CN105974836A - Bus monitoring host data acquisition method and bus monitoring host data acquisition system - Google Patents
Bus monitoring host data acquisition method and bus monitoring host data acquisition system Download PDFInfo
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- CN105974836A CN105974836A CN201610278336.3A CN201610278336A CN105974836A CN 105974836 A CN105974836 A CN 105974836A CN 201610278336 A CN201610278336 A CN 201610278336A CN 105974836 A CN105974836 A CN 105974836A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/14—Plc safety
- G05B2219/14006—Safety, monitoring in general
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Abstract
The present invention relates to a bus monitoring host data acquisition method and a bus monitoring host data acquisition system. The method includes the following steps that: data transmission, memory buffering and local storage are carried out on acquired data concurrency; network state monitoring is carried out in the processes of data transmission, memory buffering and local storage; when a network connection is abnormal, network state monitoring is carried out continuously until the network connection returns to normal; if the memory capacity of a monitoring host can satisfy a requirement for complete storage of data acquired in a network anomaly period, data stored in the memory of the monitoring host in the network anomaly period are transmitted supplementarily; and if the memory capacity of the monitoring host cannot satisfy the requirement for complete storage of the data acquired in the network anomaly period, data stored in a local large-capacity memory in the network anomaly period are transmitted supplementarily. The system includes a main control unit as well as a data acquisition module, a data storage module, a data transmission module, a data supplementary transmission module and a communication module which are connected with the main control unit. With the method and system of the invention adopted, it can be ensured that data will not be lost in a network outage situation, and the reliability of the monitoring host can be greatly increased.
Description
Technical field
The present invention relates to passenger vehicle monitoring field, be specifically related to a kind of passenger vehicle monitoring host computer collecting method and system.
Background technology
Existing long-range monitoring host computer, mainly transmits data by wireless communication mode, it is possible to by wireless network to vehicle-mounted
Terminal is controlled, it is achieved mobile vehicle and the bidirectional data transfers of Surveillance center, completes travel condition of vehicle, safe shape
State, the monitoring of state of the art.Its monitoring limited reliability affects in network communication quality, bandwidth etc., and communication efficiency is low, can
, communication cost low by property remains high, frequency acquisition is the highest, and availability is limited, can not meet far away integral new-energy passenger safety
Operation demand.
Data are not compressed by existing monitoring host computer, and so storage data redundancy is big, and availability is low, costly, are difficult to
Realizing storing full car data throughout one's life, data transmission cost is the highest, and it is slow to there is transmission speed, and data redudancy is big
Problem；Although there being equipment component (such as the patent documentation of Patent No. CN 204241891) to achieve local storage function,
But the most do not store forwarding capability, there is no the double storage functions of internal memory+locally stored yet, single storage can take a large amount of internal memory/
Caching, therefore mend transfer efficiency ratio relatively low, network off and in the case of monitoring host computer internal memory can be caused to overflow, not
Data can be efficiently accomplished and mend energy of passing on Gong.
Integral new-energy passenger control panel is the most at present, and frequency acquisition is restricted by bandwidth and flow, and switching value is adopted under normal circumstances
Taking displacement to upload, analog quantity uses the cycle to upload.Switching value uses continual real-time monitoring, wastes a large amount of flow and cost；
The analog quantity cycle uploads, inadequate owing to gathering frequency, is often worth the highest.Bicycle data are few, are not compressed, and do not carry out
Car load data store all the life.Channel based on mobile network no matter from the bottom of efficiency of transmission, the reason such as price height, unstable networks,
It is difficult to ensure that data integrity and reliability.
Summary of the invention
The invention provides a kind of passenger vehicle monitoring host computer collecting method and system, to solve existing monitoring host computer data acquisition
Although diversity method ensure that integrity and the reliability uploading data, but the problem that efficiency of transmission is the highest.
For solving above-mentioned technical problem, the passenger vehicle monitoring host computer collecting method of the present invention includes: to the data collected also
Send out data transmission, memory buffer and the locally stored process of carrying out, carry out Network Expert Systems in this process simultaneously, work as network
When connecting abnormal, continue to monitor network state, when network connection recovers normal, if monitoring host computer memory size disclosure satisfy that net
The data volume full storage that network abnormal period gathers, the benefit biography Network Abnormal period is stored in the data in monitoring host computer internal memory, no
Then, the benefit biography Network Abnormal period is stored in the data in local mass storage.
To Real-time Collection to data carry out based on parts, acquisition time, longitude and latitude classified compression after be transmitted again,
Internal memory and locally stored.
Detect whether in real time to receive data transfer instruction, according to data transfer instruction, would be required to transmission when network is normal
Data send to background server, and data transfer instruction described in described data transfer instruction is adopted in including the requirement transmission setting time
Collect to data, collection set the data in place or the data setting passenger vehicle parts collected.
The data collected include CAN data, GPS location data, acquisition time data and passenger vehicle component number evidence.
The data being stored in monitoring host computer internal memory and local mass storage are carried out CRC check, rejects the number of mistake
According to.
The passenger vehicle monitoring host computer data collecting system of the present invention includes main control unit and the data acquisition module being connected with main control unit
Block, data memory module, data transmission blocks, data mend transmission module and communication module, and data acquisition module is for adopting in real time
Set-off car data；Data memory module, for passenger vehicle data being stored in monitoring host computer internal memory, is deposited at local Large Copacity simultaneously
Carrying out data backup in reservoir, data transmission blocks is for sending the data collected in real time；Described data are mended transmission module and are used for
Detection network connection state is the most normal, and when Network Abnormal, the benefit biography Network Abnormal period is stored in monitoring host computer internal memory or this locality
Data in mass storage.
This system also includes the data compressing module being connected with main control unit, this module for the data collected are carried out based on
Parts, acquisition time, the classified compression of longitude and latitude.
This system also includes data transfer command detection module, for detecting whether to receive data transfer instruction in real time, according to
Data transfer instruction, notice data transmission blocks sends corresponding data to background server
This system also includes CRC check module, for being stored in monitoring host computer internal memory and local mass storage
Data carry out CRC check, rejecting abnormalities data.
Described communication module is GPRS transmission module, WIFI module or 3G/4G communication module, for by CAN number
It is transferred to background system according to GPS location data.
Beneficial effects of the present invention: data, when collecting data, are directly transmitted by the method for the present invention, and carry out simultaneously
Monitoring host computer memory buffer and local storage collaborative storage data, it is achieved double copies function, when network link exception, by
Back up in local storage and internal memory in data, so, once network recovery is normal, can be mended by Backup Data and reach backstage
Server.Forwarded by immediate data, the mechanism of biography is mended in suspension, on the one hand can ensure that in the preferable situation of network communication quality
Lower direct raising data transmission efficiency that data are sent, another aspect can ensure not lose data under offline condition,
Considerably increase the reliability of monitoring host computer.The present invention, by locally stored, by high-frequency data storage this locality, can solve prison
Control host data frequency acquisition is low, the problem that data retention over time is short, facilitates vehicle problem analysis and research.Further, this
Bright method is the transmission of Real-time Collection when network is normal, and this is different from periodicity collection of the prior art and transmission, permissible
Improve the efficiency of transmission of data, and improve the utilization rate of transmission belt passage.
Before data store, first carry out classifying and compressing, processed by compression, car load data can be stored in one very
In little storage, reduce storage and communication transfer cost, data acquisition frequency can be improved in the case of transmitting same data.
The present invention also can receive the data transfer command that backstage is assigned, and responds data transfer command, would be required to transmission
Data send to background server, improve the intellectuality of monitoring host computer data collecting system.
Compression-Store and forword-benefit is passed an integrated reliable equipment by the system of the present invention, and concurrently carries out each action,
Complete to monitor reliable data transmission, it is ensured that the high availability of monitoring host computer data.
Accompanying drawing explanation
Fig. 1 is passenger vehicle monitoring host computer collecting method flow chart；
Fig. 2 is that passenger vehicle monitoring host computer number hardware realizes block diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical scheme is further described in detail.
Passenger vehicle monitoring host computer collecting method embodiment
The method of the present embodiment includes: real-time data collection, and the Data Concurrent collected is carried out data transmission, internal memory delays
Punching and the process backed up in local mass storage；Meanwhile, carry out Network Expert Systems in real time, when network connects normal,
Send the data collected in real time；When network connects abnormal, continue to monitor network state, when network connection recovers normal,
If monitoring host computer memory size disclosure satisfy that the data volume full storage that the Network Abnormal period gathers, mend and pass the Network Abnormal period and deposit
Storage data in monitoring host computer internal memory, otherwise, the benefit biography Network Abnormal period is stored in the data in local mass storage.
As it is shown in figure 1, the data on monitoring host computer data acquisition module Real-time Collection CAN, the data that simultaneously will collect
Memory buffer, transmission and local mass storage storage, and detection network is the most abnormal the most in real time, when network is normal,
By Real-time Collection to data send to monitoring backstage；If Network Abnormal, keep long connection status, continue to monitor network-like
State, the data now collected cache in monitoring host computer internal memory, and back up in local mass storage, when network leads to
Letter link-recovery is normal, forwards the data collected in real time, and if monitoring host computer memory size disclosure satisfy that the Network Abnormal period
The data volume full storage gathered, i.e. the time period of Network Abnormal is shorter, and what the data collected during this period can be complete deposits
Storage is in monitoring host computer internal memory, then monitoring host computer internal memory disclosure satisfy that benefit biography condition, just by the data in monitoring host computer internal memory
It is forwarded to background server, and by the data deletion of transmission success；If monitoring host computer memory size can not meet Network Abnormal
The data volume full storage that period gathers, i.e. Chief Web Officer time interrupt, and the memory capacity of internal memory can not meet abnormal period number
Storage completely according to amount, then the data of collection will circulate storage in internal memory, owing to internal memory overflows, causes memory storage
Data imperfect, be unsatisfactory for mending biography condition, and the capacity of local mass storage disclosure satisfy that more greatly benefit biography condition, institute
It is stored in the data in local mass storage to background server with the benefit biography Network Abnormal period.
After in the present embodiment, monitoring host computer collects data, no matter how network state is directly transmitted, and so can ensure that
The high efficiency that in the case of network state is preferable, data transmit, owing to having carried out data storage and network in data while sending
Detection process, once finds Network Abnormal, can carry out mending biography, therefore, also ensure that the stability of data.
Further, in order to reduce taking up room of data, the present embodiment can first pass through compression algorithm to the data collected
It is compressed, particularly as follows: the data collected are carried out based on parts, acquisition time, the classified compression of longitude and latitude.Pressure
Data after contracting divide two parts, and according to sequencing and priority, portion is saved in local mass storage, and another part is put
In monitoring host computer internal memory.Processed by compression, car load data can be stored in a storage the least, can reduce
Data take up room, it is simple to network transmits, and reduce storage and communication transfer cost, can in the case of transmitting same data
To improve data acquisition frequency；The data collected include that CAN data, GPS position data, acquisition time data
And passenger vehicle component number evidence.
In data transmission, storing process, can detect whether in real time to receive data transfer instruction, according to data transfer instruction,
The data that would be required to transmission when network is normal send to background server, and wherein, described data transfer instruction includes that requirement passes
The data that collect in the defeated setting time, the data setting place of collection or the data setting passenger vehicle parts collected.
Use store-and-forward mechanism: major advantage is good reliability, because it is first stored in monitoring the Frame of input port
In host caches, then carry out crc check.If detecting, this frame goes wrong, then abandon this frame, otherwise take out this frame
Destination address, obtain output port by searching mac address table, then transfer Frame；And store forwarding exchange
Mode also supports the conversion between the port of different speed, facilitates the agreement between high-speed port and low-speed port to work.Storage
Retransmission technique requires monitoring host computer determines how to forward, directly forward, be at monitoring equipment after receiving entire packet again
Just have begun to before receiving whole frame forward data.But, if monitoring host computer is receiving the most completely and is checking data
Just having had begun to data forwarding before the correctness of bag, so in the environment of communication quality is the highest, exchange opportunity forwards institute
Some complete data packet and wrong data bag, this actually brings many rubbish communication bags to whole network.Therefore, directly
Connect retransmission technique be only applicable to network link quality preferably, the less network environment of wrong data bag, but reliability is low.
And the method for the present invention has taken into account direct forwarding and storage forwards, on the one hand can ensure that communication efficiency, on the other hand can
To ensure that data can gather in the case of network communication quality is the highest, under offline condition, ensure that data are not lost, significantly
Add the reliability of monitoring host computer；By locally stored, by high-frequency data storage this locality, it is possible to the record lifelong data of car load,
Complete to assist internal memory to complete to mend biography work under long-time offline condition, it is possible to solve monitoring host computer data acquiring frequency low,
The problem that data retention over time is short, facilitates vehicle problem analysis and research.
Passenger vehicle monitoring host computer data collecting system embodiment
The system of the present embodiment includes main control unit and the data acquisition module being connected with main control unit, data memory module, number
Mending transmission module and communication module according to sending module, data, data acquisition module is used for Real-time Collection passenger vehicle data；Data store
Module, for passenger vehicle data being stored in monitoring host computer internal memory, carries out data backup in local mass storage simultaneously,
It is the most normal that data transmission blocks is used for detecting network connection state, sends data to background server when network is normal；Institute
State data and mend transmission module for the data backed up during Network Abnormal in monitoring host computer internal memory or local mass storage being uploaded
To background server.
This system also includes the data compressing module being connected with main control unit, this module for the data collected are carried out based on
Parts, acquisition time, the classified compression of longitude and latitude.
This system also includes data transfer command detection module, for detecting whether to receive data transfer instruction in real time, according to
Data transfer instruction, notice data transmission blocks sends corresponding data to background server
As in figure 2 it is shown, data acquisition module, data memory module, data forwarding module and data are mended by the present embodiment passes mould
Block is combined by certain mechanism, reduces data space and improves the difficult ability of combating a natural disaster of data simultaneously, it is achieved monitoring host computer data
Transmitting.Passenger vehicle monitoring host computer hardware realizes including the CAN data acquisition that main control unit MCU and described MCU is connected
Collection module, data compressing module, data memory module, data forwarding module, data benefit transmission module and locally stored module,
The communication module that also includes being supported with existing mobile network's technology, Network Interface Module, power module, CAN data acquisition
Module, GPS locating module, alarm module, state display module.Described power module is used for powering, described CAN mould
Block obtains vehicle information by CAN, after acquisition information, association message is divided into two parts, and a part sends to report
Alert module, when producing catastrophe failure, produces different buzzing, reminds human pilot, and is entered by status panel difference flicker etc.
Row prompting.Another part data deliver to compression module in real time, and compression module, according to compression algorithm, sorts data into compression,
A data part after compression exist locally stored in, be used for do data recover and research, another part data put into forwarding team
Row forward, after network is normal and receives data transfer command, forwarding queue will require the data of transmission first
It is stored in internal memory, is then sent to background server by wireless network, and by the data deletion of transmission success.Work as Network Abnormal,
Data will be stored in internal memory and by periodic cover, it is ensured that data are up-to-date, until network recovery is normal, start transmission
Real time data in internal memory and Local backup data.When without network, complete is stored in local hard drive by data, so that it is guaranteed that
Data are not lost.
Monitoring host computer also includes GPS module, for vehicle location, and location data is transferred to compression module, is then stored to
Locally stored, and forward/mend transmission module by storage in the lump with CAN data.It is transferred to server eventually through communication module.
It is presented above specific embodiment, but the present invention is not limited to described embodiment.The basic think of of the present invention
Road is above-mentioned basic scheme, for those of ordinary skill in the art, according to the teachings of the present invention, designs various deformation
Model, formula, parameter be not required to spend creative work.The most right
Change that embodiment is carried out, revise, replace and modification still falls within protection scope of the present invention.
Claims (10)
1. a passenger vehicle monitoring host computer collecting method, it is characterized in that, the method is: the Data Concurrent collected is carried out data transmission, memory buffer and locally stored process, carry out Network Expert Systems in this process simultaneously, when network connects abnormal, continue to monitor network state, when network connection recovers normal, if monitoring host computer memory size disclosure satisfy that the data volume full storage that the Network Abnormal period gathers, the benefit biography Network Abnormal period is stored in the data in monitoring host computer internal memory, otherwise, the benefit biography Network Abnormal period is stored in the data in local mass storage.
Passenger vehicle monitoring host computer collecting method the most according to claim 1, it is characterised in that to Real-time Collection to data carry out based on parts, acquisition time, longitude and latitude classified compression after be transmitted again, internal memory and locally stored.
Passenger vehicle monitoring host computer collecting method the most according to claim 2, it is characterized in that, detect whether in real time to receive data transfer instruction, according to data transfer instruction, the data that would be required to transmission when network is normal send to background server, data that data transfer instruction described in described data transfer instruction collects in including the requirement transmission setting time, the data setting place of collection or the data setting passenger vehicle parts collected.
Passenger vehicle monitoring host computer collecting method the most according to claim 1, it is characterised in that the data collected include CAN data, GPS location data, acquisition time data and passenger vehicle component number evidence.
5. according to the arbitrary described passenger vehicle monitoring host computer collecting method of claim 1-4, it is characterised in that the data being stored in monitoring host computer internal memory and local mass storage are carried out CRC check, rejects the data of mistake.
6. a passenger vehicle monitoring host computer data collecting system, it is characterized in that, this system includes main control unit and the data acquisition module being connected with main control unit, data memory module, data transmission blocks, data benefit transmission module and communication module, and data acquisition module is used for Real-time Collection passenger vehicle data；Data memory module, for passenger vehicle data being stored in monitoring host computer internal memory, carries out data backup in local mass storage simultaneously, and data transmission blocks is for sending the data collected in real time；Described data are mended transmission module and are used for detecting network connection state the most normally, and when Network Abnormal, the benefit biography Network Abnormal period is stored in the data in monitoring host computer internal memory or local mass storage.
Passenger vehicle monitoring host computer data collecting system the most according to claim 6, it is characterized in that, this system also includes the data compressing module being connected with main control unit, and this module is for carrying out the data collected based on parts, acquisition time, the classified compression of longitude and latitude.
Passenger vehicle monitoring host computer data collecting system the most according to claim 7, it is characterized in that, this system also includes data transfer command detection module, detect whether to receive data transfer instruction in real time, according to data transfer instruction, notice data transmission blocks sends corresponding data to background server.
The most according to claim 6, passenger vehicle monitoring host computer data collecting system, it is characterised in that this system also includes CRC check module, for carrying out CRC check, rejecting abnormalities data to the data being stored in monitoring host computer internal memory and local mass storage.
10., according to the arbitrary described passenger vehicle monitoring host computer data collecting system of claim 6-9, it is characterised in that described communication module is GPRS transmission module, WIFI module or 3G/4G communication module, it is transferred to background system for CAN data and GPS are positioned data.
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