A pressboard data acquisition device supporting dual mains power mutual exclusion power supply and dual uplink communication

Abstract

The application is suitable for the technical field of power and industrial automation data acquisition, and provides a press plate data acquisition device supporting double-main-supply mutual exclusion power supply and double-uplink communication, comprising a press plate state acquisition unit, a double-supply mutual exclusion gating module, a main control processing module, a first communication module, a second communication module and a data storage module. The double-supply mutual exclusion gating module realizes physical mutual exclusion gating and priority switching of two main power supplies. The main control processing module is normally dormant and is awakened by a press plate displacement signal, intelligently selects a wired or wireless link as a main transmission channel after data acquisition, and the other link is used as a redundant backup. The application has the flexibility and safety of double-supply mutual exclusion power supply, the maintenance-free characteristics of ultra-low power consumption, and the high reliability of double-link redundant backup, and can simultaneously adapt to fixed point long-term monitoring and temporary point flexible deployment scenes, solving the problems of single power supply and communication mode, poor universality and insufficient reliability of existing devices.

Description

Technical Field

[0001] This invention relates to the field of power and industrial automation data acquisition technology, specifically a pressure plate data acquisition device that supports dual main power supply with mutual exclusion and dual uplink communication. Background Technology

[0002] Currently, power system load cell status data acquisition equipment is mainly divided into two categories of mainstream application equipment: One type of data acquisition equipment uses a fixed DC voltage power supply and a wired bus communication architecture, which can realize peer-to-peer networking and real-time data interaction between multiple devices on site. The data transmission is highly stable and has low latency, making it suitable for long-term fixed-point deployment. However, this type of equipment has a single power supply method and can only work by relying on the fixed power supply line on site. It cannot work independently without the power supply line, and the deployment site is greatly restricted by the power supply conditions. At the same time, it only has a single wired transmission method, making on-site wiring cumbersome and making it difficult to carry out long-distance flexible deployment and temporary point monitoring operations. Another type of data acquisition device uses an independent power supply mode of energy storage lithium battery and relies on wireless local area network to complete data transmission. It has the advantages of flexible deployment, no need for on-site wiring, and convenient installation. At the same time, the wireless transmission has a security authentication mechanism to ensure the privacy and security of data transmission. It is suitable for monitoring scenarios in outdoor areas without power supply. However, this type of device relies on battery power and cannot achieve long-term uninterrupted continuous operation. Its battery life is limited, and it is only equipped with a single wireless communication channel. In industrial sites with strong electromagnetic interference and weak wireless signals, it is very easy to experience problems such as data interruption, signal loss, and transmission delay. There is no backup transmission path, and the overall operational reliability is insufficient.

[0003] The two existing types of data acquisition devices have independent functions, and their hardware structure, power supply system, and communication architecture are not universally compatible. When used on-site, they need to be purchased, installed, and debugged separately according to different usage scenarios. The devices have poor versatility, and the project construction cost and subsequent operation and maintenance cost are relatively high. At the same time, the pressure plate status data acquired by the two types of devices are not in the same format, which makes it impossible to achieve data interoperability and sharing. It is difficult to form an integrated full-domain monitoring and management system, and it cannot simultaneously meet the dual practical needs of long-term stable monitoring of fixed sites and flexible and convenient monitoring of temporary points.

[0004] Therefore, in view of the above situation, there is an urgent need to provide a pressure plate data acquisition device that supports dual main power supply with mutual exclusion and dual uplink communication, so as to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure plate data acquisition device that supports dual main power supply with mutual exclusion and dual uplink communication, thereby solving the problems mentioned in the background art.

[0006] This invention is implemented as follows: a pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication, comprising: Pressure plate status acquisition unit, used to acquire pressure plate status signals; The dual-power supply mutual exclusion selection module has a first power input terminal, a second power input terminal, and a power output terminal, which are used to connect to a first main power supply and a second main power supply, and to realize mutual exclusion selection and electrical isolation between the two power supplies; the mutual exclusion selection includes: when the two power supplies are connected at the same time, one of them is selected to be turned on first; The main control processing module has its power supply terminal connected to the power output terminal of the dual power supply mutual exclusion gating module, and its signal input terminal connected to the output terminal of the pressure plate status acquisition unit. The main control processing module is normally in a sleep state and is awakened after receiving an interrupt signal from the pressure plate status acquisition unit. The first communication module is electrically connected to the main control processing module and is used to establish a wired communication link; And a second communication module, electrically connected to the main control processing module, for establishing a wireless communication link; The main control processing module is used to monitor the link status of the first communication module and the second communication module, and select one of them as the primary transmission link and the other as the backup transmission link. When the primary transmission link fails, it switches to the backup transmission link for data upload.

[0007] As a further aspect of the present invention: the dual-power mutual exclusion gating module integrates a voltage detection circuit and a mutual exclusion switch circuit. The voltage detection circuit is used to detect the connection status of the two power supplies, and the mutual exclusion switch circuit is used to physically turn on one power supply and turn off the other power supply according to the detection result of the voltage detection circuit.

[0008] As a further aspect of the present invention: the first main power supply is a DC industrial power supply, and the second main power supply is a lithium battery.

[0009] As a further aspect of the present invention: the DC industrial power supply is a 24V DC power supply; the lithium battery is a 3.6V non-rechargeable lithium battery.

[0010] As a further aspect of the present invention, the dual-power mutual exclusion selection module is configured such that when two power supplies are connected simultaneously, the first main power supply is turned on first, and the power supply path of the second main power supply is physically cut off through the mutual exclusion switch circuit.

[0011] As a further aspect of the present invention: the main control processing module is a low-power MCU with a static power consumption of less than 20μA; The output of the pressure plate status acquisition unit is directly connected to the external interrupt I / O port of the MCU. The external interrupt is triggered by the level signal transition to wake up the MCU.

[0012] As a further aspect of the present invention: the first communication module is an RS485 wired communication module; The second communication module is a trusted WLAN wireless communication module; The device also includes a security verification module, which works in conjunction with the second communication module to achieve identity verification and data encryption during wireless access.

[0013] As a further aspect of the present invention: the main control processing module is configured as follows: When both the first communication module and the second communication module are in normal working order, the first communication module is selected as the primary transmission link, and the second communication module is selected as the backup transmission link and remains in standby synchronization state.

[0014] As a further aspect of the present invention, it also includes a data storage module electrically connected to the main control processing module for local data caching; The data storage module is also used to automatically retain the collected data when the first communication module and the second communication module are interrupted at the same time, and to automatically retransmit the data after at least one communication link is restored.

[0015] As a further aspect of the present invention, it also includes a running indicator unit connected to the main control processing module, used to indicate the power supply status, communication status and fault status in real time.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Dual main power supplies provide mutually exclusive power, offering wide scenario adaptability and high safety. It employs two independent main power sources: a 3.6V / 17Ah non-rechargeable lithium battery and a 24V DC power supply, allowing for selective deployment in the field. When both power sources are connected simultaneously, the 24V supply takes priority, and the battery circuit is physically disconnected, completely eliminating the risk of parallel power supply connections. This design satisfies both long-term power monitoring in fixed cabinets and long-term deployment in outdoor locations without external power sources, overcoming the limitations of traditional equipment with single power supply and restricted application scenarios.

[0017] Ultra-low power consumption design, ultra-long maintenance-free lifespan. The static power consumption of the whole device is less than 20μA, and it adopts an IO port interrupt wake-up mechanism: the main control is in sleep mode under normal conditions, and only the interrupt pin is kept for monitoring; the interrupt wake-up is triggered only when the pressure plate changes position, and it immediately returns to sleep mode after completing the acquisition. It significantly reduces ineffective power consumption, and the 17Ah lithium battery can work stably for 6-8 years without replacement, resulting in extremely low operation and maintenance costs.

[0018] Dual uplink communication redundancy ensures high reliability in complex environments. It integrates RS485 wired peer-to-peer communication and trusted WLAN encrypted wireless communication: the wired link is resistant to electromagnetic interference and suitable for field networking; the wireless link is easy to deploy and provides authentication and data encryption capabilities. The dual links serve as redundant backups for each other, solving the problems of easy disconnection and weak interference resistance of traditional single-link devices, ensuring continuous and reliable data upload.

[0019] Integrated design reduces engineering costs. A single device integrates two power supply and two communication functions, replacing two existing independent data acquisition devices. This eliminates the need for separate procurement, wiring, and debugging, simplifying the construction process and significantly reducing equipment procurement, construction, and maintenance costs.

[0020] Safe, reliable, and easy to maintain. The trusted WLAN link supports identity authentication and data encryption to prevent unauthorized access and data tampering; the data storage module enables offline caching and recovery to avoid data loss; equipped with an operation indicator unit, it intuitively displays the power supply, communication, and fault status, making it suitable for various power grid monitoring scenarios and highly valuable for widespread adoption. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a block diagram of the overall structure of the present invention.

[0023] In the attached diagram: 1-Pressure plate status acquisition unit, 2-Dual power supply mutual exclusion selection module, 3-Main control processing module, 4-RS485 wired communication module, 5-Reliable WLAN wireless communication module, 6-Data storage module, 7-Security verification module, 8-ADC acquisition unit, 9-Data aggregation unit, 10-Management unit, 11-Operation indicator unit. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The present invention will be further explained below with reference to specific embodiments.

[0026] Please see Figure 1This invention provides a pressure plate data acquisition device that supports dual main power supply with mutual exclusion and dual uplink communication. It is suitable for pressure plate position monitoring and data transmission scenarios in substations, power distribution rooms, and industrial sites, and includes: Pressure plate status acquisition unit 1 is used to acquire pressure plate status signals; The dual power supply mutual exclusion selection module 2 has a first power input terminal, a second power input terminal, and a power output terminal, which are used to connect to a first main power supply and a second main power supply, and to realize mutual exclusion selection and electrical isolation between the two power supplies; the mutual exclusion selection includes: when the two power supplies are connected at the same time, one of them is selected to be turned on first; In a more specific example, the first main power supply is a DC industrial power supply, and the second main power supply is a lithium battery; preferably, the DC industrial power supply is a 24V DC power supply; and the lithium battery is a 3.6V non-rechargeable lithium battery.

[0027] The main control processing module 3 has its power supply terminal connected to the power output terminal of the dual power supply mutual exclusion gating module 2, and its signal input terminal connected to the output terminal of the pressure plate status acquisition unit 1. The main control processing module 3 is normally in a sleep state and is awakened after receiving an interrupt signal from the pressure plate status acquisition unit 1. The first communication module is electrically connected to the main control processing module 3 and is used to establish a wired communication link; preferably, the first communication module is an RS485 wired communication module 4. And a second communication module, electrically connected to the main control processing module 3, for establishing a wireless communication link; preferably, the second communication module is a trusted WLAN wireless communication module 5; The main control processing module 3 is used to monitor the link status of the first communication module and the second communication module, and select one of them as the primary transmission link and the other as the backup transmission link. When the primary transmission link fails, it switches to the backup transmission link for data upload.

[0028] In a more specific example, all modules are electrically connected to the main control processing module 3, and the functions and connections of each module are as follows: The pressure plate status acquisition unit 1 acquires the open and close position status of the relay protection pressure plate in real time, outputs standard digital level signals, collects and organizes the acquired raw level signals and position sensing signals, and stably transmits the standardized pressure plate status data to the main control processing module 3. The output of this module is directly connected to the external interrupt I / O port of the main control processing module 3. When the pressure plate changes position (opening or closing), the level signal transition triggers an external interrupt, instantly waking up the main control processing module 3 from its sleep state. After being woken up, the main control processing module 3 immediately reads and latches the current pressure plate state, completes data organization, packaging, and format unification encapsulation; after data processing is completed, the main control processing module 3 immediately shuts down all temporarily started peripherals and re-enters deep sleep state, retaining only the interrupt monitoring function.

[0029] The dual-power supply mutual exclusion selection module 2 is the core power supply adapter unit of this invention, configured with two independent main power supplies: one is a 24V DC industrial power supply, and the other is a 3.6V / 17Ah non-rechargeable lithium battery. The 24V power supply is stepped down by a DC-DC step-down circuit before being connected to the dual-power supply mutual exclusion selection module 2, while the lithium battery is directly connected. The module integrates voltage detection and mutual exclusion switch circuits, allowing for a one-to-one selection of the two power supplies. When both power supplies are connected simultaneously, the 24V path is prioritized, and the mutual exclusion switch circuit physically cuts off the lithium battery power supply path, completely eliminating the risk of parallel power supply connections.

[0030] The main control processing module 3, serving as the core control hub of the entire device, employs an industrial-grade low-power MCU, with a static power consumption of less than 20μA. Under normal conditions, the main control module remains in deep sleep mode, disabling all unnecessary peripherals such as the RS485 wired communication module 4, the trusted WLAN wireless communication module 5, and indicator lights. Only the external interrupt IO pin remains in real-time monitoring mode to minimize static power consumption. When the pressure plate changes position, an external interrupt is triggered to wake up the MCU, and it immediately goes into sleep mode after data acquisition is completed. It receives the acquired data uploaded by the pressure plate status acquisition unit 1, and completes data organization, classification, packaging, and unified format encapsulation. It monitors the signal connection status and network transmission quality of the two communication modules (RS485 wired communication module 4 and trusted WLAN wireless communication module 5) in real time. It has a built-in intelligent communication scheduling strategy, which autonomously adjusts the working mode of the wired bus communication path and the trusted wireless LAN communication path, and completes control logic such as dual-path data synchronous forwarding, automatic switching of primary and backup paths, and transmission priority allocation. At the same time, it responds to downlink commands issued by the background, such as parameter configuration, device debugging, and data retrieval.

[0031] The RS485 wired communication module 4 is electrically connected to the main control processing module 3 to establish a field wired bus communication network. This network supports interconnection of multiple similar data acquisition devices, enabling peer-to-peer data exchange and point-to-point real-time data transmission. It features stable transmission rates, strong anti-electromagnetic interference capabilities, and low data transmission latency, serving as the primary data uplink transmission path in fixed deployment scenarios. The trusted WLAN wireless communication module 5 integrates dedicated secure access and authentication functions, allowing access to compliant and trusted wireless LANs. It completes device identity verification, link encryption matching, and establishes a secure wireless data transmission channel. Relying on wireless communication, it eliminates the limitations of on-site cabling, enabling rapid deployment of devices at temporary locations and in areas without power supply. This allows for remote wireless uploading of pressure plate status data, serving as the primary transmission path for flexible deployment scenarios and as a backup transmission link in case of wired communication failures. The main control processing module 3 has a built-in intelligent communication scheduling strategy, which can autonomously select the primary communication link based on on-site network quality and link status, while the other link remains in standby for synchronization. When the primary link experiences signal interruption or transmission failure, the main control immediately switches to the backup link, ensuring uninterrupted uploading of pressure plate data to the management platform.

[0032] In this embodiment, the present invention aims to enable the device to support two independent main power supplies with mutual exclusion and isolation; integrate two uplink transmission paths, wired bus communication and encrypted wireless LAN communication, to achieve dual-path collaborative operation and fault redundancy backup; and integrate pressure plate status acquisition, intelligent power management, and multi-protocol data transmission functions into one, which greatly improves the device's scenario adaptability, operational stability and usage flexibility, reduces equipment procurement and maintenance costs, and realizes unified acquisition, unified uploading and unified management of pressure plate status data in all scenarios. When powered solely by a 3.6V / 17Ah non-rechargeable lithium battery, this device can operate continuously and stably for 6-8 years without battery replacement, thanks to its ultra-low power consumption mechanism of IO interrupt wake-up, position trigger acquisition, and peripheral sleep management. When connected to a 24V DC power supply, it is stably powered by an industrial power source, making it suitable for long-term online monitoring scenarios at fixed locations in substations and power distribution rooms.

[0033] In one embodiment of the present invention, please refer to Figure 1 The device also includes a data storage module 6, which is used to locally cache temporarily collected pressure plate status data, equipment operation logs, communication anomaly records and equipment preset configuration parameters. When both communication channels are interrupted at the same time, the data is retained locally and automatically retransmitted after communication is restored, thus avoiding the loss of monitoring data.

[0034] In one embodiment of the present invention, please refer to Figure 1The device also includes a security verification module 7, which is deployed within the trusted WLAN wireless communication module 5. The security verification module 7 completes wireless access authentication, data encryption and encapsulation, and integrity verification to prevent security issues such as unauthorized device access, data tampering, and data hijacking, and ensures the security and authenticity of monitoring data during wireless transmission.

[0035] In one embodiment of the present invention, please refer to Figure 1 The device also includes an external functional auxiliary module, which includes an ADC acquisition unit 8, a data collection unit 9, a management unit 10, and an operation indicator unit 11. The operation indicator unit 11 intuitively displays the power supply, communication, and fault status, and is suitable for various power pressure plate monitoring scenarios, making it highly valuable for promotion.

[0036] In summary, the workflow of this invention is as follows: After the equipment is powered on, the dual power supply mutual exclusion selection module 2 outputs a stable operating voltage for the system; the pressure plate status acquisition unit 1 acquires the on-site pressure plate operating status in real time, preprocesses it, and transmits it to the main control processing module 3; the main control processing module 3 completes data integration and encapsulation, and simultaneously starts wired and wireless communication channels; based on the on-site deployment environment and network signal quality, it automatically selects the main transmission channel to complete the data uplink upload, while the other channel is in a real-time standby synchronization state; when the main transmission channel experiences signal interruption or transmission failure, the main control processing module 3 immediately switches to the backup communication channel to continuously transmit data, ensuring uninterrupted monitoring; the equipment maintains continuous acquisition and communication functions throughout the process, synchronously records communication and pressure plate change logs, and retains them locally for future reference.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure plate data acquisition device supporting dual main power supply with mutual exclusion and dual uplink communication, characterized in that, include: Pressure plate status acquisition unit (1) is used to acquire pressure plate status signals; The dual power supply mutual exclusion selection module (2) has a first power input terminal, a second power input terminal and a power output terminal, which are used to connect to the first main power supply and the second main power supply, and realize the mutual exclusion selection and electrical isolation of the two power supplies; the mutual exclusion selection includes: when the two power supplies are connected at the same time, one of them is selected to be turned on first; The main control processing module (3) has its power supply terminal connected to the power output terminal of the dual power supply mutual exclusion selection module (2) and its signal input terminal connected to the output terminal of the pressure plate status acquisition unit (1). The main control processing module (3) is normally in a sleep state and is awakened after receiving the interrupt signal from the pressure plate status acquisition unit (1). The first communication module is electrically connected to the main control processing module (3) and is used to establish a wired communication link; And a second communication module, which is electrically connected to the main control processing module (3) for establishing a wireless communication link; The main control processing module (3) is used to monitor the link status of the first communication module and the second communication module, and select one of them as the primary transmission link and the other as the backup transmission link. When the primary transmission link fails, it switches to the backup transmission link to upload data.

2. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication as described in claim 1, characterized in that, The dual-power mutual exclusion gating module (2) integrates a voltage detection circuit and a mutual exclusion switch circuit. The voltage detection circuit is used to detect the connection status of the two power supplies, and the mutual exclusion switch circuit is used to physically turn on one power supply and turn off the other power supply according to the detection result of the voltage detection circuit.

3. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication according to claim 1 or 2, characterized in that, The first main power source is a DC industrial power source, and the second main power source is a lithium battery.

4. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication according to claim 3, characterized in that, The DC industrial power supply is a 24V DC power supply; the lithium battery is a 3.6V non-rechargeable lithium battery.

5. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication according to claim 4, characterized in that, The dual power supply mutual exclusion selection module (2) is configured such that when two power supplies are connected at the same time, the first main power supply is turned on first, and the power supply path of the second main power supply is physically cut off through the mutual exclusion switch circuit.

6. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication according to claim 1, characterized in that, The main control processing module (3) is a low-power MCU with a static power consumption of less than 20μA; The output of the pressure plate status acquisition unit (1) is directly connected to the external interrupt IO port of the MCU, and the external interrupt is triggered by the level signal transition to wake up the MCU.

7. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication according to claim 1, characterized in that, The first communication module is an RS485 wired communication module (4); The second communication module is a trusted WLAN wireless communication module (5); The device also includes a security verification module (7), which works in conjunction with the second communication module to achieve identity verification and data encryption during wireless access.

8. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication according to claim 1, characterized in that, The main control processing module (3) is configured as follows: When both the first communication module and the second communication module are in normal working order, the first communication module is selected as the primary transmission link, and the second communication module is selected as the backup transmission link and remains in standby synchronization state.

9. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication according to claim 1, characterized in that, It also includes a data storage module (6), which is electrically connected to the main control processing module (3) and is used for local data caching; The data storage module (6) is also used to automatically retain the collected data when the first communication module and the second communication module are interrupted at the same time, and to automatically retransmit the data after at least one communication link is restored to normal.

10. The pressure plate data acquisition device supporting dual main power supply mutual exclusion and dual uplink communication according to claim 1, characterized in that, It also includes a running indicator unit (11), which is connected to the main control processing module (3) and is used to indicate the power supply status, communication status and fault status in real time.

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