Valve or liquid level meter control device
By using a wireless connection structure between the central control cabinet and the sub-control terminals, and utilizing LoRa and WiFi signals, the control speed and interference problems of valve and level gauge control devices under complex working conditions in existing technologies have been solved, and stable and rapid control of multiple devices has been achieved.
Patent Information
- Application Number
- CN202520003064.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Existing valve and level gauge control devices suffer from unsatisfactory control speed and mutual interference when multiple devices are connected under complex operating conditions, resulting in low control efficiency and information acquisition failure.
It adopts a wireless connection structure between the central control cabinet and the sub-control terminals. The sub-control terminals include an explosion-proof shell, processor, switch, serial port server, and wireless transmitting and receiving devices. They communicate via LoRa and WiFi signals, supporting simultaneous connection and long-distance communication of multiple valves or level gauges. Combined with self-contained power supply and dustproof design, it improves stability and speed.
It enables stable and rapid control of multiple valves or level gauges, reduces the number of terminals, improves control stability and speed, and solves the interference problem when multiple devices are connected.
Smart Images
Figure CN223635475U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of automation control especially relates to a control device for valve and liquid level meter under complex working condition. BACKGROUND
[0002] The current valve and liquid level meter control device, generally, has the problems of non-ideal control speed and mutual interference when connecting multiple devices. These problems directly lead to slow control speed, no response, and information acquisition failure, which seriously affects the efficiency and accuracy of valve and liquid level meter control, and cannot meet the demand for stable and fast control of multiple valves or multiple liquid level meters under complex working conditions. SUMMARY
[0003] To solve the problems in the prior art, the utility model aims to provide a valve or liquid level meter control device, which comprises a master control cabinet and a sub-control terminal, the master control cabinet and the sub-control terminal are connected wirelessly, the sub-control terminal comprises a closed explosion-proof shell, a valve or liquid level meter interface arranged at the bottom of the shell, a processor located in the shell, a switch connected to the processor, and a serial server connected to the processor and the valve or liquid level meter interface, and further comprises a wireless transceiver connected to the processor, the master control cabinet comprises a processor, a switch connected to the processor, and a wireless transceiver and a touch screen connected to the processor.
[0004] As a further improvement of the utility model, the wireless transceiver of the sub-control terminal further comprises an interface connected to an antenna and arranged at the top of the shell.
[0005] As a further improvement of the utility model, the interface comprises a WiFi antenna interface and a lora antenna interface.
[0006] As a further improvement of the utility model, the wireless transceiver comprises a wireless AP transceiver and a Lora transceiver, the AP transceiver and the Lora transceiver are connected to the WiFi antenna interface and the lora antenna interface respectively.
[0007] As a further improvement of the utility model, the master control cabinet and the sub-control terminal further comprise a self-contained power supply and an external power supply connected to a circuit, the self-contained power supply is further provided with a charging interface, and the charging interface of the sub-control terminal is arranged at the bottom of the shell.
[0008] As a further improvement of the utility model, the shell of the sub-control terminal comprises an openable dust cover arranged at the lower end of the shell, and the dust cover is further provided with a viewing window.
[0009] As a further improvement of the utility model, the dust cover is provided with a locking opening device.
[0010] As a further improvement of the utility model, the outer shell of the sub-control terminal is further provided with a rain cover.
[0011] As a further improvement of the utility model, the outer shell of the sub-control terminal is further provided with a rain cover.
[0012] As a further improvement of the utility model, the outer shell of the sub-control terminal is further provided with a rain cover.
[0013] The valve or liquid level meter control device of the utility model, the sub-control terminal is responsible for obtaining the state information of the valve and the liquid level meter, and can control the opening and closing of the valve according to the command of the general control cabinet, and can send the state information of the valve and the liquid level meter back to the general control cabinet. The general control cabinet is responsible for issuing commands to the sub-control terminal, and receiving the information of the sub-control terminal (including the state information of the valve and the liquid level meter), and issuing commands to the sub-control terminal according to these information or manual information sent to the general control cabinet through the Android touch screen, so as to form a closed loop control with the general control cabinet as the core. It has the advantages and positive effects of:
[0014] 1. The sub-control terminal can be provided with multiple interfaces, preferably 10 quick plug interfaces, which can simultaneously connect 10 valves or liquid level meters near the terminal, reducing the number of terminals used. At the same time, Lora and WiFi signal control are used inside, the high bandwidth of WiFi can greatly improve the stable connection number of the sub-control terminal and the general control cabinet, and Lora communication can greatly improve the communication distance of the sub-control terminal and the general control cabinet, effectively solving the interference problem when multiple devices are connected, and improving the stability of control.
[0015] 2. Through the cooperative work of the sub-control terminal and the general control cabinet, the problem of unsatisfactory control speed of the existing control device is overcome, and stable and rapid control of multiple valves or multiple liquid level meters is realized. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.
[0017] Figure 1 It is the overall structure schematic view of the sub-control terminal of the utility model;
[0018] Figure 2This is a bottom view of the sub-control terminal of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the distributed control terminal of this utility model;
[0020] In the diagram, 1-valve or level gauge interface, 2-housing, 3-viewing window, 4-viewing window opening, 5-locking and opening device, 6-dust cover, 7-rain cover. Detailed Implementation
[0021] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.
[0022] In the various figures of this application, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structures or parts; therefore, they are only used to illustrate the basic structure of the subject matter of this application.
[0023] Furthermore, terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms of spatial relative position may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figures is flipped, a unit described as being “below” or “under” other units or features would be located “above” other units or features. Therefore, the exemplary term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein shall be interpreted accordingly.
[0024] like Figure 1 As shown, based on site requirements, the sub-control terminals are placed in suitable locations near the valves and level gauges, and connected to the valves, level gauges, and corresponding power supplies via the quick-connect terminals at the bottom. The main control cabinet is connected to a 220V or 380V power supply and connected to the corresponding antenna via the antenna interface.
[0025] Turn on the main control cabinet and the sub-control terminals, and perform system initialization and parameter configuration through the Android touch screen of the main control cabinet, including setting the number and connection parameters of each sub-control terminal.
[0026] In the normal operation process, the sub-control terminal obtains the state information of the valve and the liquid level meter through the serial port server, processes it through the CPU, and sends it to the master control cabinet through the wireless AP or Lora communication device. After the CPU of the master control cabinet receives the information, it combines the manual instructions on the touch screen to perform calculations, and then sends control instructions to the sub-control terminal through wireless communication. The sub-control terminal executes the instructions to control the opening and closing of the valve.
[0027] Specifically, the sub-control terminal shell adopts an explosion-proof design. As shown in Figure 3 the bottom has 12 quick plug terminals, of which 10 are used to connect the valve or liquid level meter, 1 is used to connect the 24V power supply, and 1 is used to connect the 220V or 480V power supply. The top of the cabinet is provided with 2 antenna interfaces. The sub-control terminal is provided with a switching power supply, a CPU, a switch, a serial port server, a wireless AP, and a lora communication device.
[0028] Switching power supply: provides power for the sub-control terminal when powered by 220V or 380V.
[0029] CPU: as the core of the sub-control terminal, responsible for valve control and data calculation.
[0030] Switch: responsible for network connection of wireless AP, CPU, and serial port server.
[0031] Serial port server: on the one hand, it is responsible for connecting the valve or liquid level meter to the CPU, acting as a bridge; on the other hand, it provides protection function for the CPU when abnormal signals occur at the valve wiring.
[0032] Wireless AP: provides high-speed WiFi communication capability for the sub-control terminal.
[0033] Lora communication device: responsible for providing long-distance communication capability for the sub-control terminal.
[0034] The master control cabinet is provided with a switching power supply, a CPU, a lithium battery, a charger, a wireless AP, a lora communication device, and an Android touch screen. The cabinet is provided with one 220V wiring socket, one 380V wiring socket, one lora antenna interface, and one WiFi antenna interface.
[0035] Switching power supply: provides power for the master control cabinet when connected to 220V or 380V power supply.
[0036] CPU: responsible for sending appropriate instructions to the sub-control terminal after processing the information fed back by the sub-control terminal and the control information of the Android touch screen.
[0037] Lithium battery: responsible for providing backup power.
[0038] Charger: responsible for charging the battery.
[0039] Wireless AP: responsible for connecting the sub-control terminal that needs high-speed communication in close range.
[0040] Lora communication device: responsible for connecting the sub-control terminal in long distance.
[0041] Android touch screen: responsible for the interaction between the person and the master control cabinet, and sends the corresponding control information to the CPU.
[0042] As shown in Figure 2 , Figure 3 , the valve or liquid level meter control device as described above, comprising a master control cabinet and a sub-control terminal, the master control cabinet and the sub-control terminal are connected wirelessly, the sub-control terminal comprises a closed explosion-proof shell, a valve or liquid level meter interface arranged at the bottom of the shell, and a processor located inside the shell, a switch connected to the processor, and a serial server connected to the processor and the valve or liquid level meter interface, further comprising a wireless transceiver connected to the processor, the master control cabinet comprises a processor, a switch connected to the processor, and a wireless transceiver and a touch screen connected to the processor. The wireless transceiver of the sub-control terminal further comprises an antenna connected through an interface arranged at the top of the shell. The interface comprises a WiFi antenna interface and a lora antenna interface. The wireless transceiver comprises a wireless AP transceiver and a Lora transceiver, the AP transceiver and the Lora transceiver are connected to the WiFi antenna interface and the lora antenna interface respectively. The master control cabinet and the sub-control terminal further comprise a self-contained power supply and an external power supply connected to the circuit, the self-contained power supply is further provided with a charging interface, and the charging interface of the sub-control terminal is arranged at the bottom of the shell.
[0043] As shown in Figure 1 , the shell of the sub-control terminal comprises an openable dust cover arranged at the lower end thereof, and the dust cover is further provided with a viewing window. The dust cover is provided with a locking opening device. The periphery of the shell of the sub-control terminal is further provided with a rain cover. The top end of the shell of the sub-control terminal is further provided with a fixedly connected lifting ring. The two sides of the shell of the sub-control terminal are further provided with fixedly connected handles.
Claims
1. A valve or liquid level gauge control device comprising a master control cabinet and a sub-control terminal, the master control cabinet and the sub-control terminal being connected by wireless connection, characterized in that, The sub-control terminal comprises a closed explosion-proof shell, a valve or liquid level meter interface arranged at the bottom of the shell, a processor arranged in the shell, a switch connected to the processor, and a serial server connected to the processor and the valve or liquid level meter interface.
2. A valve or level gauge control device as claimed in claim 1, characterised in that, The wireless transceiver of the sub-control terminal further comprises an antenna connected to an interface arranged at the top of the shell.
3. A valve or level gauge control device as claimed in claim 2, characterised in that, The interface comprises a WiFi antenna interface and a lora antenna interface.
4. A valve or level gauge control device as claimed in claim 3, characterised in that, The wireless transceiver comprises a wireless AP transceiver and a Lora transceiver, and the AP transceiver and the Lora transceiver are connected to the WiFi antenna interface and the lora antenna interface respectively.
5. The valve or level gauge control device of claim 1, wherein The main control cabinet and the sub-control terminal further comprise a self-provided power supply and an external power supply connected to a circuit, and the self-provided power supply is further provided with a charging interface, and the charging interface of the sub-control terminal is arranged at the bottom of the shell.
6. The valve or level gauge control device of claim 1, wherein The shell of the sub-control terminal comprises an openable dust cover arranged at the lower end thereof, and the dust cover is further provided with a viewing window.
7. A valve or level gauge control device as claimed in claim 6, characterised in that, The dust cover is provided with a locking opening device.
8. The valve or level gauge control device of claim 1, wherein The outer edge of the shell of the sub-control terminal is further provided with a rain cover.
9. The valve or level gauge control device of claim 1, wherein The top end of the shell of the sub-control terminal is further provided with a fixedly connected lifting ring.
10. The valve or level gauge control device of claim 7, wherein The two sides of the shell of the sub-control terminal are further provided with fixedly connected handles.