Dual-light-source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor

Abstract

The utility model provides a dual-light-source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor, which solves the problem that turbidity particles can interfere with an ultraviolet absorption spectrum of nitrate nitrogen and influence the detection accuracy in the prior art. A dual-light-source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor comprises a detection cavity, and a light-emitting assembly and a receiving assembly are arranged on the two sides of the detection cavity; a deep ultraviolet light source emitter and a turbidity light source emitter are arranged in the light emitting assembly, a deep ultraviolet light source receiver and a turbidity light source receiver are arranged in the receiving assembly, the deep ultraviolet light source receiver is arranged opposite to the deep ultraviolet light source, and the turbidity light source receiver is arranged opposite to the turbidity light source. As the measurement result of the nitrate nitrogen is possibly interfered by the turbidity of the water body, the sensor can measure the turbidity of the water body firstly by integrating the turbidity light source and the receiver of the turbidity light source, and correspondingly compensate the measurement result of the nitrate nitrogen so as to reduce the interference of the turbidity on the measurement of the nitrate nitrogen.

Description

TECHNICAL FIELD

[0001] The utility model belongs to environmental detection technical field, concretely relates to a double light source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor. BACKGROUND

[0002] The deep ultraviolet miniature optical nitrate nitrogen turbidity sensor is a high-tech device for water quality monitoring, which measures the nitrate nitrogen content in water by deep ultraviolet light technology and is widely used in the fields of lake and reservoir, stream, underground water aquifer, nitrate increase and decrease change research, academic research, supervision and management and wetland management.

[0003] In the ultraviolet absorption spectrum, the turbidity particles can destroy the planarity of the nitrate nitrogen molecules, cause steric hindrance, break the conjugated system and reduce the nitrate nitrogen absorbance, thereby affecting the measurement result of the nitrate nitrogen. UTILITY MODEL CONTENT

[0004] The utility model provides a double light source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor, aims at solving the problem that the turbidity particles in the prior art can interfere with the ultraviolet absorption spectrum of the nitrate nitrogen and affect the detection accuracy.

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme that:

[0006] The utility model provides a double light source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor, which comprises a detection cavity, and a light emitting assembly and a receiving assembly are arranged on the two sides of the detection cavity.

[0007] The light emitting assembly is internally provided with a deep ultraviolet light source emitter and a turbidity light source emitter, the receiving assembly is internally provided with a deep ultraviolet light source receiver and a turbidity light source receiver, the deep ultraviolet light source receiver is arranged opposite to the deep ultraviolet light source, and the turbidity light source receiver is arranged opposite to the turbidity light source.

[0008] In the preferred scheme, the light emitting assembly is located below the receiving assembly.

[0009] In the preferred scheme, the light emitting assembly is internally provided with a deep ultraviolet light source light emitting channel and a turbidity light source light emitting channel, the deep ultraviolet light source emitter is located in the deep ultraviolet light source light emitting channel, and the turbidity light source emitter is located in the turbidity light source light emitting channel.

[0010] Based on the above scheme, by arranging independent light emitting channels for the deep ultraviolet light source and the turbidity light source, it can not only ensure that the light beams of the two light sources do not interfere with each other, but also allow accurate control of the light path, so that the light beams emitted by the light sources can accurately reach the receiving assembly, reduce the loss and scattering in the light path, and thereby improve the measurement accuracy.

[0011] Preferably, the emitting channels of the deep ultraviolet light source and the turbidity light source are both cylindrical grooves.

[0012] Preferably, a light circuit board is arranged in the emitting assembly, and the deep ultraviolet light source emitter and the deep ultraviolet light source emitter are both arranged on the light circuit board.

[0013] Based on the above scheme, fixing the deep ultraviolet light source emitter and the deep ultraviolet light source emitter on the light circuit board can improve the stability and reliability of the entire system and reduce the risk of misalignment or damage of the light source emitter caused by vibration or impact.

[0014] Preferably, the light circuit board abuts against the upper end faces of the deep ultraviolet light source emitting channel and the turbidity light source emitting channel.

[0015] Based on the above scheme, such arrangement enables the light circuit board to be in close contact with the emitting channels, which helps to ensure that the light source emitters are aligned with the corresponding emitting channels, thereby improving the alignment accuracy of the optical path.

[0016] Preferably, the lower end faces of the deep ultraviolet light source emitting channel and the turbidity light source emitting channel are both provided with light-transmitting lenses.

[0017] Preferably, the receiving assembly is provided with a deep ultraviolet light source receiving channel and a turbidity light source receiving channel, and the upper end faces of the deep ultraviolet light source receiving channel and the turbidity light source receiving channel are both provided with light-transmitting lenses.

[0018] Based on the above scheme, the light-transmitting lenses can help focus and shape the passing light, ensuring that the light reaches the receiver in the correct direction and shape, thereby improving the reception efficiency and measurement accuracy of the optical signal.

[0019] Preferably, the detecting assembly is further included, and the lower ends of the deep ultraviolet light source receiving channel and the turbidity light source receiving channel are connected to the detecting assembly.

[0020] Based on the above scheme, the optical signal received by the receiving channel needs to be converted into data for further processing and analysis, and the detecting assembly is responsible for processing these optical signals.

[0021] Preferably, the emitting assembly includes an upper shell, the detecting assembly includes a lower shell, the upper shell and the lower shell are connected through a connecting block, the connecting block is arranged away from the detecting cavity, and the upper shell and the lower shell are flush with the connecting block.

[0022] Based on the above scheme, the flush arrangement of the upper shell, the lower shell, and the connecting block helps to ensure the precise alignment of the emitting channels and the receiving channels, enhances the structural stability of the entire sensor, and ensures stable operation under various environmental conditions.

[0023] The utility model discloses the beneficial effect is:

[0024] The utility model provides a kind of double light source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor, the sensor is equipped with deep ultraviolet light source to measure the nitrate nitrogen content in water, while equipped with turbidity light source to measure the turbidity of water body.Due to the measurement result of nitrate nitrogen can be interfered by the turbidity of water body, the sensor is integrated turbidity light source and its receiver, can measure water body turbidity first, and the measurement result of nitrate nitrogen is compensated accordingly, to reduce the interference of turbidity to nitrate nitrogen measurement.The utility model makes that sensor can simultaneously accurately measure nitrate nitrogen and turbidity in water, effectively evaluates and corrects the error caused by turbidity, to significantly improve the accuracy of measurement result. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced to the drawings needed to be used in the embodiment, it should be understood that the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other related drawings according to these drawings.

[0026] Fig. 1 It is the structure first schematic view of a kind of double light source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor in the utility model.

[0027] Fig. 2 It is the structure cross-sectional view schematic view of a kind of double light source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor in the utility model.

[0028] Fig. 3 It is the structure second schematic view of a kind of double light source deep ultraviolet miniature optical nitrate nitrogen turbidity sensor in the utility model.

[0029] Mark explanation in drawing:

[0030] 1-detection cavity;2-emitting component;3-receiving component;4-deep ultraviolet light source emitter;5-turbidity light source emitter;6-deep ultraviolet light source light path;7-turbidity light source light path;8-optical circuit board;9-translucent lens;10-connection block. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] Example 1:

[0033] See Figs. 1-3 This embodiment provides a dual-source deep ultraviolet miniature optical nitrate turbidity sensor, including a detection cavity 1, on both sides of which are provided a light-emitting component 2 and a receiving component 3;

[0034] The light-emitting component 2 is provided with a deep ultraviolet light source emitter 4 and a turbidity light source emitter 5. The receiving component 3 is provided with a deep ultraviolet light source receiver and a turbidity light source receiver. The deep ultraviolet light source receiver is arranged opposite to the deep ultraviolet light source, and the turbidity light source receiver is arranged opposite to the turbidity light source.

[0035] The light-emitting component 2 is located below the receiving component 3.

[0036] Specifically, the light-emitting component 2 is located above the receiving component, and the light source of the emitting component emits light from top to bottom, which is received by the receiving component below.

[0037] The light-emitting component 2 is provided with a deep ultraviolet light source emitting channel 6 and a turbidity light source emitting channel 7. The deep ultraviolet light source emitter 4 is located in the deep ultraviolet light source emitting channel 6, and the turbidity light source emitter 5 is located in the turbidity light source emitting channel 7.

[0038] Specifically, inside the light-emitting component 2, the deep ultraviolet light source emitter 4 and the turbidity light source emitter 5 are located in their respective light-emitting channels, while the corresponding deep ultraviolet light source receivers and turbidity light source receivers are located in the receiving component 3, directly below their respective light source emitters. The lower end faces of the deep ultraviolet light source emission channel 6 and the turbidity light source emission channel 7 correspond to the upper end faces of the deep ultraviolet light source receiving channel and the turbidity light source receiving channel, ensuring that the light beam emitted by the light source emitter can directly reach the corresponding receiver.

[0039] The deep ultraviolet light source emission channel 6 and the turbidity light source emission channel 7 are both cylindrical grooves.

[0040] Furthermore, the light-emitting component 2 is provided with a light circuit board 8, and both the deep ultraviolet light source emitter 4 and the deep ultraviolet light source emitter 4 are disposed on the light circuit board 8.

[0041] Specifically, the light circuit board 8 is built into the interior of the light-emitting component 2. The deep ultraviolet light source emitter 4 and the turbidity light source emitter 5 on the light circuit board 8 are fixed on the light circuit board 8. The light circuit board 8 is fixed inside the upper housing of the light-emitting component 2 to ensure that the deep ultraviolet light source emitter 4 and the turbidity light source emitter 5 can stably emit light sources.

[0042] In addition, the light circuit board 8 abuts against the upper surface of the deep ultraviolet light source emitting channel 6 and the turbidity light source emitting channel 7.

[0043] Both the deep ultraviolet light source emitting channel 6 and the turbidity light source emitting channel 7 have light-transmitting lenses 9 on their lower end faces.

[0044] Specifically, the light circuit board 8 abuts against the upper surface of the deep ultraviolet light source emitting channel 6 and the turbidity light source emitting channel 7. The light circuit board 8 can be connected to the housing of the light-emitting component 2 by means of fasteners, screws or welding. In this embodiment, welding is used so that there is no obvious gap between the light circuit board 8 and the emitting channel, ensuring that the circuit board remains stable when it abuts against the upper surface of the emitting channel.

[0045] The receiving component 3 is provided with a deep ultraviolet light source receiving channel and a turbidity light source receiving channel, and the upper end surface of both the deep ultraviolet light source receiving channel and the turbidity light source receiving channel is provided with a light-transmitting lens 9.

[0046] Specifically, in the receiving component 3 of the dual-source deep ultraviolet miniature optical nitrate turbidity sensor, the deep ultraviolet light source receiving channel and the turbidity light source receiving channel are set as two independent channels, corresponding to the light signal reception of the deep ultraviolet light source and the turbidity light source, respectively. Both the deep ultraviolet light source receiving channel and the turbidity light source receiving channel are located directly below the deep ultraviolet light source emitter 4 and the turbidity light source emitter 5, in order to capture the light beam passing through the water sample. A light-transmitting lens 9 is installed on the upper end face of the deep ultraviolet light source receiving channel and the turbidity light source receiving channel, directly contacting the water sample, and the light-transmitting lens 9 is tightly connected to the upper end face of the receiving channel. Furthermore, a cleaning brush for cleaning the light-transmitting lens 9 is also provided inside the detection chamber 1.

[0047] The dual-source deep ultraviolet miniature optical nitrate turbidity sensor further includes a detection component, and the lower ends of the deep ultraviolet light source receiving channel and the turbidity light source receiving channel are connected to the detection component.

[0048] Specifically, the detection component converts the light signal captured by the receiving channel into an electrical signal. The deep ultraviolet light source receiving channel and the turbidity light source receiving channel are arranged vertically, and their lower ends are directly connected to the detection component, forming a straight light signal transmission path.

[0049] To ensure the integrity of the sensor, based on any of the above solutions, the light-emitting component 2 includes an upper housing, the detection component includes a lower housing, the upper housing and the lower housing are connected by a connecting block 10, the connecting block 10 is disposed away from the detection cavity 1, and both the upper housing and the lower housing are flush with the connecting block 10.

[0050] Specifically, the upper shell is located at the upper part of the sensor, and the lower shell is located at the lower part, and the two are connected through the connecting block 10 to form the detection cavity 1, and the connecting block 10 supports the upper shell and the lower shell in structure. The upper shell, the lower shell and the connecting block 10 are integrally formed, which ensures the stable connection between the two shells.

[0051] The utility model is further explained and described in combination with working principles as follows:

[0052] Firstly, the deep ultraviolet light source emitter 4 and the turbidity light source emitter 5 in the upper shell are activated to start emitting light of specific wavelengths. The emitted light is emitted from the light emitting assembly 2 in the upper shell and is emitted downward through the deep ultraviolet light source light emitting channel 6 and the turbidity light source light emitting channel 7. The light passes through the water sample from top to bottom, and in this process, the light interacts with nitrate nitrogen and turbidity particles in the water sample. The light after passing through the water sample continues to propagate and reaches the receiving assembly 3 in the lower shell. The light of the deep ultraviolet light source is received by the light transmission lens 9 of the deep ultraviolet light source receiving channel, and the light of the turbidity light source is received by the light transmission lens 9 of the turbidity light source receiving channel. The received light signal is transmitted to the photodetector through the light transmission lens 9 on the receiving assembly, and the photodetector converts the light signal into an electrical signal. The electrical signal is processed by the circuit in the detection assembly, including amplification, filtering and analog-to-digital conversion, etc., to extract useful information. The detection assembly compensates for the measurement error caused by the turbidity of the water body to improve the accuracy of nitrate nitrogen measurement.

[0053] The utility model is not limited to the above-mentioned optional implementation, and the schemes can be combined arbitrarily on the premise of not being contradictory to each other; anyone can derive other various forms of products under the inspiration of the utility model, but no matter any change in shape or structure, any technical scheme falling within the scope defined by the claims of the utility model falls within the protection scope of the utility model.

Claims

1. A dual light source deep ultraviolet micro-optical nitrate turbidity sensor characterized by: The detection cavity is provided with a light emitting assembly and a receiving assembly on two sides thereof; The light emitting assembly is provided with a deep ultraviolet light source emitter and a turbidity light source emitter, and the receiving assembly is provided with a deep ultraviolet light source receiver and a turbidity light source receiver.

2. A dual light source deep UV micro-optical nitrate turbidity sensor according to claim 1, characterized in that: The light emitting assembly is located below the receiving assembly.

3. The dual light source deep UV miniature optical nitrate turbidity sensor according to claim 1, wherein: The light emitting assembly is provided with a deep ultraviolet light source emitting channel and a turbidity light source emitting channel.

4. A dual light source deep UV miniature optical nitrate turbidity sensor according to claim 3, characterized in that: The deep ultraviolet light source emitting channel and the turbidity light source emitting channel are both cylindrical grooves.

5. A dual light source deep UV miniature optical nitrate turbidity sensor according to claim 4, characterized in that: The light emitting assembly is provided with a light circuit board, and the deep ultraviolet light source emitter and the turbidity light source emitter are both arranged on the light circuit board.

6. A dual light source deep UV miniature optical nitrate turbidity sensor according to claim 5, characterized in that: The light circuit board abuts against the upper end faces of the deep ultraviolet light source emitting channel and the turbidity light source emitting channel.

7. The dual light source deep UV miniature optical nitrate turbidity sensor according to claim 3, wherein: The lower end faces of the deep ultraviolet light source emitting channel and the turbidity light source emitting channel are both provided with light transmission lenses.

8. The dual light source deep UV miniature optical nitrate turbidity sensor according to claim 1, wherein: The receiving assembly is provided with a deep ultraviolet light source receiving channel and a turbidity light source receiving channel, and the upper end faces of the deep ultraviolet light source receiving channel and the turbidity light source receiving channel are both provided with light transmission lenses.

9. A dual light source deep UV miniature optical nitrate turbidity sensor according to claim 8, characterized in that: The detection assembly is connected to the lower ends of the deep ultraviolet light source receiving channel and the turbidity light source receiving channel.

10. The dual light source deep UV miniature optical nitrate turbidity sensor according to claim 9, wherein: The light emitting assembly comprises an upper shell, the detection assembly comprises a lower shell, the upper shell and the lower shell are connected through a connecting block, the connecting block is arranged away from the detection cavity, and the upper shell and the lower shell are flush with the connecting block.

Images