CN205657845U - Based on GPS time reference multi -point synchronization communication device - Google Patents
Based on GPS time reference multi -point synchronization communication device Download PDFInfo
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- CN205657845U CN205657845U CN201620482713.0U CN201620482713U CN205657845U CN 205657845 U CN205657845 U CN 205657845U CN 201620482713 U CN201620482713 U CN 201620482713U CN 205657845 U CN205657845 U CN 205657845U
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Abstract
The utility model provides a based on GPS time reference multi -point synchronization communication device, when 802.15.4 communication can be realized using by this equipment of, multichannel timesharing data synchronous communication was applied to data acquisition and processing simultaneously. GPS can provide precise time benchmark information, through receiving synchronization pulse signal and the time information that GPS ( global positioning system ) sent, provides precise time information and time synchronization signal for the communication of equipment data acquisition subtotal is partial. The utility model discloses the advantage: MCU that 1s synchronization signal through GPS time service module inputed each communications facilities suspends the pin, can regularly constantly carry out synchronization at the beginning to the MCU timer, will possess the uniformity based on synchronous each communications facilities's of GPS timer timing error, data transmission's synchronization takes place constantly with periodic, receives GPS synchronous, can improve the accuracy of synchronous communication, adopt the multichannel timesharing communication method based on the GPS time reference, the mutual noninterference of data transmission between many equipment.
Description
Technical field
The invention belongs to the communication applications field of motion monitoring product, be specifically related to a kind of based on GPS-time reference Multipoint synchronous communication dress
Put.
Background technology
During sports training is monitored, owing to the data source synchronization and related data that there is multiple equipment is transferred to same equipment and carries out
Analyze, or the multiple data of individual equipment need synchronization distribution to the application of multiple equipment., there is the regular hour same in the distribution of data and transmission
Step requirement, this collection being accomplished by data and transmission and communication are based on benchmark at the same time.GPS not only has positioning function, moreover it is possible to provide accurately
The unified time.Synchronous communication method based on GPS-time reference and equipment thereof, it is possible to solve the precise synchronization communication of time-division multiplexer, data
The functions such as sample-synchronous, the communication that may be used for the Related products such as motion monitoring is transmitted with data.
802.15.4 communication protocol be for low-rate wireless personal area network (low-rate wireless personal area network,
LR-WPAN) standard is formulated.This standard using low-energy-consumption, lower rate transmissions, low cost as highest priority, it is intended between distinct device
Low speed interconnection provides unified standard.802.15.4 communication protocol defines the frame of four types altogether: beacon frame, Frame, acknowledgement frame and MAC order
Frame.Beacon frame can be used to identify a territory net, synchronizes the equipment in a territory net, describes superframe structure etc..Low rate wireless personal area network allows alternative
Use superframe (superframe) structure.The form of superframe is determined by coordinator.Under the pattern using superframe structure, coordinator can be according to setting
Putting and periodically send beacon frame (beacon), by introducing GPS-time reference, obtain accurate time reference signal, synchronization coordinator is periodically
Send beacon frame, thus can guarantee that the stationary problem during multiple device talks with GPS-time reference.
Summary of the invention
This utility model purpose is to provide a kind of based on GPS-time reference Multipoint synchronous communicator, and this equipment is capable of applying 802.15.4
During communication, multichannel time data synchronous communication, apply simultaneously to data acquisition and procession.GPS can provide precise time reference information, passes through
Receive synchronization pulse and temporal information that GPS (GPS) sends, provide essence for device data acquisition part and communication part
True temporal information and time synchronizing signal.
For achieving the above object, this utility model is by the following technical solutions:
A kind of based on GPS-time reference Multipoint synchronous communicator, including wireless mobile station and communication extension, wherein communication extension includes at MCU
Reason unit, GPS time service module, gps antenna, 802.15.4 communication module, 802.15.4 communication module antenna, data interface module, power supply pipe
Reason module, wherein GPS time service module, wireless communication module, data interface module are connected with MCU processing unit, gps antenna and GPS time service mould
Block is connected, and 802.15.4 communication module antenna is connected with 802.15.4 communication module, power management module MCU processing unit, GPS respectively
Time service module, 802.15.4 communication module, data interface module are connected, and provide power supply.
Described wireless mobile station, for setting up communication connection with multiple communication extensions.
Described GPS time service module, gps antenna, be used for obtaining high-precision GPS time reference signal；
Described data interface module, is used for receiving external data source, and carries out data interface conversion and dissection process；
Described MCU processing unit, adds timestamp for receiving data message, and MCU processing unit is to receive the high-precision GPS time as base simultaneously
Standard, controls to receive data and sends opportunity；
Described 802.15.4 communication module, sends the data that MCU processing unit transmits in real time.
Described GPS module, uses high-precision GPS time service module, and time precision error is less than 1 microsecond；Described gps antenna uses 360 degree
Helical antenna.
Described data interface module, supports to receive multichannel data source signal.
Described power management module, comprises battery, power management；Battery is used for providing equipment electric energy, and power management module is used for detecting power supply
Charging, electric discharge and battery electric quantity, send warning signal when battery electric quantity is less than lower limit, output of cutting off the electricity supply when battery electric quantity is less than ultimate value.
Described 802.15.4 communication module, and between wireless mobile station, use 802.15.4 agreement to carry out data communication；
Described wireless mobile station, built-in 802.15.4 communication module has multiple passage, and each passage leads to for the data of single communication extension
Letter.
Use the present invention of technique scheme, it has the advantage that
(1) present invention is input to the MCU interruption pin of each communication apparatus by the 1s synchronizing signal of GPS time service module, can be to the timing of MCU intervalometer
Moment synchronizes at the beginning, and the intervalometer timing error of each communication apparatus based on GPS synchronization is by with consistency；
(2) there is the moment in the present invention, data send synchronization and periodicity, is synchronized by GPS, can improve the degree of accuracy of synchronous communication；
(3) using multichannel time-sharing communication method based on GPS-time reference in the present invention, between many equipment, data transmission does not interfere with each other.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of the present invention.
Fig. 2 is the overall data transmission figure of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in further detail.But it is real that the present invention is not restricted to these
Execute example.
Unless the context clearly requires otherwise, otherwise the similar word such as entire disclosure and " including " " the comprising " in claims should be construed to bag
The implication contained rather than exclusive or exhaustive implication；It is to say, be the implication of " including but not limited to ".
In describing the invention, except as otherwise noted, " multiple " are meant that two or more.
As it is shown in figure 1, one is based on GPS-time reference Multipoint synchronous communicator, including wireless mobile station and communication extension, Qi Zhongtong
News extension set includes MCU processing unit, GPS time service module, gps antenna, 802.15.4 communication module, 802.15.4 communication module antenna, data
Interface module, power management module, wherein GPS time service module, wireless communication module, data interface module are connected with MCU processing unit, GPS
Antenna is connected with GPS time service module, and 802.15.4 communication module antenna is connected with 802.15.4 communication module, power management module MCU respectively
Processing unit, GPS time service module, 802.15.4 communication module, data interface module are connected, and provide power supply.
Described wireless mobile station, for setting up communication connection with multiple communication extensions.
Described GPS time service module, gps antenna, be used for obtaining high-precision GPS time reference signal；
Described data interface module, is used for receiving external data source, and carries out data interface conversion and dissection process；
Described MCU processing unit, adds timestamp for receiving data message, and MCU processing unit is to receive the high-precision GPS time as base simultaneously
Standard, controls to receive data and sends opportunity；
Described 802.15.4 communication module, sends the data that MCU processing unit transmits in real time.
Described GPS module, uses high-precision GPS time service module, and time precision error is less than 1 microsecond；Described gps antenna uses 360 degree
Helical antenna.
Described data interface module, supports to receive multichannel data source signal.
Described power management module, comprises battery, power management；Battery is used for providing equipment electric energy, and power management module is used for detecting power supply
Charging, electric discharge and battery electric quantity, send warning signal when battery electric quantity is less than lower limit, output of cutting off the electricity supply when battery electric quantity is less than ultimate value.
Described 802.15.4 communication module, and between wireless mobile station, use 802.15.4 agreement to carry out data communication；
Described wireless mobile station, built-in 802.15.4 communication module has multiple passage, and each passage leads to for the data of single communication extension
Letter.
As in figure 2 it is shown, obtained high-precision GPS reference time signal by GPS time service module, it is first connected to the interrupt pin of MCU,
Interruption is carried out synchronize and timing, after synchronized, timing, it is provided that timing signal is for data communication；Data interface module receives and respectively sets simultaneously
Standby collection initial data also transmits to MCU processor, and the data that data interface module is transmitted by MCU processor cache, and during to receive GPS
The transmission of timing controlled data on the basis of between, data after MCU processor processes, send to wireless mobile station through 802.15.4 communication module.
A kind of based on GPS-time reference Multipoint synchronous communication means, comprise the following steps:
1., GPS time service module receives gps satellite time reference signal, and passes through I2C bus transfer to MCU processing unit, data interface module reception
Each equipment gathers initial data and transmits to MCU processing unit；
2., communication extension MCU processing unit data that data interface module is transmitted cache, and on the basis of receiving gps time, timing controlled number
According to transmission, after transmission, data transmission is to the 802.15.4 communication module of communication extension；
3., reception data are sent to wireless mobile station by communication extension 802.15.4 communication module in real time；
4., wireless mobile station will receive multiplex communication extension set send data, be transmitted to relevant device in real time and carry out data analysis.
In step 1, described data interface module, the data message of reception is digital signal, and this signal is sent into after interface protocol is changed
MCU processing unit.
In step 2, described GPS time service module, obtain high-precision GPS reference time signal, be firstly connected to MCU interruption pin,
Clock synchronization and timing is carried out, for synchronization and the timing of each communication module MCU so that it is carry out under same synchronizing signal during communication in interruption
Data syn-chronization, timing sends.
In step 2, described MCU processing unit, when carrying out communication, the time reference signal of first GPS time service module is by connecting MCU
Interrupt pin, when the rising edge of time reference signal arrives, trigger and interrupt, in interrupt service routine, carry out clock and synchronize and intervalometer
Fixed cycle operator.
In step 2, when described MCU processing unit data send, it is synchronized with GPS reference clock, starts to send data；Described MCU process
Unit each data transmission interval time length can be configured by software, is namely configured intervalometer initial value.
In step 2, described communication extension MCU processing unit data send opportunity, according to wireless mobile station management communication extension title and
Each communication extension number order periodic cycle sends data.
In step 3, described communication extension 802.15.4 communication module, use 802.15.4 agreement to enter with wireless mobile station data communication
Row communication, this agreement defines the frame of four types altogether: beacon frame, Frame, acknowledgement frame and MAC command frame；Described beacon frame can be used to know
Other territory net, synchronizes the equipment in a territory net；Described acknowledgement frame, is sent confirmation for data；When multiplex communication extension facility data to be transmitted
Time, monitoring sync beacon frame, obtain communication link state；After obtaining channel resource, begin setting up link transmission data, after receiving data,
Sending answer signal, communication completes.
In step 4, described wireless mobile station, it is used for managing multiple wireless telecommunications extension set and carries out data communication, forward communication extension to send out simultaneously
The data sent.
The present invention can the synchronization of MCU dominant frequency of real-time communication equipment, the intervalometer of each communication apparatus based on main frequency synchronization, timing error will
With consistency.
There is the moment in synchronization and periodicity that in the present invention, data send, is synchronized by GPS, can improve the degree of accuracy of synchronous communication.
Using multichannel time-sharing communication method based on GPS-time reference in the present invention, between many equipment, data transmission does not interfere with each other.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, to those skilled in the art, the present invention
Can there be various change and change.All any modification, equivalent substitution and improvement etc. made within spirit and principles of the present invention, should be included in
Within protection scope of the present invention.
Claims (6)
1. one kind based on GPS-time reference Multipoint synchronous communicator, it is characterized in that: it includes wireless mobile station and communication extension, wherein communication extension includes MCU processing unit, GPS time service module, gps antenna, 802.15.4 communication module, 802.15.4 communication module antenna, data interface module, power management module, wherein GPS time service module, wireless communication module, data interface module is connected with MCU processing unit, gps antenna is connected with GPS time service module, 802.15.4 communication module antenna is connected with 802.15.4 communication module, power management module MCU processing unit respectively, GPS time service module, 802.15.4 communication module, data interface module is connected, and power supply is provided；
Described wireless mobile station, for setting up communication connection with multiple communication extensions；
Described GPS time service module, gps antenna, be used for obtaining high-precision GPS time reference signal；
Described data interface module, is used for receiving external data source, and carries out data interface conversion and dissection process；
Described MCU processing unit, adds timestamp for receiving data message, and MCU processing unit is on the basis of receiving the high-precision GPS time simultaneously, controls to receive data and sends opportunity；
Described 802.15.4 communication module, sends the data that MCU processing unit transmits in real time.
The most according to claim 1 based on GPS-time reference Multipoint synchronous communicator, it is characterised in that: described GPS module, use high-precision GPS time service module, time precision error is less than 1 microsecond；Described gps antenna uses 360 degree of helical antennas.
The most according to claim 1 based on GPS-time reference Multipoint synchronous communicator, it is characterised in that: described data interface module, support to receive multichannel data source signal.
The most according to claim 1 based on GPS-time reference Multipoint synchronous communicator, it is characterised in that: described power management module, comprise battery, power management；Battery is used for providing equipment electric energy, and power management module is used for detecting power source charges, electric discharge and battery electric quantity, sends warning signal when battery electric quantity is less than lower limit, output of cutting off the electricity supply when battery electric quantity is less than ultimate value.
The most according to claim 1 based on GPS-time reference Multipoint synchronous communicator, it is characterised in that: described 802.15.4 communication module, and between wireless mobile station, use 802.15.4 agreement to carry out data communication.
The most according to claim 1 based on GPS-time reference Multipoint synchronous communicator, it is characterised in that: described wireless mobile station, built-in 802.15.4 communication module has multiple passage, and each passage is for the data communication of single communication extension.
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| CN201620482713.0U CN205657845U (en) | 2016-05-25 | 2016-05-25 | Based on GPS time reference multi -point synchronization communication device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023658A (en) * | 2016-11-04 | 2018-05-11 | 中国科学院沈阳自动化研究所 | High precision clock sync identification method and apparatus |
| CN108923878A (en) * | 2018-09-14 | 2018-11-30 | 扬州英迈克测控技术有限公司 | Based on the wireless sensor node synchronous with GPS time service of WiFi |
| CN109995454A (en) * | 2019-04-29 | 2019-07-09 | 上海窗魅光学科技有限公司 | The system and method for wireless synchronization function are realized based on GPS |
-
2016
- 2016-05-25 CN CN201620482713.0U patent/CN205657845U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023658A (en) * | 2016-11-04 | 2018-05-11 | 中国科学院沈阳自动化研究所 | High precision clock sync identification method and apparatus |
| CN108023658B (en) * | 2016-11-04 | 2023-08-29 | 中国科学院沈阳自动化研究所 | High-precision clock synchronization time service method and device |
| CN108923878A (en) * | 2018-09-14 | 2018-11-30 | 扬州英迈克测控技术有限公司 | Based on the wireless sensor node synchronous with GPS time service of WiFi |
| CN108923878B (en) * | 2018-09-14 | 2024-03-22 | 扬州英迈克测控技术有限公司 | Sensor node based on WiFi wireless and GPS time service synchronization |
| CN109995454A (en) * | 2019-04-29 | 2019-07-09 | 上海窗魅光学科技有限公司 | The system and method for wireless synchronization function are realized based on GPS |
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