CN217717507U

CN217717507U - Photochemical sensor built based on photoelectric semiconductor material

Info

Publication number: CN217717507U
Application number: CN202221863631.2U
Authority: CN
Inventors: 谭军; 辜清; 孙博文; 穆乃花; 王蓉
Original assignee: Sichuan Tianshengyuan Environmental Services Co ltd
Current assignee: Sichuan Tianshengyuan Environmental Services Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-01
Anticipated expiration: 2032-07-19

Abstract

The utility model provides a photochemical sensor built based on photoelectric semiconductor materials, which comprises a detection unit and a signal receiving unit, wherein the detection unit comprises a shading shell and a light-emitting diode (LED) light source, a sample placer, a photocell and a power supply which are arranged in the shading shell; the LED light source, the sample placer and the photocell are sequentially connected, the power supply is connected with the LED light source and supplies power to the LED light source, and the signal receiving unit is electrically connected with the photocell in the shading shell; the sample placer is a container with a cuboid structure, and the photocell is attached to the side wall of the sample placer, which is far away from one side of the LED light source. When water to be detected is mixed with a color reagent, the mixture is placed in the sample placer, an LED light source can be turned on after full reaction, and the light source irradiates a photocell after being absorbed by a solution in the placer; under the irradiation of light, the photocell emits corresponding electric signal, which is detected by the signal receiving unit.

Description

Photochemical sensor built based on photoelectric semiconductor material

Technical Field

The utility model belongs to the technical field of ammonia nitrogen detection sensor, concretely relates to build photochemical sensor based on photoelectric semiconductor material and improve.

Background

Ammonia nitrogen is a nutrient in water, can cause water eutrophication, is a main oxygen-consuming pollutant in water and is toxic to fish and some aquatic organisms. Therefore, the ammonia nitrogen is an indispensable monitoring and analyzing index in the surface water quality evaluation. At present, salicylic acid-hypochlorite spectrophotometry, titration, meteorological molecular absorption spectrometry, a nano reagent spectrophotometry and the like are mainly used for ammonia nitrogen; when water quality monitoring is carried out in remote areas, sampling and inspection time is prolonged, and deviation of water quality analysis results is large, so that the problems of water quality monitoring in remote mountainous areas cannot be solved well by the methods. A sensor for quickly detecting ammonia nitrogen in water quality aims to solve the problem that the deviation of a water quality analysis result is large due to the fact that the sampling inspection time of ammonia nitrogen in water quality in remote areas is prolonged in the background technology.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a build photochemical sensor based on photoelectric semiconductor material, can adapt to remote area quality of water witnessed inspections.

In order to realize the purpose of the utility model, the utility model adopts the technical proposal that: a photochemical sensor built based on a photoelectric semiconductor material comprises a detection unit and a signal receiving unit, wherein the detection unit comprises a shading shell, and an LED light source, a sample placer, a photocell and a power supply which are arranged in the shading shell; the LED light source, the sample placer and the photocell are sequentially connected, the power supply is connected with the LED light source and supplies power to the LED light source, and the signal receiving unit is electrically connected with the photocell in the shading shell; the sample placer is a container with a cuboid structure, and the photocell is attached to the side wall of the sample placer, which is far away from one side of the LED light source.

Preferably, the LED light source is coupled to one side of the sample placer, the photocell is coupled to the opposite side of the sample placer, and the three are located on the same horizontal straight line.

Preferably, the power source is a rechargeable lithium battery.

Preferably, the sample holder is a liquid container made of quartz glass, and the sample holder has a length of 1.5cm, a width of 1cm and a height of 2.5cm.

Preferably, the light-blocking housing is sized to be 5cm long and the LED light source and sample holder are spaced 5.5cm apart.

Preferably, the LED light source is a 410nmLED lamp and is arranged on one side of the bottom in the shading shell.

The utility model discloses following beneficial effect has: by using the sensor, after water to be detected is mixed with a color reagent, the mixture is placed in the sample placer, an LED light source can be turned on after full reaction, and the light source irradiates a photocell after being absorbed by a solution in the placer; under the irradiation of light, the photocell emits corresponding electric signals, and the signal receiving unit detects the signal values.

Drawings

Fig. 1 is a schematic structural view of the present invention; .

FIG. 2 is a schematic diagram of the operation of the present invention;

fig. 3 is a structural diagram of the sample placer of the present invention.

In the figure: 1. a light-shielding housing; 2. an LED light source 2; 3. a sample placer 3; 4. a photovoltaic cell 4; 5. a lithium battery 5; 6. a signal receiving unit 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, 2 and 3, the photochemical sensor built based on the photoelectric semiconductor material comprises a detection unit and a signal receiving unit 6, wherein a lithium battery 5, an LED light source 2, a specially-made sample placer 3, a photocell 4 and a light-shielding shell 1 for placing the above objects are arranged in the detection unit; the signal receiving unit 6 is an electric signal identification system; the detection is provided with a lithium battery 5 which can be charged repeatedly for normal use of the sensor.

The utility model particularly relates to a build ammonia nitrogen content in photochemical sensor detection water quality based on photoelectric semiconductor material, wherein contain the LED light source 2 of lithium cell 5, 410nm wavelength, sample placer 3, photocell 4, (photoelectric conversion device), signal receiving unit 6 is signal receiving device promptly, lithium cell 5, LED light source 2, sample placer 3, photocell 4 construct into a detecting element among the photochemical sensor to by the airtight box of lightproof material, shading shell 1 promptly. The device adopts the lithium battery 5 for power supply, can meet the requirements of a plurality of field quick detection, and has the advantages of low price of parts, easy replacement, simple operation, small volume, convenient carrying and good suitability for field detection of water quality in remote areas.

The wavelength of the LED light source 2 is determined according to the absorption wavelength of ammonia nitrogen in water after the ammonia nitrogen reacts with the color reagent.

The sample holder 3 is sized according to fig. 3, and is 1.5cm long, 1cm wide and 2.5cm high, and is made of quartz glass.

The photocell 4 utilizes the 'photo-generated electromotive force' effect to enable the photocell 4 to generate voltage at two ends under illumination, and when an external circuit is arranged, photocurrent is generated and is in direct proportion to the light intensity of incident light.

After the LED light intensity penetrates through the color developing solution in the special sample placer 3, the light intensity is weakened, and the electric signal identification system can measure the content of ammonia nitrogen in the water sample according to the signal value.

The utility model discloses among the chemical sensor, the specific wavelength LED lamp of being supplied power by lithium cell 5 and the coupling of 3 one sides of purpose-built sample placer, then photocell 4 and the opposite side coupling of this purpose-built sample placer 3, formulate three kinds of original papers into a detecting element through 2 times of couplings, at last through the wire, conduct the signal change in the photocell 4 to signal of telecommunication receiving arrangement.

The monitoring process of the existing chemical sensor is mainly as follows:

1. color development stage

The water sample to be detected is subjected to reaction with a color reagent 1:1, pouring the mixture into a specially-made sample placer 3 after being mixed well, and standing for 3 minutes;

2. testing phase

The LED light source 2 is turned on, and the light is absorbed by the developing solution in the sample holder 3 and received by the photocell 4, which generates a current signal.

3. Determination of ammonia nitrogen content

After the signal receiving unit 6 reads the light intensity signal of the water sample with unknown ammonia nitrogen concentration, the ammonia nitrogen content value can be obtained according to the marked line drawn by the corresponding light intensity signal value corresponding to the known concentration.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a build photochemical sensor based on photoelectric semiconductor material, includes detecting element and signal receiving unit, its characterized in that: the detection unit comprises a shading shell and an LED light source, a sample placer, a photocell and a power supply which are arranged in the shading shell; the LED light source, the sample placer and the photocell are sequentially connected, the power supply is connected with the LED light source and supplies power to the LED light source, and the signal receiving unit is electrically connected with the photocell in the shading shell; the sample placer is a container with a cuboid structure, and the photocell is attached to the side wall of the sample placer, which is far away from one side of the LED light source.

2. The construction of an optochemical sensor as defined in claim 1, wherein: the LED light source is coupled to one side of the sample placer, the photocell is coupled to the other side of the sample placer, and the LED light source, the photocell and the sample placer are located on the same horizontal straight line.

3. The construction of an optochemical sensor as defined in claim 1, wherein: the power supply is a rechargeable lithium battery.

4. The construction of an optochemical sensor as defined in claim 3, wherein: the sample placer is a liquid container made of quartz glass, and the size of the sample placer is 1.5cm long, 1cm wide and 2.5cm high.

5. The construction of an optical chemical sensor based on optoelectronic semiconductor material as recited in claim 4, wherein: the size of the shading shell is 5cm long, and the distance between the LED light source and the sample placer is 5.5cm.

6. The construction of an optochemical sensor as defined in claim 5, wherein: the LED light source is a 410nmLED lamp and is arranged on one side of the bottom in the shading shell.