Intelligent data acquisition and remote transmission system based on 485 wireless unvarnished transmission

Abstract

The utility model belongs to the technical field of railway water supply and drainage, and particularly relates to an intelligent data acquisition and remote transmission system based on 485 wireless unvarnished transmission, which comprises an electric quantity acquisition module, a pump valve control module, a water quantity acquisition module and a pressure liquid level acquisition module. The electric quantity acquisition module is connected with the intelligent electric meter and transmits data to the central control base station; the pump valve control module is used for controlling remote start and stop of a water supply and drainage pump, remote opening and closing of a valve and collection control of a liquid level, and then transmitting data to the central control base station; the water quantity acquisition module is connected with the wireless water meter acquisition module, the wireless water meter acquisition module is used for acquiring instantaneous flow and accumulated flow data of a wireless water meter, and the water quantity acquisition module transmits the data to the central control base station; the pressure and liquid level acquisition module is used for acquiring and controlling pressure and liquid level and transmitting data to the central control base station. According to the utility model, a wiring-free wireless unvarnished transmission data acquisition technology is adopted, hard wiring construction is not needed, manpower and material resources are saved, and construction difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of railway water supply and drainage technology, and in particular relates to a data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission. Background Technology

[0002] With societal development, the variety of wireless sensors and instruments is increasing, and most enterprises are demanding higher standards for wireless communication. Automation technologies in sectors like railway water supply and drainage are constantly being upgraded, leading to increasingly stringent requirements for wireless data acquisition and remote automatic control. In water supply and drainage automatic control and data acquisition systems, much data, such as water level, pressure, and flow rate, needs to be acquired on-site, often requiring wiring. While 4-20mA or 0-10V signals are generally the basic acquisition benchmark, in some scenarios, hard-wired installation is complex and resource-intensive. Furthermore, the large number and scattered distribution of field instruments and sensors, coupled with limited power supply points, further complicate wiring and construction. Therefore, designing a wireless transparent data acquisition and remote transmission system that eliminates the need for hard-wired installation and allows for unified command issuance is of significant practical importance. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model provides a data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission.

[0004] The technical solution adopted by this utility model to solve this problem is:

[0005] A data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission includes a power acquisition module, a pump and valve control module, a water volume acquisition module, and a pressure and liquid level acquisition module, wherein:

[0006] The power acquisition module connects to the smart meter and then transmits the data to the central control base station.

[0007] The pump and valve control module is used to control the remote start and stop of water supply and drainage pumps, the remote opening and closing of valves, and the acquisition and control of liquid level, and then transmits the data to the central control base station.

[0008] A water volume acquisition module is connected to a wireless water meter acquisition module. The wireless water meter acquisition module is used to collect the instantaneous flow rate and cumulative flow rate data of the wireless water meter. The water volume acquisition module then transmits the data to the central control base station.

[0009] The pressure and liquid level acquisition module is used to acquire and control pressure and liquid level, and then transmit the data to the central control base station.

[0010] Preferably, the power acquisition module includes a power acquisition terminal, the smart meter is connected to the power acquisition terminal via RS485 wireless transparent transmission technology, and the power acquisition terminal is connected to the central control base station via a network cable.

[0011] More preferably, the pump valve control module includes a pump valve control box, which is connected to the central control base station via a direct network cable connection or wireless transparent transmission.

[0012] More preferably, a PLC is installed in the pump and valve control box as the main control unit, and the pump and valve are remotely controlled via remote I / O.

[0013] More preferably, the water volume acquisition module includes a water volume acquisition terminal, which is connected to the central control base station via a direct network cable connection or wireless transmission. The water volume acquisition terminal is connected to the wireless water meter acquisition module via wireless transmission, and the wireless water meter is connected to the wireless water meter acquisition module via RS485 wireless transmission technology.

[0014] More preferably, the wireless water meter acquisition module includes a waterproof control box, a central control unit, a boost and voltage stabilization unit, a 3.6V lithium battery, a 12V lithium battery, and a 433MHz dedicated transparent transmission antenna.

[0015] More preferably, the 3.6V lithium battery supplies power to the central control unit through a boost and voltage regulation unit. The central control unit is connected to multiple remote communication interfaces on the remote transmission module via a 485 communication line. The remote transmission module is continuously powered by a 12V lithium battery.

[0016] More preferably, the pressure level acquisition module includes a pressure level acquisition terminal, which is connected to the central control base station via a direct network cable connection or wireless transmission.

[0017] More preferably, the pressure and liquid level acquisition terminal is equipped with a PLC as the main control unit, which transmits the pressure and liquid level signals (4-20mA / 0-10V) to the terminal.

[0018] More preferably, the data acquisition terminal includes a communication base station, a circuit breaker, a central controller CPU, a lightning protection device, a 24V DC switching power supply, and a relay.

[0019] More preferably, the central control base station is connected to a host computer.

[0020] The advantages and positive effects of this utility model are as follows: This utility model adopts wireless transparent data acquisition technology without wiring, and issues instructions uniformly through a concentrator to avoid data duplication and transmission conflicts. It adopts low-power wireless transparent transmission technology, which can effectively reduce power consumption and enhance battery life. It saves manpower and resources and reduces construction difficulty by eliminating the need for hard wiring. Attached Figure Description

[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this utility model. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0022] Figure 1 This is a system architecture diagram of this utility model;

[0023] Figure 2 This is a layout diagram of the data acquisition terminal;

[0024] Figure 3 This is a wiring diagram of the wireless water meter data acquisition module;

[0025] Figure 4 It is the interface display in the host computer. Figure 1 ;

[0026] Figure 5 It is the interface display in the host computer. Figure 2 ;

[0027] Figure 6 This is a screenshot of the interface of the software information window in this utility model.

[0028] Figure 7 This is the circuit layout diagram of the pump and valve control box;

[0029] Figure 8 This is the circuit layout diagram of the pressure level control box;

[0030] Figure 9 This is the circuit layout diagram of the water and electricity data acquisition terminal. Detailed Implementation

[0031] First, it should be noted that the specific structure, features, and advantages of this utility model will be described in detail below by way of examples. However, all descriptions are for illustrative purposes only and should not be construed as limiting the utility model in any way. Furthermore, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the accompanying drawings, can still be arbitrarily combined or deleted among these technical features (or their equivalents) to obtain more other embodiments of this utility model that may not be directly mentioned herein. Additionally, for the sake of simplifying the drawings, the same or similar technical features may be indicated only in one place in the same drawing.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The utility model will now be described in detail with reference to the accompanying drawings. Example 1

[0033] A data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission includes a power acquisition module, a pump and valve control module, a pressure and liquid level acquisition module, and a pressure and liquid level acquisition module, wherein:

[0034] The power acquisition module connects to the smart meter and then transmits the data to the central control base station.

[0035] The pump and valve control module is used to control the remote start and stop of water supply and drainage pumps, the remote opening and closing of valves, and the acquisition and control of liquid level, and then transmits the data to the central control base station.

[0036] A water volume acquisition module is connected to a wireless water meter acquisition module. The wireless water meter acquisition module is used to collect the instantaneous flow rate and cumulative flow rate data of the wireless water meter. The water volume acquisition module then transmits the data to the central control base station.

[0037] The pressure and liquid level acquisition module is used to acquire and control pressure and liquid level, and then transmit the data to the central control base station.

[0038] This embodiment relates to a data acquisition system based on pulse, RTD, 4-20mA, and 0-10V signals converted to RS-485 wireless transmission, suitable for data acquisition from water flow meters, temperature sensors, pressure sensors, and level sensors. The system architecture consists of four main acquisition and control modules: a power acquisition module, a pump and valve control module, a pressure and level acquisition module, and a pressure and level acquisition module. Specifically:

[0039] The power acquisition module includes a power acquisition terminal, which connects to the smart meter via RS485 and transmits data such as power consumption and three-phase voltage to the power acquisition terminal. The power acquisition terminal then transmits the data to the central control base station via a network cable. The central control base station then displays the data and generates relevant reports through a host computer.

[0040] The pump and valve control module includes a pump and valve control box. This box primarily controls the remote start and stop of water supply and drainage pumps, the remote opening and closing of valves, and the acquisition and control of liquid levels. A PLC is installed in the control box as the main control unit, which remotely controls the pumps and valves via remote I / O. Data is then transmitted to the central control base station via direct network cable connection (Profinet protocol) or wireless transmission. The central control base station then controls the pumps and valves and acquires related data via a host computer. In this embodiment, the pump and valve control box is wirelessly connected to the central control base station via a RS-485 module to control the remote start and stop of valves and pumps, and to acquire liquid levels.

[0041] The water volume acquisition module includes a water volume acquisition terminal. The water volume acquisition terminal, as an intermediate layer, is mainly responsible for collecting the instantaneous flow and cumulative flow of the water meter to the wireless water meter acquisition module. The wireless water meter connects to the wireless water meter acquisition module via RS485 wireless transparent transmission technology. The wireless water meter acquisition module then collects the data to the water volume acquisition terminal via RS485 wireless transparent transmission technology. The water volume acquisition terminal then transmits the data to the central control base station via direct network cable connection (Profinet protocol) or wireless transparent transmission. The central control base station then displays the data and generates relevant reports through the host computer.

[0042] The pressure and liquid level acquisition module includes a pressure and liquid level acquisition terminal (pressure and liquid level control box). The pressure and liquid level acquisition terminal transmits pressure and liquid level signal data such as 4-20mA / 0-10V to the terminal by installing a PLC system on the terminal. The pressure and liquid level acquisition terminal then transmits the data to the central control base station via a network cable. The central control base station then displays the data and generates relevant reports through a host computer.

[0043] Advantages and features compared to existing products:

[0044] 1) The adoption of low-power wireless transparent transmission technology can effectively reduce power consumption and enhance battery life.

[0045] 2) Send instructions through the base station to avoid data duplication and transmission conflicts.

[0046] 3) Transmission power is selectable, and signal strength is adjustable.

[0047] 4) No wiring or maintenance required; the battery only needs to be replaced every 2-3 years depending on the sampling frequency.

[0048] 5) Compared with other communication technologies, wireless transparent transmission technology has high data stability, simple transmission message format, all host computer interfaces are built-in and fully developed, and direct protocol conversion is all that is needed.

[0049] This technical solution adopts wireless transparent data acquisition technology without wiring. It uses a concentrator to uniformly issue commands, avoiding data duplication and transmission conflicts. The low-power wireless transparent transmission technology can effectively reduce power consumption and extend battery life. It eliminates the need for hard wiring, saving manpower and resources and reducing construction difficulty.

[0050] Furthermore, in this embodiment, the power acquisition terminal, pump and valve control box, water volume acquisition terminal, and pressure and level acquisition terminal can be collectively referred to as the acquisition terminal. The acquisition terminal consists of several major components, including a communication base station, circuit breaker, central controller CPU, lightning protection device, 24V DC switching power supply, and relays. All control is uniformly controlled and output by the central controller CPU, and all communication is handled by the communication base station. Figure 2 , 7 As shown in Figure 9, the data signal is transmitted by the antenna. The acquisition terminal is equipped with a lightning protection device. The 24V DC switching power supply is responsible for powering the central controller CPU, communication base station, circuit breaker, lightning protection device, etc. All acquired data is first connected to the central controller CPU. The communication base station is responsible for data transmission and docking with the central control room. Relays and circuit breakers are mainly used to control the start and stop of pumps, valves, etc.

[0051] Furthermore, in this embodiment, the wireless water meter acquisition module may be composed of a waterproof control box, an ultra-low power central control unit, a boost voltage regulator unit, a 3.6V lithium battery, a 12V lithium battery, and a 433MHz dedicated transparent antenna.

[0052] Wireless water meter data acquisition module workflow: The 3.6V lithium battery powers the central control unit via a boost and voltage regulator. The central control unit connects to the wireless water meter's remote data communication interface for water volume, electricity, pressure, and liquid level via a 485 communication line. The remote transmission module is continuously powered by a 12V lithium battery. Throughout the system, the remote transmission module does not continuously transmit data to the data acquisition unit; instead, it periodically transmits data such as water volume, electricity, and pressure to the data acquisition unit at set time intervals. When not transmitting messages, the module is in a shutdown / dormant state, thus extending the lithium battery's lifespan. The transparent transmission technology uses a half-duplex communication mode. The entire acquisition process is centrally managed by the concentrator, which issues unified commands. After receiving the commands, the acquisition module transmits real-time and cumulative data to the concentrator in message format.

[0053] Example 2: Software Settings

[0054] Each acquisition module requires individual parameter settings:

[0055] Serial port number: No need to set the serial port number, the default is fine.

[0056] Baud rate: The data transmission rate of the module; all modules should have the same baud rate.

[0057] Check bit: Set the check bit to no check.

[0058] Data bits: Data bit setting bit 8.

[0059] Stop bit: The stop bit is set to 1.

[0060] After setting it up, click to open the serial port, then select to search for devices. Once the device is connected, the debugging information window on the right side of the software will display the information and status of the currently connected device.

[0061] Module address: The module's communication address number, 1-256.

[0062] Communication Channel: This is used for communication testing and does not need to be set in actual applications.

[0063] Transmission power: Transmission power is available in 2dBm, 5dBm, 10dBm and 20dBm. Higher power consumes more power for the battery, but the transmission distance is longer. When set to 20dBm, the transmission distance can reach 1 kilometer in the absence of obstructions.

[0064] Application example:

[0065] For example, one of the data intelligent acquisition and remote transmission systems based on RS-485 wireless transparent transmission described in Embodiments 1 and 2 above can be applied to a water supply station. This system monitors parameters such as the water level in the booster pump station's water tank, the operating status of the pumps, and the electrical load. The water supply control cabinet controls the pumps to operate in rotation and activate standby pumps as needed, thus rationally scheduling pump operation. Simultaneously, through the station's network, the operating status of the pumps is reflected in real-time on the central host computer of the water supply station, allowing for remote monitoring of the pumps. The host computer can display real-time parameters such as the water tank level, the cumulative flow from the station's remote water meter, and monitor the pump's on / off status.

[0066] The above embodiments have provided a detailed description of the present invention, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission, characterized by: The utility model relates to a central control system of water supply and drainage, including: Electric quantity acquisition module is connected intelligent electric meter, and data transmission is carried out to central control base station, and the electric quantity acquisition module includes electric quantity acquisition terminal, and the intelligent electric meter is connected electric quantity acquisition terminal through RS485 wireless transparent transmission technology, and the electric quantity acquisition terminal is connected central control base station through network cable, Pump valve control module is used for controlling the remote start of water supply and drainage pump, the remote switch of valve and the collection control of liquid level, and data transmission is carried out to central control base station, and the pump valve control module includes pump valve control box, and the pump valve control box is connected central control base station through network cable direct connection or wireless transparent transmission, Water quantity acquisition module is connected wireless water meter acquisition module, and the wireless water meter acquisition module is used for collecting instantaneous flow, cumulative flow data of wireless water meter, and water quantity acquisition module data transmission is carried out to central control base station, and the water quantity acquisition module includes water quantity acquisition terminal, and the water quantity acquisition terminal is connected central control base station through network cable direct connection or wireless transparent transmission, and the water quantity acquisition terminal is connected wireless water meter acquisition module through wireless transparent transmission, and the wireless water meter is connected wireless water meter acquisition module through RS485 wireless transparent transmission technology, Pressure liquid level acquisition module is used for the collection control of pressure, liquid level, and data transmission is carried out to central control base station, and the pressure liquid level acquisition module includes pressure liquid level acquisition terminal, and the pressure liquid level acquisition terminal is connected central control base station through network cable direct connection or wireless transparent transmission. 2.The data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission according to claim 1, characterized in that: PLC is installed in the pump valve control box as the main control unit, and the pump valve is controlled remotely through remote IO. 3.The data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission according to claim 1, characterized in that: The wireless water meter acquisition module includes waterproof control box, central control unit, boost voltage stabilizing unit, 3.6V lithium battery, 12V lithium battery and 433MHZ special transparent antenna.

4. The data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission according to claim 3, characterized in that: The 3.6V lithium battery is powered to the central control unit through the boost voltage stabilizing unit, and the central control unit is connected with multiple remote communication interfaces on the remote module through 485 communication line, and the power supply of the remote module is continuously powered by the 12V lithium battery.

5. The data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission according to any one of claims 1-4, characterized in that: The acquisition terminal includes communication base station, circuit breaker, central controller CPU, lightning protection device, 24V DC switching power supply and relay.

6. The data intelligent acquisition and remote transmission system based on 485 wireless transparent transmission according to claim 1, characterized in that: The central control base station is connected with host computer.

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