CN103957551A - Communication state real-time monitoring method in automatic meteorological station - Google Patents
Communication state real-time monitoring method in automatic meteorological station Download PDFInfo
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Abstract
The invention relates to a communication state real-time monitoring method in an automatic meteorological station. The method comprises the following steps that firstly, a center station receives a heartbeat packet within the set time; secondly, when judging that a physical communication module works normally, the center station detects the parameters of the LAC cell value/CI section value of the heartbeat packet; thirdly, when judging that a current base station is not changed, the center station detects the parameter about whether GPRS module in the heartbeat packet is normal or not, the parameter about whether an SIM card is normal or not, and the parameter about whether PPP dialing is successful or not; fourthly, the center station detects parameters of a connection channel of the heartbeat packet; fifthly, the center station detects the current value of the intensity of the CSQ signal of the heartbeat packet and determines the level of the intensity of the current base station signal according to the comparison of the current value of the CSQ signal intensity with the set value. According to the communication state real-time monitoring method, the communication states can be effectively monitored in real time, the problems that the datagram rate is low due to the fault of a communication link can be reduced, and the reliability of data communication can be improved.
Description
Technical field
The present invention relates to a kind of method for supervising, communications status method for real-time monitoring in especially a kind of automatic weather station, belongs to the technical field that automatic weather station communications status is monitored.
Background technology
At present, automatic weather station system comprise for gather meteorological data and by described meteorological data outwards transmission base station, for base station data is received, the central station of analyzing and processing and connect the bridger of described central station and base station.In the running of base station, except oneself state, the quality of communications status has determined that can central station receive data in time equally.Therefore, user is necessary to grasp in real time the situation of current communication link.
And for the communication link that carries out transfer of data for use GPRS, if can understand in real time current communications status, as base station service condition, base station signal strength, signal stabilization situation etc., and on this basis, central station can offer the prediction of user to possible breakdown, so, user just can make a response to contingent communication link problem in time.With this, can reduce to a certain extent the data of bringing because of communication link fails and arrive the problem that report rate reduces, improve the reliability of automatic Weather Station data communication.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, communications status method for real-time monitoring in a kind of automatic weather station is provided, it is easy to operate, can carry out monitoring effectively in real time to communications status, can reduce the problem of bringing datagram rate to reduce because of communication link fails, improve the reliability of data communication.
According to technical scheme provided by the invention, communications status method for real-time monitoring in described automatic weather station, comprises base station, central station and connects the bridger of described base station and central station; Base station comprises data acquisition unit and physical communications module, and physical communications module can push heartbeat packet to central station by bridger; Described communications status implementing monitoring method comprises the steps:
When a, central station are received described heartbeat packet in setting-up time, central station can judge that in base station, physical communications module is normal work, otherwise judges that physical communications module is in abnormal work state;
B, central station judge that physical communications module is in the time of normal work, central station detects the parameter of heartbeat packet Nei LAC community value/CI sector value, in the time that the parameter of described LAC community value/CI sector value is identical with previous moment, the base station that central station judgement is used is unchanged, otherwise the base station of use changes;
C, judge that at central station the base station using is when unchanged, whether successfully central station detects the whether normal parameter of GPRS module, the whether normal parameter of SIM card, the PPP dialing parameter in heartbeat packet; When above-mentioned GPRS module whether normal parameter, the whether normal parameter of SIM card or PPP dialing whether successfully have one in parameter when abnormal, central station judges that communications status is abnormal, and locates anomaly parameter, otherwise central station judges that communications status is normal;
D, when central station is according to whether normal parameter, the whether normal parameter of SIM card and the PPP dialing when successfully whether parameter judges that communications status is normal of GPRS module, central station detects the interface channel parameter of heartbeat packet, when interface channel parameter is while being abnormal, central station output communication abnormal state, and locate described anomaly parameter, otherwise central station judges that communications status is normal;
E, in the time that central station judges that according to interface channel parameter communications status is normal, central station detects the CSQ signal strength signal intensity currency of heartbeat packet, according to described CSQ signal strength signal intensity currency and setting threshold comparison, and the strength grade of definite current base station signal.
Described central station utilizes neural net method to carry out failure diagnosis to communication link according to the heartbeat packet receiving.
Described physical communications module comprises GPRS module, and physical communications module is connected with data acquisition unit by RS232 serial ports.Between described base station and bridger, adopt UDP to communicate by letter.
Advantage of the present invention: the heartbeat packet that central station pushes according to physical communications module is monitored the communications status of communication link, and by neural net method, the communication failure of communication link is diagnosed, easy to operate, can carry out monitoring effectively in real time to communications status, can reduce the problem of bringing datagram rate to reduce because of communication link fails, improve the reliability of data communication.
Brief description of the drawings
Fig. 1 is workflow diagram of the present invention.
Fig. 2 is the flow chart that central station of the present invention judges.
Fig. 3 is that the present invention utilizes neural net method to carry out the flow chart of failure diagnosis.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
At present, the normal UDP communication mode adopting of communicating by letter between base station and bridger, specifically realizes by GP configuring RS module, sets up the communication link between base station and central station by bridger.Physical communications module in base station comprises GPRS module, in order to make the current communication link of the real-time grasp of user whether unimpeded, physical communications module in base station is responsible for to central station active push packet, referred to as " heartbeat packet ", the major function of heartbeat packet is the state of notice central station in current time GPRS module.
Meanwhile, in the heartbeat packet of GPRS module, provide equally the information relevant to the communication of physical communications module, comprise GPRS module whether normal, whether SIM card normal, whether whether success of PPP dialing, csq signal strength signal intensity currency, passage are successfully established etc.
Can central station, by receiving in time the heartbeat packet of GPRS module, judge whether the physical communications module of current time normally works.For other states that obtain current communication link, need to obtain by manually sending order to collector.Key step is:
(1), GPRS module sends heartbeat packet by given time interval to bridger;
(2), bridger receives heartbeat packet, and sends to central station;
(3), central station receive heartbeat packet, push the promptness of coming by analyzing this heartbeat packet, judge whether GPRS module normally works at this very moment.
(4) if, user need to know the communications status of current time, need manually to send order by central station to data acquisition unit, obtain the state parameter of current communication link, as GPRS module whether normal, whether SIM card normal, whether whether success of PPP dialing, csq signal strength signal intensity currency, passage are successfully established, PPP line duration, passage line duration etc.
Central station, by analyzing the promptness of heartbeat packet, infers now whether physical communications module still normally works.But only rely on heartbeat packet, whether unimpededly can't describe current communications status completely.In addition, although user can, by manually sending order, obtain current GPRS module status parameter, this way does not meet the requirement of real time of communications status monitoring completely.
In such scheme, although user can understand current communications status by the parameter of returning, but only rely on this state parameter, can not make user grasp intuitively current communications status, for example current demand signal intensity level, user can be known the numerical value of signal strength signal intensity, does not represent that the current demand signal that just can grasp the representative of this numerical value is good or bad.Can not whether there is potential faults by clear grasp communication link.
Particularly, data acquisition unit, data acquisition unit is mainly responsible for the work of data acquisition and data storage aspect, and is born by physical communications module with the work of PERCOM peripheral communication.Data acquisition unit is connected by RS232 serial ports with GPRS module.
GPRS module, under at present the most frequently used UDP communication condition, bear with PERCOM peripheral communication work be generally the physical communications module that third party manufacturer provides, such as the product of grand electricity and Nuo Lang.This series products possesses the function from trend central station propelling data bag, referred to as " heartbeat packet ".The major function of heartbeat packet is the state of notice central station in current time physical communications module.Utilize it, central station can provide real-time communication monitoring information for user.Information category in heartbeat packet is various, but communication terminal number most importantly.This terminal number is used to unique expression physical communications module (or data acquisition unit), by the unique appointment of user.By its uniqueness feature, central station can create automatically with it the information of base station.
Bridger, it is the bridge that carries out exchanges data between base station and central station.Its major responsibility is the request of data sent of receiving center station piece and request is sent to remote data source; Receive the data of returning in remote data source and data are returned to central station.
After UDP bridger starts, by the UDP service port number of setting therein, in fact bridger has set up a UDP service end that can connect for UDP client.Base station is as UDP client, and by IP address and the UDP service port number of its inner setting, automatic addressing is connected to bridger.The port numbers that the UDP service port number of bridger inner setting is set with inside of base station must be consistent, otherwise equipment cannot navigate to bridger.Meanwhile, user also needs in local area network (LAN), to carry out in advance udp port mapping.Bridger is responsible for reception and the distribution of request of data and data response.
Central station and bridger communicate according to set agreement, and whether central station receives the GPRS module heartbeat packet that bridger sends, and heartbeat packet information is resolved, diagnose now GPRS module to interrupt.
Can receive on the basis of heartbeat packet, central station is pressed given time interval, sends request the order of GPRS module status parameter to bridger, and this order is sent to data acquisition unit by bridger, and data acquisition unit returns to the parameter of current GPRS module status.
As depicted in figs. 1 and 2, in order to carry out monitoring effectively in real time to communications status, can reduce the problem of bringing datagram rate to reduce because of communication link fails, improve the reliability of data communication, the present invention includes base station, central station and connect the bridger of described base station and central station; Base station comprises data acquisition unit and physical communications module, and physical communications module can push heartbeat packet to central station by bridger; Described communications status implementing monitoring method comprises the steps:
When a, central station are received described heartbeat packet in setting-up time, central station can judge that in base station, physical communications module is normal work, otherwise judges that physical communications module is in abnormal work state;
In the embodiment of the present invention, described setting-up time can be set according to service condition, receives heartbeat packet in setting-up time, can judge that physical communications module is normal work.
B, central station judge that physical communications module is in the time of normal work, central station detects the parameter of heartbeat packet Nei LAC community value/CI sector value, in the time that the parameter of described LAC community value/CI sector value is identical with previous moment, the base station that central station judgement is used is unchanged, otherwise the base station of use changes;
C, judge that at central station the base station using is when unchanged, whether successfully central station detects the whether normal parameter of GPRS module, the whether normal parameter of SIM card, the PPP dialing parameter in heartbeat packet; When above-mentioned GPRS module whether normal parameter, the whether normal parameter of SIM card or PPP dialing whether successfully have one in parameter when abnormal, central station judges that communications status is abnormal, and locates anomaly parameter, otherwise central station judges that communications status is normal;
D, when central station is according to whether normal parameter, the whether normal parameter of SIM card and the PPP dialing when successfully whether parameter judges that communications status is normal of GPRS module, central station detects the interface channel parameter of heartbeat packet, when interface channel parameter is while being abnormal, central station output communication abnormal state, and locate described anomaly parameter, otherwise central station judges that communications status is normal;
E, in the time that central station judges that according to interface channel parameter communications status is normal, central station detects the CSQ signal strength signal intensity currency of heartbeat packet, according to described CSQ signal strength signal intensity currency and setting threshold comparison, and the strength grade of definite current base station signal.
Sector, physical concept, is exactly the antenna that there are several directions this base station, generally has omni-base station: can be understood as signal 360 degree transmittings, is exactly a sector.Directional base station, signal is to the transmitting of certain direction, and around 360 degree directions cover as required, are generally divided into 3 sectors, under individual cases, have 2 or be greater than the sector of 3.
Community, logical concept, a corresponding sector, next community of ordinary circumstance, but sometimes also not necessarily, often have now community to merge, and Yi Ge community is merged in multiple sectors, and the concept of community is generally used to system, is used for carrying out setting parameter, control etc.
CSQ signal strength values, radiofrequency signal is normal while being " 0～31,00 ", but can communicate while only having " 8～31,00 ".In the time that being " 99,99 ", signal represents no signal.Radio-frequency (RF) signal strength is divided into 32 grades (0～31), and 31 grades is that signal is the strongest, and in order to ensure system stability work, signal strength signal intensity is advised more than 10 grades.
Further, described central station utilizes neural net method to carry out failure diagnosis to communication link according to the heartbeat packet receiving.
Central station calculates the rate of change of the csq signal strength signal intensity in a period of time, and according to the threshold range of setting, division signals is stablized grade, informs that in the current period of user, whether signal is stable.In informing the above-mentioned state information of user, central station provides communications status fault diagnosis result.The threshold range of described setting can arrange according to situations such as operational environments, specifically repeats no more.
GPRS module status parameter is single, independent, therefore this parameter is processed, is processed.By the preliminary treatment of GPRS module status initial data process, feature extraction to collecting, the characteristic vector that generates representative communication different conditions, condition monitoring and diagnostic module fuzzy clustering, neural net method communicate prediction, identification and the judgement of state.
Neural network algorithm adopts distributed treatment, associative memory, create training storehouse with the organizational form of study, set up self adaptation dynamic mapping model, can carry out information identification to the communication link of long-time running, without any need for priori, thereby can be used for judging the state variation that current communication link causes because of fault.The general principle of utilizing neural net to carry out failure diagnosis is the input using GPRS module status parameter as neural net, and diagnostic result is as the output of neural net.
In specific implementation process, first utilize existing failure symptom and diagnostic result to carry out off-line training to neural net, make neural net pass through the cause and effect mapping relations between one group of data accumulating failure symptom and diagnostic result, then the input using the new failure symptom collecting as neural net, network after utilization training is to diagnosing malfunction, obtaining specifically differentiation process of corresponding diagnostic result is after having selected correct characteristic vector and signature analysis, contact with the physical background of monitoring and diagnosis object, obtain suitable decision rule according to its specific rule, judge that whether monitored object is normal, if there is abnormal (malfunction), the problems such as what fault.
As shown in Figure 3, neural net is divided into off-line training and e-learning two parts.
1), off-line training: the state parameter of statistical history and fail result are carried out off-line training, set up the cause and effect mapping relations of initialized status flag and failure diagnosis.
2), e-learning: in system running, input using original GPRS module status parameter as neural net, with the network after training, its parameter is carried out to failure diagnosis, obtain diagnostic result, again in conjunction with real physical background, set up suitable decision rule, judge whether normal, failure cause etc. of communication link.
Specific algorithm process is:
I), input layer, data preliminary treatment, characterization, normalized parameter.
x＝(x
1,x
2,…,x
n)；
Wherein, x
ii index parameter of an object, a for example object communication process in other words conj.or perhaps, parameter comprises that whether GPRS module is normal, whether SIM card is normal, and whether successfully etc., the state of some parameter only has 0,1 for PPP dialing, namely normal and undesired two states, some parameter numeric representation, such as line duration and signal strength signal intensity, so need to carry out preliminary treatment, characterization and normalization.N represents that GPRS module pushes the number of parameters of heartbeat packet;
Ii), intermediate layer, the study of input message, processing.
y
i＝f
1(wx)
Wherein, x is the parameter after normalized, and W is weight vectors W=(w
1, w
2..., w
n); f
1for activation primitive---linear function, weight vectors, by by off-line training and continuous e-learning, carries out Function Fitting and determines weight coefficient.In the embodiment of the present invention, activation primitive f
1the linear function adopting can be
f
1(t)＝mt+n
In formula, m is equivalent to the weight coefficient w of intermediate layer and input layer, and n is the constant that matching obtains, the independent variable that t is linear function.。
Iii), output layer, artificially communication link fails is divided into N class result according to historical data, F encodes
1, F
2..., F
n, i class fault is output as so:
F
i＝f
2(f1(wx)W)
Wherein, W is weight vectors W=(W
1, W
2..., W
n); f
2for activation primitive---threshold function table, train the expression of output layer to intermediate layer, determine weight coefficient W
1, W
2..., W
n.In the embodiment of the present invention, activation primitive f
2the threshold function table adopting is:
Wherein, threshold value η is an auto-adaptive parameter, changes along with different classes of fault.For a certain class fault, its threshold value η determines its numerical value by the training of intermediate layer and output layer; λ is the independent variable activating while also going up f2 employing threshold function table.
In the embodiment of the present invention, central station carries out after failure diagnosis the communications status of communication link according to neural net method, can fault diagnosis result be exported by the much information such as sound, picture.
The heartbeat packet that central station of the present invention pushes according to physical communications module is monitored the communications status of communication link, and by neural net method, the communication failure of communication link is diagnosed, easy to operate, can carry out monitoring effectively in real time to communications status, can reduce the problem of bringing datagram rate to reduce because of communication link fails, improve the reliability of data communication.
Claims (4)
1. a communications status method for real-time monitoring in automatic weather station, comprises base station, central station and connects the bridger of described base station and central station; Base station comprises data acquisition unit and physical communications module, and physical communications module can push heartbeat packet to central station by bridger; It is characterized in that, described communications status implementing monitoring method comprises the steps:
(a), central station is while receiving described heartbeat packet in setting-up time, central station can judge that in base station, physical communications module is normal work, otherwise judges that physical communications module is in abnormal work state;
(b), central station judges that physical communications module is in the time of normal work, central station detects the parameter of heartbeat packet Nei LAC community value/CI sector value, in the time that the parameter of described LAC community value/CI sector value is identical with previous moment, the base station that central station judgement is used is unchanged, otherwise the base station of use changes;
(c), judge that at central station the base station using is when unchanged, whether successfully central station detects the whether normal parameter of GPRS module, the whether normal parameter of SIM card, the PPP dialing parameter in heartbeat packet; When above-mentioned GPRS module whether normal parameter, the whether normal parameter of SIM card or PPP dialing whether successfully have one in parameter when abnormal, central station judges that communications status is abnormal, and locates anomaly parameter, otherwise central station judges that communications status is normal;
(d), in the time that central station judges that according to the whether normal parameter of GPRS module, the whether normal parameter of SIM card and the whether successful parameter of PPP dialing communications status is normal, central station detects the interface channel parameter of heartbeat packet, when interface channel parameter is while being abnormal, central station output communication abnormal state, and locate described anomaly parameter, otherwise central station judges that communications status is normal;
(e), in the time that central station judges that according to interface channel parameter communications status is normal, central station detects the CSQ signal strength signal intensity currency of heartbeat packet, according to described CSQ signal strength signal intensity currency and setting threshold comparison, and the strength grade of definite current base station signal.
2. communications status method for real-time monitoring in automatic weather station according to claim 1, is characterized in that: described central station utilizes neural net method to carry out failure diagnosis to communication link according to the heartbeat packet receiving.
3. communications status method for real-time monitoring in automatic weather station according to claim 1, is characterized in that: described physical communications module comprises GPRS module, and physical communications module is connected with data acquisition unit by RS232 serial ports.
4. communications status method for real-time monitoring in automatic weather station according to claim 1, is characterized in that: between described base station and bridger, adopt UDP to communicate by letter.
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Effective date of registration: 20191219 Address after: 214000 28 Weiming Road, Binhu District, Wuxi City, Jiangsu Province Patentee after: Aerospace new weather Technology Co., Ltd Address before: Jinxi road Binhu District 214125 Jiangsu city of Wuxi province No. 100 Patentee before: Jiangsu Provincial Radio Inst Co., Ltd. |