Cathode protection potential acquisition wireless transmission device and method based on solar power supply
The cathode protection potential acquisition wireless transmission device powered by solar energy solves the problems of insufficient device endurance and incomplete data acquisition, realizes long-term uninterrupted monitoring and low power consumption design, and meets the potential status response requirements in complex environments.
Patent Information
- Application Number
- CN202511561606.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-02-13
AI Technical Summary
Existing cathodic protection potential acquisition devices have insufficient battery life, incomplete data acquisition, and cannot achieve 24-hour uninterrupted monitoring. Furthermore, they lack low-power design and are unable to reflect the true potential state under complex interference.
A cathode protection potential acquisition and wireless transmission device powered by solar energy includes a solar power generation and storage module, a data acquisition module, and a data display module. It transmits data remotely via GPRS and works in conjunction with a central processing unit and an intelligent switch control module to achieve uninterrupted data acquisition and low power consumption.
It enables long-term continuous power supply to the equipment, supports 24-hour uninterrupted acquisition of various potential parameters, reduces maintenance costs, accurately captures potential fluctuations, and reflects the true potential state under complex interference.
Smart Images
Figure CN121519063A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cathodic protection technology, and in particular to a wireless transmission device and method for acquiring cathodic protection potential based on solar power. Background Technology
[0002] In the field of cathodic protection technology, real-time and accurate monitoring of the potential state of the protected object (such as pipelines) is crucial to ensuring its safe operation. With the development of remote monitoring technology, the endurance of the potential acquisition device and the continuity and accuracy of data acquisition have become core factors affecting the monitoring effect.
[0003] A cathodic protection potential acquisition device is used to monitor the potential changes of the protected object in a cathodic protection system. It can collect key parameters such as energized potential, de-energized potential, natural potential, and AC interference voltage, providing data support for evaluating the protection effect.
[0004] Existing intelligent potential acquisition devices mostly use disposable lithium batteries for power, monitor cathodic protection potential through conventional data acquisition modules, and upload data to the terminal system using specific transmission methods. However, research has revealed significant technical problems with existing technologies. First, the power supply to the acquisition devices is limited. The disposable lithium batteries used in current technologies have limited energy, resulting in insufficient battery life and failing to meet the needs of long-term, continuous monitoring. Furthermore, these devices are often installed in the field, making battery replacement difficult and maintenance costs high. Second, existing acquisition devices do not collect comprehensive data. Due to power supply limitations, they cannot achieve 24-hour uninterrupted acquisition and cannot fully capture potential fluctuations caused by diurnal variations, seasonal changes, and environmental changes. Especially under interference conditions, the acquisition accuracy of key parameters such as power-off potential and intermittent potential is insufficient. Finally, existing acquisition devices lack optimized design for low-power operation, resulting in high standby power consumption and further shortening battery life. Simultaneously, their continuous acquisition capability for special parameters such as AC interference voltage is weak, making it difficult to reflect the true potential state under complex interference conditions. Summary of the Invention
[0005] To address the shortcomings of existing technologies, this invention provides a device and method for wirelessly transmitting cathodic protection potential data based on solar power. This invention does not use conventional batteries for power supply, but uses a novel energy-saving photovoltaic power generation battery to monitor cathodic protection data online and transmit the data remotely wirelessly.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a wireless transmission device for acquiring cathode protection potential based on solar power, comprising: Solar power generation and energy storage module, cathodic protection data acquisition module, data transmission module, and data display module; The solar power generation and energy storage module includes a solar power panel, a voltage conversion and stabilization unit, and an energy storage unit connected in sequence; the cathodic protection data acquisition module includes an acquisition unit and a conversion unit, and an intelligent switch is set between the acquisition unit and the conversion unit to control the signal on / off; the cathodic protection data acquisition module is used to acquire potential information and convert analog signals into digital signals, and the data transmission module is used to identify digital signals and send them to the data display module.
[0007] As a further technical solution, a central processing unit is also included; the central processing unit is electrically connected to the solar power generation and storage module, the cathodic protection data acquisition module, the data transmission module, and the data display module, and is used to control the coordinated operation between the modules; the central processing unit is also electrically connected to the smart switch, and the central processing unit controls the on / off state of the smart switch.
[0008] As a further technical solution, the solar power panel is used to convert solar energy into electrical energy, and its output terminal is connected to the input terminal of the voltage conversion and regulation unit. The voltage conversion and regulation unit includes a DC-DC voltage regulation circuit, and the output terminal of the voltage conversion and regulation unit is connected to the energy storage unit, which is a battery pack.
[0009] As a further technical solution, the acquisition unit is a simulation test piece, a polarization probe, a special test piece for saturated copper sulfate electrode and a reference electrode, and the conversion unit is a high-speed AD chip equipped with a high-speed AD conversion circuit, and the high-speed AD conversion circuit is designed with an isolation module.
[0010] As a further technical solution, the data transmission module includes a GPRS conversion module, which identifies digital signals, converts the digital signals into GPRS data, and then sends them to the data display module.
[0011] As a further technical solution, the data display module receives and identifies GPRS data, and the data display module includes a server and a client, adopting a B / S architecture mode for data display.
[0012] As a further technical solution, the potential information collected by the cathodic protection data acquisition module includes energized potential, de-energized potential, intermittent potential, natural potential, and AC interference voltage.
[0013] In a second aspect, the present invention provides a method for wireless transmission of cathode protection potential based on solar power, comprising, based on the device for wireless transmission of cathode protection potential based on solar power as described in any one of the first aspects, a method for wireless transmission of cathode protection potential based on solar power, including: The solar power generation and energy storage module converts solar energy into electrical energy through solar panels. After passing through a voltage conversion and stabilization unit, part of the electrical energy is stored in the energy storage unit, and the other part powers the device. The cathodic protection data acquisition module collects real-time potential information, including on-state potential, off-state potential, intermittent potential, natural potential, and AC interference voltage. It converts the collected potential information into digital signals. The central processing unit controls the data transmission module to identify the digital signals and sends them to the data display module for display via GPRS communication.
[0014] As a further technical solution, a polarized test piece is used to collect the power-off potential, and the polarized test piece is connected to the cathodic protection data acquisition module.
[0015] As a further technical solution, the power outage potentials collected at multiple time points are processed, including removing the maximum and minimum values and then taking the average value.
[0016] One or more technical solutions of the present invention have the following beneficial effects: 1. This invention uses solar panels in conjunction with an energy storage unit (battery pack) for power supply, and a voltage conversion and regulation unit to stabilize the output voltage, replacing disposable lithium batteries. This design avoids the energy limitations of lithium batteries, enabling long-term continuous power supply to the equipment without frequent battery replacements. It is particularly suitable for field installation scenarios, significantly reducing maintenance costs and ensuring uninterrupted 24 / 7 operation of the equipment.
[0017] 2. This invention enables 24-hour uninterrupted acquisition of on-state potential, covering fluctuations caused by day / night cycles, seasons, and environmental changes, with an acquisition range of ±10V. Data is uploaded via GPRS to generate curves, meeting comprehensive analysis needs. For off-state potential, this invention uses a dedicated simulation test piece and polarization probe, acquiring multiple samples within 0.04s-0.05s and averaging them to accurately capture the true value under interference conditions. It supports continuous acquisition of intermittent potential (adjustable on / off time), with an acquisition frequency of up to 500 times / s, accurately displaying the protection potential curve and depolarization potential, reflecting the corresponding relationship of potential fluctuations under interference; simultaneously, it achieves uninterrupted acquisition of natural potential and AC interference voltage (maximum 500 times / s), covering various key parameters. Attached Figure Description
[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.
[0019] Figure 1 This is a structural framework diagram of the wireless transmission device for acquiring cathodic protection potential in this invention; Figure 2 This is a schematic diagram of the structure of the solar power generation and energy storage module in this invention. Detailed Implementation
[0020] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0021] Example 1 This embodiment provides a wireless transmission device for acquiring cathode protection potential based on solar power, such as... Figure 1 The structural framework diagram shows that it includes: a solar power generation and energy storage module for providing continuous power to the device, a cathodic protection data acquisition module, a data transmission module, a data display module, and a central processing unit. Compared with traditional remote monitoring equipment, it has uninterrupted power supply and can continuously collect data without power, completing functions that ordinary data acquisition instruments cannot perform due to power limitations.
[0022] In this embodiment, as Figure 2 The structural diagram of the solar power generation and energy storage module is shown. The solar power generation and energy storage module includes a solar power panel, a voltage conversion and regulation unit, and an energy storage unit connected in sequence. Specifically, the solar power panel is used to convert solar energy into electrical energy. It adopts a 360mm*360mm solar panel with a power of 20W and an output voltage of 18V. Its output terminal is connected to the input terminal of the voltage conversion and regulation unit.
[0023] Since the device in this embodiment is powered by 12V, an 18V to 12V voltage conversion and regulation unit is designed, including a DC-DC voltage regulator circuit, which can stably output 12V voltage. The output terminal of the voltage conversion and regulation unit is connected to an energy storage unit, which is a 12V 8000mAh battery pack. The battery pack receives energy generated by solar energy and powers the device. This embodiment uses a designed solar power generation and storage module to replace the original disposable lithium battery for power supply, avoiding the energy limitation of disposable lithium batteries and making the battery life of the solar-powered cathode protection potential acquisition wireless transmission device longer.
[0024] In this embodiment, the cathodic protection data acquisition module includes an acquisition unit and a conversion unit, used to acquire potential information and convert analog signals into digital signals. The acquisition unit includes a polarized test piece, a natural test piece, pipe connection lines, and a long-life copper sulfate reference electrode. The conversion unit uses a high-speed AD7124_4 chip and incorporates a high-speed AD conversion circuit. The high-speed AD conversion circuit also includes an isolation module to isolate the AD chip from external high-voltage interference circuits. After being acquired by the acquisition unit, the data is transmitted to the conversion unit for digital-to-analog conversion.
[0025] In this embodiment, the potential information collected by the cathodic protection data acquisition module includes the on-state potential, off-state potential, intermittent potential, natural potential, and AC interference voltage.
[0026] When the cathodic protection data acquisition module continuously monitors the energized potential, it can fully collect the fluctuations of the energized potential, covering the diurnal variation cycle (24h), fluctuations caused by seasonal changes, environmental changes, and other factors. The potential acquisition range is ±10V, and the data can be uploaded to the data display module via GPRS to generate curves for data analysis.
[0027] When continuously and accurately acquiring and monitoring the power failure potential, the power failure potential of the protected body can be continuously acquired. The power failure potential is acquired through a polarized test piece, which is connected to the cathodic protection data acquisition module. The central processing unit controls the power failure potential reading time to 0.04s-0.05s. Specifically, data is acquired at 40ms, 42ms, 44ms, 46ms, 48ms, and 50ms. The maximum and minimum values are removed, and the average value is taken to accurately acquire the pipeline power failure potential under interference conditions.
[0028] When continuously acquiring intermittent potentials, it features continuous and rapid on / off switching (12s on, 3s off or 18s on, 3s off; the on / off time can be controlled and adjusted). It continuously acquires pipeline intermittent potentials, remotely controls on / off switching, and has an acquisition frequency of 500 times / s. It can display the protection potential curve generated by the data display module, accurately display the depolarization potential, and accurately capture the corresponding de-energization potential value under the fluctuating pipeline energization potential under interference. It can accurately and effectively reflect the true state of cathodic protection potential interference under various interferences.
[0029] When continuously acquiring the natural potential, the system has the function of continuously acquiring the natural potential of cathodic protection. The system is equipped with a special test piece and a reference electrode to continuously test the potential fluctuation of the natural potential under various disturbances.
[0030] When continuously acquiring AC interference voltage, it has the function of acquiring AC interference voltage and can perform uninterrupted acquisition. The specific acquisition method is to use a saturated copper sulfate electrode to monitor the AC voltage between the electrode and the pipeline, and the monitoring frequency is designed to be a maximum of 500 times / s.
[0031] To ensure the device enters sleep mode without commands, the design incorporates low-power processing. In existing technologies, high standby power consumption is primarily due to low power conversion efficiency in the power supply design circuit during standby, and the MCU's control modules failing to transition to standby mode. In this embodiment, the central processing unit uses the STM32 series microcontroller, currently the lowest power consumption microcontroller in the technology. This series of microcontrollers shuts down all unnecessary operating modules during standby and features a built-in clock for timed wake-up. The power supply design employs a 3.3V voltage regulator circuit and uses an ultra-low IQ regulator with reverse current protection for voltage conversion. This design achieves a quiescent current of only 10µA, improving battery life.
[0032] The central processing unit is electrically connected to the solar power generation and energy storage module, the cathodic protection data acquisition module, the data transmission module, and the data display module to control the coordinated operation between the modules. Furthermore, an intelligent switch is installed between the acquisition unit and the conversion unit in the cathodic protection data acquisition module to control the signal on / off. The central processing unit is also electrically connected to the intelligent switch and controls the on / off of the intelligent switch.
[0033] The data transmission module includes a GPRS conversion module, which identifies digital signals and converts them into GPRS data before sending them to the data display module. The data display module receives and identifies the GPRS data and includes both a server and a client, using a B / S architecture for data display.
[0034] Example 2 This embodiment provides a wireless transmission method for acquiring cathodic protection potential based on solar power, and is based on the wireless transmission device for acquiring cathodic protection potential based on solar power provided in Embodiment 1, including: The solar power generation and energy storage module converts solar energy into electrical energy through solar panels. After passing through a voltage conversion and stabilization unit, part of the electrical energy is stored in the energy storage unit, and the other part powers the device. The cathodic protection data acquisition module collects real-time potential information, including on-state potential, off-state potential, intermittent potential, natural potential, and AC interference voltage. It converts the collected potential information into digital signals. The central processing unit controls the data transmission module to identify the digital signals and sends them to the data display module for display via GPRS communication.
[0035] Various modifications and variations of this invention will be apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. A wireless transmission device for acquiring cathodic protection potential based on solar power, characterized in that, include: Solar power generation and energy storage module, cathodic protection data acquisition module, data transmission module, and data display module; The solar power generation and energy storage module includes a solar power panel, a voltage conversion and stabilization unit, and an energy storage unit connected in sequence; the cathodic protection data acquisition module includes an acquisition unit and a conversion unit, and an intelligent switch is set between the acquisition unit and the conversion unit to control the signal on / off; the cathodic protection data acquisition module is used to acquire potential information and convert analog signals into digital signals, and the data transmission module is used to identify digital signals and send them to the data display module.
2. The cathode protection potential acquisition and wireless transmission device based on solar power as described in claim 1, characterized in that, It also includes a central processing unit; the central processing unit is electrically connected to the solar power generation and storage module, the cathodic protection data acquisition module, the data transmission module and the data display module, and is used to control the coordinated operation between the modules; the central processing unit is also electrically connected to the smart switch, and the central processing unit controls the on and off of the smart switch.
3. The cathode protection potential acquisition and wireless transmission device based on solar power as described in claim 1, characterized in that, The solar panel is used to convert solar energy into electrical energy. Its output terminal is connected to the input terminal of the voltage conversion and regulation unit. The voltage conversion and regulation unit includes a DC-DC voltage regulator circuit. The output terminal of the voltage conversion and regulation unit is connected to the energy storage unit, which is a battery pack.
4. The cathode protection potential acquisition and wireless transmission device based on solar power as described in claim 1, characterized in that, The acquisition unit is an AD sampling chip, the conversion unit is a high-speed AD conversion circuit, and the high-speed AD conversion circuit is designed with an isolation module.
5. The wireless transmission device for acquiring cathode protection potential based on solar power as described in claim 1, characterized in that, The data transmission module includes a GPRS conversion module, which identifies digital signals, converts them into GPRS data, and then sends them to the data display module.
6. The cathode protection potential acquisition and wireless transmission device based on solar power as described in claim 5, characterized in that, The data display module receives and identifies GPRS data, and the data display module includes a server and a client, using a B / S architecture mode for data display.
7. The cathode protection potential acquisition and wireless transmission device based on solar power as described in claim 1, characterized in that, The potential information collected by the cathodic protection data acquisition module includes on-current potential, off-current potential, intermittent potential, natural potential, and AC interference voltage.
8. A method for wireless transmission of cathode protection potential based on solar power, wherein the device for wireless transmission of cathode protection potential based on solar power as described in any one of claims 1-7 is characterized in that, include: The solar power generation and energy storage module converts solar energy into electrical energy through solar panels. After passing through a voltage conversion and stabilization unit, part of the electrical energy is stored in the energy storage unit, and the other part powers the device. The cathodic protection data acquisition module collects real-time potential information, including on-state potential, off-state potential, intermittent potential, natural potential, and AC interference voltage. It converts the collected potential information into digital signals. The central processing unit controls the data transmission module to identify the digital signals and transmits them to the data display module for display via GPRS communication.
9. The method for wireless transmission of cathode protection potential based on solar power as described in claim 8, characterized in that, The power-off potential is acquired through a polarized test piece, which is connected to the cathodic protection data acquisition module.
10. The method for wireless transmission of cathode protection potential based on solar power as described in claim 8, characterized in that, The power outage potentials collected at multiple time points are processed, including removing the maximum and minimum values and then taking the average value.