays penetrating through the detection tube (4) is recorded through the wavelength detection device (14), meanwhile, the ultraviolet intensity values received by the ultraviolet ray receiver (5) are recorded under the condition of different ultraviolet wavelength by the circuit board (6), and the ultraviolet intensity values are recorded as first ultraviolet intensity reference values; meanwhile, the circuit board (6) records the ultraviolet intensity values received by the ultraviolet receiver (15) of the comparison group under the condition of different ultraviolet wavelengths, and the ultraviolet intensity values are recorded as second ultraviolet intensity reference values;
step (3), keep the luminescent lamp (1) on, will await measuring the water and flow through the said checkout tube (4), drive the transparent prism (2) to rotate through the driving mechanism (21), thus divide the transparent prism (2) into the ultraviolet ray of different wavelength and pass the back light slit (31) on the back diaphragm (3) separately, then penetrate the checkout tube (4) again, record the wavelength of ultraviolet ray which passes the checkout tube (4) through the wavelength detection apparatus (14), at this moment the circuit board (6) records under different ultraviolet wavelength, the ultraviolet ray intensity value that the ultraviolet ray receiver (15) of the control group received, then record these ultraviolet ray intensity values as the reference value of the temporary ultraviolet ray intensity, divide the reference value of the temporary ultraviolet ray intensity under the different ultraviolet ray wavelength by the reference value of the second ultraviolet ray intensity under the corresponding ultraviolet ray wavelength, obtain the light source intensity attenuation proportion under the different ultraviolet ray wavelength; the circuit board (6) records the ultraviolet intensity values received by the ultraviolet receiver (5) under different ultraviolet wavelengths simultaneously, marks the ultraviolet intensity values as ultraviolet intensity detection values, divides the ultraviolet intensity detection values under different ultraviolet wavelengths by the light source intensity attenuation proportion under the corresponding ultraviolet wavelengths to obtain ultraviolet intensity search values under different ultraviolet wavelengths, and then compares the ultraviolet intensity search values with the first ultraviolet intensity reference value under the corresponding ultraviolet wavelengths in the step (2) to obtain the ultraviolet absorption degree of different organic matters under the ultraviolet rays with different wavelengths; and (3) obtaining the content of different organic matters in the water by inquiring the pre-stored absorption degree comparison table in the step (1).
2. The handheld organic matter detection terminal of claim 1, wherein: the light source assembly further comprises a front diaphragm (7) arranged between the light-emitting lamp (1) and the transparent triple prism (2), and a front light-transmitting slit (71) is formed in the front diaphragm (7).
3. The handheld organic matter detection terminal of claim 1, wherein: the light source assembly further comprises a base (8) used for bearing the transparent triangular prism (2), the driving mechanism (21) is connected with the base (8), a zero position detection switch (9) is arranged beside the base (8), and the zero position detection switch (9) is also connected with the driving mechanism (21).
4. The handheld organic matter detection terminal of claim 1, wherein: the device also comprises a shell (10), wherein a detection tube accommodating cavity is formed in the shell (10), and the detection tube (4) is arranged in the detection tube accommodating cavity; the light source component and the ultraviolet receiver (5) are respectively arranged on two opposite sides of the detection tube (4).
5. The handheld organic matter detection terminal of claim 4, wherein: the shell (10) is connected with a water inlet joint (11) and a water outlet joint (12) which are respectively communicated with two ends of the detection tube (4).
6. The handheld organic matter detection terminal of claim 5, wherein: the water inlet joint (11) and the water outlet joint (12) are provided with sealing rings (13) at the connection parts of the two ends of the detection tube (4).
7. The handheld organic matter detection terminal according to any one of claims 1 to 6, wherein: the outer cover shell (16) is provided with a display screen (17) connected with the circuit board (6).
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| CN201710195756.XA CN107340253B (en) | 2017-03-29 | 2017-03-29 | Handheld organic matter detection terminal and detection method thereof |
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| CN201710195756.XA CN107340253B (en) | 2017-03-29 | 2017-03-29 | Handheld organic matter detection terminal and detection method thereof |
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| CN107340253B true CN107340253B (en) | 2024-01-16 |
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| CN202547778U (en) * | 2012-04-17 | 2012-11-21 | 深圳迈瑞生物医疗电子股份有限公司 | Grating spectrophotometer and biochemical analyzer adopting same |
| CN205861532U (en) * | 2016-08-10 | 2017-01-04 | 泉州市美邦仪器有限公司 | Full-automatic formaldehyde tester |
| CN207263628U (en) * | 2017-03-29 | 2018-04-20 | 宁波方太厨具有限公司 | Hand-held organic matter detection terminal |
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| CN107340253A (en) | 2017-11-10 |
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