CN110572791A - Information transmission system based on LoRa technology - Google Patents
Information transmission system based on LoRa technology Download PDFInfo
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- CN110572791A CN110572791A CN201910821704.8A CN201910821704A CN110572791A CN 110572791 A CN110572791 A CN 110572791A CN 201910821704 A CN201910821704 A CN 201910821704A CN 110572791 A CN110572791 A CN 110572791A
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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
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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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
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
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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 provides an information transmission system based on an LoRa technology, which comprises an acquisition terminal, a data conversion end, a remote server and a user terminal, wherein the acquisition terminal is connected with the data conversion end; the acquisition terminal is used for acquiring data information and transmitting the acquired data information to the data conversion terminal through the first LoRa wireless communication module; the data conversion end is used for receiving the data information transmitted by the acquisition terminal through the second LoRa wireless communication module, converting the data information into the data information suitable for being transmitted by the first wireless communication module, and transmitting the converted data information to the remote server through the first wireless communication module; the remote server is used for receiving the data information transmitted by the data conversion end through the second wireless communication module, and transmitting and displaying the data information to the user terminal through the second wireless communication module; thereby realizing the transmission of data information.
Description
Technical Field
The invention relates to the technical field of information transmission, in particular to an information transmission system based on an LoRa technology.
background
with the acceleration of the construction of the acquisition system, the intelligent acquisition terminal is installed and applied on a large scale, and higher requirements are provided for the information transmission quality and efficiency. At present, for some public network signals, the blind areas or weak areas (such as basement garages and power distribution rooms) are covered, so that data information collected by a collection terminal is difficult to transmit, and the data information collected by the collection terminal cannot be sent to a user terminal.
therefore, an information transmission system based on the LoRa technique is proposed.
Disclosure of Invention
in order to solve the above technical problems, the present invention provides an information transmission system based on the LoRa technology, which is used for implementing information transmission in a signal coverage blind area or a coverage weak area.
The embodiment of the invention provides an information transmission system based on an LoRa technology, which comprises an acquisition terminal, a data conversion end, a remote server and a user terminal; wherein the content of the first and second substances,
the acquisition terminal comprises a first LoRa wireless communication module; the acquisition terminal is used for acquiring data information and transmitting the acquired data information to the data conversion terminal through the first LoRa wireless communication module;
The data conversion end comprises a second LoRa wireless communication module and a first wireless communication module; the data conversion end is used for receiving the data information transmitted by the acquisition terminal through the second LoRa wireless communication module, converting the data information into the data information suitable for being transmitted by the first wireless communication module, and transmitting the converted data information to the remote server through the first wireless communication module;
The remote server comprises a power supply module and a second wireless communication module; the remote server is used for receiving the data information transmitted by the data conversion terminal through the second wireless communication module and transmitting the data information to the user terminal through the second wireless communication module; the power supply module is used for providing electric energy for the remote server;
And the user terminal is used for receiving and displaying the data information transmitted by the remote server.
In one embodiment, the first wireless communication module or the second wireless communication module includes one or more of a 4G communication module, a 5G communication module, and an NB-loT communication module.
in one embodiment, the user terminal is further configured to receive the instruction information input by a user, and transmit the instruction information to the remote server;
The remote server is further configured to receive the instruction information transmitted by the user terminal through the second wireless communication module, and transmit the instruction information to the data conversion terminal through the second wireless communication module; the data conversion end is further configured to receive the instruction information transmitted by the remote server through the first wireless communication module, and transmit the instruction information to the acquisition terminal through the second LoRa wireless communication module;
The user terminal comprises one or more of a smart phone, a personal computer or a palm computer with a communication function.
in one embodiment, the power supply module of the remote server comprises a solar cell unit and a battery pack unit; the solar cell unit is used for receiving solar energy, converting the received solar energy into electric energy and transmitting the electric energy to the battery pack unit for storage; the battery pack unit is used for providing electric energy for the remote server.
in one embodiment, the power supply module of the remote server further includes a power detection unit; the electric quantity detection unit is used for detecting electric quantity information stored in the battery pack unit, comparing the electric quantity information with preset electric quantity threshold information in electric quantity detection, and controlling the solar cell unit to receive solar energy, convert the received solar energy into electric energy and transmit the electric energy to the battery pack unit for storage when the electric quantity information is lower than the preset electric quantity threshold information.
in one embodiment, the system further comprises a monitoring end;
the remote server also comprises a monitoring module; the monitoring module comprises a temperature detection unit, a humidity detection unit, a flame detection unit and a control unit; wherein the content of the first and second substances,
The temperature detection unit is used for detecting the temperature information of the working environment of the battery pack unit and transmitting the temperature information to the control unit; the humidity detection unit is used for detecting humidity information of the working environment of the battery pack unit and transmitting the humidity information to the control unit; the flame detection unit is used for detecting flame information of the working environment of the battery pack unit and transmitting the flame information to the control unit; the control unit is used for transmitting the temperature information, the humidity information and the flame information to a monitoring end of a worker through the second wireless communication module;
And the monitoring end is used for displaying the temperature information, the humidity information and the flame information to workers.
in one embodiment, the monitoring end further comprises a processing module and an alarm module; the processing module is used for judging whether the working environment of the battery pack unit is abnormal or not according to the temperature information, the humidity information and the flame information, and transmitting alarm information to the alarm module to give an alarm when the working environment of the battery pack unit is abnormal; .
The alarm module comprises one or more of an LED lamp alarm, a sound alarm or an audible and visual alarm.
in one embodiment, the remote server further comprises a storage module;
The control unit is also used for transmitting and storing the temperature information, the humidity information and the flame information to the storage module;
The storage module comprises an information identification unit, a temperature information storage unit, a humidity information storage unit and a flame information storage unit; the information identification unit is used for transmitting and storing the temperature information transmitted by the control unit to the temperature information storage unit; the humidity information storage unit is also used for storing the humidity information transmitted by the control unit; the flame information transmitted by the control unit is transmitted to the flame information storage unit for storage;
the temperature information storage unit is used for acquiring first time information when the transmitted temperature information is received and storing the temperature information and the first time information; the humidity information storage unit is used for acquiring second time information when the transmitted humidity information is received, and storing the humidity information and the second time information; the flame information storage unit is used for acquiring third time information when the transmitted flame information is received, and storing the flame information and the third time information;
the monitoring end is also used for receiving an information query instruction sent by the staff and transmitting the information query instruction to the storage module of the remote server; the storage module is used for searching temperature information, humidity information or flame information corresponding to the information query instruction in the temperature information storage unit, the humidity information storage unit and the flame information storage unit according to the information query instruction, and transmitting the acquired temperature information, humidity information or flame information and the corresponding first time information, second time information and third time information to the monitoring end.
in one embodiment, in order to improve the service life, save power consumption, and simultaneously not occupy a data transmission channel, the user terminal is controlled to be activated on time, wherein the specific steps of controlling the user terminal to be activated on time are as follows:
Firstly, obtaining an activation time interval according to the following steps A1-A3;
step A1, obtaining the bandwidth and the spreading factor of the user terminal, and substituting the value into a formula (1) to obtain the transmission duration of the confirmation information in the information transmission system;
wherein Tq is a transmission duration of the acknowledgement information in the information transmission system, M is a length of the acknowledgement information preset in the information transmission system, DG is a spreading factor of the user terminal, NE is a bandwidth of the user terminal, and VT is a coding rate preset in the information transmission system;
step A2, obtaining the transmission duration of the effective information by using a formula (2);
wherein AZ is the byte number of effective information when the system transmits information, J is to judge whether the information transmission system transmits a header when transmitting information, when the header is transmitted, the J is 1, when the header is not transmitted, the J is 0,Rounding the data, and taking 0 when the data is negative;
Step A3, calculating activation time interval using equation (3)
T＝Tq+Td
(3)
Wherein T is an activation interval;
Then, the user terminal activates once every time T, and judges whether the remote server sends out the confirmation information after activation,
The confirmation information is that when the far-end server transmits data to the user side, a piece of confirmation information is sent to the user side firstly so as to be used for searching a corresponding user terminal;
When the remote server searches for the corresponding user terminal through the confirmation information, in order to avoid the situation that the user terminal cannot be found when the user terminal is searched by using the complete peer-to-peer information due to the occurrence of coding error, packet loss and the like in the transmission process of the confirmation information, the user terminal is searched by using a formula (4);
Wherein d isjMatching degree of confirmation information sent by a remote server and a user terminal, q is the number of matched characters of identification information of the user terminal and the confirmation information sent by the remote server, d1 is the number of characters which are contained in the identification information of the user terminal and are commonly contained in the confirmation information, d2 is the number of characters which are contained in the identification information of the user terminal and are commonly contained in the confirmation information, a is a preset standard weight, the preset value is generally 0.1, z is a preset weight coefficient, the preset value is generally 2, and the matching degree d of all the user terminals and the confirmation information is calculatedjthe user terminal with the maximum matching degree value is the searched corresponding user terminal;
And if the corresponding user terminal is not the current user terminal, the user terminal continues to enter the rest mode for waiting time T and then is activated again.
additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
drawings
fig. 1 is a schematic structural diagram of an information transmission system based on the LoRa technology provided in the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
the embodiment of the invention provides an information transmission system based on an LoRa technology, which comprises an acquisition terminal 11, a data conversion end 12, a remote server 13 and a user terminal 14, wherein the acquisition terminal is connected with the data conversion end 12; wherein the content of the first and second substances,
the acquisition terminal 11 comprises a first LoRa wireless communication module 111; the acquisition terminal 11 is configured to acquire data information and transmit the acquired data information to the data conversion terminal 12 through the first LoRa wireless communication module 111;
the data conversion terminal 12 includes a second LoRa wireless communication module 121 and a first wireless communication module 122; the data conversion terminal 12 is configured to receive the data information transmitted by the acquisition terminal 11 through the second LoRa wireless communication module 121, convert the data information into data information suitable for being transmitted by the first wireless communication module 122, and transmit the converted data information to the remote server 13 through the first wireless communication module 122;
A remote server 13 including a power supply module 131 and a second wireless communication module 132; the remote server 13 is configured to receive the data information transmitted by the data conversion terminal 12 through the second wireless communication module 132, and transmit the data information to the user terminal 14 through the second wireless communication module 132; a power supply module 131, configured to provide power for the remote server 13;
and the user terminal 14 is used for receiving and displaying the data information transmitted by the remote server 13.
the working principle of the system is as follows: the acquisition terminal 11 transmits the acquired data information to the data conversion terminal 12 through the first LoRa wireless communication module 111; the data conversion terminal 12 receives the data information transmitted by the acquisition terminal 11 through the second LoRa wireless communication module 121, converts the data information into data information suitable for being transmitted by the first wireless communication module 122, and transmits the converted data information to the remote server 13 through the first wireless communication module 122; the remote server 13 receives the data information transmitted by the data conversion terminal 12 through the second wireless communication module 132, and transmits and displays the data information to the user terminal 14 through the second wireless communication module 132; and through the power supply module 131 of the remote server 13 for providing power to the remote server 13.
the beneficial effect of above-mentioned system lies in: the data information transmitted by the acquisition terminal is received by the user through the user terminal through the acquisition terminal, the data conversion terminal, the remote server and the user terminal; the data information transmitted by the acquisition terminal through the first LoRa wireless communication module is acquired through the second LoRa wireless communication module by the data conversion end in the system, and is transmitted to the remote server through the first wireless communication module, and then the remote server transmits the data information to the user terminal; the system takes the data conversion end and the far-end server as transfer to acquire data information transmitted by the acquisition terminal covering a blind area or a weak area of a network signal, and then transmits the data information to the user terminal to realize the transmission of the data information; the defects that in the prior art, a blind area or a weak area (such as a basement garage and a power distribution room) is covered on a public network signal, so that the data information acquired by the acquisition terminal is difficult to transmit, and the data information acquired by the acquisition terminal cannot reach a user terminal are overcome, and the data information acquired by the acquisition terminal is further transmitted by the system.
In one embodiment, the first wireless communication module or the second wireless communication module includes one or more of a 4G communication module, a 5G communication module, and an NB-loT communication module. In the above technical solution, the functions of the first wireless communication module and the second wireless communication module are realized through multiple communication modes.
In one embodiment, the user terminal is further configured to receive instruction information input by a user, and transmit the instruction information to the remote server;
the remote server is also used for receiving the instruction information transmitted by the user terminal through the second wireless communication module and transmitting the instruction information to the data conversion terminal through the second wireless communication module; the data conversion end is also used for receiving the instruction information transmitted by the remote server through the first wireless communication module and transmitting the instruction information to the acquisition terminal through the second LoRa wireless communication module; according to the technical scheme, the instruction information input by the user is received through the user terminal and is transmitted to the acquisition terminal through the remote server and the data conversion terminal, so that the information transmission from the user terminal to the acquisition terminal is realized.
and the user terminal comprises one or more of a smart phone, a personal computer or a palm computer with a communication function. In the technical scheme, the functions of the user terminal are realized through various devices.
in one embodiment, the power supply module of the remote server comprises a solar cell unit and a battery pack unit; the solar cell unit is used for receiving solar energy, converting the received solar energy into electric energy and transmitting the electric energy to the battery pack unit for storage; and the battery pack unit is used for providing electric energy for the remote server. According to the technical scheme, the solar cell unit receives solar energy and converts the received solar energy into electric energy to be transmitted to the battery pack unit for storage, so that power supply to the remote server is realized through the power supply module.
In one embodiment, the solar panel selected for the power module is a 20W, 6V/24Ah gel lead acid battery, and the overall device volume is about 380mm (length) x 350mm (width) x 180mm (thickness), weight: about 10 kg; the device was operated for 6 days with the battery fully charged.
in one embodiment, the power supply module can select 220V commercial power to supply power to the remote server.
In one embodiment, the LoRa wireless communication module requires 3.3V/300mA for power.
In one embodiment, the power supply module of the remote server further comprises a power detection unit; and the electric quantity detection unit is used for detecting the electric quantity information stored in the battery pack unit, comparing the electric quantity information with preset electric quantity threshold information in the electric quantity detection unit, and controlling the solar cell unit to receive solar energy and convert the received solar energy into electric energy when the electric quantity information is lower than the preset electric quantity threshold information, and transmitting the electric energy to the energy storage module for storage. According to the technical scheme, the electric quantity detection unit detects the electric quantity information stored in the battery pack unit, compares the detected electric quantity information with the preset electric quantity threshold value information, controls the solar cell unit to receive solar energy when the electric quantity information is lower than the preset electric quantity threshold value information, converts the received solar energy into electric energy and transmits the electric energy to the energy storage module for storage, and accordingly achieves the automatic charging function when the electric quantity is insufficient.
in one embodiment, the system further comprises a monitoring end;
the remote server also comprises a monitoring module; the monitoring module comprises a temperature detection unit, a humidity detection unit, a flame detection unit and a control unit; wherein the content of the first and second substances,
the temperature detection unit is used for detecting the temperature information of the working environment of the battery pack unit and transmitting the temperature information to the control unit; the humidity detection unit is used for detecting the humidity information of the working environment of the battery pack unit and transmitting the humidity information to the control unit; the flame detection unit is used for detecting the flame information of the working environment of the battery pack unit and transmitting the flame information to the control unit; the control unit is used for transmitting the temperature information, the humidity information and the flame information to a monitoring end of a worker through the second wireless communication module;
And the monitoring end is used for displaying the temperature information, the humidity information and the flame information to workers. According to the technical scheme, the temperature detection unit, the humidity detection unit and the flame detection unit are used for acquiring the temperature information, the humidity information and the flame information of the working environment of the battery pack unit, and the temperature information, the humidity information and the flame information are transmitted to the monitoring end through the control unit and the second wireless communication module and displayed to the staff, so that the real-time monitoring of the working environment of the battery pack unit by the staff is realized.
In one embodiment, the monitoring end further comprises a processing module and an alarm module; the processing module is used for judging whether the working environment of the battery pack unit is abnormal or not according to the temperature information, the humidity information and the flame information, and transmitting alarm information to the alarm module to give an alarm when the working environment of the battery pack unit is abnormal; according to the technical scheme, the abnormity judgment of the working environment of the battery pack unit is realized according to the temperature information, the humidity information and the flame information transmitted by the remote server through the processing module; and when the abnormity is judged, the alarm module gives an alarm to the staff so that the staff can timely handle the alarm.
And the alarm module comprises one or more of an LED lamp alarm, a sound alarm or an audible and visual alarm. The function of the alarm module is realized through various alarm devices.
in one embodiment, the remote server further comprises a storage module;
the control unit is also used for transmitting and storing the temperature information, the humidity information and the flame information to the storage module;
the storage module comprises an information identification unit, a temperature information storage unit, a humidity information storage unit and a flame information storage unit; the information identification unit is used for transmitting and storing the temperature information transmitted by the control unit to the temperature information storage unit; the humidity information storage unit is used for storing the humidity information transmitted by the control unit; the flame information storage unit is also used for storing the flame information transmitted by the control unit;
The temperature information storage unit is used for acquiring first time information when the transmitted temperature information is received and storing the temperature information and the first time information; the humidity information storage unit is used for acquiring second time information when the transmitted humidity information is received and storing the humidity information and the second time information; the flame information storage unit is used for acquiring third time information when receiving the transmitted flame information and storing the flame information and the third time information;
The monitoring end is also used for receiving an information query instruction sent by a worker and transmitting the information query instruction to a storage module of the remote server; and the storage module is used for searching the temperature information, the humidity information or the flame information corresponding to the information query instruction in the temperature information storage unit, the humidity information storage unit and the flame information storage unit according to the information query instruction, and transmitting the acquired temperature information, humidity information or flame information and the corresponding first time information, second time information and third time information to the monitoring end. In the technical scheme, the storage of the temperature information, the humidity information and the flame information transmitted by the control unit is realized through the storage module of the remote server, and the temperature information, the humidity information and the flame information are respectively stored in the temperature information storage unit, the humidity information storage unit and the flame information storage unit through the information identification unit; and when the remote server receives an information query instruction transmitted by a worker through the monitoring terminal, the storage module searches the temperature information, the humidity information or the flame information corresponding to the information query instruction in the temperature information storage unit, the humidity information storage unit and the flame information storage unit according to the information query instruction, and transmits the acquired temperature information, humidity information or flame information and the corresponding first time information, second time information and third time information to the monitoring terminal and displays the information to the worker, so that the worker queries the temperature information, humidity information or flame information stored in the storage module.
in one embodiment, in order to improve the service life, save power consumption, and simultaneously not occupy a data transmission channel, the user terminal is controlled to be activated on time, wherein the specific steps of controlling the user terminal to be activated on time are as follows:
firstly, obtaining an activation time interval according to the following steps A1-A3;
Step A1, obtaining the bandwidth and the spreading factor of the user terminal, and substituting the value into a formula (1) to obtain the transmission duration of the confirmation information in the information transmission system;
wherein Tq is a transmission duration of the acknowledgement information in the information transmission system, M is a length of the acknowledgement information preset in the information transmission system, DG is a spreading factor of the user terminal, NE is a bandwidth of the user terminal, and VT is a coding rate preset in the information transmission system;
Step A2, obtaining the transmission duration of the effective information by using a formula (2);
Wherein AZ is the byte number of effective information when the system transmits information, J is to judge whether the information transmission system transmits a header when transmitting information, when the header is transmitted, the J is 1, when the header is not transmitted, the J is 0,Rounding the data, and taking 0 when the data is negative;
the byte number of the effective information is the maximum data quantity which can be transmitted when the data information is transmitted by the remote server.
step A3, calculating activation time interval using equation (3)
T＝Tq+Td
(3)
wherein T is an activation interval;
then, the user terminal activates once every time T, and judges whether the remote server sends out the confirmation information after activation,
The confirmation information is that when the far-end server transmits data to the user side, a piece of confirmation information is sent to the user side firstly so as to be used for searching a corresponding user terminal;
when the remote server searches for the corresponding user terminal through the confirmation information, in order to avoid the situation that the user terminal cannot be found when the user terminal is searched by using the complete peer-to-peer information due to the occurrence of coding error, packet loss and the like in the transmission process of the confirmation information, the user terminal is searched by using a formula (4);
Wherein d isjthe matching degree of the confirmation information sent by the remote server and the user terminal, q is the number of matched characters of the identification information of the user terminal and the confirmation information sent by the remote server, and d1 is the number of characters commonly contained in the identification information and the confirmation information of the user terminal contained in the characters of the identification information of the user terminal, d2 is the number of characters commonly contained in the identification information and the confirmation information of the user terminal contained in the characters of the confirmation information, a is a preset standard weight, a is a preset value generally 0.1, z is a preset weight coefficient, a preset value generally 2, and the matching degree d of all the user terminals and the confirmation information is calculatedjthe user terminal with the maximum matching degree value is the searched corresponding user terminal;
The matching number of the identification information of the user terminal and the confirmation information sent by the remote server is the characters appearing in both the identification information of the user terminal and the confirmation information sent by the remote server, and the sequence is the same, for example: when the ' information transmission system based on the LoRa technology ' is confirmation information, and the identifier of a certain user terminal is ' an information transmission platform based on the MoRa technology information ', the identifier and the confirmation information of the user terminal both contain ' information transmission based on/oRa technology ' 14 characters, but because the sequence of the characters ' is completely different between the two, and after the ' characters ' are deleted, the sequence of the rest characters is also completely the same, the matching number q of the identification information of the user terminal and the confirmation information sent by the remote server is 14-1-13 characters;
Meanwhile, d1 is the identifier of the user terminal, "an information transmission platform based on the MoRa technical information" contains the number of "an information transmission based on oRa technology" characters, namely 16 characters "an information transmission based on oRa technical information";
d2 is the confirmation information "an information transmission system based on LoRa technique" contains the number of "an information transmission based on/oRa technique" characters, that is, the characters "an information transmission based on oRa technique" 14 characters;
And if the corresponding user terminal is not the current user terminal, the user terminal continues to enter the rest mode for waiting time T and then is activated again.
the beneficial effects of the technology are as follows:
(1) In the above technology, the user terminal is in a rest state for most of time, and only the time T is used as a time interval to activate the user terminal, so that the user terminal can save a large amount of energy consumption, and simultaneously reduce the working time and improve the service life.
(2) In the process, the confirmation information is sent firstly, and the data information transmitted by the corresponding remote server is sent out after the client corresponding to the confirmation information is found, so that the data information can be accurately transmitted to the corresponding client terminal.
(3) in the process of searching the corresponding client terminal by the confirmation information, the confirmation information does not need to be completely consistent with the identification of the client terminal, but only needs to be matched to the maximum extent, so that the situations of packet loss, coding error and the like in the data transmission process are avoided.
(4) when the matching degree of the user terminal and the client is calculated, the traditional Euclidean distance or the Mahalanobis distance method is not used for calculation, so that the condition that indexes need to be standardized numerical values during calculation is avoided, and meanwhile, a general text matching formula is not used, and a large number of text databases and stop word databases are avoided.
it will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. an information transmission system based on an LoRa technology is characterized by comprising an acquisition terminal, a data conversion terminal, a remote server and a user terminal; wherein the content of the first and second substances,
The acquisition terminal comprises a first LoRa wireless communication module; the acquisition terminal is used for acquiring data information and transmitting the acquired data information to the data conversion terminal through the first LoRa wireless communication module;
The data conversion end comprises a second LoRa wireless communication module and a first wireless communication module; the data conversion end is used for receiving the data information transmitted by the acquisition terminal through the second LoRa wireless communication module, converting the data information into the data information suitable for being transmitted by the first wireless communication module, and transmitting the converted data information to the remote server through the first wireless communication module;
the remote server comprises a power supply module and a second wireless communication module; the remote server is used for receiving the data information transmitted by the data conversion terminal through the second wireless communication module and transmitting the data information to the user terminal through the second wireless communication module; the power supply module is used for providing electric energy for the remote server;
And the user terminal is used for receiving and displaying the data information transmitted by the remote server.
2. the system of claim 1,
The first wireless communication module or the second wireless communication module comprises one or more of a 4G communication module, a 5G communication module and an NB-loT communication module.
3. The system of claim 1,
the user terminal is further used for receiving the instruction information input by the user and transmitting the instruction information to the remote server;
the remote server is further configured to receive the instruction information transmitted by the user terminal through the second wireless communication module, and transmit the instruction information to the data conversion terminal through the second wireless communication module;
the data conversion end is further configured to receive the instruction information transmitted by the remote server through the first wireless communication module, and transmit the instruction information to the acquisition terminal through the second LoRa wireless communication module;
The user terminal comprises one or more of a smart phone, a personal computer or a palm computer with a communication function.
4. the system of claim 1,
The power supply module of the remote server comprises a solar cell unit and a battery pack unit; the solar cell unit is used for receiving solar energy, converting the received solar energy into electric energy and transmitting the electric energy to the battery pack unit for storage; the battery pack unit is used for providing electric energy for the remote server.
5. The system of claim 4,
The power supply module of the remote server further comprises an electric quantity detection unit; the electric quantity detection unit is used for detecting electric quantity information stored in the battery pack unit, comparing the electric quantity information with preset electric quantity threshold information in electric quantity detection, and controlling the solar cell unit to receive solar energy, convert the received solar energy into electric energy and transmit the electric energy to the battery pack unit for storage when the electric quantity information is lower than the preset electric quantity threshold information.
6. The system of claim 4,
the system also comprises a monitoring end;
The remote server also comprises a monitoring module; the monitoring module comprises a temperature detection unit, a humidity detection unit, a flame detection unit and a control unit; wherein the content of the first and second substances,
the temperature detection unit is used for detecting the temperature information of the working environment of the battery pack unit and transmitting the temperature information to the control unit; the humidity detection unit is used for detecting humidity information of the working environment of the battery pack unit and transmitting the humidity information to the control unit; the flame detection unit is used for detecting flame information of the working environment of the battery pack unit and transmitting the flame information to the control unit; the control unit is used for transmitting the temperature information, the humidity information and the flame information to a monitoring end of a worker through the second wireless communication module;
and the monitoring end is used for displaying the temperature information, the humidity information and the flame information to the staff.
7. the system of claim 6,
the monitoring end also comprises a processing module and an alarm module; the processing module is used for judging whether the working environment of the battery pack unit is abnormal or not according to the temperature information, the humidity information and the flame information, and transmitting alarm information to the alarm module to give an alarm when the working environment of the battery pack unit is abnormal; .
the alarm module comprises one or more of an LED lamp alarm, a sound alarm or an audible and visual alarm.
8. the system of claim 6,
the remote server also comprises a storage module;
the control unit is also used for transmitting and storing the temperature information, the humidity information and the flame information to the storage module;
The storage module comprises an information identification unit, a temperature information storage unit, a humidity information storage unit and a flame information storage unit; the information identification unit is used for transmitting and storing the temperature information transmitted by the control unit to the temperature information storage unit; the humidity information storage unit is also used for storing the humidity information transmitted by the control unit; the flame information transmitted by the control unit is transmitted to the flame information storage unit for storage;
the temperature information storage unit is used for acquiring first time information when the transmitted temperature information is received and storing the temperature information and the first time information; the humidity information storage unit is used for acquiring second time information when the transmitted humidity information is received, and storing the humidity information and the second time information; the flame information storage unit is used for acquiring third time information when the transmitted flame information is received, and storing the flame information and the third time information;
the monitoring end is also used for receiving an information query instruction sent by the staff and transmitting the information query instruction to the storage module of the remote server; the storage module is used for searching temperature information, humidity information or flame information corresponding to the information query instruction in the temperature information storage unit, the humidity information storage unit and the flame information storage unit according to the information query instruction, and transmitting the acquired temperature information, humidity information or flame information and the corresponding first time information, second time information and third time information to the monitoring end.
9. the system of claim 1,
In order to prolong the service life of the user terminal, save power consumption and simultaneously not occupy a data transmission channel, the user terminal is controlled to be activated on time, wherein the specific steps of controlling the user terminal to be activated on time are as follows:
Firstly, obtaining an activation time interval according to the following steps A1-A3;
step A1, obtaining the bandwidth and the spreading factor of the user terminal, and substituting the value into a formula (1) to obtain the transmission duration of the confirmation information in the information transmission system;
Wherein Tq is a transmission duration of the acknowledgement information in the information transmission system, M is a length of the acknowledgement information preset in the information transmission system, DG is a spreading factor of the user terminal, NE is a bandwidth of the user terminal, and VT is a coding rate preset in the information transmission system;
step A2, obtaining the transmission duration of the effective information by using a formula (2);
wherein AZ is the byte number of effective information when the system transmits information, J is to judge whether the information transmission system transmits a header when transmitting information, when the header is transmitted, the J is 1, when the header is not transmitted, the J is 0,rounding the data, and taking 0 when the data is negative;
Step A3, calculating activation time interval using equation (3)
T＝Tq+Td
(3)
wherein T is an activation interval;
then, the user terminal activates once every time T, and judges whether the remote server sends out the confirmation information after activation,
the confirmation information is that when the far-end server transmits data to the user side, a piece of confirmation information is sent to the user side firstly so as to be used for searching a corresponding user terminal;
when the remote server searches for the corresponding user terminal through the confirmation information, in order to avoid the situation that the user terminal cannot be found when the user terminal is searched by using the complete peer-to-peer information due to the occurrence of coding error, packet loss and the like in the transmission process of the confirmation information, the user terminal is searched by using a formula (4);
wherein d isjmatching degree of confirmation information sent by a remote server and a user terminal, q is the number of matched characters of identification information of the user terminal and the confirmation information sent by the remote server, d1 is the number of characters which are contained in the identification information of the user terminal and are commonly contained in the confirmation information, d2 is the number of characters which are contained in the identification information of the user terminal and are commonly contained in the confirmation information, a is a preset standard weight, the preset value is generally 0.1, z is a preset weight coefficient, the preset value is generally 2, and the matching degree d of all the user terminals and the confirmation information is calculatedjThe user terminal with the maximum matching degree value is the searched corresponding user terminal;
and if the corresponding user terminal is not the current user terminal, the user terminal continues to enter the rest mode for waiting time T and then is activated again.
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