CN109990890A - A kind of massif vibration wave distributed synchronization measuring system and its working method based on LoRa - Google Patents
A kind of massif vibration wave distributed synchronization measuring system and its working method based on LoRa Download PDFInfo
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- CN109990890A CN109990890A CN201910287218.2A CN201910287218A CN109990890A CN 109990890 A CN109990890 A CN 109990890A CN 201910287218 A CN201910287218 A CN 201910287218A CN 109990890 A CN109990890 A CN 109990890A
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- lora
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- monitoring terminal
- cpu
- massif
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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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
Abstract
The present invention relates to a kind of massif vibration wave distributed synchronization measuring system and its working method based on LoRa pass through the LoRa data gateway carried out wireless communication and the server platform carried out wireless communication by GPRS and data gateway including first to n-th monitoring terminal, with first to n-th monitoring terminal；First monitors terminal to n-th and the data respectively acquired is stamped time tag respectively, and be transferred to the data gateway；Data gateway will receive each data forwarding for monitoring terminal acquisition to server platform, to be summarized, be stored and be carried out visualization processing by server platform.The system long transmission distance that the present invention uses, coverage area radius is up to 3 kilometers；The signal highly-sensitive of Lora technology is benefited from, indoor and outdoor use is not required to the special placement of antenna；Enhanced using wireless mode mobility, be not required to cloth wire cable, cost reduces.
Description
Technical field
The present invention relates to information technology field, especially a kind of massif vibration wave distributed synchronization based on LoRa measures system
System and its working method.
Background technique
Distributed synchronization measurement mainly divides wired mode and wireless mode, and it is logical that wired mode mainly passes through cable, optical fiber etc.
Letter cable, which synchronizes measurement and data transmission, wireless mode, mainly the communication modes such as Zigbee, GPRS, 4G, Lora.
Currently, realizing that distributed terminal carries out vibration measurement using Lora communication mode, just with the remote of Lora technology
Range communication capability does not synchronize metrical information, is only capable of embodying testee local characteristics, cannot embody monolithic
State.Using the wide-area distribution type system clock synchronizing method of Lora technology, it can be achieved that the network clocking of multistage routing is synchronous, but calculates
Method is more complex, while the remote transmission rate of Lora is lower, and multistage routing would potentially result in network load increase, the bit error rate mentions
Height, effect are bad instead.
Therefore, currently existing scheme has following several disadvantages:
(1) scheme synchronous using tradition GPS mode, terminal are at high cost；And GPS indoor signal is poor, need to arrange long antenna
To at outdoor spaciousness.
(2) the wired connection method of synchronization need to lay communication cable, and construction is complicated, and be easy to influence by cable damage
Total system.
(3) current distributed schemes are mostly that each local data acquires and summarizes, not in the time between these data
Upper carry out stringent synchronization, it is impossible to be used in the characteristic of analysis big structure body.
(4) method of synchronization is excessively complicated, influences synchronization accuracy instead.
Summary of the invention
In view of this, the purpose of the present invention is to propose to a kind of massif vibration wave distributed synchronization measuring system based on LoRa
And its working method, it can be enhanced using wireless mode mobility, be not required to cloth wire cable, cost reduces.
The present invention is realized using following scheme: a kind of massif vibration wave distributed synchronization measuring system based on LoRa, packet
It includes first and monitors the number that terminal is carried out wireless communication by LoRa to n-th monitoring terminal, with described first to n-th
According to gateway and the server platform carried out wireless communication by GPRS and the data gateway；Described first to n-th supervise
It surveys terminal and the 3-axis acceleration Value Data that the massif respectively acquired vibrates is stamped into time tag respectively, and be transferred to the data
Gateway；The data gateway will receive each data forwarding for monitoring terminal transmission to the server platform, to pass through
The server platform is summarized and is stored.
It further, include the first CPU, first in described first each monitoring terminal to n-th monitoring terminal
EEPROM, the first crystal oscillator module, the first Lora communications module, vibrating sensor and the first power module；The first crystal oscillator mould
Block, the first Lora communications module and first power module are connect with the first CPU；The vibrating sensor with
The first CPU connection, to acquire the 3-axis acceleration Value Data of the massif vibration；First EEPROM and described the
One CPU connection, to save the data of the vibrating sensor acquisition；First CPU also passes through the first Lora communication
Mould group is communicated with the data gateway.
Further, the data gateway includes the 2nd CPU, the 2nd EEPROM, the second crystal oscillator module, the 2nd Lora communication
Mould group, GPRS communications module and second power supply module；Second crystal oscillator module, the 2nd Lora communications module and described
Second power supply module is connect with the 2nd CPU；2nd CPU also passes through the GPRS communications module and the server
Server platform is communicated；2nd EEPROM is connect with the 2nd CPU, is passed to store each monitoring terminal
Defeated data；The 2nd Lora communications module is also connected with the first Lora communications module communication.
Further, the first CPU is using STM32F103.
Further, the first EEPROM uses AT24C512.
Further, the vibrating sensor is using MPU-6050.
Further, the GPRS communications module is using SIM900.
Further, the work for the massif vibration wave distributed synchronization measuring system based on LoRa that the present invention also provides a kind of
Method specifically includes the following steps:
Step S1: checkout time sync mark after each monitoring terminal booting waits the time of the data gateway same
Step command frame；
Step S2: the data gateway periodicity sending time synchronization command frame；Each monitoring terminal receives first
Synchronization frame postposition bit synchronization label, calculates and saves real-time time, and start the vibrating sensor and listen to, same by setting rule
The 3-axis acceleration Value Data of step acquisition massif vibration；
Step S3: the 3-axis acceleration Value Data of the massif vibration of each monitoring terminal acquisition stamps shape after time tag
It is stored at an information frame in the first EEPROM of each monitoring terminal, while according to ID number and delay parameter delay a period of time
The information frame is sent back to the data gateway afterwards；
Wherein, the delay time=ID number × delay parameter；
Step S4: the data gateway receives the information frame of each monitoring terminal, is sequentially cached to described second
EEPROM, and timing is dealt into the server platform by the GPRS communications module；
Step S5: the server platform receives the data of the data gateway, parse every data Termination ID,
Timestamp and vibration data, and be stored in the database of the server platform.
Compared with prior art, the invention has the following beneficial effects:
The system long transmission distance that the present invention uses, coverage area radius is up to 3 kilometers；Benefit from the signal of Lora technology
High sensitivity, indoor and outdoor use are not required to the special placement of antenna；Enhanced using wireless mode mobility, is not required to the wired electricity of cloth
Cable, cost reduce.
Detailed description of the invention
Fig. 1 is the system block diagram of the embodiment of the present invention.
Fig. 2 is the monitoring terminal structure block diagram of the embodiment of the present invention.
Fig. 3 is the data gateway structural block diagram of the embodiment of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, present embodiments providing a kind of massif vibration wave distributed synchronization measuring system based on LoRa, wrap
It includes first and monitors the number that terminal is carried out wireless communication by LoRa to n-th monitoring terminal, with described first to n-th
According to gateway and the server platform carried out wireless communication by GPRS and the data gateway；Described first to n-th supervise
It surveys terminal and the 3-axis acceleration Value Data that the massif respectively acquired vibrates is stamped into time tag respectively, and be transferred to the data
Gateway；The 3-axis acceleration Value Data for receiving the massif vibration of each monitoring terminal acquisition is forwarded to institute by the data gateway
Server platform is stated, to be summarized and be stored by the server platform.
As shown in Fig. 2, in the present embodiment, being wrapped in described first each monitoring terminal to n-th monitoring terminal
Include the first CPU, the first EEPROM, the first crystal oscillator module, the first Lora communications module, vibrating sensor and the first power module；
First crystal oscillator module, the first Lora communications module and first power module are connect with the first CPU；Institute
It states vibrating sensor to connect with the first CPU, to acquire the 3-axis acceleration Value Data of the massif vibration；Described first
EEPROM is connect with the first CPU, to save the data of the vibrating sensor acquisition；First CPU also passes through institute
The first Lora communications module is stated to be communicated with the data gateway.
As shown in figure 3, in the present embodiment, the data gateway includes the 2nd CPU, the 2nd EEPROM, the second crystal oscillator mould
Block, the 2nd Lora communications module, GPRS communications module and second power supply module；Second crystal oscillator module, the 2nd Lora
Communications module and the second power supply module are connect with the 2nd CPU；2nd CPU also passes through the GPRS and communicates
Mould group is communicated with the server server platform；2nd EEPROM is connect with the 2nd CPU, to store
State the data of each monitoring terminal transmission；The 2nd Lora communications module is also communicated with the first Lora communications module
It is connected.
In the present embodiment, the first CPU is ARM Cortex M kernel using STM32F103.
In the present embodiment, the first EEPROM uses AT24C512, the first CPU to communicate by I2C bus；
In the present embodiment, the vibrating sensor is produced using MPU-6050, built in motion processing unit
XYZ 3-axis acceleration component, CPU are communicated by I2C bus.
In the present embodiment, the GPRS communications module is using SIM900.
Preferably, also providing a kind of work of massif vibration wave distributed synchronization measuring system based on LoRa in the present embodiment
Make method specifically includes the following steps:
Step S1: checkout time sync mark after each monitoring terminal booting waits the time of the data gateway same
Step command frame；
Step S2: the data gateway periodicity sending time synchronization command frame；Each monitoring terminal receives first
Synchronization frame postposition bit synchronization label, calculates and saves real-time time, and start the vibrating sensor and listen to, same by setting rule
The 3-axis acceleration Value Data of step acquisition massif vibration；(the data of acquisition in such as every 10 seconds, then can be by the per minute of real-time clock
The 0.00th second, the 10.00th second, the 20.00th second ... and so on triggering collection function)；
Step S3: the 3-axis acceleration Value Data of the massif vibration of each monitoring terminal acquisition stamps shape after time tag
It is stored at an information frame in the first EEPROM of each monitoring terminal, while according to ID number and delay parameter delay a period of time
The information frame is sent back to the data gateway afterwards, reduces network conflict；
Wherein, the delay time=ID number × delay parameter；Monitoring Termination ID coding in the local area network be it is unique,
If ID number is 5, delay parameter 0.5S, then send data after the 2.5S that is delayed (5 multiplied by 0.5S)；
Step S4: the data gateway receives the information frame of each monitoring terminal, is sequentially cached to described second
EEPROM, and timing is dealt into the server platform by the GPRS communications module；
Step S5: the server platform receives the data of the data gateway, parse every data Termination ID,
Timestamp and vibration data, and be stored in the database of the server platform.
Preferably, in the present embodiment, time synchronization frame format, including command field, data field；Wherein command field contains 2
Byte such as defines 0xFF0xA3 and represents synch command, then data field is the standard time that gateway issues, and data field contains 8 bytes,
Be respectively date code (1 byte), when (1 byte), point (1 byte), the second (1 byte), millisecond (2 bytes), micro-
Second (2 bytes)；Date code, which represents, in such a month, and on such a day to be recorded by gateway in certain year, and spilling then adds up.
Preferably, the data that the system monitoring terminal of the present embodiment acquires, which stamp time tag, is transferred to data gateway simultaneously
Backup is in local storage；Data gateway has time synchronization service function, in data set and forwarding, server platform configuration
The functions such as forwarding；Server platform then summarizes, stores each terminal data, and carries out visualization presentation.
Particularly, in the present embodiment, the processing for monitoring terminal time of receipt (T of R) synchronization frame, need to consider that wireless communication transmission is prolonged
When etc. factors, synchronization frame the delay that the Lora mould group of terminal is transferred to after Lora mould group is output to after organizing in gateway CPU
Time includes the lead code time of Lora to add packet transmission time, with spreading factor, encoding rate, the signal being arranged when transmission
The relating to parameters such as bandwidth, the transmission time are defined as T1；Gateway CPU needs time-consuming T2, terminal CPU to receive when pushing synchronization frame
Dissection process needs time-consuming T3 after synchronization frame；Then the time used by terminal should be the included time+T1+T2+T3 of synchronization frame.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (8)
1. a kind of massif vibration wave distributed synchronization measuring system based on LoRa, it is characterised in that: including first to n-th
Monitoring terminal by the LoRa data gateway carried out wireless communication and passes through with described first to n-th monitoring terminal
The server platform that GPRS and the data gateway carry out wireless communication；Described first to n-th monitoring terminal respectively will be each
The 3-axis acceleration Value Data vibrated from the massif of acquisition stamps time tag, and is transferred to the data gateway；The data
Gateway will receive each data forwarding for monitoring terminal transmission to the server platform, to pass through the server platform
Summarized and is stored.
2. a kind of massif vibration wave distributed synchronization measuring system based on LoRa according to claim 1, feature exist
In: it include the first CPU, the first EEPROM, the first crystal oscillator in described first each monitoring terminal to n-th monitoring terminal
Module, the first Lora communications module, vibrating sensor and the first power module；First crystal oscillator module, the first Lora
Communications module and first power module are connect with the first CPU；The vibrating sensor and the first CPU connect
It connects, to acquire the 3-axis acceleration Value Data of the massif vibration；First EEPROM is connect with the first CPU, is used
To save the data of the vibrating sensor acquisition；First CPU also passes through the first Lora communications module and the number
It is communicated according to gateway.
3. a kind of massif vibration wave distributed synchronization measuring system based on LoRa according to claim 1, feature exist
In: the data gateway includes the 2nd CPU, the 2nd EEPROM, the second crystal oscillator, the 2nd Lora communications module, GPRS communications module
And second power supply module；Second crystal oscillator module, the 2nd Lora communications module and the second power supply module are and institute
State the 2nd CPU connection；2nd CPU is also led to by the GPRS communications module and the server server platform
Letter；2nd EEPROM is connect with the 2nd CPU, to store the data of each monitoring terminal transmission；Described
Two Lora communications modules are also connected with the first Lora communications module communication.
4. a kind of massif vibration wave distributed synchronization measuring system based on LoRa according to claim 2, feature exist
In: the first CPU is using STM32F103.
5. a kind of massif vibration wave distributed synchronization measuring system based on LoRa according to claim 2, feature exist
In: the first EEPROM uses AT24C512.
6. a kind of massif vibration wave distributed synchronization measuring system based on LoRa according to claim 2, feature exist
In: the vibrating sensor is using MPU-6050.
7. a kind of massif vibration wave distributed synchronization measuring system based on LoRa according to claim 3, feature exist
In: the GPRS communications module is using SIM900.
8. any one of -7 a kind of work of the massif vibration wave distributed synchronization measuring system based on LoRa according to claim 1
Make method specifically includes the following steps:
Step S1: checkout time sync mark after each monitoring terminal booting waits the time synchronization of the data gateway to order
Enable frame；
Step S2: the data gateway periodicity sending time synchronization command frame；Each monitoring terminal receives first synchronization
Frame postposition bit synchronization label, calculates and saves real-time time, and start the vibrating sensor and listen to, and synchronizes and adopts by setting rule
Collect the 3-axis acceleration Value Data of massif vibration；
Step S3: the 3-axis acceleration Value Data of the massif vibration of each monitoring terminal acquisition forms one after stamping time tag
A information frame is stored in the first EEPROM of each monitoring terminal, while according to ID number and handle after delay parameter delay a period of time
The information frame sends back to the data gateway；Wherein, the delay time=ID number × delay parameter；
Step S4: the data gateway receives the information frame of each monitoring terminal, is sequentially cached to the 2nd EEPROM, and
Timing is dealt into the server platform by the GPRS communications module；
Step S5: the server platform receives the data of the data gateway, parses Termination ID, the time of every data
Stamp and vibration data, and be stored in the database of the server platform.
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| CN110363980A (en) * | 2019-07-25 | 2019-10-22 | 四川长虹电器股份有限公司 | LoRa acquisition device and its acquisition method based on TDMA and Contiki |
| CN113794630A (en) * | 2021-09-14 | 2021-12-14 | 电掣物联网技术(深圳)有限公司 | Multi-mode data acquisition method and system |
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