CN104301060B - A kind of node synchronous collection method and system sampled based on hardware trigger - Google Patents
A kind of node synchronous collection method and system sampled based on hardware trigger Download PDFInfo
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- CN104301060B CN104301060B CN201410584613.4A CN201410584613A CN104301060B CN 104301060 B CN104301060 B CN 104301060B CN 201410584613 A CN201410584613 A CN 201410584613A CN 104301060 B CN104301060 B CN 104301060B
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Abstract
The invention discloses a kind of node synchronous collection method and system sampled based on hardware trigger, for third party's acquisition node of time synchronized can not be carried out in radio sensing network with other acquisition nodes and radio network gateway, measure first third party's acquisition node receive hardware trigger sampled signal to its collect data when time delay, after control terminal sends the acquisition instructions comprising synchronous acquisition time point, by the first acquisition node of the time synchronized being connected with third party's acquisition node, at the time point of synchronous acquisition time point advance time-delay time, by hardware trigger, third party's acquisition node is passively gathered, thus achieving can be with the acquisition node of time synchronized and the synchronous acquisition for the third party's acquisition node for being unable to time synchronized in same network.
Description
Technical field
The present invention relates to wireless measurement and control field, more particularly to a kind of node synchronous collection method sampled based on hardware trigger
And system.
Background technology
Now in the communications, wireless sensor network with the characteristics of its low-power consumption, low cost, distribution and self-organizing gradually into
For the focus of information perception study.Sensor network can realize that the collection of data quantifies, processing fusion and transmission are applied, at present
Applied to fields such as military affairs, environmental monitoring, Industry Controls.
Time synchronized is the important component of application of higher wireless sensor network, simple to understand to be exactly worldwide time pair
Together, make various regions that there is identical time measurement value in synchronization.In wireless sense network application, sensor node is usually required
Coordinated manipulation completes a complicated sensing task jointly.
And with the development in epoch, sensor also becomes progressively to minimize, synchronous circuit and Acquisition Circuit and sensor
Often integrate, form a product individually with digital interface, due to being the conditioning for fixed sensor, this
Class product also tends to that precision is higher, has higher competitiveness in market.In integrated sensor node in evolution
In, often emphasis is different for different producer, emphasizes particularly on different fields different in terms of, due to the complicated variety and reality of research object
The polytropy of the physical quantity of border measurement, user is difficult to select the acquisition node product of one to be fully completed the biography of whole system
Feel the sampling of data.
And select after the acquisition node product of many families, due to the difference of interface, application method and synchronous method each other, own
Acquisition node can not realize it is fully synchronized, so as to cause what the data of collection can not be used in the case where carrying out the application such as model analysis
Problem.And in the prior art, mostly by the way of the circuit structure in acquisition node is transformed, make the collection section of networking
Point is applied to unified synchronous method, but this can cause the problem of cost is too high.
The content of the invention
In view of this, the invention provides a kind of node synchronous collection method and system sampled based on hardware trigger, with
Make not supporting the acquisition node of synchronous acquisition to realize synchronous acquisition originally, without changing its internal circuit.
The technological means that the present invention is used is as follows：A kind of node synchronization method sampled based on hardware trigger, including：
Clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node are provided；Wherein, wireless network
Pass is connected with the clock source and control terminal respectively, and radio network gateway and the clock source time synchronized；Each radio network gateway
Multiple first acquisition nodes of wireless connection, each first acquisition node and the radio network gateway time synchronized；The third party
Acquisition node is connected with the first acquisition node, third party's acquisition node and the radio network gateway time irreversibility, and including
Hardware trigger sampling module；
The first hardware trigger signal is sent to the hardware trigger sampling module, and records tactile from first hardware is sent
Signal to hardware trigger sampling module collect data between time delay；
Control terminal sends the collection comprising synchronous acquisition time point to first acquisition node by radio network gateway and referred to
Order；
Shift to an earlier date the time point of the time delay at the synchronous acquisition time point, first acquisition node is to described
Tripartite's node sends the second hardware trigger signal；
Third party's acquisition node receives second hardware trigger signal, carries out data acquisition.
Present invention also offers it is a kind of based on hardware trigger sample node synchronization system, including clock source, radio network gateway,
Control terminal, the first acquisition node and third party's acquisition node；
Wherein, radio network gateway is connected with the clock source and control terminal respectively, and when radio network gateway and the clock source
Between it is synchronous；Multiple first acquisition nodes of each radio network gateway wireless connection, each first acquisition node and the radio network gateway
Time synchronized；Third party's acquisition node is connected with the first acquisition node, third party's acquisition node and the wireless network
Close time irreversibility；
Third party's acquisition node includes hardware trigger sampling module, and the hardware trigger sampling module, which is used to work as, to be received
Data acquisition is carried out after first hardware trigger signal or the second hardware trigger signal；
The control terminal, which is used to send to first acquisition node by radio network gateway, includes synchronous acquisition time point
Acquisition instructions；
First acquisition node includes hardware trigger signal transmitting unit and control unit；The hardware trigger signal hair
Unit is sent to be used to send the first hardware trigger signal to third party's acquisition node；Described control unit is used to record described from sending
Time delay between the data that first hardware trigger signal to hardware trigger sampling module is collected, and in the synchronization
The time point that acquisition time shifts to an earlier date the time delay controls the second hardware of the hardware trigger signal transmitting unit transmission to touch
Signal.
The node synchronous collection method and system provided by the present invention sampled based on hardware trigger, for wireless sense network
Third party's acquisition node of time synchronized can not be carried out in network with other acquisition nodes and radio network gateway, the third party is measured first
Acquisition node receive hardware trigger sampled signal to its collect data when time delay, when control terminal is sent comprising synchronous
After the acquisition instructions of acquisition time, by synchronous first acquisition node that connects with third party's acquisition node in synchronous acquisition
The time point of advance time-delay time at time point, third party's acquisition node was passively gathered by hardware trigger, was thus achieved
With can be with the acquisition node of time synchronized and the synchronous acquisition for the third party's acquisition node for being unable to time synchronized in network.
Brief description of the drawings
Fig. 1 is wireless sensor network structure schematic diagram in the present invention；
The node synchronization method schematic flow sheet that Fig. 2 is sampled for the present invention based on hardware trigger.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
The present invention is based on realization considered below：
Typically there are two kinds of acquisition modes, the i.e. the automatic data collection mode based on software and based on hard for existing acquisition node
The passive acquisition mode of part triggering；Wherein, the automatic data collection mode based on software is by receiving adopting comprising acquisition time
Collection instruction, the clock locally maintained according to acquisition node automatically initiates collection in acquisition time；And the quilt based on hardware trigger
Dynamic collection is passive initiation collection when receiving hardware trigger signal.
Hardware trigger acquisition function is respectively provided with existing acquisition node product and other acquisition nodes are triggered and carried out passively
The function of collection, the function is mainly used in the collection to excluding useless data.In the gatherer process of data, only possesses certain
The data of kind of condition are only valuable, and in the data of continuous acquisition, the data gathered most of the time are all useless.
When in face of such a situation, you can to utilize hardware trigger acquisition function, when worth of data will occur, touched by hardware
Signalling triggering collection, and exclude unworthy data.When being such as acquired to moving target, by the acquisition node of collection vibration
Speed acquisition node is triggered by hardware trigger signal when maximum is vibrated and carries out speed acquisition, during due to vibration maximum
Moving target is close to the moment, therefore, for speed acquisition node, its eliminate to moving target away from when carry out speed and adopt
The situation of collection, is acquired when only close to moving target.
The acquisition mode for the hardware trigger that existing acquisition node has is based on, present applicant proposes following technical side
Case.
As shown in Fig. 2 a kind of node synchronization method sampled based on hardware trigger of the present invention is comprised the following steps：
A kind of node synchronization method sampled based on hardware trigger, including：
Clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node are provided；Wherein, wireless network
Pass is connected with the clock source and control terminal respectively, and radio network gateway and the clock source time synchronized；Each radio network gateway
Multiple first acquisition nodes of wireless connection, each first acquisition node and the radio network gateway time synchronized；The third party
Acquisition node is connected with the first acquisition node, third party's acquisition node and the radio network gateway time irreversibility, and including
Hardware trigger sampling module；
The first hardware trigger signal is sent to the hardware trigger sampling module, and records tactile from first hardware is sent
Signal to hardware trigger sampling module collect data between time delay；
Control terminal sends the collection comprising synchronous acquisition time point to first acquisition node by radio network gateway and referred to
Order；
Shift to an earlier date the time point of the time delay at the synchronous acquisition time point, first acquisition node is to described
Tripartite's node sends the second hardware trigger signal；
Third party's acquisition node receives second hardware trigger signal, carries out data acquisition.
Corresponding to the above method, present invention also offers a kind of node synchronization system sampled based on hardware trigger, including
Clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node；
Wherein, radio network gateway is connected with the clock source and control terminal respectively, and when radio network gateway and the clock source
Between it is synchronous；Multiple first acquisition nodes of each radio network gateway wireless connection, each first acquisition node and the radio network gateway
Time synchronized；Third party's acquisition node is connected with the first acquisition node, third party's acquisition node and the wireless network
Close time irreversibility；
Third party's acquisition node includes hardware trigger sampling module, and the hardware trigger sampling module, which is used to work as, to be received
Data acquisition is carried out after first hardware trigger signal or the second hardware trigger signal；
The control terminal, which is used to send to first acquisition node by radio network gateway, includes synchronous acquisition time point
Acquisition instructions；
First acquisition node includes hardware trigger signal transmitting unit and control unit；The hardware trigger signal hair
Unit is sent to be used to send the first hardware trigger signal to third party's acquisition node；Described control unit is used to record described from sending
Time delay between the data that first hardware trigger signal to hardware trigger sampling module is collected, and in the synchronization
The time point that acquisition time shifts to an earlier date the time delay controls the second hardware of the hardware trigger signal transmitting unit transmission to touch
Signal.
Using the node synchronous collection method and system provided by the present invention sampled based on hardware trigger, for wireless biography
Third party's acquisition node of time synchronized can not be carried out with other acquisition nodes and radio network gateway by feeling in network, measure first this
Tripartite's acquisition node receive hardware trigger sampled signal to its collect data when time delay, when control terminal send include
After the acquisition instructions at synchronous acquisition time point, by synchronous first acquisition node that connects with third party's acquisition node in synchronization
The time point of advance time-delay time acquisition time, third party's acquisition node was passively gathered by hardware trigger, thus real
Show with can be with the acquisition node of time synchronized and the synchronous acquisition for the third party's acquisition node for being unable to time synchronized in network.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (2)
1. a kind of node synchronization method sampled based on hardware trigger, it is characterised in that including：
Clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node are provided；Wherein, radio network gateway point
It is not connected with the clock source and control terminal, and radio network gateway and the clock source time synchronized；Each radio network gateway is wireless
Multiple first acquisition nodes are connected, each first acquisition node and the radio network gateway time synchronized；Third party's collection
Node is connected with the first acquisition node, third party's acquisition node and the radio network gateway time irreversibility, and including hardware
Trigger sampling module；
The first hardware trigger signal is sent to the hardware trigger sampling module, and record is believed from first hardware trigger is sent
Number to hardware trigger sampling module collect data between time delay；
Control terminal sends the acquisition instructions for including synchronous acquisition time point by radio network gateway to first acquisition node；
Shift to an earlier date the time point of the time delay at the synchronous acquisition time point, first acquisition node is to the third party
Node sends the second hardware trigger signal；
Third party's acquisition node receives second hardware trigger signal, carries out data acquisition.
2. a kind of node synchronization system sampled based on hardware trigger, it is characterised in that including clock source, radio network gateway, control
Terminal, the first acquisition node and third party's acquisition node；
Wherein, radio network gateway is connected with the clock source and control terminal respectively, and radio network gateway and the clock source time are same
Step；Multiple first acquisition nodes of each radio network gateway wireless connection, each first acquisition node and the radio network gateway time
It is synchronous；Third party's acquisition node is connected with the first acquisition node, when third party's acquisition node is with the radio network gateway
Between it is asynchronous；
Third party's acquisition node includes hardware trigger sampling module, and the hardware trigger sampling module, which is used to work as, receives first
Data acquisition is carried out after hardware trigger signal or the second hardware trigger signal；
The control terminal is used to send adopting comprising synchronous acquisition time point to first acquisition node by radio network gateway
Collection instruction；
First acquisition node includes hardware trigger signal transmitting unit and control unit；The hardware trigger signal sends single
Member is used to send the first hardware trigger signal to third party's acquisition node；Described control unit is used to record from sending described first
Time delay between the data that hardware trigger signal to hardware trigger sampling module is collected, and in the synchronous acquisition
The time point that time point shifts to an earlier date the time delay controls the hardware trigger signal transmitting unit to send the second hardware trigger letter
Number.
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| CN106408914A (en) * | 2016-10-18 | 2017-02-15 | 武汉市工程科学技术研究院 | Wireless time synchronizing system for exploration instrument and synchronization realizing method thereof |
| CN111181711B (en) * | 2020-01-03 | 2022-06-28 | 小狗电器互联网科技（北京）股份有限公司 | Method and system for synchronously sampling signals, storage medium and application equipment |
| CN111510876B (en) * | 2020-04-01 | 2022-04-22 | 北京未来感知科技有限公司 | UWB technology-based wireless sensing system clock synchronization method, receiving end system and transmitting end system |
| CN111224734B (en) * | 2020-04-16 | 2020-07-17 | 成都坤恒顺维科技股份有限公司 | Synchronization system for large-scale acquisition array |
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| CN103747516A (en) * | 2013-12-06 | 2014-04-23 | 电子科技大学 | Event time tag later time synchronization method in wireless sensor network |
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| RU2589468C2 (en) * | 2011-04-05 | 2016-07-10 | Конинклейке Филипс Н.В. | Matrix of detectors with analogue-to-digital conversion of time with higher time accuracy |
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| CN101087219A (en) * | 2006-06-09 | 2007-12-12 | 中国科学院软件研究所 | Wireless sensor network time synchronization method and device based on error statistics |
| CN102404817A (en) * | 2011-10-25 | 2012-04-04 | 中国科学院计算技术研究所 | Networking method and system for wireless sensor network based on multiple sink nodes |
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