An explosion-proof meter reading terminal collection system applied to a chemical industry scene

Abstract

The utility model relates to a kind of explosion-proof meter reading terminal acquisition systems applied to chemical scene.The system includes control subsystem, communication subsystem, acquisition subsystem, power supply subsystem and switch.The control subsystem includes main control MCU chip, and electrical connection is arranged between the control subsystem and other subsystems;The switch uses the magnetic attraction switch consisting of Reed and magnet.Compared with prior art, the utility model has the advantages of remote control equipment's on-off state, long battery life, low maintenance cost and the like.

Description

Technical Field

[0001] This utility model relates to a meter reading system, and more particularly to an explosion-proof meter reading terminal data acquisition system applied in chemical industry settings. Background Technology

[0002] With the continuous development of science and technology, many meters have adopted intelligent technology, and data can be automatically uploaded to platforms for processing and statistics. However, due to data confidentiality and cost considerations, many chemical companies still use non-intelligent meters, requiring manual data collection and processing. In view of this situation, meter reading terminal data acquisition systems have emerged.

[0003] Existing meter reading terminals are typically battery-powered, but batteries have short lifespans, requiring frequent replacements and increasing maintenance costs and workload. Furthermore, existing terminals cannot remotely control the device's on / off status, leading to wasted power. The reliability, data transmission efficiency, and stability of existing meter reading terminals also need further improvement. Additionally, the security of data acquisition systems in chemical environments requires enhancement.

[0004] For example, CN205983803U discloses an intelligent meter reading system, including a meter reading terminal, the Internet, and a meter reading system server. The meter reading terminal includes a casing and a base plate, MCU, camera, supplementary light, timer, memory, wireless communication module, and battery disposed within the casing. Although this patent enables remote data acquisition from water and gas meters, saving a significant amount of manpower and resources, it cannot remotely control the on / off status of the equipment, resulting in wasted electricity and issues such as short battery life and high maintenance costs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an explosion-proof meter reading terminal data acquisition system applicable to chemical industry scenarios.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An explosion-proof meter reading terminal data acquisition system for chemical industry applications, comprising a control subsystem, a communication subsystem, a data acquisition subsystem, a power supply system, and a switch;

[0008] The control subsystem includes a main control MCU chip, and the control subsystem is electrically connected to other subsystems.

[0009] The electronic power supply system includes battery-powered circuits and photovoltaic-powered circuits;

[0010] The switch is a magnetic switch, which includes a reed switch and a magnet; the reed switch is located at the corresponding switch on the outer shell of the explosion-proof meter reading terminal acquisition system.

[0011] Preferably, in the control subsystem, the MCU chip is an ESP32-S3.

[0012] Preferably, the communication subsystem includes a communication chip and an antenna, wherein the communication chip is an Air780E; the antenna includes a 4G antenna, a Bluetooth antenna, and a Wi-Fi antenna.

[0013] Preferably, the acquisition subsystem includes a camera; the acquisition subsystem also includes a photosensor and a supplementary light.

[0014] More preferably, the acquisition subsystem is encased in an explosion-proof shell.

[0015] More preferably, the camera uses a 30W pixel CMOS sensor with a maximum resolution of 1280×720; the fill light uses 4 high-brightness LED beads with a wavelength of 6500K.

[0016] Preferably, the electronic power supply system includes a battery-powered circuit and a photovoltaic-powered circuit.

[0017] More preferably, the battery power supply circuit includes a lithium battery protection circuit; the photovoltaic power supply circuit includes a monocrystalline silicon module and an MPPT chip, and the photovoltaic power supply circuit is also provided with an anti-reverse current diode.

[0018] Preferably, the communication submodule is connected to a remote platform.

[0019] More preferably, a configuration module is provided on the remote platform, which is used to configure the acquisition cycle and remote control switch of the acquisition subsystem.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This utility model incorporates a magnetic switch to avoid power waste. The magnetic switch uses a reed switch design, with the control subsystem controlling the magnet's attraction. When the reed switch senses the magnet, the reed inside closes, the circuit is completed, and the data acquisition subsystem is powered on to begin recording. By incorporating the magnetic switch, sufficient power is ensured before formal installation, preventing excessive power consumption and facilitating the device's power-on and power-off. Furthermore, remote power-on is enabled, allowing for safe and convenient remote meter reading control.

[0022] 2. The power supply system of the explosion-proof meter reading terminal in this utility model includes a photovoltaic power supply circuit and a battery power supply circuit. By adopting two power supply methods, namely battery power supply and photovoltaic power supply, and giving priority to using the photovoltaic power supply circuit to power the acquisition subsystem, the battery power supply circuit is in standby mode. It can adapt to high-frequency data acquisition work, reduce the number of battery replacements, increase the service life of the equipment, and extend the battery life.

[0023] 3. The communication chip in this invention is the Air780E; the antennas include a 4G antenna, a Bluetooth antenna, and a Wi-Fi antenna, enabling remote data transmission via wireless communication. The combination of multiple antennas allows the system to flexibly adapt to communication needs in different scenarios: the 4G antenna ensures stable data backhaul under wide-area coverage, the Bluetooth antenna supports near-field configuration and debugging of devices, and the Wi-Fi antenna enables high-speed data interaction within a local area network. This design can be used with cloud software platforms and mobile applications, enabling real-time monitoring of device status, remote parameter configuration, and fault early warning through multi-terminal collaboration, significantly improving the flexibility of system deployment and the convenience of subsequent maintenance.

[0024] 4. The data acquisition subsystem of this utility model is encased in an explosion-proof shell, which improves the safety of the system. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the system framework of the explosion-proof meter reading terminal data acquisition system applied in a chemical industry setting according to this utility model;

[0026] Figure 2 This is a schematic diagram illustrating the working steps of the explosion-proof meter reading terminal data acquisition system applied in a chemical industry setting, as shown in the embodiment. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] In this embodiment, an explosion-proof meter reading terminal data acquisition system for chemical industry scenarios is used. The system is as follows: Figure 1 As shown, it includes a control subsystem, a communication subsystem, a data acquisition subsystem, a power supply system, and switches;

[0030] The control subsystem includes a main control MCU chip, and the control module is electrically connected to other modules; the power supply system includes a photovoltaic power supply circuit and a battery power supply circuit; the photovoltaic power supply circuit includes a monocrystalline silicon module and an MPPT chip, and also includes an anti-reverse current diode; the battery power supply circuit includes a lithium battery protection circuit; the switch is a magnetic switch.

[0031] In the control subsystem, the MCU chip used is ESP32-S3. The data acquisition subsystem includes a camera for acquiring meter data; it also includes a photosensor and a supplementary light to detect ambient light intensity and activate the supplementary light when the ambient light intensity is below a preset value; the acquisition subsystem is encased in an explosion-proof housing. The camera uses a 30W pixel CMOS sensor with a maximum resolution of 1280×720; the supplementary light uses four high-brightness LED beads with a wavelength of 6500K.

[0032] The communication module includes a communication chip and antennas. The communication chip is an Air780E; the antennas include a 4G antenna, a Bluetooth antenna, and a Wi-Fi antenna. The main control MCU chip is an ESP32-S3 module, which integrates Bluetooth and Wi-Fi chips. The communication module uses the Air780E module to achieve wireless communication.

[0033] The power supply circuit is designed with two power supply methods: battery power and photovoltaic power. Battery power uses a rechargeable lithium battery with a capacity of 3000mAh. Photovoltaic power uses a monocrystalline silicon solar panel with dimensions of 100mm × 150mm and a maximum output power of 5W.

[0034] It also features a photosensor to detect ambient light intensity, automatically activating the fill light when the light is dim. The camera is a 1-megapixel CMOS sensor with a maximum resolution of 1280×720, supporting 30 frames per second video recording. The fill light uses four high-brightness LED beads with a wavelength of 6500K, improving system stability.

[0035] The system also features a magnetic switch implemented using a reed switch. Markings on the device casing indicate the magnet's attachment point; when the magnet is attached to this position, the internal reed switch closes, opening the circuit and powering on the control system. This design ensures the device has sufficient power before installation.

[0036] The SIM card slot is for inserting a SIM card and supports 4G network communication. The antenna section includes one 4G antenna, one Bluetooth antenna, and one Wi-Fi antenna.

[0037] This system can be used with a software platform and a mobile application. Through the software platform or mobile application, device parameters such as camera resolution and shooting frequency can be remotely configured, and device status information such as battery level and network status can be viewed. Furthermore, the system can also be mounted on a robot and used in conjunction with an inspection robot as a data acquisition sensor to enable the robot to perform meter readings.

[0038] In this embodiment, the specific parameters of the explosion-proof meter reading terminal data acquisition system are as follows:

[0039] The main control MCU chip uses an ESP32-S3 with a main frequency of 240MHz, 512KB RAM, and 4MB Flash; the communication module uses an Air780E, operating in the B1 / B3 / B5 / B8 frequency band, with a maximum transmit power of 23dB; the Bluetooth chip is built into the ESP32-S3, supporting BLE 5.0; the Wi-Fi chip is built into the ESP32-S3, supporting 802.11b / g / n, with a maximum transmission rate of 150Mbps; the power supply circuit includes a battery and a photovoltaic panel, wherein the battery is a rechargeable lithium battery with a capacity of 3000mAh and an output voltage of 3.7V; the photovoltaic panel is made of monocrystalline silicon, measuring 100mm × 150mm, with a maximum output power of 5W; in the acquisition subsystem... It includes a photosensor, a camera, and a fill light; the photosensor is a digital photosensor with a detection range of 5–65000 Lux; the camera uses a 1 / 4-inch CMOS sensor with a maximum resolution of 1280×720 and supports 30fps video; the fill light uses four high-brightness LED beads with a wavelength of 6500K and a brightness of 800 lumens; the magnetic switch uses a reed switch with a magnetic attraction force of 3N; the SIM card slot supports NanoSIM cards and 4G networks; the antennas include a 4G antenna, a Bluetooth antenna, and a Wi-Fi antenna; the 4G antenna is 2.4GHz with a gain of 3dBi; the Bluetooth antenna is 2.4GHz with a gain of 2dBi; and the Wi-Fi antenna is 2.4GHz with a gain of 3dBi.

[0040] The system employs both photovoltaic and battery power, adapting to high-frequency data acquisition, reducing battery replacement frequency, increasing equipment usage time, and extending battery life. It features a magnetic switch to prevent power waste, enables remote data transmission via wireless communication, and can be used with software platforms and mobile applications to enhance flexibility and maintainability. It can also be integrated with robots to achieve robot inspection and meter identification functions.

[0041] In this embodiment, the system performs meter reading terminal data acquisition, and the data acquisition method and steps are as follows: Figure 2 As shown, the process includes: installing the acquisition system in front of the meter under test, remotely powering on the acquisition subsystem using a magnetic switch, supplying power to the acquisition subsystem using an electronic system, periodically acquiring meter data using the acquisition subsystem, uploading the meter data to the control subsystem, processing the meter data using the control subsystem, and transmitting the processed data to a remote platform via a communication subsystem, where the meter's data status can be viewed, and triggering an alarm when the data status is abnormal.

[0042] The system includes a main control MCU, an ESP32-S3 module, and built-in Bluetooth and Wi-Fi modules; a magnetic switch for controlling the power-on and power-off status of the hardware, ensuring sufficient power before installation to prevent excessive power consumption, and the magnetic switch facilitates powering on the device before installation without disassembling it; a power supply circuit, mainly including battery power and photovoltaic power; a camera for capturing the meter's status and uploading the photos to the platform for processing; a supplementary light to assist the camera in low-light conditions, ensuring clear photos; a SIM card to support the communication module's operation; antennas including a Wi-Fi antenna, a Bluetooth antenna, and a 4G module communication antenna; and an Air780E communication module for wireless communication. The Bluetooth and Wi-Fi chips are integrated into the ESP32-S3 module.

[0043] The hardware device can be used with either a mobile app or a software platform. Users can remotely view the device's status information, data processing status, alarm information, etc., on the software platform or mobile app. They can also remotely configure the device's photo-taking frequency and other related device configuration information. In addition, the hardware itself can also be used as a data acquisition sensor, mounted on the robot body, for functions such as inspection operations and meter recognition.

[0044] After power-on, the main control MCU first initializes each hardware module, including the Air780E communication module, camera, and fill light. After initialization, the MCU determines whether to turn on the fill light based on the ambient light intensity detected by the photosensor.

[0045] The MCU configures the Air780E communication module via the SPI interface, setting parameters such as operating frequency band and transmit power. After configuration, the Air780E module connects to the 4G network and establishes a connection with the cloud software platform via the MQTT protocol.

[0046] In normal operating mode, the MCU controls the camera to capture meter images at preset time intervals. After compression, the images are uploaded to the cloud software platform via a 4G network by the Air780E module. The cloud software platform analyzes and identifies the uploaded images, obtains the meter readings, and stores the results.

[0047] When the MCU detects that the battery is low, it will upload the alarm information to the cloud software platform through the Air780E module, prompting maintenance personnel to replace the battery.

[0048] The system also supports configuring device parameters and viewing device status via a mobile application. The mobile application connects to the system's Bluetooth chip via Bluetooth, allowing users to view information such as device battery level and network status, as well as configure parameters such as camera resolution and shooting frequency.

[0049] When on-site maintenance of the system is required, the magnet can be attached to the marked position on the casing, and the system can be powered on via the magnetic switch, allowing operation without disassembling the casing.

[0050] In this embodiment, the data acquisition device is used in conjunction with a software platform and a mobile app. The platform uses the MQTT protocol, and the mobile app connects via Bluetooth. The platform and app can be configured to set the photo upload frequency and display battery information. The camera resolution can be configured up to 300,000 pixels, and LED fill light can be enabled or disabled. Not only can the device's parameters be remotely configured, but its status and data acquisition information can also be viewed. Meter data status can be viewed remotely on the platform. Only when the device data is abnormal should inspection personnel be dispatched to the site for inspection and handling, eliminating the need for repetitive manual meter reading. The device's status information can also be observed on the platform without on-site inspection. If the device malfunctions or has low battery requiring battery replacement, the status information can be viewed on the platform, reducing the number of times inspection personnel need to visit the site. The device is also mounted on the robot body as a data acquisition sensor, uploading the collected meter data to the robot inspection management platform. Combined with AI intelligent recognition algorithms, the collected meter data is processed, and data anomalies can trigger alarms.

[0051] This system utilizes both photovoltaic and battery power, significantly extending battery life and reducing the frequency of battery replacements. The magnetic switch design prevents power waste before installation. Remote data transmission is achieved via a wireless communication module, eliminating the need for wiring. It can be integrated with software platforms and mobile applications, enhancing system flexibility and maintainability. Furthermore, the system can be mounted on a robot to enable robotic inspection and meter reading functions.

[0052] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. An explosion-proof meter reading terminal data acquisition system for chemical industry applications, characterized in that, The system includes a control subsystem, a communication subsystem, a data acquisition subsystem, a power supply system, and switches; The control subsystem includes a main control MCU chip, and the control subsystem is electrically connected to other subsystems. The power supply system includes a battery-powered circuit and a photovoltaic-powered circuit; The switch is a magnetic switch, which includes a reed switch and a magnet; the reed switch is located at the switch corresponding to the outer casing of the explosion-proof meter reading terminal acquisition system.

2. The explosion-proof meter reading terminal data acquisition system for chemical industry scenarios according to claim 1, characterized in that, In the aforementioned control subsystem, the MCU chip is an ESP32-S3.

3. The explosion-proof meter reading terminal data acquisition system for chemical industry scenarios according to claim 1, characterized in that, The communication subsystem includes a communication chip and an antenna. The communication chip is an Air780E, and the antenna includes a 4G antenna, a Bluetooth antenna, and a Wi-Fi antenna.

4. The explosion-proof meter reading terminal data acquisition system for chemical industry scenarios according to claim 1, characterized in that, The acquisition subsystem includes a camera; the acquisition subsystem also includes a photosensor and a supplementary light.

5. The explosion-proof meter reading terminal data acquisition system for chemical industry scenarios according to claim 4, characterized in that, The acquisition subsystem is encased in an explosion-proof shell.

6. The explosion-proof meter reading terminal data acquisition system for chemical industry applications according to claim 4, characterized in that, The camera uses a 30W pixel CMOS sensor with a maximum resolution of 1280×720; the fill light uses 4 high-brightness LED beads with a wavelength of 6500K.

7. The explosion-proof meter reading terminal data acquisition system for chemical industry scenarios according to claim 1, characterized in that, The battery power supply circuit includes a lithium battery protection circuit; the photovoltaic power supply circuit includes a monocrystalline silicon module and an MPPT chip, and the photovoltaic power supply circuit is also equipped with an anti-reverse current diode.

8. The explosion-proof meter reading terminal data acquisition system for chemical industry scenarios according to claim 1, characterized in that, The communication subsystem is connected to a remote platform.

9. The explosion-proof meter reading terminal data acquisition system for chemical industry applications according to claim 8, characterized in that, The remote platform is equipped with a configuration module, which is used to configure the acquisition cycle and remote control switch of the acquisition subsystem.

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