A multi-parameter water quality online monitoring transmitter

Abstract

The present invention relates to a multi-parameter water quality online monitoring transmitter, comprising a shell; a movable terminal is arranged on the shell; the movable terminal is snap-fitted with the shell; a power supply unit, a signal measuring unit, a communication unit, an output unit, and a processing unit are arranged inside the shell; the power supply unit is electrically connected to the signal measuring unit, the communication unit, the output unit, and the processing unit respectively; the signal measuring unit comprises a pH measuring unit, a dissolved oxygen measuring unit, and a temperature measuring unit; the signal measuring unit is electrically connected to the processing unit respectively; the communication unit and the output unit are electrically connected to the processing unit respectively; the invention can simultaneously measure the pH value of water quality, the dissolved oxygen saturation or dissolved oxygen content of water quality, and the water quality temperature, and the integrated design of multiple parameters eliminates the process of frequently changing the detection equipment when measuring different data; the guide rail snap-fit ​​installation is adopted, and the installation and disassembly are convenient; the power supply unit can accept a universal wide voltage of 23V-256V AC and DC, and is suitable for various power usage environments.

Description

Technical Field

[0001] The present invention relates to the technical field of transmitters, and in particular to a multi-parameter water quality online monitoring transmitter. Background Art

[0002] The transmitter is developed from the sensor. It works based on the negative feedback principle and mainly includes a measurement part, an amplifier and a feedback part.

[0003] In water quality testing, it is usually necessary to monitor multiple parameters of the water body, including the water body's pH, temperature, dissolved oxygen content and other physical and chemical characteristics. In the actual testing process, multiple corresponding testing instruments are usually required to perform multiple measurements and records. They are large and bulky and need to be fixed in a relatively large space. The recorded data must be summarized and analyzed to finally derive the physical and chemical characteristics of the water quality. During this process, the staff needs to replace the measuring instruments several times. After all the corresponding physical and chemical characteristics are measured, all the data needs to be summarized and analyzed, which consumes a lot of manpower and material resources and has extremely low work efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a multifunctional water quality monitoring transmitter to solve the problems of time-consuming and labor-intensive traditional water quality detection process and inconvenient integration in a small space.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A multi-parameter water quality online monitoring transmitter comprises a shell; the shell is provided with movable terminals; the terminals are snap-fitted with the shell; a power supply unit, a signal measuring unit, a communication unit, an output unit, and a processing unit are provided inside the shell; the power supply unit is electrically connected to the signal measuring unit, the communication unit, the output unit, and the processing unit respectively; the signal measuring unit comprises a pH measuring unit, a dissolved oxygen measuring unit, and a temperature measuring unit; the signal measuring unit is electrically connected to the processing unit; the communication unit and the output unit are electrically connected to the processing unit respectively.

[0007] Further preferably, the communication unit includes an RS-485 communication unit and a Bluetooth communication unit.

[0008] Further preferably, the housing is a rectangular parallelepiped structure, and the left and right sides are provided with V-shaped grooves for the movable terminals to be clamped; the V-shaped grooves include a lower groove surface and an upper groove surface.

[0009] Further preferably, the lower groove surface is provided with a rectangular hole; a fixed terminal is provided in the rectangular hole.

[0010] Further preferably, a card connection cavity is provided on the lower groove surface; a card contact is provided on the movable terminal; the card contact is card-engaged with the card connection cavity; an anti-dropout cavity is provided on the lower groove surface; an anti-dropout strip is provided on the movable terminal; the anti-dropout strip is card-engaged in the anti-dropout cavity; and the anti-dropout strip is arc-shaped.

[0011] Further preferably, a triangular prism-shaped connecting column is provided in the card connection cavity; and a connecting cavity cooperating with the connecting column is provided on the card contact head.

[0012] Further preferably, a clamping plate is provided on the upper groove surface; a clamping convex strip is provided on the clamping plate; a sliding groove is provided on the movable terminal; and the sliding groove is slidably matched with the clamping convex strip.

[0013] Further preferably, there are four fixed terminals, namely TB1 terminal, TB2 terminal, TB3 terminal and TB4 terminal; the TB1 terminal is internally connected to the power supply unit and the communication unit, and is externally used to connect the power supply device and the display control device; the TB2 terminal is internally connected to the output unit and the temperature measurement unit, and is externally used to connect the display control device or the temperature sensor; the TB3 terminal is internally connected to the pH measurement unit, and is externally used to connect the pH sensor; the TB4 terminal is internally connected to the temperature measurement unit and the dissolved oxygen measurement unit, and is externally used to connect the temperature sensor and the dissolved oxygen sensor.

[0014] Further preferably, the power supply unit has an AC and DC voltage input port.

[0015] Further preferably, the housing is provided with a snap-in groove for snapping on the fixed guide rail.

[0016] Beneficial effects of the present invention:

[0017] A multi-parameter water quality online monitoring transmitter has a shell with detachable movable terminals for convenient wiring with external equipment; a signal measuring unit, a temperature measuring unit and a processing unit are electrically connected to transmit signals sent by a pH sensor, a dissolved oxygen sensor and a temperature sensor to the processing unit, and can simultaneously detect water pH value, ORP, dissolved oxygen saturation, dissolved oxygen content and water temperature, eliminating the process of frequently changing detection equipment when measuring different data, saving time and improving efficiency.

[0018] Furthermore, a snap-fitting convex strip is provided on the upper groove surface, and the snap-fitting convex strip is slidably matched with the slide groove, which can more accurately and effectively realize the connection and matching between the fixed terminal and the movable terminal compared to the traditional plug-in terminal.

[0019] Furthermore, the combination of RS485 transmission and current transmission can meet the needs of various external control devices, providing customers with more choices; the power supply unit can accept a wide voltage range of 23V-256V AC and DC, and is widely used in various power usage environments.

[0020] Furthermore, a clamping groove for clamping with the guide rail is provided at the lower part of the shell, so that the installation and disassembly of the entire transmitter becomes very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the invention;

[0022] Figure 2 It is a schematic diagram of the local structure of the shell of the invention;

[0023] Figure 3 It is a schematic diagram of the local structure of the plug-in terminal of the invention;

[0024] Figure 4 It is a schematic diagram of the connection relationship between the various units of the invention.

[0025] The names corresponding to the marks in the figure are:

[0026] 1. Shell, 10. Left V-shaped groove, 11. Right V-shaped groove, 12. Snap-on groove, 13. Transparent cover, 14. Snap-on plate, 15. Snap-on convex strip, 16. Snap-on cavity, 2. Plug-in terminal, 20. Connecting surface, 21. Card contact, 22. Insert strip, 23. Anti-dropping card strip, 24. Slide groove, 3. Fixed terminal, 30. Square hole, 31. Contact pin, 32. Anti-dropping cavity. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below.

[0028] Embodiments of the present invention:

[0029] like Figure 1-Figure 4 As shown, a multi-parameter water quality online monitoring transmitter includes a shell 1 and an integrated circuit board, the circuit board is located inside the shell 1; the shell 1 is provided with a movable terminal for wiring, the movable terminal is a plug-in terminal 2, the plug-in terminal 2 is clamped on the shell 1, and the shell 1 is also provided with a fixed terminal 3 plugged with the plug-in terminal 2, the fixed terminal 3 is electrically connected to the integrated circuit board inside, and plugged with the plug-in terminal outside, so as to facilitate the connection of external equipment; an indicator light indicating the working status is provided on the side of the shell 1, so that the staff can understand what working status the transmitter is currently in.

[0030] The shell 1 is a rectangular parallelepiped structure as a whole, and two V-shaped grooves are respectively provided on the left and right sides, which are respectively denoted as the left V-shaped groove 10 and the right V-shaped groove 11. The left V-shaped groove 10 and the right V-shaped groove 11 have the same structure but are arranged in different positions. Here, the structure of the left V-shaped groove 10 is explained.

[0031] The left V-shaped groove 10 includes two planes, one of which is located on the lower side and is marked as the lower groove surface. A rectangular hole is provided on the lower groove surface, which is communicated with the inside of the housing 1 and is used to set a fixed terminal 3 that matches the plug-in terminal 2. Also located on the lower groove surface, below the rectangular hole, a clamping cavity 16 is provided for clamping and matching with the plug-in terminal 2. The plane located on the upper side is marked as the upper groove surface, and two clamping plates 14 extend perpendicularly to the upper groove surface on the front and rear edges of the upper groove surface. A clamping convex strip 15 is provided on the inner side of the clamping plate 14, which is also used for clamping and matching with the plug-in terminal 2.

[0032] The fixed terminal 3 is entirely located inside the housing 1 and is electrically connected to the integrated circuit board. The side of the fixed terminal 3 that is combined with the pluggable terminal 2 is recorded as the combination surface. The combination surface is located in the rectangular hole, just filling the side of the left V-shaped groove with the rectangular hole. A square hole 30 is provided on the combination surface, and a contact pin 31 is provided in the square hole 30 for connecting the pluggable terminal 2. An anti-disconnection cavity 32 is provided above the hole 30 above the combination surface, and the anti-disconnection cavity 32 is snap-fitted with the pluggable terminal 2.

[0033] The fixed terminal 3 is a rectangular parallelepiped structure, wherein the two surfaces respectively fitted in the V-shaped groove are correspondingly recorded as the connection surface 20 and the card surface, the connection surface 20 is fitted with the lower groove surface, and the card surface is fitted with the upper groove surface. On the connection surface 20, a card contact 21 is provided corresponding to the card cavity 16. When the plug-in terminal 2 and the fixed terminal 3 are matched, the card contact 21 is located in the card cavity 16, fixing the fixed terminal 3 and the housing 1 together. An insertion strip 22 is provided on the connecting surface 20 corresponding to the square hole 30, and a metal spring sheet in contact with the contact pin 31 is provided inside the insertion strip 22 to realize the electrical connection between the plug-in terminal 2 and the fixed terminal 3. An anti-detachment clamping strip 23 that is engaged with the anti-detachment cavity 32 is provided on the connecting surface 20. The anti-detachment clamping strip 23 has a certain curvature and a certain toughness. When the plug-in terminal 2 and the fixed terminal 3 are fixed together, the anti-detachment clamping strip 23 is located inside the anti-detachment cavity 32 to fix the plug-in terminal 2 and the fixed terminal 3 together. The curvature of the anti-detachment clamping strip 23 can realize self-locking, thereby ensuring the firmness of the fixed terminal and the plug-in terminal 2. When it needs to be pulled out, the plug-in terminal 2 is forcefully slid along the upper groove surface, and under the action of the toughness of the anti-detachment clamping strip 23, it slowly detaches from the anti-detachment cavity to realize the separation of the two.

[0034] A triangular prism-shaped connecting column is provided in the card connection cavity 16 of the lower groove surface, and a connecting cavity is provided on the card contact 21 in the plug-in terminal 2 corresponding to the connecting column. When the card contact 21 cooperates with the card connection cavity 16, the connecting column is just located in the connecting cavity. Since the connecting column is in the shape of a triangular prism, twisting and loosening caused by repeated plugging and unplugging between the fixed terminal 3 and the plug-in sheet 2 can be prevented, making the connection between the two more firm and stable.

[0035] Two slide grooves 24 are respectively provided on the front side and the rear side of the vertical connecting surface 20 on the plug-in terminal 2. When the plug-in terminal 2 is engaged with the V-shaped groove, the engaging surface of the plug-in terminal 2 is attached to the plane on the upper side of the V-shaped groove, the engaging convex strip 15 is aligned with the slide groove 24, and then the plug-in terminal 2 is pushed downward along the lower groove surface. The engaging convex strip 15 can be completely located inside the slide groove 24, so that the plug-in terminal 2 and the housing 1 are fixed together.

[0036] A snap-in groove 12 is provided on the bottom surface of the housing 1 along the front-to-back direction. The snap-in groove 12 is located in the middle of the left-right direction of the lower side of the housing 1. The snap-in groove 12 can be snapped onto the fixed guide rail, which is convenient for disassembly and fixation of the transmitter.

[0037] A power supply unit, a signal measuring unit, a temperature measuring unit, a communication unit, an output unit, and a processing unit are provided inside the shell 1; the power supply unit is electrically connected to the signal measuring unit, the temperature measuring unit, the communication unit, the output unit, and the processing unit, respectively, for supplying power. The signal measuring unit and the temperature measuring unit are electrically connected to the processing unit, respectively, for receiving and processing data monitored by corresponding external sensors. The communication unit and the output unit are electrically connected to the processing unit, respectively, and the communication unit includes RS-485 wired transmission and Bluetooth wireless transmission, for transmitting data to a mobile terminal. After the processing unit analyzes and summarizes the signal measuring unit and the temperature measuring unit, it is converted into a current signal through the output unit, and then transmitted to an external sensor or other device.

[0038] The electrical connection among the power supply unit, the signal measuring unit, the temperature measuring unit, the communication unit, the output unit and the processing unit is realized through an integrated circuit board.

[0039] The signal measuring unit includes a pH / ORP measuring unit and a dissolved oxygen signal measuring unit, which are respectively used to collect and organize the signals transmitted by the pH / ORP sensor and the signals transmitted by the dissolved oxygen sensor, and transmit them to the processing unit.

[0040] Each plug-in terminal 2 can be used as a wiring terminal. The upper and lower right V-shaped grooves on the right side are marked as TB2 wiring terminal and TB1 wiring terminal respectively; the upper and lower left V-shaped grooves on the left side are marked as TB3 wiring terminal and TB4 wiring terminal respectively.

[0041] There are four interfaces in the TB1 terminal, namely TB11, TB12, TB13, and TB14. TB11 and TB12 are connected to the power supply unit internally and are used to connect the power supply externally. TB11 and TB12 are AC and DC voltage input ports, which can input 23V-256V AC and DC power; TB13 and TB14 are RS-485A and RS-485B interfaces respectively, which are used to connect external display control devices and transmit data to them.

[0042] The TB2 terminal is connected to the output unit on the integrated circuit board. There are four interfaces on the outside, namely TB21, TB22, TB23, and TB24. TB21 and TB22 as a group can be used as the current output channel 1 interface; TB23 and TB24 as a group can be used as the current output channel 2 interface. TB21 and TB23 are positive terminals, TB22 and TB24 are negative terminals, and channel 1 and channel 2 can be used simultaneously or separately.

[0043] In actual use, TB21, TB22, TB23, and TB24 do not need to output current signals to the outside. They can be outputted only by RS-485A interface and RS-485B. They can also be used simultaneously without interfering with each other. This mainly depends on the transmission mode of the externally connected display control device. In particular, when two sets of temperatures need to be measured, TB21, TB22, TB23, and TB24 can be directly connected to the temperature sensor, provided that the external device can use the RS-485 transmission unit for transmission.

[0044] The TB3 terminal is electrically connected to the pH / ORP measurement unit on the integrated circuit board. The TB3 terminal has four wiring ports, namely TB31, TB32, TB33, and TB34. TB31 and TB33 are pH / ORP measurement input ports, TB32 is empty, and TB34 is the SG equipment liquid connection ground interface, which can be disconnected during normal operation. Here, TB31 and TB33 are connected to two connection lines of the same pH / ORP sensor, which are used to input the water quality pH measurement signal or ORP signal into the transmitter.

[0045] The TB4 terminal has four wiring ports, namely TB41, TB42, TB43, and TB44. TB41 and TB42 are electrically connected to the temperature measurement unit on the integrated circuit board, and TB43 and TB44 are electrically connected to the dissolved oxygen signal measurement unit on the integrated circuit board. TB41 and TB42 are RTD two-wire temperature sensor connection ports, which can be connected to the same temperature sensor to detect water quality temperature. When only one set of temperatures needs to be measured, the temperature sensor can be directly connected to TB41 and TB42, but cannot be connected to the TB2 terminal. TB43 and TB44 are dissolved oxygen electrode connection ports, which are used to connect dissolved oxygen sensors, and can simultaneously detect the dissolved oxygen content and density in water.

[0046] The processing unit can collect and organize the data of the pH / ORP measurement unit, the temperature measurement unit and the dissolved oxygen measurement unit and convert them into display signals, communication signals or analog signals.

[0047] Corresponding to the working status of each unit in the transmitter, the indicator lights include a pH measurement indicator light, an ORP measurement indicator light, a dissolved oxygen saturation measurement indicator light, a dissolved oxygen density measurement indicator light, a temperature measurement indicator light, an RS-485 communication indicator light, a Bluetooth communication indicator light and a power indicator light. The indicator lights are all electrically connected to the integrated circuit board. When the transmitter is in a certain working state, the corresponding indicator lights are on. In particular, the RS-485 communication indicator light and the Bluetooth communication indicator light will flash to indicate their working status.

[0048] A protective cover 13 is provided on the upper side of the indicator light to protect the indicator light from being bumped, and one edge of the protective cover 13 is hinged on the housing 1 to achieve opening and closing at a certain angle. The protective cover 13 is made of transparent material for direct observation.

[0049] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A multi-parameter water quality online monitoring transmitter, characterized in that: including a housing; The housing is provided with a movable terminal; the movable terminal is engaged with the housing; A power supply unit, a signal measuring unit, a communication unit, an output unit, and a processing unit are provided inside the housing; the power supply unit is electrically connected to the signal measuring unit, the communication unit, the output unit, and the processing unit respectively; the signal measuring unit includes a pH measuring unit, a dissolved oxygen measuring unit, and a temperature measuring unit; The signal measuring unit is electrically connected to the processing unit; The communication unit and the output unit are electrically connected to the processing unit respectively; The housing is a rectangular parallelepiped structure, and the left and right sides are provided with V-shaped grooves for the movable terminals to be clamped; the V-shaped grooves include a lower groove surface and an upper groove surface; The lower groove surface is provided with a rectangular hole; a fixed terminal is provided in the rectangular hole; There are four fixed terminals in total, namely TB1 terminal, TB2 terminal, TB3 terminal and TB4 terminal; the TB1 terminal is internally connected to the power supply unit and the communication unit, and is externally used to connect the power supply device and the display control device; the TB2 terminal is internally connected to the output unit and the temperature measurement unit, and is externally used to connect the display control device or the temperature sensor; the TB3 terminal is internally connected to the pH measurement unit, and is externally used to connect the pH sensor; the TB4 terminal is internally connected to the temperature measurement unit and the dissolved oxygen measurement unit, and is externally used to connect the temperature sensor and the dissolved oxygen sensor.

2. A multi-parameter water quality online monitoring transmitter according to claim 1, characterized in that: The communication unit includes an RS-485 communication unit and a Bluetooth communication unit.

3. A multi-parameter water quality online monitoring transmitter according to claim 1, characterized in that: A card connection cavity is provided on the lower groove surface; a card contact is provided on the movable terminal; the card contact is card-engaged with the card connection cavity; an anti-dropout cavity is provided on the lower groove surface; an anti-dropout strip is provided on the movable terminal; the anti-dropout strip is card-engaged in the anti-dropout cavity; and the anti-dropout strip is arc-shaped.

4. A multi-parameter water quality online monitoring transmitter according to claim 3, characterized in that: A triangular prism-shaped connecting column is arranged in the card connection cavity; and a connecting cavity matching with the connecting column is arranged on the card contact head.

5. The multi-parameter water quality online monitoring transmitter according to claim 1 is characterized in that: The upper groove surface is provided with a clamping plate; the clamping plate is provided with a clamping convex strip; the movable terminal is provided with a sliding groove; the sliding groove is slidably matched with the clamping convex strip.

6. A multi-parameter water quality online monitoring transmitter according to claim 1, characterized in that: The power supply unit has an AC / DC voltage input port.

7. A multi-parameter water quality online monitoring transmitter according to claim 1, characterized in that: The shell is provided with a clamping groove for clamping the fixing guide rail.

Images