CN111741544A - LORA full duplex base station based on GSM communication chip - Google Patents
LORA full duplex base station based on GSM communication chip Download PDFInfo
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- CN111741544A CN111741544A CN202010544585.9A CN202010544585A CN111741544A CN 111741544 A CN111741544 A CN 111741544A CN 202010544585 A CN202010544585 A CN 202010544585A CN 111741544 A CN111741544 A CN 111741544A
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- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000004891 communication Methods 0.000 title claims abstract description 48
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 230000005856 abnormality Effects 0.000 claims abstract description 4
- 238000007726 management method Methods 0.000 claims abstract description 4
- 238000013024 troubleshooting Methods 0.000 claims abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
- H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/04—Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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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
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Abstract
The invention discloses an LORA full duplex base station based on a GSM communication chip, which comprises a main control board and a GSM communication chip, wherein the main control board comprises a GSM communication chip; the chip of the lora, the said lora chip includes the first lora chip and second lora chip; the first lora chip and the second lora chip are in data communication connection with the GSM communication chip through a standard SPI interface; an antenna; a filter; the power management module is used for converting the 12V voltage into 3.3V or 5V voltage so as to provide power for the base station; the storage card is used for storing the equipment configuration parameters, the operation log and the received terminal data; and the debugging serial port is used for tracking and monitoring the running state of the base station and troubleshooting faults and abnormalities. The base station is convenient to install, low in power consumption and safe and stable in data transmission by adopting the LoRa transmission technology; the cost is low, and the receiving of the terminal data and the downlink data by the base station are not influenced mutually.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a LORA full-duplex base station based on a GSM communication chip.
Background
The LoRa is a technology special for radio modulation and demodulation released by the company of liter (Semech), has the characteristics of low power consumption, low cost, low rate, long-distance transmission and the like, is more and more widely applied in the field of internet of things at present, and has more and more obvious tendency of replacing other high-power-consumption wireless products in the past. LoRa wireless technology, with the help of the LoRaWAN agreement that security and stability are all high, constitute small-size network with LoRa terminal class product, gather terminal data encryption packing by the LoRa base station is concentrated, through reliable transport layer protocol (TCP/IP) with data transmission to backend server.
At present, the existing mature lora base stations in the market have the following defects in most parts:
1. the cost is high, and the waste is slightly generated for the area deployment such as a low-distribution lora terminal product or an underground garage.
2. The product size is big, brings the inconvenience for the installation.
3. The probability of losing the uplink data of the terminal or the downlink data of the lora base station is high, that is, the lora base station cannot receive the downlink data or the terminal data at the same time when receiving the terminal data or the downlink data, thereby causing the data loss.
Disclosure of Invention
In order to solve the defects in the related field, the invention provides the LORA full-duplex base station based on the GSM communication chip, and the full-duplex communication of the LORA base station is realized by means of the perfect combination of the GSM communication chip and two groups of LORA radio frequency chips (SX 1278).
The LORA full duplex base station based on the GSM communication chip is realized by the following technical scheme:
a LORA full duplex base station based on GSM communication chip, the said base station includes GSM communication chip, is used for realizing the operator's base station cell location of the said base station;
the chip of the lora, the said lora chip includes the first lora chip and second lora chip; the first lora chip is responsible for downlink data of the base station, and the downlink data comprise operation instructions from the server to the base station or data which are required to be downlink by the base station to the terminal module; the second lora chip is responsible for the base station to receive terminal data; the first lora chip and the second lora chip are in data communication connection with the GSM communication chip through a standard SPI interface;
the antenna is used for improving the coverage range of the base station communication;
the filter is used for connecting the first lora chip and the second lora chip with the antenna, and effectively isolating the receiving of the first lora chip and the sending of the second lora chip;
the power management module is used for converting the 12V voltage into 3.3V or 5V voltage so as to provide power for the base station;
the storage card is used for storing the equipment configuration parameters, the operation log and the received terminal data; the storage card is connected with the GSM communication chip through an SPI (serial peripheral interface);
the debugging serial port is used for tracking and monitoring the running state of the base station and troubleshooting faults and abnormalities;
further, the first lora chip sets a channel range to be 500 MHz-510 MHz; the channel allocation method can be configured in the interval of 500 MHz-510 MHz, each frequency point is spaced by 200KHz, and the same channel can be configured;
the second lora chip sets a channel range to be 470 MHz-480 MHz; can be configured in the interval of 470 MHz-480 MHz, each frequency point is separated by 200KHz, and the same channel can be configured.
Further, the default configuration frequency points of the first lora chip are 8 in total, wherein the default configuration frequency points are 500.1MHz, 500.3MHz, 500.5MHz, 500.7MHz, 500.9MHz, 501.1MHz, 501.3MHz and 501.5 MHz;
and the default configuration frequency points of the second lora chip are 8 in number, namely 470.1MHz, 470.3MHz, 470.5MHz, 470.7MHz, 470.9MHz, 471.1MHz, 471.3MHz and 471.5 MHz.
Further, the base station transmits data to the server, an MQTT protocol is operated on the basis of a GSM bottom driver, and the transmitting and receiving functions of the data to the server are achieved by calling an MQTT function interface in the GSM.
Furthermore, the base station also comprises a display screen, the display screen is connected with the GSM communication chip through a communication serial port, and the display screen is used for displaying a configuration page and data display of the base station.
Further, the base station further comprises an ethernet port, the ethernet port is used for connecting a router, information such as an IP address of the base station is configured in the base station, and data is transmitted to an address and a port of the device where the user server is located through the ethernet.
Furthermore, the base station also comprises a rechargeable lithium battery which is used for emergency power supply of the base station after the external power supply of the base station is disconnected.
Further, the storage card also stores a slave server synchronous terminal device ID and a key, and the base station detects whether the terminal device number exists in the internal database after receiving the network access request of the terminal, and if not, filters the terminal device number, and if so, replies a network access permission data frame to the terminal.
Further, the first and second lora chips are SX1268 rf chips.
Further, the base station supplies power by adopting a 12V POE power supply mode.
Compared with the prior art, the invention has the following beneficial effects:
1) the installation is convenient, and the equipment can be installed in the place with GSM signals without additionally constructing a base station tower or other auxiliary equipment;
2) the LoRa transmission technology is adopted, so that the power consumption is low, and the transmission data is safe and stable;
3) the cost is low, and the method is very suitable for areas with few distributed LoRa terminals and the like;
4) the base station receives the terminal data and the downlink data without mutual influence, thereby reducing the probability of losing the uplink data of the terminal or the downlink data of the lora base station.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic diagram of a connection between a base station and a server and a terminal according to the present invention;
FIG. 2 is a schematic diagram of a base station according to the present invention;
FIG. 3 is a schematic diagram of a connection relationship between base stations according to the present invention;
FIG. 4 is a schematic structural diagram of a base station GSM communication chip according to the present invention;
fig. 5 is a diagram illustrating data transmission of a base station according to the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. The construction or operation of the invention not described in detail is well within the skill of the art and the common general knowledge in the art, and should be known to those skilled in the art.
An LORA full duplex base station based on GSM communication chip, the base station comprises
The GSM communication chip is used for realizing the cell positioning of the operator base station of the base station by utilizing the serial number of the operator base station where the GSM communication chip is located and the serial number of the nearby operator base station;
the chip of the lora, the said lora chip includes the first lora chip and second lora chip; the first lora chip is responsible for downlink data of the base station, and operation instructions from the server to the base station or data to be downlink to the terminal module by the base station are realized through the first lora chip; the second lora chip is responsible for the base station to receive terminal data; the first lora chip and the second lora chip are in data communication connection with the GSM communication chip through a standard SPI interface;
the antenna is used for improving the coverage range of the base station communication;
the filter is used for connecting the first lora chip and the second lora chip with the antenna; the first lora chip is connected with the filter, the working range of the filter is 500 MHz-510 MHz, the second lora chip is connected with the working range of the filter, the filter can effectively reduce the interference of the environment to the base station signal, effectively isolate the receiving of the first lora chip and the sending of the second lora chip, avoid the situation of spontaneous receiving and spontaneous receiving, and improve the stability of data transmission;
the power management module is used for converting the 12V voltage into 3.3V or 5V voltage so as to provide power for the base station;
the storage card is used for storing the equipment configuration parameters, the operation log and the received terminal data; the storage card is connected with the GSM communication chip through an SPI (serial peripheral interface); the terminal equipment number and the secret key which are synchronized by the base station from the server can be stored on the memory card as backups, and the backup data on the memory card is called to restore the database when the internal database is abnormal; after receiving a network access request of a terminal, the base station detects whether the terminal equipment number exists in an internal database, if not, the terminal equipment number is filtered, and if so, a network access permission data frame is replied to the terminal; after receiving the network access permission, the terminal can send data; after receiving the data of the terminal, the base station searches a secret key stored in an internal database by using the ID, decodes the data into a plaintext by using the secret key, stores the data into a local database, packages a data packet according to a data protocol rule and transmits the data packet to the terminal equipment according to a data frame needing to be replied, and automatically executes a data interaction task with the terminal; the running log of the base station can be stored in the memory card, so that abnormal data analysis and base station state monitoring are facilitated. The configuration information of the base station can also be stored in the memory card in the form of a configuration table, and the configuration table information can be used for recovering when the base station runs abnormally;
the debugging serial port is used for tracking and monitoring the running state of the base station and troubleshooting faults and abnormalities; the base station can also be connected through a debugging serial port to carry out operations such as local upgrade and parameter configuration of the base station;
further, the first lora chip sets a channel range to be 500 MHz-510 MHz; the channel allocation method can be configured in the interval of 500 MHz-510 MHz, each frequency point is spaced by 200KHz, and the same channel can be configured;
the second lora chip sets a channel range to be 470 MHz-480 MHz; can be configured in the interval of 470 MHz-480 MHz, each frequency point is separated by 200KHz, and the same channel can be configured.
Further, the default configuration frequency points of the first lora chip are 8 in total, wherein the default configuration frequency points are 500.1MHz, 500.3MHz, 500.5MHz, 500.7MHz, 500.9MHz, 501.1MHz, 501.3MHz and 501.5 MHz;
and the default configuration frequency points of the second lora chip are 8 in number, namely 470.1MHz, 470.3MHz, 470.5MHz, 470.7MHz, 470.9MHz, 471.1MHz, 471.3MHz and 471.5 MHz.
Furthermore, a GSM program runs in the base station, the SIM card identification and automatic network searching and network residing functions are carried out, the SIM card of a mobile, Unicom and telecom operator is supported, the voice and video functions are not supported, and only the data service is supported. The application program of the base station runs on the program of the GSM and calls the bottom layer driver of the GSM to realize the data receiving and sending function; and the base station transmits data to the server, an MQTT protocol is operated on the basis of a GSM bottom layer driver, and the transmitting and receiving functions of the data to the server are achieved by calling an MQTT function interface in the GSM.
Furthermore, the base station also comprises a display screen, the display screen is connected with the GSM communication chip through a communication serial port, and the display screen is used for displaying a configuration page and data display of the base station. The frequency band and speed of the base station, and parameters such as data push address and log output path need to be set through the page of the base station.
Further, the base station further comprises an ethernet port, the ethernet port is used for connecting a router, information such as an IP address of the base station is configured in the base station, and data is transmitted to an address and a port of the device where the user server is located through the ethernet.
Furthermore, the base station also comprises a rechargeable lithium battery which is used for emergency power supply of the base station after the external power supply of the base station is disconnected, the designed service life is 24 hours, and when external power supply exists, the charging module in the GSM main control system can charge the lithium battery. When the external power supply is switched to the internal battery power supply, the base station sends power-off alarm data to the background server; when the voltage of the internal battery is lower than 3.7V, the base station sends internal low-power alarm data to the background server; when the voltage of the internal battery is lower than 3.55V, the base station sends low-power shutdown alarm data to a background server; when the base station is powered on, the server finishes sending login request data after the base station is powered on, so that the server can monitor the power supply condition of the base station in real time.
The base station is directly connected with the application server of the user, and directly pushes the application data to the application server of the user without passing through a transfer server, so that the data transmission efficiency is high.
Further, the first and second lora chips are SX1268 rf chips.
Further, the base station supplies power by adopting a 12V POE power supply mode.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so they have no technical significance, and any structural modification, ratio relationship change or size adjustment should fall within the scope of the present invention without affecting the function and the achievable purpose of the present invention.
Claims (10)
1. A LORA full duplex base station based on GSM communication chip is characterized in that the base station comprises
The GSM communication chip is used for realizing the cell positioning of the operator base station of the base station;
the chip of the lora, the said lora chip includes the first lora chip and second lora chip; the first lora chip is responsible for downlink data of the base station, and the downlink data comprise operation instructions from the server to the base station or data which are required to be downlink by the base station to the terminal module; the second lora chip is responsible for the base station to receive terminal data; the first lora chip and the second lora chip are in data communication connection with the GSM communication chip through a standard SPI interface;
the antenna is used for improving the coverage range of the base station communication;
the filter is used for connecting the first lora chip and the second lora chip with the antenna, and effectively isolating the receiving of the first lora chip and the sending of the second lora chip;
the power management module is used for converting the 12V voltage into 3.3V or 5V voltage so as to provide power for the base station;
the storage card is used for storing the equipment configuration parameters, the operation log and the received terminal data; the storage card is connected with the GSM communication chip through an SPI (serial peripheral interface);
and the debugging serial port is used for tracking and monitoring the running state of the base station and troubleshooting faults and abnormalities.
2. The LORA full-duplex base station based on GSM communication chips as claimed in claim 1, wherein said first LORA chip sets the channel range to 500 MHz-510 MHz; the channel allocation method can be configured in the interval of 500 MHz-510 MHz, each frequency point is spaced by 200KHz, and the same channel can be configured;
the second lora chip sets a channel range to be 470 MHz-480 MHz; can be configured in the interval of 470 MHz-480 MHz, each frequency point is separated by 200KHz, and the same channel can be configured.
3. The LORA full-duplex base station based on the GSM communication chip as claimed in claim 2, wherein the default configuration frequency points of the first LORA chip are 8 in total, namely 500.1MHz, 500.3MHz, 500.5MHz, 500.7MHz, 500.9MHz, 501.1MHz, 501.3MHz and 501.5 MHz;
and the default configuration frequency points of the second lora chip are 8 in number, namely 470.1MHz, 470.3MHz, 470.5MHz, 470.7MHz, 470.9MHz, 471.1MHz, 471.3MHz and 471.5 MHz.
4. The LORA full-duplex base station based on GSM communication chip of claim 1, wherein the base station transmits data to the server, runs MQTT protocol based on GSM bottom driver, and achieves the function of transmitting and receiving data to the server by calling MQTT function interface in GSM.
5. The LORA full-duplex base station based on the GSM communication chip as claimed in claim 1, wherein the base station further comprises a display screen, the display screen is connected with the GSM communication chip through a communication serial port, and the display screen is used for displaying configuration pages and data display of the base station.
6. The LORA full-duplex base station based on GSM communication chip of claim 1, wherein the base station further comprises an Ethernet port, the Ethernet port is used for connecting a router, the base station is configured with information such as IP address of the base station inside the base station, and the data is transmitted to the device address and port where the user server is located through Ethernet.
7. The LORA full-duplex base station based on GSM communication chip of claim 1, wherein said base station further comprises a rechargeable lithium battery for emergency power supply of the base station after the external power supply of the base station is disconnected.
8. The LORA full-duplex base station based on the GSM communication chip as claimed in claim 1, wherein the storage card further stores the ID and the key of the synchronous terminal device from the server, and the base station detects whether the terminal device number exists in the internal database after receiving the network access request of the terminal, and if not, the base station filters the terminal device number, and if so, the base station replies a network access permission data frame to the terminal.
9. The LORA full-duplex base station based on the GSM communication chip as claimed in claim 1, wherein the first and second LORA chips are both SX1268 RF chips.
10. The LORA full-duplex base station based on GSM communication chip of claim 1, wherein the base station is powered by 12V POE power supply.
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| CN202010544585.9A CN111741544A (en) | 2020-06-15 | 2020-06-15 | LORA full duplex base station based on GSM communication chip |
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