CN104301060A - Node synchronous collecting method and system based on hardware triggering sampling - Google Patents
Node synchronous collecting method and system based on hardware triggering sampling Download PDFInfo
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- CN104301060A CN104301060A CN201410584613.4A CN201410584613A CN104301060A CN 104301060 A CN104301060 A CN 104301060A CN 201410584613 A CN201410584613 A CN 201410584613A CN 104301060 A CN104301060 A CN 104301060A
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Abstract
The invention discloses a node synchronous collecting method and system based on hardware triggering sampling. As for a third-party collecting node which can not be synchronized with other collecting nodes or a wireless gateway in time in a wireless sensor network, firstly, delay time from when the third-party collecting node receives a hardware triggering sampling signal to when data are collected is measured, when a control terminal sends a collecting instruction including a synchronous collecting time point, the third-party collecting node is triggered for passive collecting through hardware by means of a first collecting node which is synchronized in time and connected with the third-party collecting node at a time point ahead of the delay time at a synchronous collecting time point, and accordingly synchronous collecting of the collecting node capable of being synchronized in time and the third-party collecting node incapable of being synchronized in time is achieved in the same network.
Description
Technical field
The present invention relates to radio fest and control field, particularly relate to a kind of synchronisation of nodes acquisition method based on hardware trigger sampling and system.
Background technology
Now in the communications, wireless sensor network becomes with its low-power consumption, low cost, feature that is distributed and self-organizing the focus that information Perception is studied gradually.The collection that sensor network can realize data quantizes, processes and merge and transmission application, has been applied to the fields such as military affairs, environmental monitoring, Industry Control at present.
Time synchronized is the important component part of wireless sensor network application, and simple understanding is alignd worldwide time exactly, makes various places have identical time measurement value at synchronization.In wireless sense network application, sensor node needs coordinated manipulation jointly to complete a complicated sensing task usually.
And along with the development in epoch, transducer also becomes progressively miniaturized, synchronous circuit and Acquisition Circuit and transducer often integrate, form an independent product with digital interface, owing to being the conditioning for fixation of sensor, also often precision is higher for this series products, has higher competitiveness in market.At integrated sensor node in evolution, different producer often emphasis is different, emphasize particularly on different fields in different, due to the polytropy of the complicated variety of research object and the physical quantity of actual measurement, user is difficult to select the acquisition node product of all to complete the sampling of the sensing data of whole system.
And after selecting the acquisition node product of many families, due to the difference of interface, using method and synchronous method each other, all acquisition nodes cannot realize all synchronous, thus cause the data of collection in the problem of carrying out cannot using under the application such as model analysis.And in prior art, mostly adopt the mode that the circuit structure in acquisition node is transformed, make the acquisition node of networking be applicable to unified synchronous method, but this can cause the problem of high cost.
Summary of the invention
In view of this, the invention provides a kind of synchronisation of nodes acquisition method based on hardware trigger sampling and system, to make originally not support that the acquisition node of synchronous acquisition realizes synchronous acquisition, and do not need to change its internal circuit.
The technological means that the present invention adopts is as follows: a kind of node synchronization method based on hardware trigger sampling, comprising:
Clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node are provided; Wherein, radio network gateway is connected with described clock source and control terminal respectively, and radio network gateway and described clock source time synchronized; Multiple first acquisition node of each radio network gateway wireless connections, each described first acquisition node and this radio network gateway time synchronized; Described third party's acquisition node is connected with the first acquisition node, described third party's acquisition node and described radio network gateway time irreversibility, and comprises hardware trigger sampling module;
Send the first hardware trigger signal to described hardware trigger sampling module, and record collects time of delay between data from sending described first hardware trigger signal to hardware trigger sampling module;
Control terminal sends to described first acquisition node the acquisition instructions comprising synchronous acquisition time point by radio network gateway;
Shift to an earlier date the time point of described time of delay at described synchronous acquisition time point, described first acquisition node sends the second hardware trigger signal to described third party's node;
Described third party's acquisition node receives described second hardware trigger signal, carries out data acquisition.
Present invention also offers a kind of synchronisation of nodes system based on hardware trigger sampling, comprise clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node;
Wherein, radio network gateway is connected with described clock source and control terminal respectively, and radio network gateway and described clock source time synchronized; Multiple first acquisition node of each radio network gateway wireless connections, each described first acquisition node and this radio network gateway time synchronized; Described third party's acquisition node is connected with the first acquisition node, described third party's acquisition node and described radio network gateway time irreversibility;
Described third party's acquisition node comprises hardware trigger sampling module, and described hardware trigger sampling module is used for when receiving the first hardware trigger signal or the laggard row data acquisition of the second hardware trigger signal;
Described control terminal is used for sending to described first acquisition node the acquisition instructions comprising synchronous acquisition time point by radio network gateway;
Described first acquisition node comprises hardware trigger signal transmitting unit and control unit; Described hardware trigger signal transmitting unit is used for sending the first hardware trigger signal to third party's acquisition node; Described control unit for recording the time of delay from sending between data that described first hardware trigger signal to hardware trigger sampling module collects, and for described synchronous acquisition time point in advance the time point of described time of delay control described hardware trigger signal transmitting unit and send the second hardware trigger signal.
Synchronisation of nodes acquisition method based on hardware trigger sampling provided by the present invention and system, third party's acquisition node of time synchronized cannot be carried out with other acquisition nodes and radio network gateway in radio sensing network, first measure this third party's acquisition node and receive time of delay when hardware trigger sampled signal collects data to it, after control terminal transmission comprises the acquisition instructions of synchronous acquisition time point, passive collection is carried out at the time point of synchronous acquisition time point advance time-delay time by this third party's acquisition node of hardware trigger by with synchronous first acquisition node that this third party's acquisition node connects, to thus achieve in same network can time synchronized acquisition node and can not the synchronous acquisition of third party's acquisition node of time synchronized.
Accompanying drawing explanation
Fig. 1 is wireless sensor network structure schematic diagram in the present invention;
Fig. 2 is the node synchronization method schematic flow sheet that the present invention is based on hardware trigger sampling.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
The present invention realizes based on following consideration:
Two kinds of acquisition modes are generally had, namely based on the automatic acquisition mode of software and the passive acquisition mode based on hardware trigger for existing acquisition node; Wherein, the automatic acquisition mode based on software is by the acquisition instructions of receiving package containing acquisition time, according to the clock that acquisition node this locality maintains, automatically initiates to gather in acquisition time; And based on the passive collection of hardware trigger for receiving hardware trigger signal time, passive initiation collection.
All have hardware trigger acquisition function in existing acquisition node product and trigger the function that other acquisition nodes carry out passive collection, this function is mainly used in the collection to getting rid of useless data.In the gatherer process of data, the data only possessing certain condition are only valuable, and in the data of continuous acquisition, the data gathered time most of are all useless.When in the face of this kind of situation, namely can utilize hardware trigger acquisition function, when valuable data are about to occur, by hardware trigger signal triggering collection, and get rid of unworthy data.During as gathered moving target, in time vibrating maximum, trigger speed acquisition node by hardware trigger signal by the acquisition node gathering vibration and carry out speed acquisition, due to vibration maximum time and moving target close to the moment, therefore, for speed acquisition node, its eliminate to moving target away from time carry out the situation of speed acquisition, only to moving target close to time gather.
The acquisition mode of the hardware trigger had based on existing acquisition node just, present applicant proposes following technical scheme.
As shown in Figure 2, a kind of node synchronization method based on hardware trigger sampling of the present invention comprises the steps:
Based on a node synchronization method for hardware trigger sampling, comprising:
Clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node are provided; Wherein, radio network gateway is connected with described clock source and control terminal respectively, and radio network gateway and described clock source time synchronized; Multiple first acquisition node of each radio network gateway wireless connections, each described first acquisition node and this radio network gateway time synchronized; Described third party's acquisition node is connected with the first acquisition node, described third party's acquisition node and described radio network gateway time irreversibility, and comprises hardware trigger sampling module;
Send the first hardware trigger signal to described hardware trigger sampling module, and record collects time of delay between data from sending described first hardware trigger signal to hardware trigger sampling module;
Control terminal sends to described first acquisition node the acquisition instructions comprising synchronous acquisition time point by radio network gateway;
Shift to an earlier date the time point of described time of delay at described synchronous acquisition time point, described first acquisition node sends the second hardware trigger signal to described third party's node;
Described third party's acquisition node receives described second hardware trigger signal, carries out data acquisition.
Corresponding to said method, present invention also offers a kind of synchronisation of nodes system based on hardware trigger sampling, comprise clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node;
Wherein, radio network gateway is connected with described clock source and control terminal respectively, and radio network gateway and described clock source time synchronized; Multiple first acquisition node of each radio network gateway wireless connections, each described first acquisition node and this radio network gateway time synchronized; Described third party's acquisition node is connected with the first acquisition node, described third party's acquisition node and described radio network gateway time irreversibility;
Described third party's acquisition node comprises hardware trigger sampling module, and described hardware trigger sampling module is used for when receiving the first hardware trigger signal or the laggard row data acquisition of the second hardware trigger signal;
Described control terminal is used for sending to described first acquisition node the acquisition instructions comprising synchronous acquisition time point by radio network gateway;
Described first acquisition node comprises hardware trigger signal transmitting unit and control unit; Described hardware trigger signal transmitting unit is used for sending the first hardware trigger signal to third party's acquisition node; Described control unit for recording the time of delay from sending between data that described first hardware trigger signal to hardware trigger sampling module collects, and for described synchronous acquisition time point in advance the time point of described time of delay control described hardware trigger signal transmitting unit and send the second hardware trigger signal.
Adopt the synchronisation of nodes acquisition method based on hardware trigger sampling provided by the present invention and system, third party's acquisition node of time synchronized cannot be carried out with other acquisition nodes and radio network gateway in radio sensing network, first measure this third party's acquisition node and receive time of delay when hardware trigger sampled signal collects data to it, after control terminal transmission comprises the acquisition instructions of synchronous acquisition time point, passive collection is carried out at the time point of synchronous acquisition time point advance time-delay time by this third party's acquisition node of hardware trigger by with synchronous first acquisition node that this third party's acquisition node connects, to thus achieve in same network can time synchronized acquisition node and can not the synchronous acquisition of third party's acquisition node of time synchronized.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (2)
1., based on a node synchronization method for hardware trigger sampling, it is characterized in that, comprising:
Clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node are provided; Wherein, radio network gateway is connected with described clock source and control terminal respectively, and radio network gateway and described clock source time synchronized; Multiple first acquisition node of each radio network gateway wireless connections, each described first acquisition node and this radio network gateway time synchronized; Described third party's acquisition node is connected with the first acquisition node, described third party's acquisition node and described radio network gateway time irreversibility, and comprises hardware trigger sampling module;
Send the first hardware trigger signal to described hardware trigger sampling module, and record collects time of delay between data from sending described first hardware trigger signal to hardware trigger sampling module;
Control terminal sends to described first acquisition node the acquisition instructions comprising synchronous acquisition time point by radio network gateway;
Shift to an earlier date the time point of described time of delay at described synchronous acquisition time point, described first acquisition node sends the second hardware trigger signal to described third party's node;
Described third party's acquisition node receives described second hardware trigger signal, carries out data acquisition.
2., based on a synchronisation of nodes system for hardware trigger sampling, it is characterized in that, comprise clock source, radio network gateway, control terminal, the first acquisition node and third party's acquisition node;
Wherein, radio network gateway is connected with described clock source and control terminal respectively, and radio network gateway and described clock source time synchronized; Multiple first acquisition node of each radio network gateway wireless connections, each described first acquisition node and this radio network gateway time synchronized; Described third party's acquisition node is connected with the first acquisition node, described third party's acquisition node and described radio network gateway time irreversibility;
Described third party's acquisition node comprises hardware trigger sampling module, and described hardware trigger sampling module is used for when receiving the first hardware trigger signal or the laggard row data acquisition of the second hardware trigger signal;
Described control terminal is used for sending to described first acquisition node the acquisition instructions comprising synchronous acquisition time point by radio network gateway;
Described first acquisition node comprises hardware trigger signal transmitting unit and control unit; Described hardware trigger signal transmitting unit is used for sending the first hardware trigger signal to third party's acquisition node; Described control unit for recording the time of delay from sending between data that described first hardware trigger signal to hardware trigger sampling module collects, and for described synchronous acquisition time point in advance the time point of described time of delay control described hardware trigger signal transmitting unit and send the second hardware trigger signal.
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| CN111181711A (en) * | 2020-01-03 | 2020-05-19 | 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 |
| CN111224734A (en) * | 2020-04-16 | 2020-06-02 | 成都坤恒顺维科技股份有限公司 | Synchronization system for large-scale acquisition array |
| CN111510876A (en) * | 2020-04-01 | 2020-08-07 | 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 |
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