CN211955216U

CN211955216U - Intelligent fluorescence method dissolved oxygen sensor

Info

Publication number: CN211955216U
Application number: CN201921964161.7U
Authority: CN
Inventors: 李庆铁
Original assignee: Shanghai Lanchang Automation Technology Co ltd
Current assignee: Shanghai Lanchang Automation Technology Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-11-17
Anticipated expiration: 2029-11-13

Abstract

The utility model provides an intelligent fluorescence method dissolved oxygen sensor, this sensor adopt the modularized design, including the casing and set up light source drive module, LED blue light source, oxygen sensor membrane, fluorescence receiving module, photoelectric detection module, MCU and the communication module in the casing, the bottom surface of aforementioned casing is equipped with optical glass, LED blue light source can shine to the oxygen sensor membrane and arouse fluorescence, fluorescence receiving module set up in fluorescence signal receiving side, photoelectric detection module sets up in the rear end of aforementioned fluorescence receiving module for detect fluorescence signal output to MCU, MCU's communication signal end and communication module are connected. The utility model discloses a dissolved oxygen sensor is equipped with communication module, can with host computer wireless communication, in time uploads the long-range real-time analysis of data confession, and is low to controlling personnel's requirement, and application scope is wide.

Description

Intelligent fluorescence method dissolved oxygen sensor

Technical Field

The utility model relates to a water treatment field, more specifically water pollution monitoring devices relates to an intelligent fluorescence method dissolved oxygen sensor.

Background

Water resources are basic resources in the nature, the global ecological environment is more and more greatly influenced by water resources, along with the increase of human activities, the development of agriculture and the progress of industrialization, a large amount of domestic wastewater, farmland water, industrial wastewater and the like are randomly discharged without being treated, and the water resources are greatly polluted and further lack of the water resources. Therefore, many countries adopt different measures to monitor and treat water pollution, wherein the dissolved oxygen value is an important index for monitoring water quality.

Dissolved oxygen is used as one of the comprehensive indexes for evaluating water quality and one of the important indexes for evaluating the organic pollution degree of water body, and at present, the research on the dissolved oxygen detection sensing technology is developed by means of combining electrochemistry and electronic science in the prior art, for example: iodometry, amperometry and fluorimetry. Among them, the fluorescence method is also generally called as a fluorescence quenching method, and since oxygen molecules cause a fluorescence quenching effect and the degree of fluorescence quenching is related to the concentration of oxygen molecules, it can be used for measurement of the oxygen concentration.

The existing dissolved oxygen sensor has a complex structure, is inconvenient for on-site monitoring, is generally monitored by monitoring personnel in a circulating way, is recorded on the site, is carried back to analyze after data acquisition is finished, cannot monitor and analyze in real time, has low validity, has certain technical requirements on detection personnel, and has higher equipment damage rate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide an intelligent fluorescence method dissolved oxygen sensor.

The technical scheme of the utility model is that:

the utility model provides an intelligent fluorescence method dissolved oxygen sensor, which adopts modular design and comprises a shell, a light source driving module, an LED blue light source, an oxygen sensor film, a fluorescence receiving module, a photoelectric detection module, an MCU and a communication module, wherein the light source driving module, the LED blue light source, the oxygen sensor film, the fluorescence receiving module, the photoelectric detection module, the MCU and the communication module are arranged in the shell, the bottom surface of the shell is provided with optical glass, an uplink control signal end of the light source driving module is connected with a corresponding control signal output end of the MCU, a downlink control signal output end of the light source driving module is connected with the LED blue light source and is used for exciting the LED blue light source, the LED blue light source can irradiate the oxygen sensor film to excite fluorescence, the oxygen sensor film is fixed on the outer surface of the optical glass, the fluorescence receiving module is arranged at a fluorescence signal, the detection signal output end of the photoelectric detection module is connected with the corresponding detection signal input end of the MCU, the communication signal end of the MCU is bidirectionally connected with the downlink communication signal end of the communication module, and the uplink communication signal end of the communication module can communicate with an upper computer.

Further, the communication module includes a 485 interface and a wireless communication unit, and the wireless communication unit adopts a Zigbee or bluetooth module.

Further, the fluorescence receiving module comprises a first optical lens and an optical filter, the first optical lens can receive the reflected fluorescence of the optical glass, and the optical filter is arranged between the first optical lens and the photoelectric detection module.

Furthermore, the optical glass and the oxygen sensor film attached on the optical glass are obliquely arranged.

Furthermore, the included angle between the optical glass and the oxygen sensor film and the vertical direction is 60-80 degrees.

Further, the sensor also comprises an LED red light source which is in the positive direction to the photoelectric detection module and is used for detecting the delay of the fluorescence signal.

Furthermore, a second optical lens for condensing light is arranged between the LED blue light source and the oxygen sensor film.

Furthermore, a telescopic rod is arranged at the top of the sensor; the telescopic rod is provided with a scale.

The utility model has the advantages that:

the utility model discloses an intelligent fluorescence method dissolved oxygen sensor is equipped with communication module, can with host computer wireless communication, in time upload data and supply long-range real-time analysis, and is low to controlling personnel's requirement, and application scope is wide.

The utility model discloses a dissolved oxygen sensor simple structure, portable, its top has the telescopic link, can measure the data of the different depth of detection in corresponding waters.

The dissolved oxygen sensor of the utility model is provided with two paths of LED light sources, and one path of blue light is used as a fluorescence excitation light source and irradiates on the sensing film; one path of red light is used as an auxiliary light source and directly irradiates on the photoelectric detector to detect the delay of a fluorescent signal in a circuit, so that the working effectiveness of the system is ensured.

The utility model discloses in, optical glass and paste the oxygen sensor membrane that applies on optical glass all to the slant setting that sets up, can effectively improve the fluorescence emission efficiency of sensing membrane, reduced the measurement interference that the bubble produced.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.

Fig. 1 shows a schematic block diagram of the present invention.

Fig. 2 shows a schematic block diagram of the device of the invention.

In the figure: 1. a housing; 2. a light source driving module; 3. an LED blue light source; 4. an oxygen sensor membrane; 5. a fluorescence receiving module; 6. a photoelectric detection module; 7. MCU; 8. a communication module; 9. an optical glass; 10. an LED red light source; 5-1, a first optical lens; 5-2, and a filter.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein.

An intelligent fluorescence method dissolved oxygen sensor adopts a modular design, and comprises a shell 1, a light source driving module 2, an LED blue light source 3, an oxygen sensor membrane 4, a fluorescence receiving module 5, a photoelectric detection module 6, an MCU7 and a communication module 8 which are arranged in the shell 1, wherein the bottom surface of the shell 1 is provided with optical glass 9, the uplink control signal end of the light source driving module 2 is connected with the corresponding control signal output end of the MCU7, the downlink control signal output end of the light source driving module 2 is connected with the LED blue light source 1 and is used for exciting the LED blue light source 1, the LED blue light source 1 can irradiate the oxygen sensor membrane 4 to excite fluorescence, the oxygen sensor membrane 4 is fixed on the outer surface of the optical glass 9, the fluorescence receiving module 5 is arranged at the fluorescence signal receiving side, and the photoelectric detection module 6 is arranged at the rear end of the fluorescence receiving module 5, the photoelectric detection module is used for detecting fluorescent signals, the detection signal output end of the photoelectric detection module 6 is connected with the corresponding detection signal input end of the MCU7, the communication signal end of the MCU7 is in two-way connection with the downlink communication signal end of the communication module 8, the uplink communication signal end of the communication module 8 can be communicated with an upper computer, data can be uploaded in time for remote real-time analysis, the requirement on control personnel is low, and the application range is wide.

Further, the communication module 8 includes a 485 interface and a wireless communication unit, and the wireless communication unit adopts a Zigbee or bluetooth module.

Further, the fluorescence receiving module 5 comprises a first optical lens 5-1 and an optical filter 5-2, the first optical lens 5-1 can receive the reflected fluorescence of the optical glass 9, and the optical filter 5-2 is arranged between the first optical lens 5-1 and the photoelectric detection module 6 to enhance the fluorescence receiving rate.

Furthermore, the optical glass 9 and the oxygen sensor film 4 pasted on the optical glass 9 are both obliquely arranged; the included angles between the optical glass 9 and the oxygen sensor film 4 and the vertical direction are 60-80 degrees; the fluorescence emission efficiency of the sensing film can be effectively improved, and the measurement interference generated by bubbles is reduced.

Further, the sensor also comprises an LED red light source 10, wherein the LED red light source 10 is over against the photoelectric detection module 6; the blue light is used as a fluorescence excitation light source and is irradiated on the sensing film; the red light is used as an auxiliary light source and directly irradiates on the photoelectric detector to detect the delay of the fluorescent signal in the circuit, and the working effectiveness of the system is ensured.

Furthermore, a telescopic rod is arranged at the top of the sensor; the telescopic rod is provided with a scale; the telescopic link is convenient for handheld, conveniently carries about, has the scale on the telescopic link, can measure the data of the different detection depth in corresponding waters.

While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An intelligent fluorescence method dissolved oxygen sensor is characterized by adopting a modular design and comprising a shell (1), a light source driving module (2), an LED blue light source (3), an oxygen sensor membrane (4), a fluorescence receiving module (5), a photoelectric detection module (6), an MCU (7) and a communication module (8) which are arranged in the shell (1), wherein optical glass (9) is arranged on the bottom surface of the shell (1), an uplink control signal end of the light source driving module (2) is connected with a corresponding control signal output end of the MCU (7), a downlink control signal output end of the light source driving module (2) is connected with the LED blue light source (3) and used for exciting the LED blue light source (3), the LED blue light source (3) can irradiate the oxygen sensor membrane (4) to excite fluorescence, and the oxygen sensor membrane (4) is fixed on the outer surface of the optical glass (9), the fluorescent light receiving module (5) is arranged on a fluorescent light signal receiving side, the photoelectric detection module (6) is arranged at the rear end of the fluorescent light receiving module (5) and used for detecting fluorescent light signals, a detection signal output end of the photoelectric detection module (6) is connected with a corresponding detection signal input end of the MCU (7), a communication signal end of the MCU (7) is in two-way connection with a downlink communication signal end of the communication module (8), and an uplink communication signal end of the communication module (8) can communicate with an upper computer.

2. The smart fluorescence-based dissolved oxygen sensor according to claim 1, wherein the communication module (8) comprises a 485 interface and a wireless communication unit, and the wireless communication unit is a Zigbee or Bluetooth module.

3. The smart fluorescence dissolved oxygen sensor according to claim 1, wherein the fluorescence receiving module (5) comprises a first optical lens (5-1) and a filter (5-2), the first optical lens (5-1) is capable of receiving the reflected fluorescence of the optical glass (9), and the filter (5-2) is disposed between the first optical lens (5-1) and the photoelectric detection module (6).

4. The smart fluorescence dissolved oxygen sensor according to claim 1, wherein the optical glass (9) and the oxygen sensor film (4) attached to the optical glass (9) are both disposed in an oblique direction.

5. The smart fluorescence dissolved oxygen sensor according to claim 4, wherein the optical glass (9) and the oxygen sensor film (4) are at an angle of 60-80 degrees with respect to the vertical direction.

6. The smart fluorometric dissolved oxygen sensor of claim 1, wherein the sensor further comprises an LED red light source (10), said LED red light source (10) facing the photodetection module (6) for detecting the delay in the fluorescence signal.

7. The smart fluorescence dissolved oxygen sensor according to claim 1, wherein a second optical lens for focusing light is further disposed between the LED blue light source (3) and the oxygen sensor film (4).

8. The intelligent fluorescence dissolved oxygen sensor of claim 1, wherein a retractable rod is further provided on the top of the sensor.

9. The intelligent fluorescence dissolved oxygen sensor of claim 8, wherein the telescoping rod has a graduated scale.