Multi-channel multi-communication protocol intelligent data collector

Abstract

The utility model relates to the technical field of industrial sensing data acquisition, in particular to a multichannel multi-communication protocol intelligent data acquisition unit, which comprises an MCU (Microprogrammed Control Unit), a display screen, a communication module, an AD (Analog to Digital) conversion unit and a power management unit, the communication module comprises a Profinet chip, the AD conversion unit comprises a plurality of A / D (Analog to Digital) converters, and the A / D converters are connected with the display screen. The interface of each A / D converter is provided with eight acquisition channels, and the power management unit provides required working power for the MCU unit, the display screen, the communication module and the AD conversion unit. According to the utility model, independent power supply for an external sensor is not needed, a Profinet communication protocol is realized, redundant communication ports are realized, and the stability of a communication network is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial sensor data acquisition, in particular to a multi-channel multi-communication protocol intelligent data collector. Background Art

[0002] An intelligent data acquisition device is a device that exchanges data with a distributed control system and is widely used in industrial field data acquisition, such as temperature, pressure, current, voltage, and flow.

[0003] The current intelligent data collectors have the following main shortcomings:

[0004] 1. The existing data logger itself does not have a power supply function, and the external sensor / instrument needs to add an additional power supply, which is costly;

[0005] 2. The existing data collector has few channels and a single communication protocol, which cannot meet the usage requirements of different scenarios;

[0006] 3. The existing data collector needs to add a communication module, and the added communication module leads to poor stability of the communication network. Utility Model Content

[0007] The utility model provides a multi-channel multi-communication protocol intelligent data collector, which does not need to supply power to external sensors separately, realizes the Profinet communication protocol at the same time, realizes redundant communication ports, and ensures the stability of the communication network.

[0008] In order to achieve the purpose of the utility model, the technical solution adopted is: a multi-channel multi-communication protocol intelligent data collector is placed in a protective chassis, the intelligent data collector includes an MCU unit, a display screen, a communication module, an AD conversion unit and a power management unit, the communication module includes a Profinet chip, the AD conversion unit includes multiple A / D converters, and the interface of each A / D converter is provided with 8 acquisition channels. The power management unit provides the required working power for the MCU unit, the display screen, the communication module and the AD conversion unit.

[0009] As an optimization solution of the utility model, the communication module also includes a Profibus-DP communication unit; the Profinet chip is connected to the MCU unit, the 12th pin of the Profinet chip U3 is connected to the 87th pin of the MCU unit, the 13th pin of the Profinet chip U3 is connected to the 69th pin of the MCU unit, and the 14th pin of the Profinet chip U3 is connected to the 70th pin of the MCU unit.

[0010] As an optimization solution of the utility model, the power management unit includes an AC / DC conversion module, a buck module, a boost module and a voltage stabilizing module. The AC / DC conversion module converts AC power into DC power, the voltage stabilizing module is used to stabilize DC power, the boost module boosts the stabilized DC power to power the sensor connected to the A / D converter, and the buck module steps down the stabilized DC power to power the MCU unit, display screen and communication module.

[0011] As an optimization scheme of the utility model, the AC-DC conversion module includes a power transformer U3, a fuse F1, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a diode D6, a diode D7 and a diode D8, the fuse F1 is connected to the 1st pin of the power transformer U3, the diode D1 is connected between the 12th pin of the power transformer U3 and the power supply VCC1, the diode D2 is connected between the 14th pin of the power transformer U3 and the ground, the diode D3 is connected between the 12th pin of the power transformer U3 and the ground, the diode D4 is connected between the 14th pin of the power transformer U3 and the power supply VCC1, the diode D5 is connected between the 17th pin of the power transformer U3 and the power supply VCC2, the diode D6 is connected between the 17th pin of the power transformer U3 and the ground, the diode D7 is connected between the 19th pin of the power transformer U3 and the ground, and the diode D8 is connected between the 19th pin of the power transformer U3 and the power supply VCC2.

[0012] As an optimization solution of the utility model, the boost module includes a boost chip, an inductor L1, a transistor M1, a voltage regulator diode D1 and a resistor R CS , the inductor L1 is connected between the 6th pin of the boost chip and the drain of the transistor M1, the voltage regulator diode D1 is connected between the drain of the transistor M1 and the output terminal, the gate of the transistor M1 is connected to the 8th pin of the boost chip, and the resistor R CS Connected between the source of transistor M1 and ground.

[0013] As an optimization solution of the utility model, the voltage stabilizing module includes a capacitor C83, an LDO linear voltage regulator U66, a capacitor C82 and a polarity capacitor CT6, the capacitor C83 is connected between the second pin of the LDO linear voltage regulator U66 and the ground, the capacitor C82 is connected between the third pin of the LDO linear voltage regulator U66 and the ground, and the polarity capacitor CT6 is connected between the third pin of the LDO linear voltage regulator U66 and the ground.

[0014] As an optimization scheme of the utility model, a multi-channel multi-communication protocol intelligent data collector is provided with a wiring board, and a communication terminal is installed on the top of the wiring board. The communication terminal includes four communication interfaces, and the communication module also includes a first communication module and a second communication module. The first communication interface is electrically connected to the first communication module, and the second communication interface is electrically connected to the second communication module. The first communication interface and the second communication interface are both Profibus-DP communication connectors, and the third communication interface and the fourth communication interface are both electrically connected to the Profibus-DP communication unit. The third communication interface and the fourth communication interface are both RJ45 network ports.

[0015] The utility model has positive effects:

[0016] 1) The utility model uses a power management unit to supply power to external sensors separately, eliminating the need for a dedicated power supply, reducing investment costs and expanding the use scenarios and scope of the data collector;

[0017] 2) The utility model implements the Profinet communication protocol through the Profinet chip and realizes redundant communication ports through the RJ45 network port to ensure the stability of the communication network. It makes communication configuration easier and can easily realize data exchange with the automation control system;

[0018] 3) The utility model meets the needs of various scenarios by supporting communication protocols. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is the overall principle block diagram of the utility model;

[0021] Figure 2 It is the principle diagram of the Profinet chip of the utility model;

[0022] Figure 3 It is a principle block diagram of the power management unit of the utility model;

[0023] Figure 4 It is the circuit principle diagram of the AC / DC conversion module of the utility model;

[0024] Figure 5 This is a circuit schematic diagram of the boost module of the utility model;

[0025] Figure 6 This is the circuit schematic diagram of the voltage stabilizing module of the utility model;

[0026] Figure 7 It is a circuit schematic diagram of the voltage reduction module of the utility model. DETAILED DESCRIPTION

[0027] like Figure 1 As shown, the utility model discloses a multi-channel multi-communication protocol intelligent data collector, which is placed in a protective chassis. The intelligent data collector includes an MCU unit, a display screen, a communication module, an AD conversion unit and a power management unit. The communication module includes a Profinet chip, and the AD conversion unit includes multiple A / D converters. The interface of each A / D converter is provided with 8 acquisition channels. The power management unit provides the required working power for the MCU unit, the display screen, the communication module and the AD conversion unit. The protective chassis has the functions of dustproof, waterproof and anti-corrosion.

[0028] Each A / D converter interface is equipped with 8 acquisition channels, and each channel can select different types of analog input signals through the panel settings of the display screen or the buttons in the key area. The cable of each AD converter is electrically connected to the signal wiring terminal through the cable protection cover. The signal wiring terminal is equipped with at least two signal acquisition circuit interfaces. The signal wiring terminal can be equipped with five signal acquisition circuit interfaces, including DC current interface, DC voltage interface, thermocouple interface, two-wire thermal resistor and three-wire thermal resistor, which are used to collect data information such as current, voltage, thermal resistor, and thermocouple.

[0029] like Figure 2As shown, the communication module also includes a Profibus-DP communication unit (a first communication module and a second communication module); the Profinet chip is connected to the MCU unit, the 12th pin of the Profinet chip U3 is connected to the 87th pin of the MCU unit, the 13th pin of the Profinet chip U3 is connected to the 69th pin of the MCU unit, and the 14th pin of the Profinet chip U3 is connected to the 70th pin of the MCU unit. The multi-channel multi-communication protocol intelligent data collector is provided with a wiring board, and a communication wiring terminal is installed on the top of the wiring board. The communication wiring terminal includes four communication interfaces, and the communication module also includes a first communication module and a second communication module. The first communication interface is electrically connected to the first communication module, and the second communication interface is electrically connected to the second communication module. The first communication interface and the second communication interface are both Profibus-DP communication connectors, and the third communication interface and the fourth communication interface are both electrically connected to the Profibus-DP communication unit. The third communication interface and the fourth communication interface are both RJ45 network ports. The MCU unit encodes and converts the data collected by the AD conversion unit, and converts it into the Profibus-DP communication protocol through the communication chip (first communication module and second communication module) that supports the Profibus-DP protocol. The Profinet chip U3 uses the PN-UART chip to implement the Profinet communication protocol, connects to the Ethernet driver chip, and implements redundant communication ports through the RJ45 network port to ensure the stability of the communication network. It makes communication configuration easier and can easily realize data exchange with the automation control system. The MCU unit is an STM32F103ZET6 microcontroller.

[0030] like Figure 3 As shown, the power management unit includes an AC / DC conversion module, a buck module, a boost module and a voltage stabilizing module. The AC / DC conversion module converts AC power into DC power. The voltage stabilizing module is used to stabilize DC power. The boost module boosts the stabilized DC power to power the sensor connected to the A / D converter. The buck module steps down the stabilized DC power to power the MCU unit, display screen and communication module. In order to overcome the problem that external sensors / instruments need to add additional power supply, the boost module outputs 24V power to directly supply power to the sensors of the 32 acquisition channels.

[0031] like Figure 4As shown, the AC-DC conversion module includes a power transformer U3, a fuse F1, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a diode D6, a diode D7 and a diode D8, wherein the fuse F1 is connected to the first pin of the power transformer U3, the diode D1 is connected between the 12th pin of the power transformer U3 and the power supply VCC1, the diode D2 is connected between the 14th pin of the power transformer U3 and the ground, the diode D3 is connected between the 12th pin of the power transformer U3 and the ground, the diode D4 is connected between the 14th pin of the power transformer U3 and the power supply VCC1, the diode D5 is connected between the 17th pin of the power transformer U3 and the power supply VCC2, the diode D6 is connected between the 17th pin of the power transformer U3 and the ground, the diode D7 is connected between the 19th pin of the power transformer U3 and the ground, and the diode D8 is connected between the 19th pin of the power transformer U3 and the power supply VCC2. Wherein VCC1 is a 5V DC power supply, and VCC2 is a 12V DC power supply.

[0032] like Figure 5 As shown, the boost module includes a boost chip, an inductor L1, a transistor M1, a voltage regulator diode D1 and a resistor R CS , the inductor L1 is connected between the 6th pin of the boost chip and the drain of the transistor M1, the voltage regulator diode D1 is connected between the drain of the transistor M1 and the output terminal, the gate of the transistor M1 is connected to the 8th pin of the boost chip, and the resistor R CS Connected between the source of transistor M1 and ground. Convert 12V DC power to 24V DC power through the boost module to power external sensors / instruments.

[0033] like Figure 6 As shown, the voltage stabilizing module includes capacitor C83, LDO linear voltage regulator U66, capacitor C82 and polar capacitor CT6, capacitor C83 is connected between the second pin of LDO linear voltage regulator U66 and ground, capacitor C82 is connected between the third pin of LDO linear voltage regulator U66 and ground, and polar capacitor CT6 is connected between the third pin of LDO linear voltage regulator U66 and ground. In addition, the step-down module is shown in FIG. Figure 7 , the VCC is stepped down to 3.3V through the step-down module to power the MCU unit, display screen, communication module, and AD conversion unit.

[0034] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-channel multi-communication protocol intelligent data collector, placed in a protective chassis, characterized by: The intelligent data collector includes an MCU unit, a display screen, a communication module, an AD conversion unit and a power management unit. The communication module includes a Profinet chip, the AD conversion unit includes multiple A / D converters, and the interface of each A / D converter is provided with 8 acquisition channels. The power management unit provides the required working power for the MCU unit, the display screen, the communication module and the AD conversion unit; the communication module also includes a Profibus-DP communication unit; the Profinet chip is connected to the MCU unit, the 12th pin of the Profinet chip U3 is connected to the 87th pin of the MCU unit, the 13th pin of the Profinet chip U3 is connected to the 69th pin of the MCU unit, and the 14th pin of the Profinet chip U3 is connected to the 70th pin of the MCU unit.

2. The multi-channel multi-communication protocol intelligent data collector according to claim 1, characterized in that: The power management unit includes an AC / DC conversion module, a buck module, a boost module and a voltage stabilizing module. The AC / DC conversion module converts AC power into DC power. The voltage stabilizing module is used to stabilize DC power. The boost module boosts the stabilized DC power to power the sensor connected to the A / D converter. The buck module steps down the stabilized DC power to power the MCU unit, display screen and communication module.

3. A multi-channel multi-communication protocol intelligent data collector according to claim 2, characterized in that: The AC-DC conversion module includes a power transformer U3, a fuse F1, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a diode D6, a diode D7 and a diode D8, wherein the fuse F1 is connected to the first pin of the power transformer U3, the diode D1 is connected between the 12th pin of the power transformer U3 and the power supply VCC1, the diode D2 is connected between the 14th pin of the power transformer U3 and the ground, the diode D3 is connected between the 12th pin of the power transformer U3 and the ground, the diode D4 is connected between the 14th pin of the power transformer U3 and the power supply VCC1, the diode D5 is connected between the 17th pin of the power transformer U3 and the power supply VCC2, the diode D6 is connected between the 17th pin of the power transformer U3 and the ground, the diode D7 is connected between the 19th pin of the power transformer U3 and the ground, and the diode D8 is connected between the 19th pin of the power transformer U3 and the power supply VCC2.

4. The multi-channel multi-communication protocol intelligent data collector according to claim 3, characterized in that: The boost module includes a boost chip, an inductor L1, a transistor M1, a voltage regulator diode D1 and a resistor R CS , the inductor L1 is connected between the 6th pin of the boost chip and the drain of the transistor M1, the voltage regulator diode D1 is connected between the drain of the transistor M1 and the output terminal, the gate of the transistor M1 is connected to the 8th pin of the boost chip, and the resistor R CS Connected between the source of transistor M1 and ground.

5. The multi-channel multi-communication protocol intelligent data collector according to claim 4, characterized in that: The voltage stabilizing module includes a capacitor C83, an LDO linear voltage regulator U66, a capacitor C82 and a polarity capacitor CT6, wherein the capacitor C83 is connected between the second pin of the LDO linear voltage regulator U66 and the ground, the capacitor C82 is connected between the third pin of the LDO linear voltage regulator U66 and the ground, and the polarity capacitor CT6 is connected between the third pin of the LDO linear voltage regulator U66 and the ground.

6. The multi-channel multi-communication protocol intelligent data collector according to claim 2, characterized in that: The multi-channel multi-communication protocol intelligent data collector is provided with a wiring board, and a communication terminal is installed on the top of the wiring board. The communication terminal includes four communication interfaces. The communication module also includes a first communication module and a second communication module. The first communication interface is electrically connected to the first communication module, and the second communication interface is electrically connected to the second communication module. The first communication interface and the second communication interface are both Profibus-DP communication connectors, and the third communication interface and the fourth communication interface are both electrically connected to the Profibus-DP communication unit. The third communication interface and the fourth communication interface are both RJ45 network ports.

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