CN111077839A - Multi-interface intelligent Internet of things data gateway - Google Patents
Multi-interface intelligent Internet of things data gateway Download PDFInfo
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- CN111077839A CN111077839A CN202010055628.7A CN202010055628A CN111077839A CN 111077839 A CN111077839 A CN 111077839A CN 202010055628 A CN202010055628 A CN 202010055628A CN 111077839 A CN111077839 A CN 111077839A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Abstract
The invention discloses a multi-interface intelligent Internet of things data gateway, which can be divided into a power supply module, a main control chip, a sensor interface module, a communication module, a single-chip microcomputer data preprocessing module and a display interface module.
Description
Technical Field
The invention relates to the technical field of data gateway equipment, in particular to a multi-interface intelligent Internet of things data gateway.
Background
The data gateway is a gathering point for connecting various sensor data, and is also an intermediate node device between the sensor and the monitoring center platform. In the industrial monitoring scene with dense sensors, in order to reduce communication lines, sensor data is usually connected to a data gateway in a wired or wireless manner, and then is connected to a monitoring center platform through a public network or a private network, so that the data gateway is also an effective device for sharing a transmission line and improving the line utilization rate.
From the current state of the industry, multi-source heterogeneity of sensor data will be a long-standing problem in the future. In an application scenario equipped with a plurality of different types of sensors, differences exist in industry standards, data formats and transmission protocols. A sensor manufacturer can provide a transmitter suitable for the sensor, a large amount of sensor data of different types are transmitted to a remote monitoring center through transmitters with single interfaces, and if a wired mode is adopted, a transmission cable which cannot be shared can increase the cost of a user and is inconvenient to install and overhaul; if the wireless mode is adopted, the interference among a plurality of wireless transmission lines is caused.
Therefore, a multi-interface intelligent communication device data gateway is needed, which can be compatible with various sensors with different transmission standards, different data formats and interfaces, thoroughly shield the difference of the bottom sensors at the output end of the data gateway, solve the problem of multi-source isomerism in the data acquisition process, and meet the data acquisition and transmission requirements in a complex environment.
Disclosure of Invention
The invention aims to provide a multi-interface intelligent Internet of things data gateway to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a multi-interface intelligence thing networking data gateway, the main part is the casing, and the inside intelligence thing networking data gateway board that is provided with of casing, be provided with power module, main control chip, communication module, singlechip data acquisition preprocessing module, display interface module, sensor interface module on the intelligence thing networking data gateway board, still be provided with work pilot lamp, the button that resets, USB interface and antenna on the intelligence thing networking data gateway board.
Preferably, the power module is a 24V power supply, circuits for converting 24V into 4.6V, converting 24V into 3.3V and converting 24V into 5V are arranged in the power module, and the power module supplies power for the main control board, the single chip microcomputer and the USB interface respectively.
Preferably, the main control chip adopts a mainboard based on an embedded ARM processor.
Preferably, the communication module comprises a wired transmission module and a wireless transmission module;
the wired transmission module comprises one or more of an Ethernet card chip, a network controller and an RJ45 connector;
the Ethernet card chip is connected with the network controller and the RJ45 interface;
the wireless transmission module comprises a 4G module, an NB-IoT module, a LoRa module, a ZigBee module and a WiFi module;
the 4G module comprises a Me909s-821 module and a SIM card circuit matched with the module, the NB-IoT module comprises an NB73 module and peripheral circuits thereof, the LoRa module comprises an RFM98 chip and peripheral circuits thereof, the ZigBee module comprises a Z150PA chip and peripheral circuits thereof, and the WiFi module comprises an AP6212 chip and peripheral circuits thereof.
Preferably, the single chip microcomputer data acquisition preprocessing module adopts an STM32F103C single chip microcomputer chip as a core and is provided with a TL431 voltage-stabilizing chip peripheral circuit.
Preferably, the display interface module is an HDMI interface and its peripheral circuits.
Preferably, the sensor interface module is an input end of a current, a voltage, an RS232 signal, an RS485 differential signal and a peripheral circuit thereof.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention breaks the sensor information island phenomenon, provides multi-interface access, improves the system compatibility of the data network management of the Internet of things, and can meet the access requirements of most sensors on the market. The invention can be competent for functions of data monitoring, remote control and the like in complex environment, provides an efficient solution for managing various devices, and solves the problem that the prior art can not bear the strength of data of multiple interfaces and multiple types of sensors.
(2) The invention designs a small-sized symmetric array antenna loaded sensitively, which can be accessed to sensors with different transmission standards, different data formats and interfaces, solves the problem of multi-source isomerism in the data acquisition process, and thoroughly shields the difference of bottom sensors; in the transmission process from the data gateway to the monitoring center platform, various wired and wireless transmission modes are provided at the same time, and the data acquisition and transmission requirements under the complex environment are met.
(3) Aiming at a wired input interface commonly adopted by the current mainstream industrial sensor, four access circuits of a 4-20 mA current sensor signal, a 0-5V voltage signal, an RS232 signal and an RS485 differential signal are designed, and a unified communication frame format structure is formulated at a single chip microcomputer part, so that the multi-source heterogeneous problem of sensor node data is solved, and the complex Internet of things environment is dealt with.
(4) Aiming at the connection mode between the current mainstream gateway and the monitoring center platform, a wired transmission mode including an RJ45 network port, a wireless transmission mode including a 4G module, an LoRa module, an NB-IoT module, a ZigBee module, a WiFi module and the like are designed so as to adapt to the data return requirements in different scenes.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a multi-interface intelligence thing networking data gateway, the main part is the casing, the inside intelligence thing networking data gateway board that is provided with of casing, be provided with power module on the intelligence thing networking data gateway board, main control chip, communication module, singlechip data acquisition preprocessing module, show interface module, sensor interface module, still be provided with the work pilot lamp on the intelligence thing networking data gateway board, the button resets, USB interface and antenna, power module includes the 24V power supply, the system button that resets, the system pilot lamp that works. The reset button can directly enable the core board to be restarted, and when the gateway card machine is encountered, the button can be used for resetting the system. The work indicator light is designed to enable a user to observe the working state of the gateway more intuitively.
The power supply module provides working voltage for the whole intelligent Internet of things data gateway board; the main control chip is responsible for carrying out data communication with the front-end cloud platform and the rear-end cloud platform of the sensor and controlling each submodule of the whole data gateway board; the communication module provides wired transmission and wireless transmission modes and is mainly responsible for functions of data and command uploading and issuing and the like of the data gateway of the intelligent Internet of things; the single chip microcomputer data acquisition preprocessing module is responsible for preceding-stage processing of sensor data and formulating a communication frame format structure; the display interface module is mainly used for HDMI display and is used for debugging the gateway; and the sensor interface module is mainly responsible for accessing four types of sensor signals into the gateway.
The utility model provides a design and realization of many interfaces intelligent communication equipment data gateway, at first according to the demand on the market, designs the interface type of this gateway, includes the most common 4~20mA analog current signal in instrument and meter, and voltage sensor signal, RS232 signal, RS485 difference signal are as signal input. The STM32 single chip microcomputer is selected as a core of data acquisition, an embedded ARM processor carrying a Linux operating system is used as a core board, and the whole data gateway is composed of the two parts. The problems of single interface and multi-source data isomerism of the traditional data gateway are solved.
The sensor interface module is used for designing a corresponding operational amplifier circuit for voltage and current signals aiming at possible micro signals, and the amplification factor can be adjusted according to the resistance in the operational amplifier circuit, so that the system compatibility is improved. The operational amplifier part adopts an LM358 operational amplifier, and can realize the amplification of two paths of signals according to the characteristics of the operational amplifier part. Signals of the current and voltage sensors are preprocessed by a front-stage circuit and then delivered to an STM32 singlechip for next-stage processing. The RS232 and RS485 circuit part is responsible for processing RS232 and RS485 signals, the RS232 and RS485 circuit part comprises SP3232 and SP3485 chips and peripheral circuits thereof, and communication between the intelligent data gateway and the sensors can be realized.
The single chip microcomputer data preprocessing module takes STM32 as a core of data acquisition, and is mainly responsible for data acquisition, processing and sending of the front end of the sensor to the core board, receiving of commands of the core board, issuing of the commands to the front end of the sensor and other functions. The part is externally connected with a 2.5V voltage reference circuit to provide an accurate voltage reference value for an internal A/D conversion module. A communication format is established in a single chip microcomputer, a data frame structure is specified, different data formats are used for distinguishing various commands, and CRC cyclic redundancy check codes are added at the tail of each group of data frames, so that the self-error-correcting capability is realized, and the correctness of communication data is ensured. The communication protocol is established, so that each sensor can conveniently receive commands of the single chip microcomputer, the commands comprise sub-node address changing, transmission baud rate changing and the like, and the management of the front end of the sensor is more convenient and efficient for the single chip microcomputer.
The main control chip is an embedded ARM processor carrying a Linux operating system and comprises various transmission modules. Compared with a Windows operating system, the security of the Linux operating system is higher, and the Linux operating system with higher security level is more suitable for the data gateway of the Internet of things. The main control chip has a size of 2GB RAM and 16GB ROM.
The communication module is used for aiming at the environment where the intelligent Internet of things data gateway can be arranged, and the wireless transmission mode and the wired transmission mode are set in the data transmission link for selection. The device comprises a network card module, an NB-IoT module, a WiFi module, a ZigBee module, a 4G module and an LoRa module.
The display interface is an HDMI interface, so that debugging and maintenance can be directly performed on the core board, and the operation is convenient. The cloud platform displays real-time data of the front-end sensor network, and various functions of the intelligent Internet of things data gateway are completed.
The power module comprises a 24V power supply, a system reset button and a system work indicator light. The reset button can directly enable the core board to be restarted, and when the gateway card machine is encountered, the button can be used for resetting the system. The work indicator light is designed to enable a user to observe the working state of the gateway more intuitively.
Further, the voltage and current sensor interface is of a 4-wire system and respectively comprises power supply, signals +, signals and ground. And the RS232 and RS485 sensor circuit module adopts SP3232 and SP3485 chips to connect the sensor signals of the type into the system. The RS485 circuit adopts a mode of software control direction conversion, and utilizes the matching resistor to increase the communication distance, thereby completing the RS485 half-duplex communication.
Further, the single chip microcomputer adopts STM32F103C, and the working voltage is 3.3V. The method mainly completes the work of receiving signals of the voltage and current sensors, preprocessing sensor data, communicating with a rear-end cloud platform and a front-end sensor network, formulating a frame format structure, receiving LoRa signals and the like. The TL431 is a voltage stabilizing source and has the function of enabling the circuit to obtain more stable voltage, providing stable 2.5V reference voltage for AD in the single chip microcomputer and improving AD precision.
Furthermore, the partial chip of LoRa selects RFM98, the working voltage of which is 3.3V, and cooperates with the antenna interface to perform data transmission.
Preferably, the core board is the core of the whole board, and it has an interface for HDMI display signals, SPI communication, UART communication, I2C communication, corresponding pins of MAC layer, corresponding pins of PHY layer, WiFi signal pins, etc., for a total of 204 pins. Control networking function, various communication protocols, etc.
Further, the 4G module part circuit comprises a SIM card part. The working voltage of the 4G module is 3.3V.
Furthermore, the network card part consists of three parts, namely an RTL8211E network card chip, a network controller and an RJ45 interface.
Further, the NB-IoT module adopts the NB73 module to implement the function of wireless transmission of data.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a multi-interface intelligence thing networking data gateway, the main part is the casing, and the casing is inside to be provided with intelligence thing networking data gateway board, its characterized in that: the intelligent internet of things data gateway board is provided with a power supply module, a main control chip, a communication module, a single chip microcomputer data acquisition preprocessing module, a display interface module and a sensor interface module, and the intelligent internet of things data gateway board is further provided with a work indicator lamp, a reset button, a USB interface and an antenna.
2. The multi-interface intelligent internet of things data gateway of claim 1, wherein: the power module is a 24V power supply, circuits for converting 24V into 4.6V, converting 24V into 3.3V and converting 24V into 5V are arranged in the power module, and the power module supplies power for the main control board, the single chip microcomputer and the USB interface respectively.
3. The multi-interface intelligent internet of things data gateway of claim 1, wherein: the main control chip adopts a mainboard based on an embedded ARM processor.
4. The multi-interface intelligent internet of things data gateway of claim 1, wherein: the communication module comprises a wired transmission module and a wireless transmission module;
the wired transmission module comprises one or more of an Ethernet card chip, a network controller and an RJ45 connector;
the Ethernet card chip is connected with the network controller and the RJ45 interface;
the wireless transmission module comprises a 4G module, an NB-IoT module, a LoRa module, a ZigBee module and a WiFi module;
the 4G module comprises a Me909s-821 module and a SIM card circuit matched with the module, the NB-IoT module comprises an NB73 module and peripheral circuits thereof, the LoRa module comprises an RFM98 chip and peripheral circuits thereof, the ZigBee module comprises a Z150PA chip and peripheral circuits thereof, and the WiFi module comprises an AP6212 chip and peripheral circuits thereof.
5. The multi-interface intelligent internet of things data gateway of claim 1, wherein: the single chip microcomputer data acquisition preprocessing module adopts an STM32F103C single chip microcomputer chip as a core and is provided with a TL431 voltage-stabilizing chip peripheral circuit.
6. The multi-interface intelligent communications device data gateway of claim 1, wherein: the display interface module is an HDMI interface and a peripheral circuit thereof.
7. The multi-interface intelligent internet of things data gateway of claim 1, wherein: the sensor interface module is a current, voltage, RS232 signal, RS485 differential signal input end and a peripheral circuit thereof.
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| CN110601968A (en) * | 2019-08-01 | 2019-12-20 | 西安欧亚学院 | Miniaturized symmetrical array antenna |
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2020
- 2020-01-17 CN CN202010055628.7A patent/CN111077839A/en active Pending
Patent Citations (6)
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| US20150381737A1 (en) * | 2014-06-30 | 2015-12-31 | Davra Networks Limited | Gateway device and a gateway system for an internet-of-things environment |
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Application publication date: 20200428 |
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