Turbidity detection device based on single sensor calibration

Abstract

The utility model provides a turbidity detection device based on single sensor calibration, which is characterized in that a calibration port is designed on a laser light source module of the turbidity detection device, one more light path is split through a beam splitter, and the light path enters a light source window II after being turned by two 90-degree reflector modules; the floating block does not block the second light source window when located at the bottommost end, the linear light path of the laser light source module enters the light trap through the first light source window without affecting the light path of the second light source window, and the light path of the second light source window directly enters the detection module, so that the numerical value change of the laser light source module can be detected. A data basis is provided for measurement deviation calibration caused by light source change; and after water quality detection and water inflow, the floating block floats to block the light source window II, so that turbidity detection of the detection module on the water body in the circulating groove is not influenced, and calibration and detection functions can be simultaneously realized by a single sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality analysis, in particular to a turbidity detection device based on single sensor calibration. Background Art

[0002] Turbidity is an optical property resulting from the interaction between light and suspended particles in water. Most commercially available water turbidity detection devices are based on this principle. A light emitting element emits light through a sample. If it encounters suspended particles, it changes direction and scatters. A light receiving element detects light scattered by particles in the water at a 90-degree angle to the incident light. The turbidity value is calculated from this scattered light.

[0003] However, if the light source in the current water turbidity measuring device is affected by internal or external factors, the light received and scattered by the suspended matter in the water sample to be measured will be weakened, resulting in a large deviation in the measurement result and inaccurate measurement results.

[0004] In view of the above-mentioned defects of the prior art, it is necessary to further improve the turbidity measuring device. Utility Model Content

[0005] In view of this, the utility model provides a turbidity detection device based on single sensor calibration, and aims at solving the problems of the prior art by designing a spectroscopic reflection light path for light source detection and calibration, thereby solving the existing technical problems.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A turbidity detection device based on single-sensor calibration includes a main body shell, wherein the main body shell wall is provided with a water inlet, a water outlet, a sewage outlet, a first light source window, a second light source window, a detection port, and a trap installation port, wherein the second light source window faces the detection port, and the first light source window faces the trap installation port. A flow slot is provided on the upper side of the main body shell through a cover plate pressing a sealing ring;

[0008] A partition is provided in the middle of the flow channel to divide the flow channel, and the partition is provided with a through hole facing the second light path of the light source window;

[0009] A detection module disposed on the detection port and located outside the flow channel;

[0010] A light trap is provided on the trap installation port and is located outside the flow slot;

[0011] A floating block partition is provided on the left side of the flow channel and covers the second light source window in the vertical direction. A second through hole facing the second light source window is provided on the wall of the floating block partition.

[0012] A floating block is movably arranged in the floating block partition. When the floating block is at the bottom, it does not block the second light source window. When the flow channel is filled with water, the floating block floats up and blocks the second light source window.

[0013] A laser light source module is provided on the first light source window and outside the flow slot. A calibration port is provided on the side of the front section of the laser light source module. A beam splitter is provided inside the laser light source module at the calibration port to divide the light path into two light paths: a straight path entering the flow slot and a vertical path entering the calibration port.

[0014] The starting point is set at the calibration port and the three sections of light path are changed in direction by two 90° reflector modules, and the end of the light path is set at the second light source window;

[0015] The detection module and the laser light source module are electrically connected to an external control system through wires.

[0016] Furthermore, the floating blocks are made of black light-absorbing material.

[0017] Furthermore, the inner wall of the main body shell, the surface of the partition, the inner wall of the laser light source module, the inner side of the 90° reflector module, and the inner wall of the light path are all provided with a light absorbing layer.

[0018] The beneficial effects of the present invention are:

[0019] The utility model designs a calibration port on the laser light source module of the turbidity detection device, divides an optical path into multiple light paths through a beam splitter, and then enters the light source window 2 after changing direction through two 90° reflector modules. Before starting to conduct water quality detection and water intake, the floating block does not block the light source window 2 when it is at the bottom. The straight optical path of the laser light source module itself enters the light trap through the light source window 1 and does not affect the light path of the light source window 2. The light path of the light source window 2 directly enters the detection module, which can detect the numerical changes of the laser light source module and provide data basis for calibrating the measurement deviation caused by the change of the light source; after the water quality detection and water intake, the floating block floats up to block the light source window 2, thereby not affecting the detection module's detection of the turbidity of the water body in the circulation tank, so that a single sensor can realize the calibration and detection functions at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a turbidity detection device based on single sensor calibration in the present invention;

[0021] Figure 2 This is a schematic diagram of the disassembly of the turbidity detection device based on single sensor calibration in the present invention.

[0022] The following are the descriptions of the reference numerals:

[0023] 1 is the main body shell, 2 is the water inlet, 3 is the water outlet, 4 is the sewage outlet, 5 is the light source window 1, 6 is the light source window 2, 7 is the detection port, 8 is the trap installation port, 9 is the cover plate, 10 is the sealing ring, 11 is the flow groove, 12 is the partition, 13 is the through hole, 14 is the detection module, 15 is the light trap, 16 is the floating block partition, 17 is the floating block, 18 is the laser light source module, 19 is the calibration port, 20 is the beam splitter, 21 is the 90° reflector module, 22 is the light path, and 23 is the through hole 2. DETAILED DESCRIPTION

[0024] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0025] The following describes the embodiments of the present disclosure through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0026] In order to realize the calibration and detection functions of a single sensor at the same time, the specific contents of the utility model are as follows.

[0027] Combine Figure 1 and Figure 2 As shown, the embodiment of the present invention is a turbidity detection device based on single sensor calibration. Importantly, it includes a main body shell 1. The wall of the main body shell 1 is provided with a water inlet 2, a water outlet 3, a sewage outlet 4, a light source window 1 5, a light source window 2 6, a detection port 7, and a trap installation port 8. The light source window 2 6 is opposite to the detection port 7, and the light source window 1 5 is opposite to the trap installation port 8. The upper side of the main body shell 1 is sealed with a flow slot 11 by a cover plate 9 pressing a sealing ring 10;

[0028] A partition 12 is provided in the middle of the flow slot 11 to divide the flow slot 11, and a through hole 13 facing the light path of the light source window 2 6 is provided on the partition 12;

[0029] A detection module 14 disposed on the detection port 7 and located outside the flow channel 11;

[0030] A light trap 15 is provided on the trap mounting port 8 and is located outside the flow slot 11;

[0031] A floating block partition 16 is provided on the left side of the flow channel 11 and covers the second light source window 6 in the vertical direction. A second through hole 23 is provided on the floating block partition wall 16 and faces the second light source window 6.

[0032] A floating block 17 is movably disposed within the floating block partition 16. When the floating block 17 is at the bottom, it does not block the second light source window 6. When the flow channel 11 is filled with water, the floating block 17 floats up and blocks the second light source window 6.

[0033] A laser light source module 18 is provided on the light source window 15 and outside the flow slot 11. A calibration port 19 is provided on the front side of the laser light source module 18. A beam splitter 20 is provided inside the laser light source module 18 at the calibration port 19 to split the light path into two light paths: a straight path entering the flow slot 11 and a vertical path entering the calibration port 19.

[0034] The starting point is set on the calibration port 19 and passes through the three sections of light path 22 after being changed in direction by two 90° reflector modules 21. The end of the light path 22 is set on the light source window 2 6;

[0035] The detection module 14 and the laser light source module 18 are electrically connected to the external control system through wires;

[0036] In this design, a calibration port 19 is provided on the laser light source module 18 of the turbidity detection device. A light path is split by the beam splitter 20, and then redirected by two 90° reflector modules 21 to enter the light source window 2 6. Before water quality detection begins, the floating block 17 is at the bottom and does not block the light source window 2 6. The straight light path of the laser light source module 18 passes through the light source window 1 5 and enters the light trap 15 without affecting the light path of the light source window 2 6. The light path of the light source window 2 6 directly enters the detection module 14, and can detect the value change of the laser light source module 18, providing a data basis for calibrating the measurement deviation caused by the change of the light source. After water quality detection begins, the floating block 17 floats up to block the light source window 2 6, thereby not affecting the turbidity detection of the water body in the flow tank 11 by the detection module 14. In this way, a single sensor can realize both calibration and detection functions.

[0037] It should be noted that the laser light source module 18, detection module 14, and light trap 15 here are all modules used in turbidity detection devices on the market. The same type of optical sensing turbidity detection modules can be applied to the design of this patent, and their structure and principles will not be described in detail here.

[0038] Preferably, the floating block 17 is made of a black light-absorbing material to reduce the influence of stray light from the second light source window 6 on the detection module 14 .

[0039] Preferably, the inner wall of the main shell 1, the surface of the partition 12, the inner wall of the laser light source module 18, the inner side of the 90° reflector module 21, and the inner wall of the light path 22 are all provided with a light absorbing layer, which can effectively reduce the interference of stray light on the detection module 14.

[0040] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention without creative work should be included in the scope of protection of the present invention.

Claims

1. A turbidity detection device based on single sensor calibration, characterized in that: The device comprises a main body shell, wherein a water inlet, a water outlet, a sewage outlet, a first light source window, a second light source window, a detection port, and a trap installation port are provided on the wall of the main body shell, wherein the second light source window faces the detection port, and the first light source window faces the trap installation port. A flow groove is provided on the upper side of the main body shell through a cover plate pressing a sealing ring; A partition is provided in the middle of the flow channel to divide the flow channel, and the partition is provided with a through hole facing the second light path of the light source window; A detection module disposed on the detection port and located outside the flow channel; A light trap is provided on the trap installation port and is located outside the flow slot; A floating block partition is provided on the left side of the flow channel and covers the second light source window in the vertical direction. A second through hole facing the second light source window is provided on the wall of the floating block partition. A floating block is movably arranged in the floating block partition. When the floating block is at the bottom, it does not block the second light source window. When the flow channel is filled with water, the floating block floats up and blocks the second light source window. A laser light source module is provided on the first light source window and outside the flow slot. A calibration port is provided on the side of the front section of the laser light source module. A beam splitter is provided inside the laser light source module at the calibration port to divide the light path into two light paths: a straight path entering the flow slot and a vertical path entering the calibration port. The starting point is set at the calibration port and the three sections of light path are changed in direction by two 90° reflector modules, and the end of the light path is set at the second light source window; The detection module and the laser light source module are electrically connected to an external control system through wires.

2. The turbidity detection device based on single sensor calibration according to claim 1, characterized in that: The floating blocks are made of black light-absorbing material.

3. The turbidity detection device based on single sensor calibration according to claim 1, characterized in that: The inner wall of the main body shell, the surface of the partition, the inner wall of the laser light source module, the inner side of the 90° reflector module, and the inner wall of the light path are all provided with a light absorbing layer.

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