WO2018161545A1

WO2018161545A1 - Device integrating multiple communication modes

Info

Publication number: WO2018161545A1
Application number: PCT/CN2017/103897
Authority: WO
Inventors: 臧志斌; 林大朋; 史兵; 陆欣; 何业慎; 孙丽莉
Original assignee: 深圳市国电科技通信有限公司
Priority date: 2017-03-10
Filing date: 2017-09-28
Publication date: 2018-09-13
Also published as: CN106960558A; CN106960558B

Abstract

A device integrating multiple communication modes. The device comprises: a dual-mode communication module, an M-bus, an RS-485 bus, an LED indicator unit, a data storage unit, a real-time clock unit, and a central processing unit. The central processing unit employs a Cortex-M3 core processing chip to handle data processing and storage of the entire device. An 8M hertz external clock is employed to form a minimum CPU system having serial communication interfaces, such as UART, SPI, and IIC. The present invention enables transmission, receiving, and conversion of data from different gauges and meters, and realizes peripheral device control by means of conventional IO interfaces.

Description

Device combining multiple communication modes

Cross-reference to related applications

The present application is based on a Chinese patent application filed on Jan. 10, 2017, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to a communication device, and more particularly to a device that combines multiple communication methods.

Background technique

There are already the following shortcomings in each communication device:

1. The existing communication devices have a single communication method and are demanding on site, which cannot meet the diversified application requirements. Especially in the old residential quarters, the information collection points are intricate and complex, and the single technology application faces great challenges;

2. The existing communication device networking has little flexibility. Once the construction is completed, it is difficult to add and expand. There is a signal blind zone, which cannot meet the requirements of full coverage.

3. The existing communication device lacks the M_BUS bus interface, and cannot supply and communicate with the passive meter such as wired water and gas heat, and cannot realize the integrated multi-table collection of the electric water, gas and heat meter;

4. The existing communication devices are scattered on the spot, and the electric water and gas heat meters are collected separately for administration, repeated construction, high construction cost and difficult maintenance;

5. The existing communication devices are individually networked and self-contained, and user information sharing cannot be realized, forming information barriers.

Summary of the invention

The embodiments of the present invention are intended to provide an apparatus for merging multiple communication modes that meets the current user diversity metering collection requirements, to solve one or more of the above prior art problems.

The technical solution of the embodiment of the present invention is implemented as follows:

In order to solve the above problem, an embodiment of the present invention provides an apparatus for combining multiple communication modes, where the apparatus includes:

a dual mode communication module configured to support at least broadband carrier communication network communication and micro power wireless communication network communication;

M-BUS bus, the M-BUS bus is a half-duplex communication bus, and the M-BUS bus is responsible for providing power to the slave station while data is being transmitted;

RS-485 bus, the RS-485 bus is a serial communication line;

An infrared communication unit, wherein the infrared communication unit communicates by using a communication method of transmitting information by infrared rays;

An LED indicating unit configured to display an operating state of the device, including an operation, an alarm, an uplink transceiver, and a downlink transceiver status;

a data storage unit, the data storage unit is mainly configured to store meter parameter configuration information and table data freezing;

a real-time clock unit configured to clock the device to maintain system clock consistency;

Central processing unit, the central processing unit is responsible for the entire device data processing and storage, using 8M external clock to form the minimum CPU system, with a variety of serial communication interfaces, to achieve different meter data transmission and reception, conversion, through conventional input / output (IO The Input/Output interface implements various peripheral controls.

As an implementation manner, the above dual mode communication module includes a broadband carrier communication unit and a micro power wireless communication unit.

As an implementation manner, the dual mode communication module is composed of a broadband carrier communication unit and a micro power wireless communication unit; wherein the broadband carrier communication unit is a broadband power line carrier communication unit.

As an implementation manner, the central processing unit is responsible for data processing and storage of the entire device by adopting a Cortex-M3 core processing chip, and adopts an 8M external clock to form a minimum CPU system, and at least has a universal asynchronous transceiver (UART, Universal Asynchronous). Serial communication interfaces such as Receiver/Transmitter), Serial Peripheral Interface (SPI), and Inter-Integrated Circuit (IIC).

As an implementation manner, the M-BUS bus adopts a master-slave mode in communication, and a signal transmitted by the master station to the slave station is represented by a change in a voltage value, and a signal transmitted from the station to the master station adopts a change in current value. It means that the connection of each node on the M-BUS bus is not positive or negative, and there is no polarity requirement.

As an implementation manner, the device is configured with two M-BUS bus master ports and one slave port, which can realize real-time conversion of slave data to the master data; the M-BUS bus master side adopts the first wake-up The method of delaying power-off after delay communication and communication success.

As an implementation manner, the M-BUS bus master station provides communication of 22V or more and 2 mA for all slave stations on the M-BUS bus while communicating with the remote slave station, and the slave station reads the meter data and data. Transfer use.

As an implementation manner, the RS485 bus uses a differential signal for data transmission; the device has a RS485 bus interface, and the RS485 bus interface works in an uplink communication mode by default, so that the meter reading can be performed when the meter station is accessed. Data forwarding, RS-485 to Digital Integrated Circuit (TTL, Transistor-Transistor-Logic) serial port tool can send upgrade command to enter upgrade mode, send parameter setting command can set corresponding parameters, send function switching command can switch to downlink meter reading function .

As an implementation manner, the device adopts a power line broadband carrier, an M-BUS bus slave end, and an infrared communication manner, and a downlink uses a micro power wireless, an M-BUS bus master end, and an RS485 total. Line mode, the data from top-down and bottom-up transmission process to resolve conflicts in multiple upstream channel meter reading.

As an embodiment, the data storage unit is further configured to store daily freeze meter data, monthly freeze meter data, and meter alarm events.

The beneficial effects of the technical solution described in the embodiments of the present invention are:

The device can simultaneously collect data of meters, water meters, gas meters, heat meters and the like, realize multi-table integrated collection function, eliminate data barriers and realize information sharing;

The device combines various communication modes such as broadband power line, micro power wireless, M-BUS bus, RS-485 bus and infrared communication. The field application has small constraints, large selection space, flexible networking mode, and great construction and debugging. Convenience;

The device can supply power to the M-BUS meter. The meter can be powered completely from the bus or powered by the bus and the battery. It solves the power consumption problem of the passive meter, prolongs the battery life and reduces the maintenance cost of the meter. ;

The dual-mode communication module of the device can form a point-to-multipoint star network with the water and gas heat meter micro-power sub-module, and the water-gas heat meter micro-power sub-module does not participate in the networking, and adopts a method of periodically opening a window to listen to the air signal. Communicate with the dual-mode communication module to minimize the communication energy consumption of the passive meter and extend the service life of the meter;

The device integrates the water gas meter company with the data collection business of the power grid enterprise, avoids redundant construction, reduces the inconvenience caused by the construction, and greatly improves the feasibility of the automatic data collection business promotion;

The promotion and use of this device has changed the situation of the traditional electric water gas heat meter company, promoted the development of integration, and took the information sharing road to provide technical support for the construction of an all-round energy efficiency management platform.

DRAWINGS

FIG. 1 is a hardware block diagram of a device for combining multiple communication modes according to an embodiment of the present invention;

2 is a wake-up diagram of a M-BUS bus master port according to an embodiment of the present invention;

3 is a code flow diagram of an M-BUS bus according to an embodiment of the present invention;

4 is a schematic diagram of an implementation of an M-BUS bus according to an embodiment of the present invention;

FIG. 5 is a functional diagram of an apparatus for combining multiple communication modes according to an embodiment of the present invention.

detailed description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment of the invention provides a device for combining multiple communication modes. As shown in FIG. 1 , the device is mainly composed of the following modules;

1) Dual-mode communication module: The device has a dual-mode communication module, and the dual-mode communication module is configured to support at least broadband carrier communication network communication and micro-power wireless communication network communication; for example, the module includes a broadband carrier communication unit and micro a power wireless communication unit, the broadband carrier communication unit adopts an Orthogonal Frequency Division Multiplexing (OFDM) physical layer broadband communication technology optimized for a low-voltage power distribution power line network, and the working frequency ranges from 2 to 12.5 MHz, and the physical The layer communication rate is greater than 10 MHz; the micro power wireless communication unit adopts a professional metering frequency band of 470 MHz to 510 MHz, and a Gaussian frequency shift keying (GFSK) modulation mode, the transmission power is less than 50 mW, and the communication rate is 10 Kbps, which can effectively meet the requirements. Various technical requirements of short-range wireless communication; optionally, the broadband carrier communication unit is a broadband power line carrier communication unit; the dual-mode communication module is respectively compatible with a local broadband carrier communication network and a local micro-power wireless communication network, and overcomes Existing single broadband carrier communication in power The transmission line quality is poor success rate is not high, and a single micro-power wireless communication disadvantages space requirements for more information collection case, poor quality in the power module with the environment It is set as a micro-power wireless communication mode, and is configured as a broadband carrier communication mode when there is a large amount of closed space in the environment, which greatly improves the data transmission success rate; in addition, the micro-power wireless communication unit is also connected with the surrounding low-power wireless water and gas heat meter. It is a point-to-multipoint star network, collecting low-power wireless water and gas heat meter data, reducing the power consumption of low-power meter and extending the service life of the meter; and distinguishing from the existing communication method: the dual-mode communication module takes broadband The advantages of carrier communication and micro-power wireless communication can be configured according to the field; in addition, the micro-power wireless communication unit communicates with the low-power wireless meter as a new function.

2) M-BUS bus: M-BUS bus is a half-duplex communication bus. The bus is responsible for supplying power to the slave station while data is being transmitted. It is also called power bus. The master-slave mode is used for communication. The signal transmitted by the station is represented by the change of the voltage value. The signal transmitted from the station to the primary station is represented by the change of the current value. The connection of each node on the bus is not positive or negative, and there is no polarity requirement, which can effectively solve the problem of water and gas heat. The meter can not take power; the device is equipped with 2 M-BUS bus master port and 1 slave port, which can realize real-time conversion of slave data to master data; for existing M-BUS bus master The short-time wake-up communication has low success rate and high power consumption for a long time. The M-BUS bus master station adopts the first wake-up delay communication and the communication is delayed after power-off, in the slave M-BUS bus. When the station port encrypts the data, first power on the bus for 1.5s, then send the read data frame. After the M-BUS meter returns successfully, delay 40s and then power off. If there is next frame reading data in 40s, it will not be performed. Power-on wake-up operation, direct meter reading, loop until All M-BUS meter readings are delayed after 40s power-off. This wake-up method not only solves the problem of high power consumption of the M-BUS bus master station, but also effectively avoids the failure of the first wake-up meter reading. Of course, it should be noted that 1.5s and 40s are only reference values, and the setting and adjustment of these reference values can be performed according to actual conditions.

The M-BUS bus circuit, the data bits transmitted on the M-BUS bus are defined as follows: (1) The signal transmitted by the primary station to the secondary station is represented by a change in the voltage value, that is, the data stream transmitted by the primary station to the secondary station is A sequence of voltage pulses with a logic 1 of +36V and a logic of 0 with +24V. In At steady state, the line will remain in the logic 1 state, and the upper half of Figure 3 shows the data stream diagram transmitted by the primary station to the terminal slave. (2) The signal transmitted from the station to the primary station is represented by the change of the current value, that is, the data stream sent by the slave station to the primary station is a current pulse sequence, which is usually represented by a current value of 1.5 mA when transmitting At 0 o'clock, the current value is increased by 11 to 20 mA by the slave control. The lower half of Figure 3 shows a code stream diagram of the data transmitted by the slave station to the primary station.

For the M-BUS bus transmission principle, the device uses a new M-BUS high-power transceiver circuit. When transmitting, the high-voltage operational amplifier modulates the voltage output. When receiving, the op amp is in the comparison input mode, and the sampling slave transmits the circuit. The operational amplifier can realize different levels of load; the M-BUS bus schematic can be seen in Figure 4.

The wake-up process of the M-BUS bus is shown in Figure 2. The wake-up process and the wake-up procedure of the existing device have at least the following differences: the existing device rarely uses the M-BUS bus interface, and basically does not have the M-BUS bus master at the same time. The equipment of the station interface and the slave interface; at the same time, the current M-BUS bus host interface basically adopts the continuous power supply mode, and the power consumption of the device is high, and the energy waste is serious.

3) RS485 bus: RS-485 bus is a common serial communication line, which uses differential signals for data transmission. It has many access nodes, long transmission distance and strong anti-interference ability. The device has 1 RS485 bus. Compared with the single meter reading of the existing equipment, the interface combines functions such as meter reading, data forwarding, parameter setting and software upgrade, which greatly improves the applicability and maintainability of the device. The interface works in the uplink communication mode by default. When the metering station is connected, the meter reading data can be forwarded. The RS-485 to TTL serial port tool can be used to send the upgrade command to enter the upgrade mode. The parameter setting command can be used to set the corresponding parameters and send the function switching command. It can be switched to the downstream meter reading function to make the bus performance fully utilized.

4) Infrared communication: Infrared communication is a communication method that uses infrared to transmit information. The infrared wavelength range is 0.70 μm to 1 mm, and the carrier frequency is 38 KHz.

5) LED indicating unit: The LED indicating unit is mainly configured to display the working state of the device, including operation, alarm, uplink transceiver, and downlink transceiver status. Here, the LED indicating unit can It is an LED (Light-Emitting Diode) indicator.

6) Data storage unit: The data storage unit is mainly configured to store the meter parameter configuration information and the meter data freeze.

7) Real-time clock unit: The real-time clock unit is configured to clock the device to maintain system clock consistency. .

8) Central processing unit: The central processing unit adopts Cortex-M3 core processing chip, which is responsible for data processing and storage of the whole device. It adopts 8M external clock to form the minimum CPU system, and has serial communication interfaces such as UART, SPI, IIC, etc. The meter data is transceived and converted, and various peripheral controls are realized through a conventional IO interface, which is a core part of the device.

FIG. 5 is a functional diagram of a device for combining multiple communication modes according to an embodiment of the present invention. As shown in FIG. 5, the device that combines multiple communication modes has at least electric meter collection, water meter collection, gas meter collection, and heat meter collection. , protocol conversion, data transmission, data storage, message forwarding and other functions, the device works as follows:

1) Meter collection: The device can realize the meter collecting function through micro power wireless or RS485 bus mode. The communication protocol is compatible with DLT645 protocol _2007 version and 1997 version. The reading data type includes current real-time data, alarm data and historical freeze data.

2) Water meter collection: Water meter collection can be realized by micro power wireless, M-BUS bus master station or RS485 bus. The communication protocol has CJ/T188-2004 "Technical Conditions for Data Transmission of Household Meters", DLT645 Protocol _2007 Edition and 1997 The version and each manufacturer's own agreement, the data type of the reading includes the current cumulative flow and the cumulative flow on the settlement date.

3) Gas meter collection: The gas meter collection is mainly realized by using the built-in water-gas heat meter micro-power sub-module. The module detects the airborne wireless signal through periodic cyclic window opening, and decides whether to process according to the received data. The communication protocol is mainly CJ/T188-2004 "Technical Conditions for Data Transmission of Household Meters", the data type of the copy includes the current cumulative flow and the cumulative flow on the settlement date.

4) Heat meter collection: The heat meter collection is mainly realized by M-BUS bus master station mode, communication gauge The main data is CJ/T188-2004 "Technical Conditions for Data Transmission of Household Meters". The data types for the collection include the current cumulative flow and the cumulative flow at the settlement date.

5) Protocol conversion: The protocol converter can adapt to a variety of meter specifications, convert the meter reading message of the upper concentrator into a meter reading table that can be identified by the meter, and then copy the meter after successful meter reading. The message replied by the meter is converted into a concentrator protocol message for reply.

6) Data transmission: The device adopts power line broadband carrier, M-BUS bus slave and infrared communication mode, and has micro power wireless, M-BUS bus master and RS485 bus mode to realize data top-down and bottom-down. The above transmission process can solve the conflicts in the multi-channel channel meter reading.

7) Data storage: The device stores meter data including daily freeze data, monthly freeze data, and alarm events.

8) Message forwarding: The device can transparently forward the message of the electric water and gas heat meter according to the requirements of the concentrator, and switch the meter according to the appropriate baud rate of the uplink message.

9) Remote power supply: When the M-BUS bus master communicates with the remote slave station, it provides 22V or more and 2mA power supply for all slave stations on the bus, which is used by the slave station to read meter data and data transmission.

The device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.

The units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; You can choose some of them according to your actual needs. Or all of the units to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; The unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The foregoing description of the specific exemplary embodiments of the present invention has The description is not intended to limit the invention to the precise forms disclosed. The embodiments were chosen and described in order to explain the particular embodiments of the invention Choose and change. The scope of the invention is intended to be defined by the claims and their equivalents.

The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without deliberate labor.

The above is only a preferred mode of the present invention, and it should be noted that various similar modifications and improvements can be made by those skilled in the art without departing from the inventive concept. Within the scope of protection of the present invention.

Industrial applicability

The device for merging multiple communication modes according to the embodiment of the invention can simultaneously collect data of meters, water meters, gas meters, heat meters and the like, realize multi-table integrated collection function, eliminate data barriers, and realize Information sharing; a combination of broadband power lines, micro-power wireless, M-BUS bus, RS-485 bus and infrared communication and other communication methods, field application constraints are small, choose the room Large, flexible networking, bringing great convenience to construction and commissioning.

Claims

A device that combines multiple communication methods, the device comprising:

a dual mode communication module configured to support at least broadband carrier communication network communication and micro power wireless communication network communication;

M-BUS bus, the M-BUS bus is a half-duplex communication bus, and the M-BUS bus is responsible for providing power to the slave station while data is being transmitted;

RS-485 bus, the RS-485 bus is a serial communication line;

An infrared communication unit configured to communicate by using a communication method of transmitting information by infrared rays;

An LED indicating unit configured to display an operating state of the device, including an operation, an alarm, an uplink transceiver, and a downlink transceiver status;

a data storage unit, the data storage unit configured to at least store meter parameter configuration information and freeze meter data;

a real-time clock unit configured to clock the device to maintain system clock consistency;

The central processing unit is responsible for data processing and storage of the entire device, has a plurality of serial communication interfaces, implements data transmission and reception and conversion of different meter data, and implements various peripheral control through a conventional IO interface.
The apparatus according to claim 1, wherein the dual mode communication module comprises a wideband carrier communication unit and a micro power wireless communication unit.
The apparatus of claim 2, wherein the broadband carrier communication unit is a broadband power line carrier communication unit.
The apparatus for merging multiple communication modes according to claim 1, wherein the central processing unit is responsible for data processing and storage of the entire device by using a Cortex-M3 core processing chip, and the minimum CPU system is composed of an 8M external clock. , at least with UART, SPI, IIC serial communication interface.
The apparatus for merging a plurality of communication modes according to claim 1, wherein the M-BUS bus adopts a master-slave mode in communication, and the signal transmitted by the master station to the slave station is represented by a change in a voltage value, The signal transmitted by the station to the primary station is represented by a change in the current value, and the connections of the nodes on the M-BUS bus are not positive or negative, and no polarity is required.
A device for merging a plurality of communication modes according to claim 5, wherein said device is configured with two M-BUS bus master ports and one slave port, which can implement slave data to master data. Real-time conversion; the M-BUS bus master station adopts the first wake-up delay communication and the method of delaying power-off after successful communication.
The apparatus for merging a plurality of communication modes according to claim 5, wherein said M-BUS bus master station provides 22V or more for all slave stations on the M-BUS bus while communicating with the remote slave station, 2mA power supply for slaves to read meter data and data transmission.
The device of claim 1, wherein the RS485 bus uses differential signals for data transmission; the device has a RS485 bus interface, and the RS485 bus interface operates in uplink communication by default. Mode, so that the meter reading data can be forwarded when the metering station is connected, and the RS-485 to TTL serial port tool can send the upgrade command to enter the upgrade mode, the parameter setting command can set the corresponding parameter, and the sending function switching command can be switched to the downlink copy. Table function.
The device for merging multiple communication modes according to claim 1, wherein the device adopts a power line broadband carrier, an M-BUS bus slave end and an infrared communication mode, and a downlink micro power wireless and an M-BUS bus master. The terminal and the RS485 bus mode realize the data top-down and bottom-up transmission process to solve the conflicts in the multi-channel channel meter reading.
The apparatus according to claim 1, wherein the data storage unit is further configured to store daily freeze meter data, monthly freeze meter data, and meter alarm events.