Small water quality online turbidity meter

Abstract

The utility model discloses a small-sized water quality online turbidity meter which comprises a meter main body, an optical module and a circuit board which are electrically connected are arranged in the meter main body, and a central control unit, a signal processing unit, a display and communication unit and a data storage unit are integrated on the circuit board. And the central control unit is connected with the optical module, the signal processing unit, the data storage unit and the display and communication unit. According to the turbidity meter provided by the utility model, the optical module and the circuit board are integrally designed and are arranged in the meter main body, so that the size of the meter is reduced, and a central control unit, a signal processing unit, a display unit, a communication unit and a data storage unit are integrated on the circuit board, so that the functions of controlling operation and receiving, processing, transmitting and storing data are uniformly realized; measurement control is achieved without communication among the functional circuit boards, signal processing is simple, the anti-interference capability is high, the method is more reliable, and the interaction delay and the communication error probability of turbidity measurement and control among the functional circuit boards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality turbidity detection, in particular to a small water quality online turbidity meter. Background Art

[0002] Online water quality monitoring can monitor water quality parameters in real time, realize remote monitoring and automatic control, improve water quality management efficiency, and promptly discover water quality problems such as water pollution and water quality changes, which helps to take timely measures to ensure water quality safety. It is an important measure to ensure water quality safety and promote sustainable development.

[0003] Turbidity is an important online water quality monitoring parameter. It reflects the content of suspended matter in water and is widely used in drinking water, water treatment process, water environment and sewage treatment. Turbidity is one of the important indicators for evaluating drinking water quality. Water with high turbidity may contain more suspended matter and microorganisms, posing a threat to human health. In drinking water monitoring, turbidity is usually used as an important indicator to monitor and evaluate water quality. Turbidity is also an important indicator for monitoring and protecting water bodies such as rivers and lakes. In the sewage treatment process, turbidity monitoring can help monitor the removal effect of suspended matter, evaluate the operation status of the treatment process, and ensure that the sewage treatment effect meets the standards.

[0004] At present, the instrument form of water quality online turbidity meter usually consists of two parts: controller and sensor, which together complete the monitoring and data processing of water quality turbidity.

[0005] The controller is the main control part of the online turbidity meter for water quality, usually including display screen, buttons, data processor and other components. The controller can realize the control and data acquisition of the sensor, display the monitoring data and parameter settings, and provide a user operation interface. The sensor is the core component of the online turbidity meter for water quality, which is used to monitor the turbidity in water in real time. The sensor usually uses optical principles to measure turbidity, and reflects the turbidity degree of water quality by measuring the scattering of light by suspended particles in the water body. The sensor transmits the measured turbidity data to the controller for processing and display, so as to realize the online monitoring and management of water quality turbidity. The controller and the sensor transmit data and communicate through cables or other connection methods to realize the control and data acquisition of the sensor by the controller.

[0006] However, the combination of controller and sensor makes the use of turbidity sensor dependent on dedicated controller, which has great limitations, is not convenient for multi-parameter integration, and has high cost. In addition, since the turbidity measurement and control circuits are separated, there is more communication between the circuits, which is easy to cause interaction delays and measurement and data transmission errors.

[0007] In view of this, it is necessary to propose further improvements to the current water quality online turbidity meter. Utility Model Content

[0008] Therefore, the utility model aims to solve the deficiencies in the prior art to at least a certain extent, thereby proposing a small water quality online turbidity meter.

[0009] In order to achieve the above purpose, a technical solution adopted by the utility model is:

[0010] The utility model provides a small water quality online turbidity meter, comprising an instrument body, wherein an electrically connected optical module and a circuit board are arranged in the instrument body, wherein the circuit board is integrated with a central control unit, a signal processing unit, a display and communication unit, and a data storage unit, and the central control unit is connected with the optical module, the signal processing unit, the data storage unit, and the display and communication unit.

[0011] Furthermore, a power communication interface is provided on the circuit board, and the power communication interface can be externally connected to a display device; and a communication interface is provided on the display and communication unit, and the communication interface is used to connect to an external device.

[0012] Furthermore, the power communication interface is a standard interface, and the models of the power communication interface include RS485, RS232, USB, SPI, I2C, and RJ45.

[0013] Further, the optical module comprises a light source, a lens and a photoelectric detector, and the light source and the photoelectric detector are connected to the circuit board, so that the central control unit is connected to the photoelectric module.

[0014] Furthermore, the instrument body comprises a shell, the optical module, the circuit board and the measuring bottle are arranged in the shell, the power supply communication interface is exposed from the shell, and the two ends of the shell are respectively connected with a first connector and a second connector.

[0015] Furthermore, a dark box is arranged in the shell, and the optical module is arranged in the dark box.

[0016] Furthermore, the outer shell includes a shell and a shell cover which are connected to each other, a seal is arranged between the shell cover and the shell, and the seal is embedded in the shell cover; a through hole for connecting the first joint and the second joint is respectively opened in the middle position of the shell cover and the shell.

[0017] Furthermore, one end of the first joint is connected to the measuring bottle through the through hole of the shell cover, and the other end is connected to a liquid inlet and waste discharge pipe. The end of the liquid inlet and waste discharge pipe away from the first joint is provided with a waste discharge port, and the liquid inlet and waste discharge pipe is also provided with a liquid inlet.

[0018] Furthermore, the waste outlet is connected to a normally closed valve, and the liquid inlet is connected to a normally open valve.

[0019] Furthermore, one end of the second joint is connected to the measuring bottle through the through hole of the shell, and the other end is detachably connected to a cleaning cover, and a liquid outlet is also provided on the second joint.

[0020] The utility model provides a small online turbidity meter for water quality, including an instrument body, an electrically connected optical module and a circuit board are arranged in the instrument body, the circuit board is integrated with a central control unit, a signal processing unit, a display and communication unit, and a data storage unit, and the central control unit is connected to the optical module, the signal processing unit, the data storage unit, and the display and communication unit. Through the online turbidity meter provided by the utility model, the optical module and the circuit board are integrated and designed and arranged in the instrument body, and the central control unit, the signal processing unit, the display and communication unit, and the data storage unit are integrated on the circuit board, which can uniformly realize the functions of controlling operation and receiving, processing, transmitting and storing data, without the need to realize measurement control through communication between various functional circuit boards, the signal processing is simple, the anti-interference ability is strong, and it is more reliable, so that the interaction delay and communication error probability between turbidity measurement and control of various functional circuit boards can be reduced; and the two are integrated and designed in the instrument body, so that the volume of the instrument body is small, which is convenient for users to add online measurement of turbidity parameters later, and is easy to integrate and network. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is a module connection block diagram of the small online water quality turbidity meter of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the instrument body of the small-sized online water quality turbidity meter of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the optical module and circuit board of the small-sized online water quality turbidity meter of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the optical module of the small-sized online water quality turbidity meter of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the shell of the small-sized online water quality turbidity meter of the utility model;

[0027] Figure 6 It is a structural schematic diagram of the first joint of the small-sized online water quality turbidity meter of the utility model;

[0028] Figure 7 It is a structural schematic diagram of the second joint of the small-sized online water quality turbidity meter of the utility model.

[0029] The reference numerals in the figure are as follows: 1. Instrument body; 11. Shell; 111. Dark box; 112. Shell; 113. Shell cover; 12. First joint; 121. Liquid inlet and waste pipe; 122. Waste outlet; 123. Liquid inlet; 13. Second joint; 131. Cleaning cover; 132. Liquid outlet; 2. Optical module; 21. Light source; 22. Lens; 23. Photodetector; 3. Circuit board; 31. Central control unit; 32. Signal processing unit; 33. Display and communication unit; 34. Data storage unit; 35. Power supply communication interface; 4. Normally open valve; 5. Normally closed valve. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] Please refer to Figures 1 to 7The utility model provides a small online water quality turbidity meter, including an instrument body 1, in which an electrically connected optical module 2 and a circuit board 3 are arranged, and the circuit board 3 integrates a central control unit 31, a signal processing unit 32, a display and communication unit 33, and a data storage unit 34. The central control unit 31 is connected with the optical module 2, the signal processing unit 32, the data storage unit 34 and the display and communication unit 33.

[0033] In this embodiment, the small water quality online turbidity meter includes an instrument body 1, in which an optical module 2 and a circuit board 3 are arranged. The optical module 2 and the circuit board 3 are electrically connected, and the two are integrated in design, so there is no need to realize measurement control through communication between the functional circuit boards. The signal processing is simple, the anti-interference ability is strong, and it is more reliable; and the two are interconnected and arranged in the instrument body 1, which is convenient for users to add online measurement of turbidity parameters later, and is easy to integrate and form.

[0034] In this embodiment, the optical module 2 and the circuit board 3 are connected to each other, and the circuit board 3 integrates a central control unit 31, a signal processing unit 32, a display and communication unit 33 and a data storage unit 34, which uniformly realize the functions of controlling operation and receiving, processing, transmitting and storing data. Specifically, the central control unit 31 controls the overall operation of the online turbidity meter, including functions such as starting, stopping, calibration, continuous operation, automatic adjustment, sampling, waste discharge, cleaning, etc. In addition, it can also detect the operating status of the instrument. When an abnormal situation is detected, such as the turbidity exceeds the set threshold or the equipment fails, it can control the alarm information. The central control unit 31 is connected to the optical module 2, and the central control unit 31 controls the operation of the optical module 2, so that the electrical signal output by the optical module 2 can be received and processed. The signal processing unit 32 is used to filter, amplify and digitize the received electrical signal, so as to extract the measurement information related to the turbidity, and analyze and calculate the processed signal to obtain the turbidity value of the water sample. The display and communication unit 33 is used to display the measured turbidity value, operating status and alarm information on an external display device. The data storage unit 34 is responsible for storing and managing turbidity measurement data, measurement time, alarm information, and the like.

[0035] In this embodiment, after the central control unit 31 receives the electrical signal output from the optical module 2, it transmits the electrical signal to the signal processing unit 32. The signal processing unit 32 processes the received electrical signal to obtain measurement information, and transmits the obtained measurement information to the central control unit 31. The central control unit 31 displays the received measurement information on its external display device through the display and communication unit 33, wherein the central control unit 31 transmits all the received information to the data storage unit 34 for storage and management.

[0036] Among them, the chip model specifically used by the central control unit 31 in this embodiment is STM32G0B1, the chip model specifically used by the signal processing unit 32 in this embodiment is ADX121, the chip model specifically used by the data storage unit 34 in this embodiment is W25Q128JV, and the chip model specifically used by the display and communication unit 33 in this embodiment is SP3485.

[0037] Furthermore, a power communication interface 35 is provided on the circuit board 3, and the power communication interface 35 can be externally connected to a display device; a communication interface is provided on the display and communication unit 33, and the communication interface is used to connect to an external device.

[0038] In this embodiment, a power communication interface 35 is provided on the circuit board 3. The power communication interface 35 realizes a two-in-one interface for power supply and communication. The power communication interface 35 is connected to a display device through a cable, wherein the display and communication unit 33 can display the measured turbidity value, operating status, and alarm information on the display device connected through the power communication interface 35, that is, the display and communication unit 33 transmits the measured data to the central control unit 31, and the central control unit 31 displays the measured data on the display device connected to the power communication interface 35. When measuring turbidity online, the power communication interface 35 is connected to a display device with a standard interface, so that the turbidity measurement data and operating status can be displayed, and the operating status can be changed by operation.

[0039] In this embodiment, the display and communication unit 33 is also provided with a communication interface, and an external device can be connected through the communication interface, so that the user can conveniently transfer data to the external device or system for further processing and analysis.

[0040] Furthermore, the power communication interface 35 is a standard interface, and models of the power communication interface 35 include RS485, RS232, USB, SPI, I2C, and RJ45.

[0041] In this embodiment, the power communication interface 35 is a standard interface, which can make the online turbidity meter independent of a dedicated or single controller. It can be connected to any device with a standard communication interface, and can be used for turbidity detection, data collection and maintenance, solving the problem of turbidity detection relying on a dedicated controller. Among them, the model of the power communication interface 35 can be RS485, RS232, USB, SPI, I2C, RJ45. In this embodiment, the model of the power communication interface 35 is preferably RS485, and the communication protocol of the power communication interface 35 is preferably the standard modbus protocol. The specific model of the power communication interface 35 is not limited here, and it is set according to actual production needs.

[0042] Furthermore, the optical module 2 includes a light source 21 , a lens 22 and a photodetector 23 , and the light source 21 and the photodetector 23 are connected to the circuit board 3 , so that the central control unit 31 is connected to the photoelectric module 2 .

[0043] In this embodiment, the optical module 2 includes a light source 21, a lens 22 and a photodetector 23, wherein the cable connecting the light source 21 and the photodetector 23 extends outward and is flexibly connected to the circuit board 3, so that the central control unit 31 is connected to the optical module 2, and the photodetector 23 can transmit the electrical signal output by it to the central control unit 31. In this embodiment, the light source 21 can be a white light LED or an 830-890nm infrared LED. The specific type of the light source 21 is not limited here and is set according to actual production requirements. In this embodiment, the chip model specifically used by the photodetector 23 is BPW21R.

[0044] Furthermore, the instrument body 1 includes a shell 11, in which the optical module 2, the circuit board 3 and the measuring bottle are arranged, the power communication interface 35 is exposed from the shell 11, and the two ends of the shell 11 are respectively connected to the first connector 12 and the second connector 13.

[0045] In this embodiment, the instrument body 1 includes a housing 11, and an optical module 2, a circuit board 3 and a measuring bottle are arranged in the housing 11, so that the volume of the online turbidity meter can be reduced, which is convenient for users to add online measurement of turbidity parameters in the later stage, and is convenient for integration and networking. Among them, the measuring bottle contains a water sample for measuring turbidity. The power communication interface 35 arranged on the circuit board 3 is exposed to the housing 11, so that the power communication interface 35 can be better connected to the display device. Specifically, the two ends of the housing 11 are also connected to the first connector 12 and the second connector 13, respectively, and the first connector 12 and the second connector 13 are used for liquid inlet and liquid discharge.

[0046] Furthermore, a dark box 111 is disposed in the housing 11 , and the optical module 2 is disposed in the dark box 111 .

[0047] In this embodiment, a dark box 111 is further disposed in the housing 11 . The optical module 2 is disposed in the dark box 111 . The dark box 111 is used to provide a light-proof environment for the optical module 2 .

[0048] Furthermore, the outer shell 11 includes a shell body 112 and a shell cover 113 which are connected to each other, a seal is arranged between the shell cover 113 and the shell body 112, and the seal is embedded in the shell cover 113; a through hole for connecting the first joint 12 and the second joint 13 is respectively opened in the middle position of the shell cover 113 and the shell body 112.

[0049] In this embodiment, the housing 11 includes a shell 112 and a shell cover 113, the shell 112 and the shell cover 113 are connected to each other, a sealing member is provided between the shell 112 and the shell cover 113, and the sealing member is embedded in the inner surface of the shell cover 113, and the size of the sealing member is adapted to the inner surface size of the shell cover 113. The sealing member is specifically a sealing ring in this embodiment, and the specific size of the sealing member is not limited here, and is set according to actual production requirements.

[0050] In this embodiment, a through hole is respectively opened in the middle position of the shell cover 113 and the shell body 112 , wherein the through hole on the shell cover 113 is used to connect to the first connector 12 , and the through hole on the shell body 112 is used to connect to the second connector 13 .

[0051] Furthermore, one end of the first connector 12 is connected to the measuring bottle through the through hole of the shell cover 113, and the other end is connected to the liquid inlet and waste discharge pipe 121. The end of the liquid inlet and waste discharge pipe 121 away from the first connector 12 is provided with a waste discharge port 122, and the liquid inlet and waste discharge pipe 121 is also provided with a liquid inlet 123.

[0052] In this embodiment, through holes are provided at both ends of the first joint 12. Specifically, a through hole matching the shell cover 113 is provided at one end of the first joint 12 close to the shell cover 113, so that the liquid inlet end of the measuring bottle can be connected through the through hole of the shell cover 113. The end of the first joint 12 away from the shell cover 113 is connected to the liquid inlet and waste discharge pipe 121. Specifically, the liquid inlet and waste discharge pipe 121 is provided with three openings. The end of the liquid inlet and waste discharge pipe 121 close to the first joint 12 is provided with an opening so as to be connected with the through hole of the first joint 12; the end of the liquid inlet and waste discharge pipe 121 away from the first joint 12 is provided with a row of waste ports 122 for connecting the waste liquid flow path; the middle part of the liquid inlet and waste discharge pipe 121 is also provided with a liquid inlet port 123 for connecting the sample flow path.

[0053] Furthermore, the waste outlet 122 is connected to a normally closed valve 5 , and the liquid inlet 123 is connected to a normally open valve 4 .

[0054] In this embodiment, the waste outlet 122 is connected to a normally closed valve 5, which is in a closed state during the sample injection measurement and in an open state when the waste liquid (waste liquid for cleaning) is discharged; the liquid inlet 123 is connected to a normally open valve 4, which is in an open state during the sample injection measurement and in a closed state when the waste liquid (waste liquid for cleaning) is discharged. In this embodiment, the normally open valve 4 and the normally closed valve 5 are both solenoid valves.

[0055] Furthermore, one end of the second connector 13 is connected to the measuring bottle through the through hole of the housing 112 , and the other end is detachably connected to a cleaning cover 131 . The second connector 13 is also provided with a liquid outlet 132 .

[0056] In this embodiment, a through hole matching the through hole of the shell 112 is provided at one end of the second joint 13 close to the shell 112, so that the second joint 13 can be connected to the liquid outlet of the measuring bottle through the through hole of the shell 112. A mouth is provided at one end of the second joint 13 away from the shell 112, and a cleaning cover 131 is detachably connected, so that when cleaning and maintaining the measuring bottle, the cleaning cover 131 can be opened to directly operate the cleaning without taking out the measuring bottle, avoiding repeated disassembly and assembly of the measuring bottle to cause poor sealing, leakage inside the instrument, large turbidity measurement error and other abnormalities. Among them, a sealing member is provided between the cleaning cover 131 and the second joint 13. A liquid outlet 132 is also provided on the side of the second joint 13 for connecting the liquid outlet flow path.

[0057] The utility model provides a small online turbidity meter for water quality, including an instrument body, an electrically connected optical module and a circuit board are arranged in the instrument body, the circuit board is integrated with a central control unit, a signal processing unit, a display and communication unit, and a data storage unit, and the central control unit is connected to the optical module, the signal processing unit, the data storage unit, and the display and communication unit. Through the online turbidity meter provided by the utility model, the optical module and the circuit board are integrated and designed and arranged in the instrument body, and the central control unit, the signal processing unit, the display and communication unit, and the data storage unit are integrated on the circuit board, which can uniformly realize the functions of controlling operation and receiving, processing, transmitting and storing data, without the need to realize measurement control through communication between various functional circuit boards, the signal processing is simple, the anti-interference ability is strong, and it is more reliable, so that the interaction delay and communication error probability between turbidity measurement and control of various functional circuit boards can be reduced; and the two are integrated and designed in the instrument body, so that the volume of the instrument body is small, which is convenient for users to add online measurement of turbidity parameters later, and is easy to integrate and network.

[0058] It should be noted that the various embodiments in the present invention are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0059] It should also be noted that, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined in the present invention may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in the present invention, but will conform to the widest range consistent with the principles and novel features disclosed in the present invention.

Claims

1. A small online water quality turbidity meter, characterized in that: The invention comprises an instrument body, wherein an electrically connected optical module and a circuit board are arranged in the instrument body, wherein the circuit board integrates a central control unit, a signal processing unit, a display and communication unit, and a data storage unit, wherein the central control unit is connected to the optical module, the signal processing unit, the data storage unit, and the display and communication unit; the instrument body comprises a shell, wherein the optical module, the circuit board and the measuring bottle are arranged in the shell, wherein a power supply communication interface is exposed in the shell, wherein two ends of the shell are respectively connected to a first connector and a second connector, wherein a through hole for connecting the first connector and the second connector is respectively provided in the middle position of the shell cover and the shell, wherein one end of the second connector is connected to the measuring bottle through the through hole of the shell, and the other end is detachably connected to a cleaning cover, and a liquid outlet is also provided on the second connector.

2. The small water quality online turbidity meter according to claim 1 is characterized in that: The circuit board is provided with a power communication interface, and the power communication interface can be externally connected to a display device; the display and communication unit is provided with a communication interface, and the communication interface is used to connect to an external device.

3. The small water quality online turbidity meter according to claim 2 is characterized in that: The power communication interface is a standard interface, and the models of the power communication interface include RS485, RS232, USB, SPI, I2C, and RJ45.

4. The small water quality online turbidity meter according to claim 1 is characterized in that: The optical module comprises a light source, a lens and a photodetector, and the light source and the photodetector are connected to the circuit board so that the central control unit is connected to the optical module.

5. The small water quality online turbidity meter according to claim 4 is characterized in that: A dark box is also arranged in the shell, and the optical module is arranged in the dark box.

6. The small water quality online turbidity meter according to claim 4 is characterized in that: The housing comprises a shell body and a shell cover which are connected to each other. A sealing member and a measuring bottle are arranged between the shell cover and the shell body, and the sealing member is embedded in the shell cover.

7. The small water quality online turbidity meter according to claim 6 is characterized in that: One end of the first joint is connected to the measuring bottle through the through hole of the shell cover, and the other end is connected to a liquid inlet and waste discharge pipe. The end of the liquid inlet and waste discharge pipe away from the first joint is provided with a waste discharge port, and the liquid inlet and waste discharge pipe is also provided with a liquid inlet.

8. The small water quality online turbidity meter according to claim 7 is characterized in that: The waste outlet is connected with a normally closed valve, and the liquid inlet is connected with a normally open valve.

Images