Intelligent electromagnetic flowmeter based on WIA-PA wireless communication

Abstract

The utility model relates to an intelligent electromagnetic flowmeter based on WIA-PA wireless communication, comprising a sensor and a converter, the WIA-PA wireless communication module is arranged on the converter circuit board through an assembly type structure, the WIA-PA wireless communication module shares a power supply with the converter, data interaction is realized through USART serial ports and AT instructions, and a wireless antenna is led out to the outside of the converter metal shell through a shielding wire to ensure signal transmission, the system adopts a two-layer network topology structure combining a star type and a mesh, data flow is transmitted through a flowmeter - routing node - gateway - host computer / cloud, remote parameter configuration, data timing reporting and low-power mode setting are supported, signal cables need not be laid, installation and maintenance costs are reduced, and the utility model is suitable for complex scenes such as remote, high-risk and corrosive scenes, supports multi-device networking and centralized monitoring, improves inspection efficiency, flow data and alarm information can be viewed in real time through a PC / mobile phone terminal, and the utility model meets the intelligent management demand of industrial internet of things.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic flowmeter design, specifically relating to an intelligent electromagnetic flowmeter based on WIA-PA wireless communication. Background Technology

[0002] Electromagnetic flowmeters are common measuring instruments in industrial systems. They consist of two parts: a sensor and a converter. The sensor is based on Faraday's principle of electromagnetic induction. When a conductive liquid flows through a magnetic field, an induced electromotive force is generated, and the sensor is responsible for collecting this induced electromotive force. The converter is responsible for amplifying and filtering the physical signal collected by the sensor, converting it into a digital signal, and providing an output interface. Most electromagnetic flowmeters have wired RS485, 4~20mA, or wired output methods.

[0003] Existing flow meters provide wired signal outputs, typically requiring the laying of signal cables. This wiring is complex, costly, and has limited transmission distance. Due to installation location restrictions and cable length limitations, they are unsuitable for remote or high-risk scenarios. They also fail to meet the needs of the Internet of Things (IoT). To meet IoT requirements, an external RTU device is needed, which undoubtedly increases the operating cost of electromagnetic flow meters. In harsh environments such as oil fields and wastewater treatment plants, the difficulty of wiring and the susceptibility of cables to corrosion and human damage lead to high maintenance costs. In environments with numerous and widely distributed instruments, this significantly increases the workload for flow data monitoring and inspection.

[0004] Therefore, in order to overcome the limitations of existing wired communication in electromagnetic flowmeters, an electromagnetic flowmeter with an integrated wireless communication module is provided to realize wireless data transmission, improve installation flexibility and system reliability. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model provides an intelligent electromagnetic flow meter based on WIA-PA wireless communication, which transmits the data of the electromagnetic flow meter to the device terminal wirelessly, reducing installation costs and improving inspection efficiency.

[0006] The technical solution adopted in this utility model is: A smart electromagnetic flowmeter based on WIA-PA wireless communication includes a sensor and a converter. The sensor is connected to the converter. The converter circuit board is equipped with a needle holder, a microcontroller, and a power supply. The WIA-PA wireless communication module is connected to the needle holder through a pin, which abuts against the converter circuit board.

[0007] Both the WIA-PA wireless communication module and the converter are connected to a power source.

[0008] The WIA-PA wireless communication module has screw holes diagonally provided, and the WIA-PA wireless communication module is fixedly connected to the converter circuit board by screws.

[0009] The WIA-PA wireless communication module interacts with the converter via a USART serial port located on the converter's circuit board.

[0010] The WIA-PA wireless communication module is connected to the wireless transmission antenna via a shielded wire. One end of the shielded wire is connected to the wireless communication module, and the other end is connected to the transmission antenna.

[0011] The wireless transmission antenna is led out to the outside of the converter housing via a shielded wire.

[0012] The WIA-PA wireless communication module uses AT commands to upload traffic data, send device parameters, and transmit control commands.

[0013] The WIA-PA wireless communication module is equipped with a metal shielding device.

[0014] The WIA-PA wireless communication module is connected to the microcontroller.

[0015] The WIA-PA wireless communication module connects the electromagnetic flowmeter's data to a two-layer network topology consisting of a gateway and routing devices, enabling wireless communication with the host computer. In the two-layer network topology, the first layer is a mesh structure composed of the gateway and routing devices, and the second layer is a star structure composed of the routing devices, field devices, and handheld devices.

[0016] This invention provides an intelligent electromagnetic flowmeter based on WIA-PA wireless communication, which has the following advantages: 1. Reduce installation and maintenance costs: It eliminates the cost of purchasing and laying materials such as cables, junction boxes, and conduits, making it especially suitable for long-distance and complex terrain scenarios, avoiding the high costs associated with cabling. There is no need to regularly check for aging and corrosion of the lines, reducing the amount of maintenance work in corrosive environments such as chemical and petroleum industries, and lowering the cost of manual inspections; Adding a new flow meter only requires connection to a wireless network, without the need to modify existing infrastructure, significantly improving deployment efficiency.

[0017] 2. Enhance usability and environmental adaptability: It eliminates the limitations of wired cabling and can be flexibly deployed in remote, high-risk, space-constrained, or difficult-to-lay-cable scenarios, solving the problem of limited installation locations for traditional equipment; The wireless module is fixed by a slot and screws, rather than by soldering a circuit board, which allows for easy replacement of other communication modules in the future to adapt to the communication needs of different scenarios and make maintenance more flexible. The metal shielding design enhances the resistance to electromagnetic interference, adapts to the complex electromagnetic environment of industrial sites, and ensures the stability of data transmission.

[0018] 3. Optimize data management and IoT adaptation Traffic data and alarm fault information are uploaded to the cloud platform in real time, supporting remote viewing and historical data analysis on PC / mobile devices, realizing centralized intelligent monitoring and improving inspection efficiency; It supports multi-device networking and can integrate data from different types of industrial equipment into a smart data platform to meet the needs of industrial IoT construction and help intelligent management. The data includes timestamps, device IDs, CRC checksums, and other information. It supports point-to-point parameter configuration and customizable reporting cycles, ensuring secure, reliable, flexible, and controllable data transmission. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the internal structure of the converter of this utility model; Figure 2 This is a side view of the converter circuit board of this utility model; Figure 3 The topology network for implementing communication in the WIA-PA wireless communication module of this utility model; Figure 4 This is a circuit schematic diagram of the WIA-PA wireless communication module of this utility model; Figure 5 This is a flowchart illustrating the data interaction process of the WIA-PA module of this utility model.

[0021] In the diagram: 1. Converter circuit board; 2. Pin header; 3. Microcontroller; 4. Power supply; 5. WIA-PA wireless communication module; 6. Pin; 7. Screw hole; 8. USART serial port; 9. Shielded cable; 10. Wireless transmission antenna; 11. Converter housing; 12. Metal shielding device. Detailed Implementation

[0022] like Figure 1 As shown, an intelligent electromagnetic flowmeter based on WIA-PA wireless communication includes a sensor and a converter. The sensor is connected to the converter. The converter circuit board 1 is provided with a needle holder 2, a microcontroller 3, and a power supply 4. The WIA-PA wireless communication module 5 is connected to the needle holder 2 through multiple pins 6, and the pins 6 abut against the converter circuit board 1.

[0023] Both the WIA-PA wireless communication module 5 and the converter are connected to the power supply 4.

[0024] The modular structure of the WIA-PA wireless communication module 5 allows for the replacement of different types of wireless communication modules without altering the converter circuit board.

[0025] The WIA-PA wireless communication module 5 has screw holes 7 diagonally provided, and the WIA-PA wireless communication module 5 is fixedly connected to the converter circuit board 1 by screws.

[0026] The WIA-PA wireless communication module 5 interacts with the converter via the USART serial port 8 located on the converter circuit board 1.

[0027] The WIA-PA wireless communication module 5 is connected to the wireless transmission antenna 10 via a shielded wire 9. One end of the shielded wire 9 is connected to the WIA-PA wireless communication module 5, and the other end is connected to the wireless transmission antenna 10.

[0028] The wireless transmission antenna 10 is led out to the outside of the converter housing 11 through the shielding wire 9.

[0029] The WIA-PA wireless communication module 5 uses AT commands to upload traffic data, send device parameters, and transmit control commands.

[0030] The WIA-PA wireless communication module 5 is equipped with a metal shielding device 12 to resist electromagnetic interference.

[0031] The WIA-PA wireless communication module supports parameter configuration functions, allowing users to configure PANID, channel, group number, and device type parameters via the configuration tool or electromagnetic flowmeter menu.

[0032] The WIA-PA wireless communication module 2 supports data reporting cycle configuration and can enter a low-power mode through software settings.

[0033] The data transmitted by the WIA-PA wireless communication module 2 includes timestamps, device IDs, and CRC check information to ensure the accuracy of data transmission.

[0034] The WIA-PA wireless communication module 5 is connected to the microcontroller 3.

[0035] The WIA-PA wireless communication module 5 connects the electromagnetic flowmeter data to a two-layer network topology consisting of a gateway and a routing device, enabling wireless communication with the host computer. In the two-layer network topology, the first layer is a mesh structure consisting of a gateway and a routing device, and the second layer is a star structure consisting of a routing device, field devices, and handheld devices.

[0036] The circuit schematic of the WIA-PA wireless communication module is as follows: Figure 3 As shown.

[0037] like Figure 4The process shown implements communication configuration and data interaction: First, configure the necessary parameters of the wireless communication module, such as PANID, channel, group number, and device type, through the wireless module configuration tool or by operating the electromagnetic flowmeter menu via buttons. Once the basic parameters are set, the gateway collects instrument data from the same channel and transmits it to the cloud server via MQTT. Terminal devices can obtain device data by subscribing to the cloud server.

[0038] In this embodiment, the WIA-PA wireless communication module model is ZAWM700-8002; The converter model is MFZ601; The power supply is DC 24V.

Claims

1. A smart electromagnetic flowmeter based on WIA-PA wireless communication, comprising a sensor and a converter, characterized in that: The sensor is connected to the converter. The converter circuit board (1) is provided with a pin socket (2), a microcontroller (3) and a power supply (4). The WIA-PA wireless communication module (5) is connected to the pin socket (2) through multiple pins (6). The pins (6) abut against the converter circuit board (1).

2. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 1, characterized in that: The WIA-PA wireless communication module (5) and the converter are both connected to the power supply (4).

3. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 1, characterized in that: The WIA-PA wireless communication module (5) has screw holes (7) diagonally provided, and the WIA-PA wireless communication module (5) is fixedly connected to the converter circuit board (1) by screws.

4. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 1, characterized in that: The WIA-PA wireless communication module (5) interacts with the converter via the USART serial port (8) set on the converter circuit board (1).

5. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 1, characterized in that: The WIA-PA wireless communication module (5) is connected to the wireless transmission antenna (10) via a shielded wire (9). One end of the shielded wire (9) is connected to the WIA-PA wireless communication module (5), and the other end is connected to the wireless transmission antenna (10).

6. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 5, characterized in that: The wireless transmission antenna (10) is led out to the outside of the converter housing (11) through the shielding wire (9).

7. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 1, characterized in that: The WIA-PA wireless communication module (5) uses AT commands to upload traffic data, send device parameters, and transmit control commands.

8. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 1, characterized in that: The WIA-PA wireless communication module (5) is equipped with a metal shielding device (12).

9. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 1, characterized in that: The WIA-PA wireless communication module (5) is connected to the microcontroller (3).

10. The intelligent electromagnetic flowmeter based on WIA-PA wireless communication according to claim 1, characterized in that: The WIA-PA wireless communication module (5) connects the electromagnetic flowmeter data to a two-layer network topology consisting of a gateway and a routing device, thereby enabling wireless communication with the host computer. In the two-layer network topology, the first layer is a mesh structure consisting of a gateway and a routing device, and the second layer is a star structure consisting of a routing device, field devices, and handheld devices.

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