LNG pipeline pressure gauge based on zigbee network and e-ink

Abstract

The utility model discloses a LNG pipeline pressure gauge based on zigbee network and E ink belongs to wireless communication technical field. The utility model uses the ink screen of low -power consumption as pressure gauge display panel, installs photovoltaic power generation panel under the ink screen, and the electronic ink screen is combined with solar photovoltaic panel, realizes display and power generation synchronization, and enhances display effect, utilizes the characteristic that ink screen display does not consume electricity, and the refresh power consumption is small, uses low -power consumption zigbee wireless connection, cancels the wired connection of pressure gauge, can be widely applied in LNG pipeline pressure monitoring equipment, and wireless connection pressure gauge and control room reduce installation wiring cost, and increase pressure gauge connection's zero activity.

Description

Technical Field

[0001] This utility model belongs to the field of wireless communication technology, specifically relating to an LNG pipeline pressure gauge based on Zigbee network and E-ink. Background Technology

[0002] Wired pressure gauges are the most commonly used data acquisition devices for LNG pipelines. These gauges are connected to the control room via cables, which simultaneously supply power and transmit information. This invention primarily aims to optimize and improve current pressure gauges.

[0003] Traditional pressure gauges require pre-installed cables. Once the cable location is confirmed, the pressure gauge installation location is also determined, making later modifications and maintenance difficult.

[0004] Traditional pressure gauges typically use black-and-white or color LCD screens or digital tubes as display screens. During user operation, the screen backlight is turned on for easy viewing. The backlight also needs to be maintained when the user is not operating the gauge. However, maintaining the control display still requires a continuous power supply to the pressure gauge, which is why the pressure gauge must be connected to a power cable.

[0005] The current installation of pressure gauges via cables also places higher demands on the installation process. The cables embedded in the pressure gauges carry low-voltage electricity and need to be separated from other high-voltage cables to prevent electromagnetic interference. At the same time, high-voltage prohibition signs need to be marked on the pressure gauge terminals to prevent wiring personnel from accidentally connecting high-voltage electricity to the low-voltage system. Even so, it is still impossible to completely confirm that the wiring is completely accurate. Utility Model Content

[0006] In view of the above-mentioned technical problems in the prior art, this utility model proposes an LNG pipeline pressure gauge based on Zigbee network and E-ink. The design is reasonable, overcomes the shortcomings of the prior art, and has good effect.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An LNG pipeline pressure gauge based on Zigbee network and E-ink includes an electronic ink screen (1), a photovoltaic power generation panel (2), an upper cover (3), a main control board (4), and a lower cover (5); wherein, the electronic ink screen (1) covers the surface of the photovoltaic power generation panel (2); the main control board (4) is fixed inside the lower cover (5) and is connected to the electronic ink screen (1) through a line; the main control board (4) integrates a microcontroller, a wireless communication module, and an energy storage device; the microcontroller and the wireless communication module are connected through a line; the photovoltaic power generation panel (2) is connected to the energy storage device through a wire; the wireless communication module is embedded in the main control board (4) and is wirelessly connected to the main control room; the energy storage device is set on the main control board (4) and is used to store the electrical energy generated by the photovoltaic power generation panel (2); the upper cover (3) covers the upper part of the electronic ink screen (1) and is fastened to the lower cover (5) through a sealing structure to form a waterproof and dustproof closed space.

[0009] Preferably, the e-ink screen (1) and the photovoltaic power generation panel (2) are bonded together by a transparent adhesive layer. The e-ink screen only consumes power when refreshing the displayed content and does not consume power in the static display state, so as to reduce the overall power consumption.

[0010] Preferably, the microcontroller sends the real-time pressure values ​​to the main control room via a wireless communication module.

[0011] Preferably, an annular sealing ring is provided between the upper cover (3) and the lower cover (5). The upper cover (3) is made of light-transmitting material, and the lower cover (5) is a metal shell with a flange or threaded interface at the bottom.

[0012] Preferably, the energy storage device is a capacitor or a rechargeable battery, which is soldered to the power input terminal of the main control board (4) and connected to the photovoltaic power generation panel (2) through wires.

[0013] Preferably, the antenna of the wireless communication module extends to the outside of the lower cover (5), which can avoid the metal casing from shielding the wireless signal.

[0014] The beneficial technical effects of this utility model are as follows:

[0015] This invention uses a low-power e-ink screen as the pressure gauge display panel, with a photovoltaic power generation panel installed below the screen. The combination of the e-ink screen and the solar photovoltaic panel enables simultaneous display and power generation, enhancing the display effect. Utilizing the power-free display and low refresh power consumption of the e-ink screen, a low-power Zigbee wireless connection is used, eliminating the need for a wired connection to the pressure gauge. It can be widely applied in LNG pipeline pressure monitoring equipment. The wireless connection between the pressure gauge and the control room reduces installation and wiring costs and increases the zero-activity of the pressure gauge connection. Attached Figure Description

[0016] Figure 1A schematic diagram of the connection scheme between the main control unit and the LNG pressure gauge;

[0017] Figure 2 This is a schematic diagram of the pressure gauge of this utility model;

[0018] Among them, 1-E-ink display; 2-Photovoltaic power generation panel; 3-Top cover; 4-Main control board; 5-Bottom cover. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 This is a schematic diagram of the connection scheme between the main controller and the LNG pressure gauge.

[0021] The MCU in the main control room has multiple communication interfaces for communication with the outside world. The improvement in this invention is the communication between communication port 1 and the LNG pressure gauge. Traditionally, the main control unit and the LNG pressure gauge are connected by cables, which need to be laid in advance and whose position can hardly be changed after laying. This invention uses a low-power wireless signal conversion module to convert the data information of communication port 1 into wireless data before connecting it to the LNG pressure gauge.

[0022] Figure 2 This describes the core part of this utility model. The wireless photovoltaic-powered LNG pressure gauge with an e-ink display consists of two main parts: an e-ink display 1 on top and a photovoltaic power generation panel 2 on the bottom. Because the e-ink display 1 is translucent, external light can enter the photovoltaic power generation panel 2 behind it. The photovoltaic power generation panel 2 generates electricity, which is fed into the capacitors of the main control board 4, thus powering the entire system. Due to the display characteristics of the e-ink display 1, power supply and control are only required when the displayed content is refreshed. After control is completed and power is cut off, the e-ink continues to retain the displayed content. Therefore, the entire circuit only receives power when the data changes. During the data stabilization period, the entire circuit enters a low-power sleep mode, and the display part, which consumes the most power, no longer consumes energy. At this time, the photovoltaic power generation panel 2 continuously charges the energy storage capacitor, ensuring the pressure gauge can operate for a long time. The specific structure is as follows:

[0023] An LNG pipeline pressure gauge based on Zigbee network and E-ink includes an electronic ink screen 1, a photovoltaic power generation panel 2, an upper cover 3, a main control board 4, and a lower cover 5. The electronic ink screen 1 covers the surface of the photovoltaic power generation panel 2. The main control board 4 is fixed inside the lower cover 5 and connected to the electronic ink screen 1 via wiring. The main control board 4 integrates a microcontroller, a wireless communication module, and an energy storage device. The microcontroller and the wireless communication module are connected via wiring. The photovoltaic power generation panel 2 is connected to the energy storage device via wires. The wireless communication module is embedded in the main control board 4 and wirelessly connected to a main control room. The energy storage device is located on the main control board 4 and stores the electrical energy generated by the photovoltaic power generation panel 2. The upper cover 3 covers the upper part of the electronic ink screen 1 and is sealed to the lower cover 5 to form a waterproof and dustproof enclosed space. The bottom of the lower cover 5 has an installation interface for fixing the pressure gauge to the LNG pipeline.

[0024] The e-ink screen 1 and the photovoltaic power generation panel 2 are bonded together with a transparent adhesive layer. The e-ink screen only consumes power when refreshing the displayed content and does not consume power in static display mode, thus reducing overall power consumption. The microcontroller sends the real-time pressure values ​​to the main control room via a wireless communication module. An annular sealing ring is provided between the upper cover 3 and the lower cover 5. The upper cover 3 is made of a light-transmitting material, while the lower cover 5 is a metal shell with a flange or threaded interface at the bottom. The energy storage device is a capacitor or a rechargeable battery, soldered to the power input terminal of the main control board 4 and connected to the photovoltaic power generation panel 2 via wires. The antenna of the wireless communication module extends to the outside of the lower cover 5 to avoid the metal shell shielding the wireless signal.

[0025] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. An LNG pipeline pressure gauge based on Zigbee network and E-ink, characterized in that: The device includes an e-ink screen (1), a photovoltaic power generation panel (2), an upper cover (3), a main control board (4), and a lower cover (5). The e-ink screen (1) covers the surface of the photovoltaic power generation panel (2). The main control board (4) is fixed inside the lower cover (5) and connected to the e-ink screen (1) via a circuit. The main control board (4) integrates a microcontroller, a wireless communication module, and an energy storage device. The microcontroller and the wireless communication module are connected via a circuit. The photovoltaic power generation panel (2) is connected to the energy storage device via a wire. The wireless communication module is embedded in the main control board (4) and is wirelessly connected to the main control room. The energy storage device is set on the main control board (4) and is used to store the electrical energy generated by the photovoltaic power generation panel (2). The upper cover (3) covers the top of the e-ink screen (1) and is fastened to the lower cover (5) through a sealing structure to form a waterproof and dustproof enclosed space.

2. The LNG pipeline pressure gauge based on Zigbee network and E-ink according to claim 1, characterized in that: The electronic ink screen (1) and the photovoltaic power generation panel (2) are bonded together by a transparent adhesive layer.

3. The LNG pipeline pressure gauge based on Zigbee network and E-ink according to claim 1, characterized in that: The microcontroller sends the real-time pressure readings to the main control room via a wireless communication module.

4. The LNG pipeline pressure gauge based on Zigbee network and E-ink according to claim 1, characterized in that: An annular sealing ring is provided between the upper cover (3) and the lower cover (5). The upper cover (3) is made of light-transmitting material, and the lower cover (5) is a metal shell with a flange or threaded interface at the bottom.

5. The LNG pipeline pressure gauge based on Zigbee network and E-ink according to claim 1, characterized in that: The energy storage device is a capacitor or a rechargeable battery, which is soldered to the power input terminal of the main control board (4) and connected to the photovoltaic power generation panel (2) through wires.

6. The LNG pipeline pressure gauge based on Zigbee network and E-ink according to claim 1, characterized in that: The antenna of the wireless communication module extends to the outside of the lower cover (5), which can avoid the shielding of wireless signals by the metal casing.

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