CN110958580A - Low-power-consumption multifunctional data convergence gateway and data convergence transmission method thereof - Google Patents
Low-power-consumption multifunctional data convergence gateway and data convergence transmission method thereof Download PDFInfo
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- CN110958580A CN110958580A CN201911265762.3A CN201911265762A CN110958580A CN 110958580 A CN110958580 A CN 110958580A CN 201911265762 A CN201911265762 A CN 201911265762A CN 110958580 A CN110958580 A CN 110958580A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a low-power-consumption multifunctional data convergence gateway and a data convergence transmission method thereof, wherein the data convergence gateway comprises a central management unit, a power supply management unit, a communication unit and an antenna with a power amplifier; the central management unit controls the working state of the communication unit to be switched on or switched off through the power management unit; the communication unit is used for sending the data gathered by the central management unit to the communication unit and then transmitting the data to the platform, and meanwhile, an instruction issued by the platform can also be transmitted to the central management unit through the communication unit so as to manage peripheral nodes; the antenna is connected with the peripheral nodes and used for gathering the data acquired by the antenna; the power supply battery supplies power for the central management unit and the power management unit. The invention can realize long-term stable and effective data acquisition in various environments.
Description
Technical Field
The invention relates to the technical field of data aggregation, in particular to a low-power-consumption data aggregation gateway and a data aggregation transmission method thereof.
Background
With the development of the communication industry, technical means and methods for data aggregation and transmission are enriched. However, the traditional private line is expensive, and the coverage of the public internet is poor under complex extreme environments (extremely cold, high temperature and high humidity), so that the current data cannot be met, and particularly, the long-term automatic convergence and long-distance transmission of valuable data cannot be realized.
The invention patent application CN106357527A discloses a low power consumption embedded cloud gateway, which uses an ARM embedded SoC chip to realize low power consumption and high efficiency, configures a large capacity hard disk to realize large capacity storage, and realizes fast distribution of gigabit ethernet ports. However, the low power consumption of the gateway is established on the selected components, so that the gateway still has great defects in reducing the power consumption and cannot accept data with poor signal quality.
Chinese patent application CN106230645A discloses a low power consumption wireless communication method for a monitoring node and a convergence gateway, in which the monitoring node continuously learns and improves a node radio frequency unit wake-up dormancy control strategy according to security assessment and energy consumption assessment results to reduce the time of radio frequency unit activity. However, the method is complex in calculation and not beneficial to practical application.
Therefore, a low-power consumption data convergence gateway is needed to overcome the above problems, and a low-power consumption operation strategy that can be practically applied under various network coverage (especially, poor network coverage) conditions is needed.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a low-power-consumption data aggregation and data aggregation transmission method thereof, which can meet various network coverage conditions (especially poor network coverage), can operate independently for a long time and realize automatic data aggregation and low-power-consumption data transmission and aggregation.
The technical scheme of the invention is as follows:
a data transmission method of a data convergence gateway is suitable for a network composed of the data convergence gateway, a data platform and a plurality of data acquisition nodes, and comprises the following steps:
1) receiving and storing data of each data acquisition node;
2) according to a set period, regularly outputting a first signal to a controllable switching power supply so that the controllable switching power supply supplies power to the communication unit; the setting period is set according to the number of the data acquisition nodes;
3) uploading the aggregated data to the data platform via the communication unit;
4) and after the uploading of the converged data is finished, outputting a second signal to the controllable switch power supply so that the controllable switch power supply can power off the communication unit.
Further, the converged data is received via an antenna of the data convergence gateway.
Furthermore, after the converged data is received by an antenna, the converged data is stored in Flash of the data convergence gateway through an amplifying circuit.
Further, the first signal is a GPIO port outputting a high level, and the second signal is a GPIO port outputting a low level.
Further, the step of the calculation method for setting the period includes:
1) counting the number m of the acquisition nodes and the number n of data generated and sent by the acquisition nodes per hour;
2) calculating the optimal data packet quantity p when the convergence gateway uploads data and the node data quantity q included by each data packet;
3) calculating a set period
A platform instruction issuing method of a data convergence gateway adopting any one of the above methods comprises the following steps:
1) during the starting period of the communication unit, platform instructions of the data platform are received and stored, and the platform instructions are transmitted to the central management unit through the communication unit for execution;
2) after the transmission of the converged data and the transmission of the platform instruction are finished, outputting a second signal to the controllable switch power supply so that the controllable switch power supply can cut off the power of the communication unit;
3) and transmitting the platform instruction in the central management unit to each data acquisition node.
A low-power consumption multifunctional data convergence gateway, which forms a network with a data platform and a plurality of data acquisition nodes, comprises:
the central management unit is used for storing the data collected by each data collection node received by the antenna unit and the data platform issuing instruction received by the communication unit and sending a first signal or a second signal to the battery management unit; the period of the first signal sent out by the central management unit is determined by the number of the data acquisition nodes.
The battery management unit is used for supplying power to the central management unit and the antenna unit, receiving a first signal and a second signal sent by the central management unit, supplying power to the communication unit according to the first signal and powering off the communication unit according to the second signal;
the communication unit is used for sending the converged data of the central management unit to the data platform and sending the received sending instruction of the data platform to the central management unit;
and the antenna unit is used for sending the aggregated data of each data node to the central management unit and sending the issuing instruction in the central management unit to each data node.
Furthermore, the battery management unit comprises a switching power supply module and a controllable switching power supply module.
Further, the communication unit comprises a GPRS module, a WIFI module, an NBIOT module and a SIM card module.
Further, the antenna unit includes an antenna and an amplifying circuit.
Compared with the prior art, the invention has the following advantages:
the data aggregation gateway provided by the invention can automatically aggregate, store and transmit data; meanwhile, the gateway can issue instructions to peripheral nodes to realize remote monitoring. In order to facilitate the implementation of practical application scenes and the long-term independent operation, the invention uses an integral low-power-consumption operation method.
Drawings
FIG. 1 is a block diagram of the components of the present invention.
FIG. 2 is a flow chart of the low power operation of the system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention discloses a low-power-consumption multifunctional data convergence gateway, which is characterized by comprising a central management unit, a power supply management unit, a communication unit and an antenna with a power amplifier; wherein the content of the first and second substances,
the central management unit is connected with the power management unit through a power supply battery and controls the working state of the communication unit to be switched on or switched off through the power management unit;
the communication unit is connected with the central management unit and is used for sending the data gathered by the central management unit to the communication unit and further transmitting the data to a platform; meanwhile, the instruction issued by the platform can be transmitted to the central management unit through the communication unit, so as to manage the peripheral nodes;
the central management unit is connected with the antenna and used for gathering data collected by peripheral nodes;
the power supply battery is connected with the central management unit and the power management unit and used for supplying power to the central management unit and the power management unit.
Furthermore, the central management unit comprises a GPIO interface, when data are gathered and uploaded, the central management unit outputs high level to the controllable switch power supply module of the power supply management module by controlling the GPIO interface, and then the controllable switch power supply module supplies power to the communication unit to conduct data gathering and uploading.
Furthermore, the central management unit further includes a UART for connecting the communication unit and interacting the data collected, uploaded and transmitted by the communication unit through the UART.
Furthermore, the data of the surrounding nodes are gathered through the antenna with the power amplifier, and the instructions are sent to the surrounding nodes.
Furthermore, the communication unit comprises a GPRS module, a WIFI module, an NBIOT module and a SIM card module, supports multiple communication modes and is suitable for multiple occasions.
The invention discloses a method for gathering data and uploading the data to a platform by a low-power-consumption multifunctional data gathering gateway, which comprises the following steps: 1) data uploaded by surrounding nodes are sent to a central management unit of the convergence gateway through an antenna with a power amplifier and stored in Flash; 2) when the aggregated data is uploaded to the platform, the central management unit controls the controllable switch power supply of the power supply management unit to supply power to the communication unit and uploads the data to the platform; 3) and after uploading, the central management unit controls the controllable switch power supply of the power supply management unit to close the working state of the communication unit, and uploading is stopped.
The invention discloses a method for issuing a low-power-consumption multifunctional data convergence gateway sink instruction, which comprises the following steps: 1) the platform issues the instruction to the central management unit through the communication unit; 2) when the central management unit receives the instruction, the instruction is transmitted to the surrounding nodes through the antenna with the power amplifier.
Furthermore, the central control unit adopts an ultra-low power consumption chip which comprises a core chip Cortex-M4F and peripheral RAM (64KB), FLASH (256KB), DC-DC buck regulator/LDO, ADC, GPIO, UART, 2.4GHz radio multi-protocol and balun.
Further, the communication unit comprises: the GPRS module, the WIFI module, the NBIOT module and the SIM card support various transmission modes of 2G, 3G, 4G and 5G, WiFi.
The process of the invention is described in detail below in an example:
the core of the invention is to find that the communication unit is a main power consumption device of the data convergence gateway. Therefore, in order to ensure that the data convergence gateway continuously operates independently in the environment for a long time, it is a prerequisite to reduce the power consumption of the data convergence gateway. In this embodiment, the communication unit uploads data at intervals according to the number of broadcast packets of the receiving node.
A low-power consumption multifunctional data convergence gateway and a data convergence transmission method thereof are disclosed, wherein the gateway comprises a central management unit, a power management unit, a communication unit and an antenna with a power amplifier; the central management unit controls the working state of the communication unit to be switched on or switched off through the power management unit; the communication unit is used for transmitting the data gathered by the central management unit to the platform through the communication unit, and simultaneously, an instruction issued by the platform can be transmitted to the central management unit through the communication unit, and then the instruction is transmitted to surrounding nodes through the antenna so as to manage the surrounding nodes; the antenna is connected with the peripheral nodes in a Bluetooth mode and used for gathering the collected data; the power management unit supplies power to the central management unit, the communication unit and the antenna with the power amplifier.
The central control unit adopts an ultra-low power consumption chip which comprises a core chip Cortex-M4F, and peripheral RAM (64KB), FLASH (256KB), DC-DC buck regulator/LDO, ADC, GPIO, UART, 2.4GHz radio multi-protocol and balun.
The communication unit includes: the GPRS module, the WIFI module, the NBIOT module and the SIM card support various transmission modes of 2G, 3G, 4G and 5G, WiFi.
In one embodiment, nodes around the data aggregation gateway send broadcast packets to the outside every 2s, a central management unit of the data aggregation gateway receives the broadcast packets sent by the surrounding nodes every 300s through a 2.4GHz radio multi-protocol, the working current of the central management unit is 5mA, and the duration of the central management unit is 20 s; the gateway is provided with a separate Power Amplifier (PA) connected with an antenna and can receive broadcast packets with the distance of 500 m.
When the converged data is uploaded, the central management unit outputs high level through controlling the GPIO port and controls the controllable switch power supply module to supply power to the communication unit; the data uploading process comprises the following steps that firstly, a communication unit uploads data scanned and stored in Flash to a platform through a UART (universal asynchronous receiver/transmitter) communication protocol; meanwhile, if the platform issues an instruction for uploading data in a certain time period, the communication unit transmits the instruction to the central control unit to execute the instruction through a UART communication protocol; then the central management unit reads the voltage value of the power supply battery through ADC (analog-to-digital conversion); the method comprises the steps of outputting a low level by controlling a GPIO port, closing a controllable switch power supply module, starting a power saving mode, and reducing the power consumption of a main power consumption device communication unit of a station data convergence gateway; this is a complete data aggregation uploading (issuing) process.
Furthermore, the communication module has a plurality of transmission modes, and the gateway is mainly applied to the environment, so a 2G network is generally adopted for transmission, the duration of the whole process is 10min, and the working current of the sampling process is about 50 mA; when WiFi is adopted, the duration time of the whole process is 1min, and the working current of the sampling process is about 80 mA; the power consumption of the system is greatly reduced, and the standby time of the system is prolonged.
Further, according to the number of surrounding nodes, the opening periods of the gateway communication units are inconsistent. By combining the discharge characteristic curve of the battery and the power consumption of the convergence gateway during data transmission, the optimal number p of pieces of data uploaded by each connection platform of the convergence gateway is 220 through test calculation. If the number of the data uploaded by the platform is too many, the energy consumption of the communication unit is increased; if the number of pieces of data uploaded by the platform is too small, the communication unit needs to be frequently started, which also results in an increase in energy consumption. In this embodiment, the number q of node data included in each piece of data is 6, and the node data uploaded by the communication unit at one time is 220X6 — 1320. In this embodiment, the number n of data generated by each node per hour is 2, and if the number m of nodes covered by the system is 200, the DTU connects to the platform periodically
And (4) hours. To ensure the stability and reliability of the system, the program sets the DTU to connect the platform at least 4 h. And if the number of the covered nodes is large or the sampling frequency of the nodes is high, dynamically setting according to the actual data quantity. Thus, when the data stored by the memory cell is close to the optimum number p of piecesThe connection is started immediately for data transmission, so that the overall energy consumption of the gateway is minimized.
In one embodiment, according to the real-time performance and practical application requirements of data, when the number of surrounding nodes is set to be 1-20, the uploading is started every 4 hours; when the number of the peripheral nodes is 20-50, the uploading is started every 2 hours; and when the number of the peripheral nodes is 50-100, the uploading is started every 1 hour. When the number of the surrounding nodes is more than 100, the system is started every half hour.
The low power consumption operation flow chart of the system is shown in fig. 2, firstly, Clock, GPIO, Bluetooth protocol stack and broadcast are initialized, the broadcast starts, a 1s timer is enabled, the timing time is up, and a time counter is increased by one; when the scanning time reaches integral multiple of Scan-Period, opening the Scan, scanning data, and writing the obtained data into a flash for storage; when the time of the communication module reaches the integral multiple of Weakup-Period (the awakening Period is consistent with the starting Period of the communication unit), the power supply unit of the communication module is started, the communication module is initialized, and the platform is connected through the MQTT protocol; after the connection is successful, reporting attributes such as voltage, GPS (global positioning system), Time To Live (TTL) and the like of the data convergence gateway; obtaining a Unix timestamp through a Network Time Protocol (NTP) request, and receiving a service function (whether access is needed) of the platform; if the data needs to be fetched, searching the nodes needing to be connected, initiating connection, sending a data fetching instruction to the nodes after the connection is successful, storing fs data returned by the nodes in a gateway FLASH in an event form, and actively disconnecting the Bluetooth connection with the nodes by the gateway after the data is uploaded to the platform; and if the data do not need to be fetched, uploading the Scan data and the data stored in the flash to the platform directly in an event form. And finally, the gateway finishes the connection with the platform, the central management unit controls the GPIO port to output a low level to the battery management unit, and the communication module is powered off. The longer the period of the gateway communication unit is opened, the longer the low-power-consumption operation time of the terminal is. Taking the GPRS module as an example, the average power consumption working current of the low-power consumption GPRS module is 50mA, and the minimum working current of other GPRS modules is 100 mA.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and a person skilled in the art can modify the technical solution of the present invention or substitute the same without departing from the spirit and scope of the present invention, and the scope of the present invention should be determined by the claims.
Claims (10)
1. A data transmission method of a data convergence gateway is suitable for a network composed of the data convergence gateway, a data platform and a plurality of data acquisition nodes, and comprises the following steps:
1) receiving and storing data of each data acquisition node;
2) according to a set period, regularly outputting a first signal to a controllable switching power supply so that the controllable switching power supply supplies power to the communication unit; the setting period is set according to the number of the data acquisition nodes;
3) uploading the aggregated data to the data platform via the communication unit;
4) and after the uploading of the converged data is finished, outputting a second signal to the controllable switch power supply so that the controllable switch power supply can power off the communication unit.
2. The method of claim 1, wherein the aggregated data is received via an antenna of the data aggregation gateway.
3. The method of claim 1, wherein the converged data is received by an antenna and stored in Flash of the data convergence gateway via an amplification circuit.
4. The method of claim 1, wherein the first signal is a GPIO port output high level and the second signal is a GPIO port output low level.
5. The method of claim 1, wherein the set period calculation method comprises:
1) counting the number m of the acquisition nodes and the number n of data sampled by the acquisition nodes per hour;
2) calculating the optimal data packet quantity p and the node data quantity q in each data packet when the convergence gateway uploads data;
3) calculating a set period
6. A platform instruction issuing method using the data convergence gateway of any one of the methods of claims 1 to 5, characterized by comprising the steps of:
1) during the starting period of the communication unit, platform instructions of the data platform are received and stored, and the platform instructions are transmitted to the central management unit through the communication unit for execution;
2) after the transmission of the converged data and the transmission of the platform instruction are finished, outputting a second signal to the controllable switch power supply so that the controllable switch power supply can cut off the power of the communication unit;
3) and transmitting the platform instruction in the central management unit to each data acquisition node.
7. A low-power consumption multifunctional data convergence gateway, which forms a network with a data platform and a plurality of data acquisition nodes, comprises:
the central management unit is used for storing the data collected by each data collection node received by the antenna unit and the data platform issuing instruction received by the communication unit and sending a first signal or a second signal to the battery management unit; the period of the first signal sent out by the central management unit is determined by the number of the data acquisition nodes.
The battery management unit is used for supplying power to the central management unit and the antenna unit, receiving a first signal and a second signal sent by the central management unit, supplying power to the communication unit according to the first signal and powering off the communication unit according to the second signal;
the communication unit is used for sending the converged data of the central management unit to the data platform and sending the received sending instruction of the data platform to the central management unit;
and the antenna unit is used for sending the aggregated data of each data node to the central management unit and sending the issuing instruction in the central management unit to each data node.
8. The multifunctional data convergence gateway of claim 7, wherein the battery management unit comprises a switching power supply module and a controllable switching power supply module.
9. The multi-functional data convergence gateway of claim 7, wherein the communication unit comprises a GPRS module, a WIFI module, an NBIOT module, and a SIM card module.
10. The multi-functional data convergence gateway of claim 7 wherein the antenna unit comprises an antenna and an amplification circuit.
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| CN111757522A (en) * | 2020-05-28 | 2020-10-09 | 上海诺行信息技术有限公司 | NB-IoT-based data management method and device |
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