Pipeline control valve based on Internet of Things platform and working method thereof

Abstract

This invention proposes a pipeline control valve based on an Internet of Things (IoT) platform and its operating method. The valve mechanism includes an STM32 controller, a wireless transmission module, and a stepper motor electrically connected to it. The output shaft of the stepper motor is connected to the outer nut of the valve stem to drive the valve stem in axial movement. The STM32 controller is connected to the IoT platform via the wireless transmission module. This enables real-time reporting of the valve's opening degree and operating status, and also allows for intelligent remote control of the pipeline valve via IoT. This solves the problems of inconvenient monitoring of valve opening degree and operating status, difficulty in adjusting valve opening, and the need for significant manual labor in existing technologies. Users can directly access the IoT platform via their mobile phones to monitor and control the valve anytime, anywhere.

Description

Technical Field

[0001] The present invention belongs to the technical field of valves, and in particular relates to a pipeline control valve based on an Internet of Things platform and a working method thereof. Background Art

[0002] Urban drainage pipes are an important guarantee for a good urban environment and people's high-quality life, so it is of great significance to study the intelligent control of drainage pipes. Since the pipe network is buried deep underground or arranged in unmanned areas, the pipe network valves are generally controlled manually on site, which is time-consuming and labor-intensive, and there are problems such as untimely control and difficulty in operation. If the pipeline valve fails, it cannot be checked and repaired in time, and many unnecessary losses are often caused by the pipeline valve. Therefore, it is very necessary to improve the pipeline valve. Summary of the invention

[0003] In view of the defects and shortcomings of the prior art, the present invention proposes a solution for a pipeline control valve and its working method based on an Internet of Things platform, so as to realize real-time reporting of the valve opening and operating status, and at the same time realize the function of intelligent remote control of the pipeline valve through the Internet of Things, thereby solving the problems in the prior art of inconvenient monitoring of the opening and operating status of the pipeline valve, difficulty in adjusting the valve opening, and the need for a large amount of manual labor. Users can directly access the Internet of Things platform through their mobile phones to realize monitoring and control of the valve anytime and anywhere.

[0004] The present invention specifically adopts the following technical solutions:

[0005] A pipeline control valve based on an Internet of Things platform, characterized in that it comprises: a valve mechanism, and an STM32 controller, a wireless transmission module and a stepper motor arranged on the valve mechanism and electrically connected; the output shaft of the stepper motor is connected to the outer nut of the valve stem to drive the valve stem to perform axial movement; the STM32 controller is connected to the Internet of Things platform via the wireless transmission module. The function of this structure is to realize data acquisition and transmission and valve opening adjustment, and realize online remote control through the Internet of Things. The STM32 microcontroller serves as the core controller of the entire valve and performs simple processing on the relevant data of the valve, and is connected to the stepper motor through a digital I / O port.

[0006] Preferably, the valve mechanism comprises: a valve cover, an upper valve body, a lower valve body, a valve seat, a bearing, a valve stem and a valve stem outer nut; the valve stem outer nut is arranged at the top of the valve stem and passes through two bearings horizontally and parallelly installed on the upper valve body, and a pair of bearings is used to reduce the resistance encountered by the valve stem outer nut during rotation; the valve cover is installed on the top of the upper valve body to play a packaging role.

[0007] Preferably, the STM32 controller is fixedly mounted on the valve cover, and the wireless transmission module is fixedly mounted on the circuit board where the STM32 controller is located; the stepper motor is installed downward above the valve stem outer nut, and its output shaft is meshed with the valve stem outer nut; at least one battery connected to the STM32 controller is arranged between the valve cover and the upper valve body.

[0008] Preferably, a guide key is provided on the valve stem, and the guide key is installed on the keyway of the valve stem to limit the axial movement of the valve stem; an oil cup is provided between the two bearings, and oil is filled through the oil cup to further reduce the resistance during transmission; the bearing is fixed by a bearing gland, and since the bearing gland needs to withstand the upward force of the deep groove ball bearing, the bearing gland is reinforced by a set screw; in the lower valve body, packing and packing gland are used to seal the drainage pipeline of the valve, wherein the packing gland is installed on the lower valve body by threads and plays a role in compressing the packing; the upper valve body and the lower valve body are fixed by studs.

[0009] Preferably, the bearing is a deep groove ball bearing, the oil cup is threadedly connected to the upper valve body, and two sealing rings are arranged on the valve stem outer nut to seal the bearing. For other key parts of the transmission structure, the sealing ring structure can also be used for watertight treatment.

[0010] Preferably, the wireless transmission module adopts ESP8266-01S WIFI module.

[0011] And according to the working method of the pipeline control valve based on the Internet of Things platform, it is characterized in that: the state of the valve is determined by recording the number of steps of the stepper motor. Specifically, the STM32 microcontroller calibrates the stepper motor and records the current state data of the stepper motor, organizes the relevant state data of the stepper motor into the working condition data of the valve, and reports it to the Internet of Things platform through the wireless transmission module.

[0012] Preferably, the method comprises the following steps:

[0013] Step A1: calibrate the stepper motor to obtain the current state parameters of the stepper motor, and convert the current state parameters of the stepper motor to obtain the current opening of the valve and the current operating state of the valve;

[0014] Step A2: Upload the data of valve opening and current operating status to the Internet of Things platform through the wireless transmission module;

[0015] Step A3: The IoT platform reports the valve opening information and operating status to the mobile client connected to the IoT platform.

[0016] Preferably, the method comprises the following steps:

[0017] Step B1: The user sends valve control instructions to the IoT platform through the mobile client;

[0018] Step B2: The IoT platform sends the valve control command to the pipeline control valve through the wireless transmission module;

[0019] Step B3: The STM32 microcontroller controls the stepper motor to execute the corresponding number of operation steps according to the valve control instruction.

[0020] Preferably, when the Internet of Things platform detects that the issued valve control instruction is inconsistent with the received current valve opening and current valve operating state at the next moment, it determines that the valve is in a fault state and notifies the mobile client.

[0021] Compared with the prior art, the present invention and its preferred solution have the following beneficial effects: the pipeline control valve based on the Internet of Things platform reports the valve opening and operating status information obtained by the STM32 microcontroller to the Internet of Things platform through a wireless transmission module, and the user can instantly view the current opening and operating status of the pipeline control valve through a mobile client and other methods, so that the valve can be repaired and replaced accordingly when a valve fails. If the user needs to adjust the valve, the command can be sent directly through a platform such as a mobile client connected to the Internet of Things to adjust the pipeline control valve. The present invention can avoid a comprehensive and unfocused troubleshooting method, perform targeted troubleshooting, and at the same time adjust the valve opening through the Internet of Things platform, greatly saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 It is a schematic cross-sectional view of the structure of a pipeline control valve based on the Internet of Things platform according to an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the control flow of an Internet of Things control system according to an embodiment of the present invention;

[0025] Figure 3 AA is a schematic diagram of the cross-sectional structure of an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the valve stem structure of an embodiment of the present invention;

[0027] Figure 5 It is a top view schematic diagram of the guide key structure of an embodiment of the present invention;

[0028] In the figure: 1. Valve cover; 2. Battery; 3. Stepper motor; 4. Stud; 5. Set screw; 6. Deep groove ball bearing; 7. Upper valve body; 8. Guide key; 9. Valve seat; 10. Packing gasket; 11. Packing; 12. Lower valve body; 13. Sealing ring; 14. Packing gland; 15. Valve stem; 16. Oil cup; 17. Bearing gland; 18. Valve stem outer nut; 19. STM32 microcontroller; 20. Wireless transmission module. DETAILED DESCRIPTION

[0029] In order to make the features and advantages of this patent more obvious and easy to understand, the following embodiments are specifically described in detail as follows:

[0030] like Figure 1-Figure 5 As shown, the pipeline control valve design scheme of this embodiment is based on the Internet of Things platform, and its main components include: valve cover 1, battery 2, stepper motor 3, stud 4, set screw 5, deep groove ball bearing 6, upper valve body 7, guide key 8, valve seat 9, packing gasket 10, packing 11, lower valve body 12, sealing ring 13, packing gland 14, valve stem 15, oil cup 16, bearing gland 17, valve stem outer nut 18, STM32 microcontroller 19 and wireless transmission module 20.

[0031] From the perspective of structure and function, it can be mainly divided into: valve mechanism, and STM32 controller, wireless transmission module and stepper motor which are arranged on the valve mechanism and form electrical connection. And it is powered by battery.

[0032] Among them, Figure 3 As shown, the output shaft of the stepper motor is meshed with the outer nut of the valve stem to drive the valve stem to perform axial movement. The STM32 controller is connected to the Internet of Things platform via a wireless transmission module. The function of this structure is to realize data acquisition and transmission and valve opening adjustment, and realize online remote control through the Internet of Things. The STM32 microcontroller serves as the core controller of the entire valve and performs simple processing on the relevant data of the valve, and is connected to the stepper motor through a digital I / O port. In this embodiment, the wireless transmission module adopts the ESP8266-01SWIFI module, and uses AT commands to report and receive data to the Internet of Things. The relevant signals of the data acquisition module in the control valve include 2 digital output signals and 1 digital input signal. The digital input signal comes from the wireless transmission module, and the digital output signal is used to control the stepper motor to adjust the valve opening and send it to the wireless transmission module to obtain information.

[0033] The valve mechanism includes: a valve cover, an upper valve body, a lower valve body, a valve seat, a bearing, a valve stem and a valve stem outer nut; the valve stem outer nut is arranged on the top of the valve stem and passes through two bearings installed horizontally and parallelly on the upper valve body. A pair of bearings is used to reduce the resistance encountered by the valve stem outer nut when it rotates; the valve cover is installed on the top of the upper valve body to play a packaging role.

[0034] The STM32 controller is fixedly installed on the valve cover, and the wireless transmission module is welded on the circuit board where the STM32 controller is located; the stepper motor is installed downward above the outer nut of the valve stem, and four batteries connected to the STM32 controller are arranged between the valve cover and the upper valve body.

[0035] like Figure 4 As shown, in this embodiment, a guide key is provided on the valve stem, and the guide key is installed on the keyway of the valve stem to limit the axial movement of the valve stem. Since the valve stem cannot move circumferentially, when the outer nut of the valve stem rotates, the valve stem will move axially accordingly, thereby adjusting the valve opening.

[0036] In this embodiment, an oil cup is arranged between the two bearings, and oil is injected through the oil cup to further reduce the resistance during transmission; the bearing is fixed by a bearing cover, and because the bearing cover needs to withstand the upward force of the deep groove ball bearing, the bearing cover is reinforced by a set screw; in the lower valve body, packing and packing cover are used to seal the drainage pipeline of the valve, wherein the packing cover is installed on the lower valve body by threads and plays a role in compressing the packing; the upper valve body and the lower valve body are fixed by studs.

[0037] The bearing is a deep groove ball bearing, and the oil cup is threadedly connected to the upper valve body; two sealing rings are arranged on the outer nut of the valve stem to seal the bearing. For other key parts of the transmission structure, the sealing ring structure can also be used for watertight treatment, such as the connection between the upper valve body and the lower valve body.

[0038] Based on the design of the above device, such as Figure 2 As shown, this embodiment determines the state of the valve by recording the number of steps of the stepper motor. Specifically, the STM32 microcontroller calibrates the stepper motor and records the current state data of the stepper motor, organizes the relevant state data of the stepper motor into the working condition data of the valve, and reports it to the Internet of Things platform through the wireless transmission module. Multiple valves designed using the scheme of this embodiment can be connected to the Internet of Things platform at the same time for batch management.

[0039] The monitoring and acquisition of valve status include the following steps:

[0040] Step A1: calibrate the stepper motor to obtain the current state parameters of the stepper motor, and convert the current state parameters of the stepper motor to obtain the current opening of the valve and the current operating state of the valve;

[0041] Step A2: Upload the data of valve opening and current operating status to the Internet of Things platform through the wireless transmission module; after obtaining the data, the Internet of Things platform can establish a relevant curve model of the pipeline control valve to determine whether the valve is faulty.

[0042] Step A3: The IoT platform reports the valve opening information and operating status to the mobile client connected to the IoT platform.

[0043] Remote control of the valve status includes the following steps:

[0044] Step B1: The user sends valve control instructions to the IoT platform through the mobile client;

[0045] Step B2: The IoT platform sends the valve control command to the pipeline control valve through the wireless transmission module;

[0046] Step B3: The STM32 microcontroller controls the stepper motor to execute the corresponding number of operation steps according to the valve control instruction.

[0047] According to the above design, when the IoT platform detects that the valve control command issued is inconsistent with the current valve opening and the current operating status of the valve received at the next moment, it indicates that the output of the stepper motor cannot be effectively responded to. The valve is judged to be in a fault state and the mobile client is notified so that the maintenance personnel can handle it in time.

[0048] This patent is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of pipeline control valves based on the Internet of Things platform and their working methods under the inspiration of this patent. All equal changes and modifications made according to the scope of the patent application of the present invention should be covered by this patent.

Claims

1. A pipeline control valve based on the Internet of Things platform, characterized in that: include: A valve mechanism, and an STM32 controller, a wireless transmission module and a stepper motor arranged on the valve mechanism and electrically connected; the output shaft of the stepper motor is connected to the outer nut of the valve stem to drive the valve stem to perform axial movement; the STM32 controller is connected to the Internet of Things platform via the wireless transmission module; The valve mechanism comprises: a valve cover, an upper valve body, a lower valve body, a valve seat, a bearing, a valve stem and a valve stem outer nut; The valve stem outer nut is arranged on the top of the valve stem and passes through two bearings installed horizontally and parallelly on the upper valve body; the valve cover is installed on the top of the upper valve body; The STM32 controller is installed on the valve cover, and the wireless transmission module is fixedly installed on the circuit board where the STM32 controller is located; the stepper motor is installed downward above the valve stem outer nut, and its output shaft is meshed with the valve stem outer nut; at least one battery connected to the STM32 controller is arranged between the valve cover and the upper valve body; The valve stem is provided with a guide key, which is installed on the keyway of the valve stem to limit the axial movement of the valve stem; an oil cup is provided between the two bearings; the bearing is fixed by a bearing gland, and the bearing gland is reinforced by a set screw; in the lower valve body, packing and a packing gland are used to seal the drainage pipeline of the valve; the upper valve body and the lower valve body are fixed by studs.

2. The pipeline control valve based on the Internet of Things platform according to claim 1 is characterized in that: The bearing is a deep groove ball bearing, and the oil cup is threadedly connected to the upper valve body; two sealing rings are arranged on the valve stem outer nut to seal the bearing.

3. The pipeline control valve based on the Internet of Things platform according to claim 1 is characterized in that: The wireless transmission module adopts ESP8266-01S WIFI module.

4. The working method of the pipeline control valve based on the Internet of Things platform according to any one of claims 1 to 3 is characterized in that: The valve status is determined by recording the number of steps of the stepper motor.

5. The working method of the pipeline control valve based on the Internet of Things platform according to claim 4 is characterized in that: The following steps are involved: Step A1: calibrate the stepper motor to obtain the current state parameters of the stepper motor, and convert the current state parameters of the stepper motor to obtain the current opening of the valve and the current operating state of the valve; Step A2: Upload the data of valve opening and current operating status to the Internet of Things platform through the wireless transmission module; Step A3: The IoT platform reports the valve opening information and operating status to the mobile client connected to the IoT platform.

6. The working method of the pipeline control valve based on the Internet of Things platform according to claim 5 is characterized in that: The following steps are involved: Step B1: The user sends valve control instructions to the IoT platform through the mobile client; Step B2: The IoT platform sends the valve control command to the pipeline control valve through the wireless transmission module; Step B3: The STM32 microcontroller controls the stepper motor to execute the corresponding number of operation steps according to the valve control instruction.

7. The working method of the pipeline control valve based on the Internet of Things platform according to claim 6 is characterized in that: When the Internet of Things platform detects that the issued valve control instruction is inconsistent with the current valve opening and the current operating state of the valve at the next moment, it determines that the valve is in a fault state and notifies the mobile client.

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