CN210075230U

CN210075230U - RTU system

Info

Publication number: CN210075230U
Application number: CN201921493045.1U
Authority: CN
Inventors: 郑禧
Original assignee: FUZHOU HEDA ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: FUZHOU HEDA ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-02-14
Anticipated expiration: 2029-09-09

Abstract

The utility model discloses an RTU system, which comprises an MCU module, an interface module, an NB-IoT wireless communication module, a Bluetooth module and a power module; the power supply module is connected with the interface module, the MCU module, the NB-IoT wireless communication module and the Bluetooth module and is used for supplying power to the interface module, the MCU module, the NB-IoT wireless communication module and the Bluetooth module; the NB-IoT wireless communication module and the Bluetooth module are connected to the MCU module; the NB-IoT wireless communication module is used for remote communication connection, the Bluetooth module is used for short-range communication connection, and the MCU module is used for switching the remote communication of the NB-IoT wireless communication module into the short-range communication of the Bluetooth module. The utility model discloses can improve stability and can reduce the consumption again.

Description

RTU system

Technical Field

The utility model relates to a remote terminal control field, concretely relates to RTU system.

Background

The RTU is called a remote terminal control system in Chinese and is responsible for monitoring and controlling field signals and industrial equipment. The RTU is a key device in a remote measurement and control system, bears important tasks of data acquisition, processing, storage and forwarding, and plays a role in the link of uploading and issuing.

Because the RTU has the characteristics of wide monitoring point distribution and severe working environment, a plurality of working environments are not easy to wire so as to cause no commercial power supply, and only a storage battery can be adopted for supplying power. The traditional RTU has higher communication flexibility due to the adoption of a 2G/4G/NB-IoT wireless communication technology, but has the defect of high power consumption, so that the storage battery needs frequent maintenance, and the cost of remote monitoring is further increased.

Chinese patent document CN109785603A discloses a micro-power consumption RTU system, which divides a power module into a power input unit, a 2G/4G power supply unit, an NB-IoT power supply unit and an MCU power supply unit, so as to realize independent power supply of the high-power consumption 2G/4G power supply unit and independent power supply of the low-power consumption NB-IoT power supply unit and the MCU power supply unit, thereby reducing the overall power consumption of the RTU system. The wireless communication module comprises an NB-IoT communication unit and a 2G/4G communication unit;

however, the micro-power consumption RTU system still uses a high-power consumption 2G/4G wireless communication unit, so that the overall power consumption is still high.

SUMMERY OF THE UTILITY MODEL

The inventor further analyzes and finds that the NB-IoT communication unit is a remote communication module, has 2G/4G wireless communication functions, and the 2G/4G wireless communication unit has high power consumption, so that the NB-IoT communication unit can still realize all functions without using the 2G/4G wireless communication unit, but the energy consumption is greatly reduced.

The inventors continued to analyze that NB-IoT communication units are more stable over long distances, but not over short distances. Thus, improvements can still be made for stability considerations, leading to the present invention.

Therefore, an object of the utility model is to provide an RTU system that can improve stability and can reduce the consumption again.

The adopted technical scheme is as follows:

an RTU system comprises an MCU module, an interface module, an NB-IoT wireless communication module, a Bluetooth module and a power supply module; the power supply module is connected with the interface module, the MCU module, the NB-IoT wireless communication module and the Bluetooth module and is used for supplying power to the interface module, the MCU module, the NB-IoT wireless communication module and the Bluetooth module; the NB-IoT wireless communication module and the Bluetooth module are connected to the MCU module; the NB-IoT wireless communication module is used for remote communication connection, the Bluetooth module is used for short-range communication connection, and the MCU module is used for switching the remote communication of the NB-IoT wireless communication module into the short-range communication of the Bluetooth module.

Further, the interface module comprises an RS485 interface, an RS232 interface, a DALI interface, a LIN interface and a CAN interface, and the RS485 interface, the RS232 interface, the DALI interface, the LIN interface and the CAN interface are connected to the MCU module.

Further, the interface module further comprises an I2C interface and a UART interface, and the I2C interface and the UART interface are connected to the MCU module.

The beneficial effects of the utility model reside in that:

on one hand, the NB-IoT wireless communication module is directly adopted, and a 2G/4G wireless communication unit is not used, so that the power consumption is greatly reduced compared with the scheme of CN109785603A, and the whole wireless communication function can be realized.

On the other hand, because the Bluetooth module is adopted, the long-range communication of the NB-IoT wireless communication module is switched into the short-range communication of the Bluetooth module through the MCU module, thereby greatly improving the stability of the short-range communication.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an RTU system.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only preferred embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, an RTU system includes an MCU module 10, an interface module 20, an NB-IoT wireless communication module 30, a bluetooth module 40, and a power module 50; the power module 50 is connected to the interface module 20, the MCU module 10, the NB-IoT wireless communication module 30, and the bluetooth module 40, and configured to supply power to the interface module 20, the MCU module 10, the NB-IoT wireless communication module 30, and the bluetooth module 40; the NB-IoT wireless communication module 30 and the Bluetooth module 40 are connected to the MCU module; the NB-IoT wireless communication module 30 is used for long-range communication connection, the bluetooth module 40 is used for short-range communication connection, and the MCU module 10 is used to switch long-range communication of the NB-IoT wireless communication module 30 to short-range communication of the bluetooth module 40.

The interface module 20 is provided with different types of interfaces as required, for example, an RS485 interface, an RS232 interface, a DALI interface, a LIN interface, and a CAN interface, and the RS485 interface, the RS232 interface, the DALI interface, the LIN interface, and the CAN interface are connected to the MCU module. Or the interface module further comprises an I2C interface and a UART interface, and the I2C interface and the UART interface are connected to the MCU module.

The RS485 interface, RS232 interface, DALI interface, LIN interface, CAN interface, I2C interface and UART interface CAN all adopt existing modules, these interfaces are mature technologies, and those skilled in the art CAN set up addition as required, or CAN find out corresponding interface to apply in the prior art or on the market. The interfaces CAN support protocols such as RS485, RS232, DALI, LIN, CAN and the like, and CAN be quickly adapted to various complex application occasions. The RS485 interface can be externally connected with relevant equipment or sensors of the RS485 bus through the RS485 bus, such as a water quality sensor, a radar sensing terminal and the like; the DALI interface can support the latest DIIADALI2.0 protocol, so that building illumination control and automatic control of part of intelligent home are realized; the LIN interface can realize the control of a distributed electronic system in an automobile and acquire the information of related equipment through NB-IoT wireless communication; the CAN interface is used for docking and controlling vehicle systems and acquiring information of relevant vehicle-mounted systems through NB-IoT wireless communication. The I2C interface can realize the connection and control of various general sensors, adopts Master & Slave structure, adopts single bus can connect dozens or even hundreds of sensors, and is simple and easy-to-use. The UART interface may enable bi-directional communication, as well as full duplex transmission and reception, and may be used for asynchronous communication.

The MCU module 10 includes but is not limited to STM32G4 series single chip microcomputer adopting mixed signal application, and the NB-IoT wireless communication module 30 includes but is not limited to BC95NB-IoT wireless communication module adopting Wolff. In the implementation, the NB-IoT communication unit capable of implementing the function is selected from the prior art, and is not limited to any model, which is available to those skilled in the art without creative efforts.

The transmission distance of the Bluetooth module is shorter: at present, the main working range of the Bluetooth module can work within a range of 100 meters, so that the working quality and efficiency of the Bluetooth during propagation can be ensured, and the propagation speed of the Bluetooth is improved. In addition, the Bluetooth module can also effectively reduce the interference between the RTU system and other electronic equipment, thereby ensuring the normal operation of the Bluetooth module. The Bluetooth module not only has higher transmission quality and efficiency, but also has higher transmission safety.

The overall operation of the RTU system is generally as follows:

the MCU module is used for performing remote data acquisition by connecting the remote terminal group and the NB-IoT wireless communication module, and then switching to Bluetooth communication for short-distance transmission, so that remote monitoring on the remote terminal such as industrial equipment is finally realized. In the opposite process, the RTU system can also convert the data sent from the central computer into commands to control remote terminals such as industrial equipment.

The MCU module is used for switching the remote communication of the NB-IoT wireless communication module into the short-range communication of the Bluetooth module, so that the short-range communication can be changed into the Bluetooth communication by the Bluetooth module, and the signal transmission is stable and quick. And only the NB-IoT wireless communication module is used for wireless remote communication, and a 2G/4G wireless communication unit is not used, so that the power consumption is greatly reduced compared with the scheme of CN109785603A, and all wireless communication functions can be realized.

The above detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.

Claims

1. An RTU system is characterized by comprising an MCU module, an interface module, an NB-IoT wireless communication module, a Bluetooth module and a power supply module; the power supply module is connected with the interface module, the MCU module, the NB-IoT wireless communication module and the Bluetooth module and is used for supplying power to the interface module, the MCU module, the NB-IoT wireless communication module and the Bluetooth module; the NB-IoT wireless communication module and the Bluetooth module are connected to the MCU module; the NB-IoT wireless communication module is used for remote communication connection, the Bluetooth module is used for short-range communication connection, and the MCU module is used for switching the remote communication of the NB-IoT wireless communication module into the short-range communication of the Bluetooth module.

2. The RTU system of claim 1, wherein the interface module comprises an RS485 interface, an RS232 interface, a DALI interface, a LIN interface, and a CAN interface, the RS485 interface, the RS232 interface, the DALI interface, the LIN interface, and the CAN interface being connected to the MCU module.

3. The RTU system of claim 2, wherein the interface module further comprises an I2C interface and a UART interface, the I2C interface and the UART interface being connected to the MCU module.