CN216978818U

CN216978818U - Portable multichannel side-lighting type detection instrument for absorbance of enzyme-labeled strip sample liquid

Info

Publication number: CN216978818U
Application number: CN202122986619.2U
Authority: CN
Inventors: 唐文志; 祁杨春; 李忠宏; 王建龙; 王新
Original assignee: Northwest A&F University
Current assignee: Northwest A&F University
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-07-15
Anticipated expiration: 2031-12-01

Abstract

The utility model provides a portable multi-channel side-illuminated enzyme label sample liquid absorbance detection instrument which comprises a base (1), wherein an enzyme label absorbance detection module is arranged on the base (1), the enzyme label absorbance detection module is formed by arranging a plurality of groups of single shells side by side, each single shell comprises two mounting walls (2) correspondingly arranged on the base (1), a cavity formed by the base (1) and the two mounting walls (2) is a detection chamber (3) for placing an enzyme label, the two mounting walls (2) are provided with corresponding light through holes (8), and the side wall of each mounting wall (2) is provided with a first fixing cap (4) or a second fixing cap (5) at the position where the light through hole (8) is arranged. The utility model can be used for measuring a plurality of samples and/or a plurality of indexes at one time so as to improve the detection efficiency, and has the advantages of convenient carrying, low price and simple operation.

Description

Portable multichannel side-lighting type detection instrument for absorbance of enzyme-labeled strip sample liquid

Technical Field

The utility model relates to the field of rapid detection, in particular to a portable multi-channel side-illuminated detection instrument for absorbance of enzyme label strip sample liquid.

Background

The spectrophotometry method is a method for measuring the absorbance of a sample solution after color reaction at a specific wavelength and quantitatively detecting the content of a detected object in a sample, has the advantages of simple operation, low cost, high analysis speed and the like, and has wide application prospect in the fields of medical diagnosis, environmental monitoring, agricultural production activities, process control of food production, product safety detection and the like. In order to better meet the analysis requirements in these fields, the existing chromogenic sample solution absorbance measuring instrument needs to solve two disadvantages:

first, the number of samples per measurement may be more than 1. In addition, to ensure the reliability of the detection result, it is usually necessary to repeat the measurement for the same sample for several times, for example, to detect 3 parallel samples. However, the conventional spectrophotometer can measure only 1 sample 1 time, resulting in a double increase in the detection workload. The enzyme label strip can be filled with a plurality of sample liquids at one time, for example, the 8-hole enzyme label strip can be filled with 8 samples to be detected, the enzyme label strip is put into an enzyme label plate, then the absorbance is read by using an enzyme label instrument, and a plurality of samples can be detected by one-time sample injection. However, such instruments are complex in structure, large in size and weight, inconvenient to carry, and expensive, and also require a computer and software to operate and control the instruments, and the application range is usually limited to laboratory analysis, and cannot meet the increasing demand of rapid field detection.

Secondly, many samples are tested by measuring multiple indicators. For example, in wine production, the content of components such as iron ions, methanol, polyphenol and the like needs to be detected, and the content of components such as lead, mercury, cadmium, nitrate, nitrite and the like in food is limited by the pollutant limit in food safety national standard food (GB 2762-2017). The plasma concentration of calcium and magnesium in blood can be used for diagnosing diseases. The contents of ammonia nitrogen, nitrite, phosphorus and the like in water need to be controlled in the aquaculture process. Although all the components can be detected by using a spectrophotometry method, the detection wavelengths are different, the instrument can only be used for independently measuring 1 index each time, and parameters such as the detection wavelength and the like need to be reset before the next 1 index is detected, so that the whole detection process is complicated and tedious.

Therefore, the main problem that hinders the application of spectrophotometry in various industries is the lack of economical and portable multi-channel absorbance detection instruments.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a portable multi-channel side-illuminated enzyme label sample solution absorbance detection instrument. The utility model can be used for measuring multiple samples and/or multiple indexes at one time so as to improve the detection efficiency, and has the advantages of convenient carrying, low price and simple operation.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

a portable detecting instrument of multichannel side-illuminated enzyme label sample liquid absorbance is characterized in that: including the base, set up enzyme label absorbance detection module on the base, enzyme label absorbance detection module is set up by multiunit single casing side by side, and single casing is including corresponding two installation walls that set up on the base, and the cavity that base and two installation walls constitute is the detection room, can supply to place the enzyme label, sets up corresponding logical unthreaded hole on two installation walls, and the position that the installation wall set up logical unthreaded hole is provided with first locking cap or second locking cap.

Further: the first fixing cap is provided with a first mounting groove, and a light source lamp bead or a photosensitive diode can be mounted on the first mounting groove; and a second mounting groove is formed in the second fixing cap, and a photoresistor can be mounted on the second mounting groove.

Further: and the second fixing cap is provided with a pin wire hole for the pin of the photoresistor to pass through.

Further: a plurality of first pin wire grooves matched with the single shell are formed in the base, and the first pin wire grooves and the light through holes are arranged in the same direction.

Further: the groove wall of the first mounting groove is provided with a second pin wire groove, the groove wall of the second mounting groove is provided with a third pin wire groove, and the second pin wire groove and the third pin wire groove are both communicated with the corresponding first pin wire grooves.

Further: the multiple groups of single shells are sequentially arranged on the base in a clinging manner.

Further: the first fixing caps can be arranged in a plurality of modes, and the first fixing caps are sequentially connected through the first connecting piece.

Further: the second locking cap can be provided with a plurality of, and a plurality of second locking caps connect gradually through the second connecting piece.

Further: the absorbance detection module is positioned on the upper surface of the shell of the portable detection instrument.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. the utility model provides an enzyme labeling strip absorbance detection module which is resistant to ambient light interference, simple in structure, light in weight, small in size and convenient to use. The enzyme label strip absorbance detection module can resist the interference of ambient light and is directly exposed to the ambient light for use, so the enzyme label strip absorbance detection module provided by the utility model can be positioned on the outer surface of an instrument, an additional closed sample bin is not needed, a movable sample injection part is also saved, and the advantages can simplify the structure of the optical detection module, reduce the volume and lighten the weight. The elimination of moving parts also helps to reduce the failure rate of the instrument. In addition, different from the mode that detection light rays vertically penetrate through an enzyme label strip adopted by a traditional enzyme labeling instrument, the enzyme labeling instrument adopts a side illumination mode, namely a light source and a photosensitive sensor are positioned at two sides of the enzyme label strip, and the detection light rays horizontally penetrate through the enzyme label strip, so that a shielding object does not exist above the enzyme label strip, and an enzyme label strip absorbance detection module is positioned on the upper surface of the instrument instead of a closed detection bin, so that an operator can conveniently put or take the enzyme label strip into or out of the instrument, and the enzyme labeling instrument is very convenient to use.

2. The portable and economical detection instrument meets the requirements of field detection. The enzyme label absorbance detection module has the advantages of simple structure, light weight and small volume, can simplify the structure of the instrument, reduces the consumption of raw materials and energy in the manufacturing process of the instrument, is beneficial to reducing the manufacturing cost, saving resources, saving energy and reducing emission, can reduce the volume and weight of the instrument, provides an instrument with more economy and portability, and better meets the field detection requirements of basic users.

3. The design scheme of the multi-channel enzyme standard strip absorbance detection module meets different detection requirements. The enzyme label absorbance detection module comprises a group of single shells, and detection light sources of all the monomers are mutually independent. Therefore, the number of channels and the detection wavelength of the instrument can be conveniently designed. Only need the quantity of single casing in the change design or replace the light source lamp pearl in the first fixed cap can. Therefore, the enzyme label absorbance detection module structure provides a general scheme for the design and manufacture of multi-channel instruments with different requirements, can conveniently design and develop multi-channel detection instruments corresponding to different detection objects, and greatly reduces the development and manufacturing cost of the products.

4. The absorbance of a conventional sample solution is detected in a closed sample chamber, and a single measurement needs 7 steps: opening the bin cover; putting a sample; closing the bin cover; measuring; opening the bin cover; taking out the sample; the bin cover is closed. When the utility model is used for detection, the enzyme label strip absorbance detection module is positioned on the upper surface of the instrument, and only 3 steps of putting a sample, measuring and taking out the sample are needed for single measurement, so that one-time detection can be completed, and the operation steps are reduced by more than 50% compared with the operation steps in the prior art. Secondly, the sample is multi-channel, and can be injected once to measure a plurality of samples. In contrast, the existing spectrophotometer is a single channel, and only 1 sample can be measured 1 time, so that the efficiency is low.

Drawings

FIG. 1 is a schematic view of the construction of a single housing of the present invention;

FIG. 2 is a schematic structural diagram of an enzyme-labeled strip absorbance detection module according to one embodiment of the utility model;

FIG. 3 is a schematic structural diagram of an enzyme-labeled strip absorbance detection module in the third embodiment of the utility model;

FIG. 4 is a schematic structural diagram of an enzyme-labeled strip absorbance detection module in the fourth embodiment of the utility model;

FIG. 5 is a schematic structural view of a second locking cap of the present invention;

FIG. 6 is a schematic structural view of a second locking cap according to a second embodiment of the present invention;

FIG. 7 is a schematic structural view of a second locking cap according to a third embodiment of the present invention;

FIG. 8 is a schematic view of the first locking cap of the present invention;

FIG. 9 is a schematic structural view of a first fixing cap according to a second embodiment of the present invention;

FIG. 10 is a schematic structural view of a first fixing cap according to a third embodiment of the present invention;

FIG. 11 is a schematic view of the assembly of a light source lamp bead and a photoresistor;

FIG. 12 is a schematic view of the assembly of a light source lamp bead and a photodiode;

FIG. 13 is a data plot of the effect of ambient light on the detection performance of the detection instrument of the present invention;

FIG. 14 is a graph comparing the results of measuring iron ions by the detecting instrument of the present invention and a professional instrument;

FIG. 15 is a graph comparing the results of methanol measurements using the test device of the present invention with those of a professional device;

FIG. 16 is a graph comparing the results of polyphenol measurement using the measuring instrument of the present invention and a professional instrument.

Reference numerals are as follows: 1-a base; 2, installing a wall surface; 3-a detection chamber; 4-a first locking cap; 5-a second locking cap; 6-a first mounting groove; 7-a second mounting groove; 8-light through hole; 9-pin hole aperture; 10-a first pin wire chase; 11-a second pin wire chase; 12-a third pin wire chase; 13-a first connector; 14-a second connector; 15-light source lamp beads; 16-a photodiode; 17-photoresistor.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with the specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the present invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the utility model.

The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.

As shown in figures 1 to 12, a portable detecting instrument of multichannel side illumination formula ELIAS label appearance liquid absorbance, including base 1, set up ELIAS label absorbance detection module on the base 1, ELIAS label absorbance detection module sets up by multiunit single casing side by side, single casing includes two installation walls 2 of vertical correspondence setting on base 1, the cavity that base 1 and two installation walls 2 constitute is detection chamber 3, detection chamber 3 is cylindrical cavity, can supply to place the enzyme label, set up corresponding logical unthreaded hole 8 on two installation walls 2, the position that installation wall 2 set up logical unthreaded hole 8 is provided with first locking cap 4 or second locking cap 5. All seted up the locking cap mounting groove on two installation walls 2, locking cap mounting groove and first locking cap 4 or the 5 phase-matchs of second locking cap, and first locking cap 4 and second locking cap 5 are the setting of cylinder type. A multi-channel detection control module is arranged in a shell of the portable detection instrument, and the first pin wire slot 10 is used for communicating the multi-channel detection control module in the instrument.

The absorbance detection module is positioned on the upper surface of the shell of the portable detection instrument.

The multiple groups of single shells are arranged side by side along the length direction of the base 1, and the light through hole axis of each single shell is perpendicular to the length of the base.

The top of the detection chamber 3 is directly connected with the outside, and when the enzyme label strip is placed, the enzyme label strip is directly placed into the detection chamber 3 from the top. A gap with a certain distance is formed between the two mounting wall surfaces 2, so that the enzyme label strip can be conveniently taken out after the detection is finished.

The multichannel detection control circuit module comprises a battery, a charge-discharge control circuit board, an analog-digital conversion chip, a single chip microcomputer and a display screen, is used for providing a power supply for the operation of an instrument and is responsible for the signal acquisition and conversion of a photosensitive sensor, calculates the change of light intensity by using the Lambert beer law, obtains the absorbance value of sample liquid and outputs a detection result.

A first mounting groove 6 is formed in the first fixing cap 4, and a light source lamp bead 15 or a photosensitive diode 16 can be mounted on the first mounting groove 6.

The second fixing cap 5 is provided with a second mounting groove 7, and the second mounting groove 7 can be provided with a photoresistor 17.

The diameter size of the light through hole 8 is consistent with or close to the size of the light source lamp bead 15.

The detection light emitted by the light source lamp bead 15 enters the detection chamber 3 after passing through the light-passing hole 8, enters the small empty cup of the enzyme label strip from the side surface, is partially absorbed by the sample liquid in the enzyme-labeled hole, penetrates out of the light-passing hole 8 of the other side installation wall surface 2, and is received by the photosensitive diode 16 or the photosensitive resistor 17.

The enzyme label strip absorbance detection module is composed of 2-8 groups of single shells arranged side by side, 2-8 first fixing caps 4 and 2-8 second fixing caps 5, and is used for simultaneously measuring sample liquid in a plurality of enzyme label strip small pore cups to realize multi-channel detection.

The second fixing cap 5 is provided with a pin wire hole 9 for a pin of the photoresistor 17 to pass through.

A plurality of first pin wire grooves 10 matched with the single shell are formed in the base 1, and the first pin wire grooves 10 and the light through holes 8 are arranged in the same direction.

A second pin wire groove 11 is formed in the wall of the first mounting groove 6, the second pin wire groove 11 is used for leading out a pin wire of a light source lamp bead 15 or a photosensitive diode 16, and the bent pin wire of the light source lamp bead 15 or the photosensitive diode 16 passes through the second pin wire groove 11 and the first pin wire groove 10 in the base 1 and is connected with a multi-channel detection control module in the instrument; and a third pin wire slot 12 is formed in the wall of the second mounting groove 7, the third pin wire slot 12 is used for leading out pin wires of the photosensitive resistor 17, two pin wires of the photosensitive resistor 17 respectively pass through the pin wire holes 9 and are bent, and the bent pin wires pass through the third pin wire slot 12 and the first pin wire slot 10 and are connected with a multi-channel detection control module in the instrument.

The light source bulbs 15 in the first fixing caps 4 can be light sources with the same wavelength and are used for measuring a plurality of parallel samples. The light source bulbs 15 installed in the first fixing caps 4 can also use light sources with different wavelengths for simultaneous determination of different indexes in a measured object.

And the second pin wire slot 11 and the third pin wire slot 12 are communicated with the first pin wire slot 10.

The multiple groups of single shells are sequentially arranged on the base 1 in a clinging manner, and the multiple groups of single shells and the base 1 are integrally formed.

The number of the first fixing caps 4 can be multiple, and the multiple first fixing caps 4 are connected in sequence through the first connecting pieces 13; the second fixing cap 5 may be provided in plurality, and the plurality of second fixing caps 5 are connected in sequence by the second connecting member 14.

A multi-channel detection control module is arranged in a shell of the portable detection instrument, and the first pin wire slot 10 is used for communicating the multi-channel detection control module in the portable detection instrument.

When the light sensitive diode 16 is used to detect the change of the transmitted light intensity, as shown in fig. 12, the first fixing caps 4 are respectively installed on the side walls of the two installation wall surfaces 2, and the light source lamp beads 15 and the light sensitive diode 16 are respectively installed on the two first fixing caps 4. Alternatively, a photo-resistor 17 is used to detect the change of the transmitted light intensity, as shown in fig. 11, a first fixing cap 4 and a second fixing cap 5 are respectively installed on the side walls of the two installation walls 2, the first fixing cap 4 is installed with the light source lamp bead 15, and the second fixing cap 5 is installed with the photo-resistor 17.

The operation of the utility model for detecting the absorbance of the sample is as follows:

1. preparing a developing sample solution to be tested. The specific steps are according to the national standard detection method, the industry standard detection method or the instruction of the detection kit of the detected object. Then, 200. mu.l of the solution to be tested was added to the wells of the enzyme label strip.

2. And placing the enzyme label strip filled with the blank sample into the detection chamber 3 and blanking.

3. And placing the enzyme label strip containing the sample to be detected into the detection chamber 3, and reading the absorbance value of each channel from the display screen. If there are multiple sets of samples to be tested, only step 3 needs to be repeated.

Fig. 13 shows data of the effect of the change of the ambient light intensity on the detection result of the apparatus, which is obtained by using the apparatus of the present invention to detect an absorbance sample under dark ambient light conditions and changing the ambient light intensity by turning off and on the light. As can be seen from FIG. 13, the influence of the brightness change of the ambient light on the detection result is not significant, which indicates that the multi-channel enzyme label strip absorbance detection module disclosed by the utility model can directly work in the presence of ambient light.

FIGS. 14-16 are graphs comparing the results obtained by measuring different components (iron, methanol and polyphenols) in the same sample using the apparatus of the present invention and a standard apparatus (spectrophotometer), respectively. As can be seen from FIGS. 14-16, there is a very significant linear relationship (R) between the results obtained with the two instruments²Both 0.99) and the slopes of the curves range from 0.9629 to 1.0307, both being close to 1, indicating that the results of the products measured by the two instruments are substantially identical, and that the instrument of the utility model has comparable detection performance to the standard instrument.

The first embodiment is as follows:

an enzyme label strip absorbance detection module shown in FIG. 2 is used; 3 second fixing caps 5 shown in FIG. 5 are used, and a photoresistor 17 is installed on the second fixing caps 5; 3 second fixing caps 5 shown in FIG. 8 are used, and the light source lamp beads 15 are LED lamp beads with wavelengths of 508nm, 575nm and 750nm respectively.

The multi-channel detection control circuit module comprises a lithium ion rechargeable battery, a charge-discharge control circuit board, an ADS1115 analog-to-digital converter, an STC89C52 single chip microcomputer and an LCD1602 liquid crystal screen. The enzyme label absorbance detection module is arranged on the upper surface of the instrument shell through the base 1, and other parts are arranged inside the instrument shell. The enzyme label strip absorbance detection module is provided with 3 groups of single shells and can be used for simultaneously measuring iron, methanol and polyphenol in wine.

The application method of the embodiment is as follows:

1. and preparing a solution to be detected. The measurement of iron, methanol and polyphenol is carried out by preparing samples to be measured according to the colorimetric method (OIV-MA-AS322-05B, OIV-MA-AS312-03B, OIV-MA-AS2-11) described in OIV International grape wine and grape juice analysis methods. Then, 200 microliters of the solution to be detected is respectively taken and added into the holes of the enzyme label strips.

2. And blank background is deducted. The instrument of the utility model is used for measuring the value of the enzyme label strip filled with blank sample solution without iron, methanol and polyphenol, and the background values of the reagent, the solution and the enzyme label strip are deducted.

3. And (3) placing the enzyme-labeled strip containing the sample to be detected into an instrument, reading the absorbance value of each channel from a display screen, and then taking out the sample. If a plurality of groups of samples need to be measured, the plurality of groups of samples are operated according to the operation step 3.

Example two:

1 of the 3-way second fixing caps 5 shown in FIG. 6 and 1 of the 3-way first fixing caps 4 shown in FIG. 9 were used, as in embodiment example 1.

Example three:

the enzyme-labeled strip absorbance detection module shown in fig. 3 is used, and 1 second fixing cap 5 shown in fig. 7 and 1 first fixing cap 4 shown in fig. 10 are used. The light source is 4 LED lamp pearls of 450nm, installs photo resistance 17 on the second locking cap 5.

The multi-channel detection control circuit module comprises a lithium ion rechargeable battery, a charge-discharge control circuit board, an ADS1115 analog-to-digital converter, an STC89C52 single chip microcomputer and an LCD1602 liquid crystal screen. The enzyme label absorbance detection module is arranged on the upper surface of the instrument shell through the base 1, and other parts are arranged in the instrument shell. The enzyme label strip absorbance detection module is provided with 3 groups of single shells, and can detect samples in 4 enzyme-labeled holes at one time for the analysis of enzyme-linked immunosorbent assay sample liquid.

The method of use of this example is as follows:

1. and preparing a color developing solution. The aflatoxin B1 enzyme linked immunosorbent assay kit produced by Shenzhen Fender biotechnology Limited is used for preparing a sample solution to be detected according to the kit specification.

2. And (6) detecting a blank sample. And (4) measuring a sample liquid containing 0 aflatoxin B1, and subtracting a blank.

Example four:

the enzyme label absorbance detection module shown in FIG. 4 is used, and 8 second fixing caps 5 shown in FIG. 5 and 8 first fixing caps 4 shown in FIG. 8 are used. The light source is 8 LED lamp pearls of 450nm, installs photo resistance 17 on the second locking cap 5.

The multi-channel detection control circuit module comprises a lithium ion rechargeable battery, a charge-discharge control circuit board, 2 ADS1115 analog-to-digital converters, an STC89C52 single chip microcomputer and an LCD1602 liquid crystal screen. The enzyme label absorbance detection module is arranged on the upper surface of the instrument shell through the base 1, and other parts are arranged in the instrument shell. The enzyme label strip absorbance detection module is provided with 8 groups of single shells, and can detect samples in 8 enzyme-labeled holes at a time for the analysis of enzyme-linked immune sample liquid.

The application method of the embodiment is the same as that of the third embodiment.

Example five of the implementation:

the side walls of the two installation wall surfaces 2 are respectively provided with a

first fixing cap

4, 8 first fixing caps 4 shown in figure 8 are used for installing light sources, and the light sources are 8 LED lamp beads with the wavelength of 450 nm; 8 photodiodes are mounted using 8 first fixing caps 4 as shown in fig. 8.

The multi-channel detection control circuit module comprises a lithium ion rechargeable battery, a charge-discharge control circuit board, 2 ADS1115 analog-to-digital converters, an STC89C52 single chip microcomputer and an LCD1602 liquid crystal screen. The enzyme label absorbance detection module is arranged on the upper surface of the instrument shell through the base 1, and other parts are arranged in the instrument shell. The enzyme label strip absorbance detection module is provided with 8 groups of single shells, and samples in 8 enzyme-labeled holes can be detected at one time for analysis of enzyme-linked immunosorbent assay sample liquid.

According to the description and the drawings of the utility model, a portable multi-channel side-illuminated enzyme label sample solution absorbance detection instrument can be easily manufactured or used by a person skilled in the art, and can generate the positive effects recorded by the utility model.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims

1. A portable detecting instrument of multichannel side-illuminated enzyme label sample liquid absorbance is characterized in that: including base (1), set up enzyme label strip absorbance detection module on base (1), enzyme label strip absorbance detection module is set up side by the single casing of multiunit, single casing is including corresponding two installation wall (2) that set up on base (1), the cavity that base (1) and two installation wall (2) constitute is for detecting room (3), can supply to place enzyme label strip, set up corresponding logical unthreaded hole (8) on two installation wall (2), the position that installation wall (2) set up logical unthreaded hole (8) is provided with first locking cap (4) or second locking cap (5).

2. The portable multi-channel side-illuminated ELISA strip sample solution absorbance detection instrument according to claim 1, characterized in that: a first mounting groove (6) is formed in the first fixing cap (4), and a light source lamp bead (15) or a photosensitive diode (16) can be mounted in the first mounting groove (6); and a second mounting groove (7) is formed in the second fixing cap (5), and a photosensitive resistor (17) can be mounted on the second mounting groove (7).

3. The portable multi-channel side-illuminated ELISA strip sample solution absorbance detection instrument according to claim 1, characterized in that: the multiple groups of single shells are sequentially arranged on the base (1) in a clinging manner.

4. The portable multi-channel side-illuminated detection instrument for the absorbance of an enzyme-labeled strip sample solution as claimed in claim 1, characterized in that: the first fixing caps (4) can be arranged in a plurality of numbers, and the first fixing caps (4) are sequentially connected through first connecting pieces (13).

5. The portable multi-channel side-illuminated detection instrument for the absorbance of an enzyme-labeled strip sample solution as claimed in claim 1, characterized in that: the number of the second fixing caps (5) can be multiple, and the second fixing caps (5) are sequentially connected through second connecting pieces (14).

6. The portable multi-channel side-illuminated ELISA strip sample solution absorbance detection instrument according to claim 1, characterized in that: the absorbance detection module is positioned on the upper surface of the shell of the portable detection instrument.