DC current voltage power acquisition board

Abstract

The utility model discloses a DC current voltage power acquisition board, comprising a POE power supply module used for providing electric power for the acquisition board through an Ethernet cable; the MCU main control unit is connected to the POE power supply module, controls the coordination work of each component of the acquisition board, and calculates a power value based on the detected current and voltage data; the current detection circuit is electrically connected with the MCU main control unit and is used for detecting current data of direct current electric equipment and transmitting the current data to the MCU main control unit; and the voltage detection circuit is electrically connected with the MCU main control unit and is used for detecting voltage data of the direct current electric equipment and transmitting the voltage data to the MCU main control unit. By adopting the POE (Power over Ethernet) technology, the equipment can simultaneously realize power supply and data transmission through a single network cable, and does not depend on an independent power supply module and intermediate data conversion equipment, so that the installation structure is effectively simplified, the size is reduced, and the overall cost of the equipment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of acquisition board, more specifically to a DC current voltage power acquisition board. BACKGROUND

[0002] In the field of DC power supply equipment monitoring, traditional current, voltage and power acquisition devices usually have problems such as large size, high cost and complex installation. The structural design of these acquisition devices leads to their limitations in industrial and portable application scenarios, especially in scenarios that require real-time monitoring and data uploading. In existing technologies, there is usually a lack of direct networking function, and data acquisition devices need to connect to the network through an intermediate converter, which not only increases the overall size of the device, but also increases the difficulty and cost of installation and maintenance. In addition, the power supply mode of traditional devices mostly relies on independent power modules, further increasing the complexity of the system.

[0003] Existing devices usually use independent power supply and additional modules such as converters, which cannot achieve power supply and data transmission through a network cable, limiting the flexibility and practicality of the device in portable and compact applications. Due to the need for multiple independent module connections, the installation and maintenance of the system become more complex, and the use cost also increases. In addition, the data transmission path of existing devices is long, and data is uploaded to the server after passing through an intermediate converter, which not only increases the data transmission delay, but also may cause data loss or delay during the conversion process. SUMMARY

[0004] To solve the above problems, the utility model provides a DC current voltage power acquisition board, which only needs to connect a network cable to meet the device power supply and data transmission requirements. By directly uploading acquisition data to the server platform, the intermediate conversion link is reduced, further shortening the data transmission path, thereby improving the real-time performance and reliability of data transmission.

[0005] The utility model is implemented through the following technical solutions: a DC current voltage power acquisition board, comprising:

[0006] A POE power module is used to provide power to the acquisition board through an Ethernet cable;

[0007] An MCU master control unit is connected to the POE power module, controls the coordinated work of each component of the acquisition board, and calculates the power value based on the detected current and voltage data;

[0008] A current detection circuit is electrically connected to the MCU master control unit, used to detect the current data of the DC powered equipment and transmit it to the MCU master control unit;

[0009] A voltage detection circuit is electrically connected with the MCU main control unit, and is used for detecting voltage data of the direct current electrical equipment and transmitting the voltage data to the MCU main control unit.

[0010] A temperature detection circuit is electrically connected with the MCU main control unit, and is used for detecting temperature data of a working environment of the equipment.

[0011] A data storage unit is electrically connected with the MCU main control unit, and is used for storing current, voltage, power and temperature data processed by the MCU main control unit.

[0012] As a preferred technical solution, the application further comprises:

[0013] A network communication interface is connected with the MCU main control unit, and is used for uploading the data to a remote server platform through a TCP / UDP or HTTP protocol.

[0014] As a preferred technical solution, the application further comprises a state indication module, wherein the state indication module comprises a power supply indication lamp and a running indication lamp, the power supply indication lamp is used for indicating a power supply state of the acquisition board, and the running indication lamp is used for indicating a working state of the acquisition board and displaying a network connection state.

[0015] As a preferred technical solution, the MCU main control unit is configured to periodically upload the collected data to the server platform through the network communication interface, and a default data reporting period is 1 second.

[0016] As a preferred technical solution, the acquisition board can be automatically connected to the server platform, and supports configuration of a remote address and a port, and can be automatically restarted after the configuration is completed.

[0017] As a preferred technical solution, the running indication lamp of the state indication module slowly flashes when the acquisition board is running, and quickly flashes when network connection is successful.

[0018] As a preferred technical solution, the temperature detection circuit is provided with a temperature sensor, and the temperature sensor is used for detecting a temperature value.

[0019] The application has the following beneficial effects: first, by adopting POE (Power over Ethernet) technology, the equipment can realize power supply and data transmission through a single network cable, and no longer depends on independent power supply modules and intermediate data conversion equipment, so that the installation structure is effectively simplified, the volume is reduced, and the overall cost of the equipment is reduced.

[0020] Secondly, the utility model discloses no need intermediate conversion link, and the acquisition board can directly upload current, voltage, power and the like data to the server platform, realizes the real -time transmission of data, remarkably improves the efficiency and accuracy of data monitoring, reduces the delay or possible loss risk of data transmission, and the acquisition board is small in size, easy to install, is very suitable in the industrial and portable application scene of limited space or to real -time requirement higher uses, remarkably promotes the monitoring convenience and reliability of direct current electric equipment. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will be to the drawing needed to use in the embodiment or prior art description briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0022] Figure 1 It is the system block diagram of the utility model;

[0023] Figure 2 It is the circuit schematic diagram of MCU part of the utility model;

[0024] Figure 3 It is the circuit schematic diagram of debugging and programming interface of the utility model;

[0025] Figure 4 It is the operating state indicating circuit schematic diagram of the utility model;

[0026] Figure 5 It is the current voltage power detection circuit schematic diagram of the utility model;

[0027] Figure 6 It is the circuit schematic diagram of RJ45 network interface part of the utility model. DETAILED DESCRIPTION

[0028] All features disclosed in this specification, or all steps of any methods or processes disclosed, can be combined in any manner, except where features or steps are mutually exclusive.

[0029] Any feature disclosed in this specification, unless stated otherwise, can be replaced by any equivalent or similar feature, or by a feature that serves the same, equivalent or similar purpose. That is, each feature disclosed in this specification is one example of a range of equivalent or similar features.

[0030] As Figure 1As shown, the utility model relates to a kind of DC current voltage power acquisition board, the integration of power supply and data transmission is realized by POE (Power over Ethernet) technology in the acquisition board, only one network cable can meet the power supply demand of equipment, complete the transmission of data simultaneously, greatly simplify the installation structure.POE power module is the key component of the acquisition board, for providing stable power source for the acquisition board by Ethernet cable, so as not to use traditional independent power module, both save equipment space, reduce system complexity and overall cost.

[0031] The core control of acquisition board is responsible by MCU master unit, the MCU master unit is connected with POE power module, for controlling the coordinated work of each component on acquisition board.Specifically, MCU master unit carries out real-time processing based on the detected current and voltage data, calculates power value by built-in calculation program, to generate current, voltage and power and other electrical performance parameters about direct current electrical equipment.

[0032] Current detection circuit is electrically connected with MCU master unit, for acquiring the current data of direct current electrical equipment, voltage detection circuit is also connected with MCU master unit, for detecting the voltage data of equipment.Through the cooperation of current detection circuit and voltage detection circuit, MCU master unit can obtain the current and voltage change of equipment in real time, and calculate power value based on these data, to realize comprehensive monitoring of direct current electrical equipment power consumption.

[0033] In order to monitor the temperature of equipment working environment, acquisition board is also provided with temperature detection circuit.Temperature detection circuit is configured with temperature sensor, which can detect the temperature of the environment where the equipment is located in real time, and transmit temperature data to MCU master unit.MCU master unit processes these detection data uniformly, to generate comprehensive equipment running state information.Data storage unit is electrically connected with MCU master unit, mainly used for storing current, voltage, power and temperature data processed by MCU master unit, these data can be maintained in storage unit for a certain period of time, so as to analyze the working state of equipment and monitor the change trend of power consumption subsequently.

[0034] Acquisition board also contains network communication interface, which includes RJ45 interface, and the acquisition board is connected to network through the interface.Network communication interface is connected with MCU master unit, and MCU master unit can upload the collected data to remote server platform through TCP / UDP or HTTP protocol, to facilitate user to monitor and manage equipment data in real time.

[0035] MCU master unit is configured to upload the collected data to server platform periodically, and the default upload period is 1 second, which can ensure that the server end always receives the latest equipment working data, to realize efficient data transmission.

[0036] In addition, the acquisition board has the function of automatically connecting the server, and can automatically complete the connection after remotely configuring the server address and port, avoiding the tediousness of manual setting. When the remote configuration is completed, the acquisition board will automatically restart to ensure that the new configuration takes effect and establishes a stable connection.

[0037] The state indication module is also arranged on the acquisition board to intuitively display the running state of the acquisition board. The state indication module includes a power indicator and a running indicator, wherein the power indicator is used to indicate the power supply state of the acquisition board, and the power indicator is always on when the acquisition board is powered on; the running indicator displays the running and network connection state of the acquisition board.

[0038] When the acquisition board is running normally, the running indicator will display slow flashing; when the acquisition board successfully connects to the network, the running indicator will display fast flashing, so that the user can judge whether the acquisition board is in a networked state by observing the state of the indicator.

[0039] The DC current voltage power acquisition board of the present application greatly improves the portability and adaptability of the equipment through its miniaturized design, POE power supply mode and simple installation process, and is especially suitable for industrial and portable application scenarios with limited space or high real-time requirements. At the same time, on the basis of reducing intermediate conversion links, the acquisition board significantly improves the efficiency and reliability of data transmission, providing a more economical and efficient solution for users' equipment monitoring.

[0040] As shown in Figure 2 The MCU main control unit adopts an STM32F103RCT6 chip (identified as U3A and U3B), and the chip is connected to a 3.3V power supply provided by the power supply module through the VCC pin and the GND pin. The external crystal oscillator circuit (identified as OSC1 and OSC2) provides an 8MHz clock signal for the MCU through the C18 and C19 capacitors, ensuring the stable operation of the MCU. The pins of the MCU are connected to each detection module, for example, the PA0 pin receives the signal of the current detection circuit, the PA1 pin receives the voltage detection signal, the PB2 pin is connected to the temperature detection module, and the SPI interface (SPI1_MISO, SPI1_MOSI, SPI1_CLK) is connected to the network module to realize data transmission.

[0041] As shown in Figure 3 The debug interface is connected to the MCU through the JTAG protocol, including JTMS, JTCK, RESET and other signal pins, which are used for program burning and debugging of the MCU. The P1 and J4 terminals identified in the figure are external debug interfaces, and the TXD1 and RXD1 pins are used for UART communication to realize serial data interaction during external debugging.

[0042] As shown in Figure 4As shown, the running state indication circuit contains an indication LED (labeled as D4) and a current limiting resistor R24. The anode of D4 is connected to a 3.3V power supply, and is connected to the control pin of the MCU after current limiting through R24. The MCU controls the lighting mode of D4, which is slow flashing in normal operation, indicating that the device is in a normal state; and fast flashing when the device is successfully connected to the network. This design allows the user to determine the working and network connection state of the acquisition board by observing the state of the indication lamp.

[0043] As shown in Figure 5 , the current detection circuit and the voltage detection circuit are realized by using precision sampling resistors. The current detection circuit is connected in series with a low resistance resistor (I20D / I2D) in the current path of the device being measured, and a voltage difference is generated across the resistor when current passes through. The MCU acquires the voltage difference through its ADC channel, and calculates the current value. The voltage detection circuit uses a resistor voltage division method to reduce the high voltage signal to the ADC acquisition range of the MCU. The voltage division signal across the resistor is transmitted to the ADC interface of the MCU after filtering, and the MCU can calculate the operating voltage of the device according to the voltage value. The current and voltage data are combined, and the power data of the device is obtained through software operation of the MCU.

[0044] As shown in Figure 6 , the network interface uses a W5500 Ethernet chip (labeled as U_W5500), which is connected to the MCU through an SPI interface (SPI1_MISO, SPI1_MOSI, SPI1_CLK) for implementing Ethernet data transmission. The W5500 chip is connected to an RJ45 interface, and is connected to an external network through a standard Ethernet cable, and supports TCP / UDP or HTTP protocols for data uploading. The Ethernet cable for POE power supply can provide power for the entire acquisition board, while transmitting data through the RJ45 interface. The INT and RESET pins of the W5500 chip are connected to the control pins of the MCU, respectively, for state monitoring and initialization operation.

[0045] The temperature detection circuit is realized by using a temperature sensor (such as a thermistor or a semiconductor temperature sensor), and the output voltage signal of the sensor varies proportionally with the ambient temperature. The signal is input to the ADC channel of the MCU after filtering, and the MCU can read the ambient temperature data in real time and store or upload it together with other acquisition data.

[0046] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement without creative labor should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope defined in the claims.

Claims

1. A DC current, voltage, and power acquisition board, characterized in that, include: The PoE power module is used to provide power to the acquisition board via an Ethernet cable; The MCU main control unit is connected to the POE power module, controls the coordinated operation of each component on the acquisition board, and calculates the power value based on the detected current and voltage data. A current detection circuit, electrically connected to the MCU main control unit, is used to detect the current data of DC power equipment and transmit it to the MCU main control unit. A voltage detection circuit, electrically connected to the MCU main control unit, is used to detect the voltage data of DC electrical equipment and transmit it to the MCU main control unit. The temperature detection circuit is electrically connected to the MCU main control unit and is used to detect the temperature data of the equipment's working environment. The data storage unit is electrically connected to the MCU main control unit and is used to store the current, voltage, power and temperature data processed by the MCU main control unit.

2. The DC current, voltage, and power acquisition board according to claim 1, characterized in that, Also includes: The network communication interface includes an RJ45 interface, which is connected to the MCU main control unit and is used to upload the data to a remote server platform via TCP / UDP or HTTP protocols.

3. The DC current, voltage, and power acquisition board according to claim 1, characterized in that: It also includes a status indicator module, which includes a power indicator and a running indicator. The power indicator indicates the power supply status of the acquisition board, and the running indicator indicates the working status of the acquisition board and displays the network connection status.

4. The DC current, voltage, and power acquisition board according to claim 2, characterized in that: The MCU main control unit is configured to periodically upload the collected data to the server platform through the network communication interface, with a default data reporting period of 1 second.

5. The DC current, voltage, and power acquisition board according to claim 1, characterized in that: The acquisition board can automatically connect to the server platform and supports the configuration of remote address and port. It can automatically restart after configuration.

6. The DC current, voltage, and power acquisition board according to claim 3, characterized in that: The status indicator module's running indicator light flashes slowly when the acquisition board is running, and flashes rapidly when the network connection is successful.

7. The DC current, voltage, and power acquisition board according to claim 1, characterized in that: The temperature detection circuit is equipped with a temperature sensor, which detects the temperature value.

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