Edge computing monitoring terminal equipment based on multi-source data acquisition and intelligent regulation and control

Abstract

The invention discloses edge computing monitoring terminal equipment based on multi-source data acquisition and intelligent regulation and control in the field of low-voltage power distribution and utilization, and aims to solve the technical problem that traditional power distribution network terminal equipment is insufficient in adaptability when facing high concurrency, multi-service access and flexible expansion requirements. The equipment comprises a plastic shell and an antenna, wherein the plastic shell comprises a plastic shell upper cover and a plastic shell lower cover, the plastic shell upper cover is detachably connected with the antenna, the plastic shell upper cover and the plastic shell lower cover are buckled through a plastic buckle, and both the plastic shell upper cover and the plastic shell lower cover are provided with external terminals for external connection; an input / output circuit board, a main control circuit board and an alternating current acquisition circuit board are arranged in the plastic shell, and the main control circuit board is electrically connected with the input / output circuit board and the alternating current acquisition circuit board through pin headers and female headers respectively. According to the invention, comprehensive acquisition of power supply and consumption information of a power distribution area, real-time monitoring of equipment states, local analysis and decision of faults and multi-service calculation can be realized.

Description

[0001] This invention relates to an edge computing monitoring terminal device based on multi-source data acquisition and intelligent control, belonging to the technical field of low-voltage power distribution. Background Technology

[0002] Currently, the power distribution network is facing multiple challenges, including rapid development, diversified customer service demands, increased user dependence on electricity, growing pressure to integrate clean energy, and intensified impacts from variable loads such as electric vehicle charging stations. Traditional power distribution network management models are no longer adequate for the demands of this new era. There is an urgent need to deepen the application of advanced technologies such as cloud computing, big data, the Internet of Things, mobile internet, and artificial intelligence to fundamentally improve the construction, operation, and management of the power distribution network, thereby achieving leapfrog development and meeting the strategic needs of "re-electrification" in the energy transition. Summary of the Invention

[0003] The purpose of this invention is to provide an edge computing monitoring terminal device based on multi-source data acquisition and intelligent control, which can solve the problem of insufficient adaptability of traditional power distribution network management mode when facing high concurrency, multi-service access and flexible expansion requirements, and meet the field application requirements of high performance, large capacity storage and diverse acquisition objects.

[0004] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution.

[0005] In a first aspect, the present invention provides an edge computing monitoring terminal device based on multi-source data acquisition and intelligent control, including a plastic housing and an antenna; wherein, the plastic housing includes a plastic housing upper cover and a plastic housing lower cover, the plastic housing upper cover is detachably connected to the antenna, the plastic housing upper cover and the plastic housing lower cover are fastened together by plastic buckles, and both the plastic housing upper cover and the plastic housing lower cover are provided with external terminals for external connection; The plastic housing contains an input / output circuit board, a main control circuit board, and a cross-connect circuit board. The main control circuit board is electrically connected to the input / output circuit board and the cross-connect circuit board via pin headers and socket headers.

[0006] In conjunction with the first aspect, the plastic housing cover is further provided with a rocker switch hole and an antenna hole, and the plastic housing cover is connected to the main control circuit board through the rocker switch hole and the antenna hole.

[0007] The bottom of the plastic housing cover is provided with a guide rail slot, and the plastic housing cover is connected to an external guide rail through the guide rail slot.

[0008] In conjunction with the first aspect, a nameplate is further fixed to the outer surface of the plastic housing cover by 3M adhesive.

[0009] With reference to the first aspect, further, the input and output circuit board comprises: a remote signaling circuit connected to a GPIO pin of the master circuit board; a remote control circuit connected to a GPIO pin of the master circuit board; a 485 communication circuit connected to a serial port of the master circuit board; a 232 communication circuit connected to a serial port of the master circuit board; an LED display circuit connected to a GPIO pin of the master circuit board.

[0010] With reference to the first aspect, further, the remote signaling circuit comprises an optocoupler isolator, and a signal of the external terminal is transmitted to the GPIO pin of the master circuit board through the optocoupler isolator; the remote control circuit comprises a relay, and an output signal of the GPIO pin of the master circuit board is optocoupler isolated by the optocoupler isolator, and the optocoupler isolated output signal is transmitted to a coil of the relay to drive the coil of the relay to act; the 485 communication circuit comprises a digital isolator and a 485 control chip, and the serial port of the master circuit board is connected to the 485 control chip through the digital isolator; the 232 communication circuit comprises a digital isolator and a 232 control chip, and the serial port of the master circuit board is connected to the 232 control chip through the digital isolator; the LED display circuit comprises an LED lamp, and the GPIO pin of the master circuit board is connected to the LED lamp through a current-limiting resistor.

[0011] With reference to the first aspect, further, A and B signal lines of the 485 control chip are connected to the external terminal, and TX and RX signal lines of the 232 control chip are connected to the external terminal.

[0012] With reference to the first aspect, further, the master circuit board comprises: a core board comprising an Ethernet controller; a watchdog circuit connected to the core board, configured to receive a watchdog feeding signal of the core board, and output a reset signal to the core board when the core board stops feeding; a clock circuit connected to the core board through a 12C bus; a GPS circuit connected to the core board through a serial communication interface; an SD card circuit connected to the core board through a memory card bus; a Bluetooth circuit comprising a Bluetooth module connected to the core board through a serial port; Ethernet circuit, including a PHY chip connected with the Ethernet controller through an MII interface, and the PHY chip is connected with an external Ethernet interface through an isolation transformer; Encryption circuit, including an encryption chip connected with the core board through an SPI bus, for encrypting / decrypting data to be encrypted.

[0013] In combination with the first aspect, further, the exchange and acquisition circuit board comprises: Power supply circuit, for connecting with external input 24V DC and converting the 24V DC into 5V DC to provide working power for the exchange and acquisition circuit board itself and the master control circuit board; Exchange and acquisition metering circuit, including an exchange and acquisition circuit board connected with external voltage and current transformers and converting signals from the voltage and current transformers into voltage signals; Small signal sampling circuit, for receiving external 4~20mA analog signals and converting the analog signals into standard voltage signals through the pin header to be sent to the master control circuit board for analog-digital conversion.

[0014] In combination with the first aspect, further, the exchange and acquisition metering circuit comprises a metering chip, and the voltage signals are sampled and processed through the metering chip to obtain electric energy metering data and upload the electric energy metering data to the core board.

[0015] In combination with the first aspect, further, the small signal sampling circuit comprises a sampling resistor and an operational amplifier; The analog signals are converted into voltage signals through the sampling resistor and are conditioned through the operational amplifier to form standard voltage signals suitable for sampling; The standard voltage signals are sent to the master control circuit board 5 for analog-digital conversion and are finally sent to the AD sampling channel of the core board for sampling processing.

[0016] Compared with the prior art, the present application has the following beneficial effects: The present application realizes efficient interconnection of input and output, master control and exchange and acquisition circuit boards in a compact plastic shell, greatly reduces the volume and cost, and also realizes on-site analysis and intelligent decision-making of data with the help of a four-core CPU and an edge computing operating system; at the same time, the modular communication interface and the software and hardware decoupling design enable the monitoring terminal device to flexibly adapt to various metering schemes and communication protocols, support plug-and-play and function expansion of various low-voltage intelligent devices, and rely on the built-in security chip and the end-cloud collaborative mechanism to improve the multi-service concurrent processing capability of the power distribution area while comprehensively guaranteeing the safety and reliability of data interaction and terminal application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 shows a structural schematic diagram of an edge computing monitoring terminal device provided by an embodiment of the present application; Figure 2 Fig. 2 shows a circuit diagram of an incoming and outgoing circuit board provided by an embodiment of the present application; Figure 3 Fig. 3 shows a circuit diagram of a main control circuit board provided by an embodiment of the present application; Figure 4 Fig. 4 shows a circuit board for exchange and collection provided by an embodiment of the present application; In the figure: 1, nameplate; 2, upper cover of plastic shell; 3, antenna; 4, incoming and outgoing circuit board; 5, main control circuit board; 6, circuit board for exchange and collection; 7, lower cover of plastic shell; 8, plastic buckle. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described in detail below with the help of the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0019] The term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " generally represents that the front and rear associated objects are in an "or" relationship. Embodiment 1

[0020] Referring to Figure 1 , this embodiment introduces an edge computing monitoring terminal (DTMU) device based on multi-source data acquisition and intelligent control. The monitoring terminal device comprises a plastic shell and an antenna 3, which is a GPS / 4G communication antenna. The plastic shell comprises a plastic rear passage upper cover 2 and a plastic rear passage lower cover 7, which are fixed by being buckled together through a plastic buckle 8, and the material of the plastic buckle 8 is PC+10% GF.

[0021] Outside the plastic shell, the antenna 3 is detachably connected with the plastic shell upper cover 2, and the nameplate 1 is fixed on the outer surface of the plastic shell upper cover 2 by 3M glue, and the material thereof is PC.

[0022] The incoming and outgoing circuit board 4, the main control circuit board 5 and the circuit board for exchange and collection 6 are installed inside the plastic shell. The main control circuit board 5 is electrically connected with the incoming and outgoing circuit board 4 and the circuit board for exchange and collection 6 respectively through the docking of the pin and the female pin.

[0023] The plastic housing top cover 2 is also provided with a rocker switch hole and an antenna hole, which are connected to the main control circuit board 5. The bottom of the plastic housing bottom cover 7 is provided with a guide rail slot for mounting the entire monitoring terminal equipment on an external guide rail. That is, the plastic housing bottom cover 7 is connected to the external guide rail through the guide rail slot. Both the plastic housing top cover 2 and the plastic housing bottom cover 7 are provided with external terminals, external network port terminals, antenna adapter holes, and indicator light holes for external connections. Example 2

[0024] As an intelligent converged terminal for a distribution radio area, the core functions of the DTMU device are achieved through the collaborative operation of three internal circuit boards, as detailed below: ① The power acquisition circuit board is responsible for the source acquisition and conversion of power parameters. Its internal circuit structure is as follows: See Figure 4 The cross-sampling circuit board 6 serves as the power supply and signal acquisition center for the monitoring terminal equipment, integrating power management, metering, and sampling functions. It includes a power supply circuit, a cross-sampling metering circuit, and a small signal sampling circuit, as detailed below: The power supply circuit is used to connect to the external 24V DC power input, and through its internal power module, it stably converts the 24V DC power into 5V DC power, thereby providing working power for the cross-connect circuit board 6 itself and the main control circuit board 5. In terms of metering, an inter-metering circuit is adopted, which includes a metering chip. The inter-metering circuit board is connected to an external voltage transformer and current transformer through the inter-metering circuit, thereby converting the signal from the transformer into a standard voltage signal. The voltage signal is then sampled and processed by the metering chip to obtain power metering data, and the processed power metering data is uploaded to the core board to achieve accurate measurement of power parameters.

[0025] The small-signal sampling circuit includes a sampling resistor and an operational amplifier, and can receive external analog signals of 4~20mA. This analog signal is first converted into a voltage signal by the sampling resistor, then conditioned by the operational amplifier to form a standard voltage signal suitable for sampling. This standard voltage signal is then transmitted to the main control circuit board 5 via pin headers and sockets for analog-to-digital conversion, and finally sent to the AD sampling channel of its core board for sampling processing, thereby expanding the monitoring terminal equipment's ability to access analog sensors.

[0026] ② All the data collected above are aggregated to the main control circuit board 5 via pin header and socket connectors. Its internal circuit structure is as follows: See Figure 3 The main control circuit board 5 expands upon the core board, which integrates an Ethernet controller. The main control circuit board 5 includes: Core board; The watchdog circuit is connected to the core board and is used to receive the watchdog signal sent by the core board. When the core board stops feeding the watchdog, it sends a reset signal back to the core board to monitor the operating status of the terminal device. The clock circuit is connected to the core board via the I2C bus, providing it with a precise time reference. The GPS circuit is connected to the core board via a serial communication interface and is used to transmit the received positioning messages to the core board for processing. The SD card circuit is connected to the core board via the memory card bus to enable local storage of large amounts of data. Bluetooth circuitry, including a Bluetooth module, is connected to the core board via a serial port; In terms of network communication, this also includes Ethernet circuits and encryption circuits. Among them, The Ethernet circuit includes a PHY chip, which interacts with the Ethernet controller via the MII interface and is connected to an external Ethernet interface via an isolation transformer, thereby achieving signal isolation and stable transmission.

[0027] The encryption circuit includes an encryption chip, which is connected to the core board via the SPI bus. It is responsible for encrypting / decrypting critical data exchanged between the core board and the master station, ensuring the security of data transmission.

[0028] In summary, the main control circuit board 5 serves as the processing hub. Its core board runs an edge computing operating system, performing localized analysis and intelligent decision-making on received data. It also ensures the security of data transmission and storage through integrated encryption chips and security proxy services. The main control circuit board 5 further maintains stable system operation through its peripheral circuits, such as a watchdog circuit monitoring program status, a clock circuit providing a time reference, a GPS circuit acquiring location information, an SD card circuit enabling large-capacity data storage, a Bluetooth circuit enabling short-range wireless communication, and an Ethernet circuit that uses a PHY chip and isolation transformer to achieve network communication with the upper-level system.

[0029] ③ The control and interaction of the monitoring terminal equipment are performed by the input / output circuit board, and its internal circuit structure is as follows: See Figure 2 The input / output circuit board 4 integrates a remote signaling circuit, a remote control circuit, a 485 communication circuit, a 232 communication circuit, and an LED display circuit. Among them, the remote signaling circuit, the remote control circuit, and the LED display circuit are all connected to the GPIO pins of the main control circuit board 5; the 485 communication circuit and the 232 communication circuit are connected to the serial port of the main control circuit board 5.

[0030] In a further embodiment of the present invention, the remote signaling circuit includes an optocoupler isolator, and the signal from the external terminal is sent to the GPIO pin of the main control circuit board 5 via the optocoupler isolator; The remote control circuit includes a relay. The output signal of the GPIO pin of the main control circuit board 5 is first optocoupled and isolated by an optocoupler. Then, the isolated output signal is sent to the relay to drive the relay coil. The relay contacts are directly connected to external terminals to realize the on / off control of external circuits.

[0031] The 485 communication circuit includes a digital isolator and a 485 control chip. The serial port signal of the main control circuit board 5 is transmitted to the 485 control chip through the digital isolator. The A and B differential signal lines of the 485 control chip are connected to external terminals.

[0032] The 232 communication circuit includes a digital isolator and a 232 control chip. The serial port signal of the main control circuit board 5 is transmitted to the 232 control chip through the digital isolator; wherein, the TX (transmit) and RX (receive) signal lines of the 232 control chip are connected to external terminals.

[0033] The LED display circuit includes LED lights, which are connected to the LED lights via current-limiting resistors from the GPIO pins of the main control circuit board 5, and are used to display the working status of the monitoring terminal equipment.

[0034] In summary, commands from the main control circuit board are sent through GPIO pins, and remote control signals drive relays via optocoupler isolation to control the on / off state of external devices; the LED display circuit directly indicates the status. Simultaneously, external switch status and other remote signaling signals are sent to the GPIO pins after optocoupler isolation. At the communication level, the serial port of the main control circuit board 5 is connected to the 485 and 232 control chips via digital isolators, enabling data interaction with on-site intelligent devices such as electricity meters and charging piles.

[0035] Ultimately, the monitoring terminal equipment, through uplink and downlink communication interface extensions (such as LTE, PLC-IoT, RF, etc.), uploads the processing results and key data to the new generation of distribution substation automation master station, and receives master station instructions under the established end-to-cloud collaborative mechanism. This enables comprehensive collection of power supply and consumption information of the distribution substation, real-time monitoring of equipment status, on-site analysis and decision-making of faults, and cross-business collaborative computing, supporting the comprehensive needs of marketing, power distribution, and emerging businesses.

[0036] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. An edge computing monitoring terminal device based on multi-source data acquisition and intelligent control, characterized in that, It includes a plastic housing and an antenna (3); wherein the plastic housing includes a plastic housing top cover (2) and a plastic housing bottom cover (7), the plastic housing top cover (2) is detachably connected to the antenna (3), the plastic housing top cover (2) and the plastic housing bottom cover (7) are fastened and fixed by plastic buckles (8), and both the plastic housing top cover (2) and the plastic housing bottom cover (7) are provided with external terminals for external connection; The plastic housing contains an input / output circuit board (4), a main control circuit board (5), and a cross-connect circuit board (6). The main control circuit board (5) is electrically connected to the input / output circuit board (4) and the cross-connect circuit board (6) via pin headers and sockets.

2. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 1, characterized in that, The plastic housing cover (2) is provided with a rocker switch hole and an antenna hole, and the plastic housing cover (2) is connected to the main control circuit board (5) through the rocker switch hole and the antenna hole; The bottom of the plastic housing cover (7) is provided with a guide rail slot, and the plastic housing cover (7) is connected to the external guide rail through the guide rail slot.

3. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 2, characterized in that, The nameplate (1) is fixed to the outer surface of the plastic housing cover (2) by 3M adhesive.

4. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 1, characterized in that, The input / output circuit board (4) includes: The remote signaling circuit is connected to the GPIO pin of the main control circuit board (5); The remote control circuit is connected to the GPIO pin of the main control circuit board (5); The 485 communication circuit is connected to the serial port of the main control circuit board (5); 232 communication circuit, connected to the serial port of the main control circuit board (5); The LED display circuit is connected to the GPIO pin of the main control circuit board (5).

5. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 4, characterized in that, The remote signaling circuit includes an optocoupler isolator, and the signal from the external terminal is sent to the GPIO pin of the main control circuit board (5) via the optocoupler isolator; The remote control circuit includes a relay. The output signal of the GPIO pin of the main control circuit board (5) is optically isolated by the optocoupler and the optically isolated output signal is sent to the coil of the relay to drive the coil of the relay to operate. The 485 communication circuit includes a digital isolator and a 485 control chip. The serial port of the main control circuit board (5) is connected to the 485 control chip via the digital isolator. The 232 communication circuit includes a digital isolator and a 232 control chip. The serial port of the main control circuit board (5) is connected to the 232 control chip through the digital isolator. The LED display circuit includes LED lights, and the GPIO pins of the main control circuit board (5) are connected to the LED lights through current-limiting resistors.

6. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 5, characterized in that, The A and B signal lines of the 485 control chip are connected to the external terminal, and the TX and RX signal lines of the 232 control chip are connected to the external terminal.

7. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 1, characterized in that, The main control circuit board (5) includes: The core board includes the Ethernet controller; The watchdog circuit is connected to the core board and is used to receive the watchdog signal from the core board and output a reset signal to the core board when the core board stops feeding the watchdog. The clock circuit is connected to the core board via an I2C bus; The GPS circuit is connected to the core board via a serial communication interface; The SD card circuit is connected to the core board via the memory card bus. Bluetooth circuitry, including a Bluetooth module, is connected to the core board via a serial port; The Ethernet circuit includes a PHY chip, which is connected to the Ethernet controller via an MII interface, and the PHY chip is connected to an external Ethernet interface via an isolation transformer. The encryption circuit, including an encryption chip, is connected to the core board via an SPI bus to encrypt / decrypt data.

8. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 7, characterized in that, The exchange circuit board (6) includes: The power supply circuit is used to connect to the external input 24V DC power and convert the 24V DC power into 5V DC power to provide working power for the cross-connect circuit board (6) itself and the main control circuit board (5); The cross-feed metering circuit includes a cross-feed circuit board, which is connected to external voltage transformers and current transformers and converts signals from the voltage transformers and current transformers into voltage signals. The small signal sampling circuit is used to receive external 4~20mA analog signals, and after conditioning the analog signals into standard voltage signals, it is sent to the main control circuit board (5) through the pin header and socket for analog-to-digital conversion.

9. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 8, characterized in that, The cross-feed metering circuit includes a metering chip. The voltage signal is sampled and processed by the metering chip to obtain power metering data, and the power metering data is uploaded to the core board.

10. The edge computing monitoring terminal device based on multi-source data acquisition and intelligent control according to claim 8, characterized in that, The small-signal sampling circuit includes a sampling resistor and an operational amplifier; The analog signal is converted into a voltage signal by the sampling resistor, and then conditioned by the operational amplifier to form a standard voltage signal suitable for sampling. The standard voltage signal is transmitted to the main control circuit board (5) through the pin header and socket for analog-to-digital conversion, and finally sent to the AD sampling channel of its core board for sampling processing.

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