CN105469582A - Tunnel pressure wave collection system and data collection method thereof - Google Patents
Tunnel pressure wave collection system and data collection method thereof Download PDFInfo
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- CN105469582A CN105469582A CN201610068691.8A CN201610068691A CN105469582A CN 105469582 A CN105469582 A CN 105469582A CN 201610068691 A CN201610068691 A CN 201610068691A CN 105469582 A CN105469582 A CN 105469582A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention aims at providing a tunnel pressure wave collection system which comprises a trigger device, a data collection node, a gateway control node, a cloud server and a PC. The trigger device is used for detecting whether a train runs into a tunnel or runs out of the tunnel. The cloud server is in wireless communication with the gateway control node. The PC is in wireless or wire connection with the cloud server. The data collection node comprises a second ZigBee module and an ARM data collection and storage module. The gateway control node comprises a third ZigBee module and a GPRS module. According to the technical scheme, the tunnel pressure wave collection system has the advantages that the whole system device is simplified; node capacity is high, and topological distance is long; data collection on user-defined trigger conditions can be achieved; the higher equivalent transmission bandwidth is obtained, the adaptability to the severe environment is high, and the cost is saved. The invention further aims at providing a data collection method. The whole data collection process is simplified and operation is convenient.
Description
Technical field
The present invention relates to technical field of transportation, be specifically related to a kind of acquisition system and collecting method thereof of air pressure wave in tunnel.
Background technology
In aerodynamics in tunnel test run test, air pressure wave in tunnel collection (namely gathering the barometric information in tunnel during High-speed Trains Passing Through Tunnel) is extremely important, air pressure wave in tunnel measure in test only need train through during special time in carry out high speed acquisition.At present, air pressure wave in tunnel collection mainly contains following several method:
1, utilize cable data acquisition system to gather: this kind of method has following defect: connect up numerous and diverse, power taking difficulty, need manually on duty, single test at substantial manpower and materials, are difficult to repeatedly revision test to obtain full and accurate data.
2, utilize wireless acquisition system collection, have following several at present:
Data acquisition system (DAS) based on ZigBee-network: although ZigBee technology has very strong networking capability, large-scale wireless sensor network can be formed, but message transmission rate is low, be mainly used in the long term monitoring that sampling rate requires very low slow change indicator, the specific occasion that sampling rate is higher cannot be applied to.Existing ZigBee-network cannot realize the 300sps ~ 500sps sampling rate required by air pressure wave in tunnel collection, can not meet the measurement demand of air pressure wave in tunnel.
Infrared, bluetooth and WiFi gather: this kind of system is mainly towards point-to-point transmission, bluetooth connection device is less than 8, WiFi connection device is less than 50 and networking structure is star topology, maximum topological scope is less than 300m, above three kinds of wireless solution node capacities are less, and networking capability is not enough to form the far away and wireless-transmission network that number of nodes is numerous of distribution distance.
Based on embedded technology data acquisition system (DAS): usually pass through the wireline interfaces such as serial ports, Ethernet, PCI by data upload to host computer, the signal of each measuring point place sensor also needs to be connected to data acquisition system (DAS) by cable, when the more standoff distance of measuring point is far away, being routed in can be more complicated loaded down with trivial details in the rugged surroundings such as tunnel, troubleshooting difficulty during the appearance fault such as open circuit, short circuit, the step-down of 220V civil power is that plate live potential source uses generally by adapter by power supply mode, and lowered in field environment is difficult to realize.
STORAGE MEASUREMENT TECHNIQUE: do not carry out networking between this kind of each measuring point of internal system, respective complete independently data acquisition and storage, needs after off-test from each acquisition node, to obtain data one by one, troublesome poeration when acquisition node number is numerous, is not easy to repeatedly revision test.
Therefore, design that a kind of apparatus structure is simplified, sampling rate is high and have high node capacity and long expand distance system and collecting method there is vital role.
Summary of the invention
The first object of the present invention is the acquisition system providing a kind of air pressure wave in tunnel, and concrete technical scheme is as follows:
An acquisition system for air pressure wave in tunnel, comprise the flip flop equipment sending Trigger message when vehicle sails tunnel into and rolls tunnel away from, the multiple data acquisition nodes be arranged in successively by tunnel portal to Way out on tunnel inner wall, be arranged on tunnel portal or outlet outside at least one policy control node, carry out the Cloud Server of wireless telecommunications with policy control node and carry out PC that is wireless or wired connection with described Cloud Server;
Described data acquisition node comprises the second ZigBee module be connected with described flip flop equipment and the ARM data acquisition be connected with described second ZigBee module and memory module;
Described policy control node comprises the 3rd ZigBee module be connected with described second ZigBee module and described flip flop equipment respectively and the GPRS module be connected with described 3rd ZigBee module and described Cloud Server respectively;
Or described data acquisition node comprises the second ZigBee module and the ARM data acquisition that is connected with described second ZigBee module and memory module; Described policy control node comprises the 3rd ZigBee module be connected with the second ZigBee module and the GPRS module be connected with described 3rd ZigBee module, described Cloud Server and described flip flop equipment respectively.
Preferred in above technical scheme, the processor chips of described second ZigBee module and described 3rd ZigBee module are CC2530 chip;
The processor chips of described ARM data acquisition and memory module are S3C2410 chip, it comprises and the ARM data acquisition module of described second ZigBee module both-way communication and the SD card with described ARM data acquisition module both-way communication, and the circuit connection of described SD card is SD pattern; Communication is carried out by Ethernet between described Cloud Server and described PC; For bidirectional wireless communication is connected between described second ZigBee module with described 3rd ZigBee module.
Preferred in above technical scheme, described flip flop equipment is the mobile phone with described GPRS module wireless connections.
Preferred in above technical scheme, described flip flop equipment comprises at least two trigger node be separately positioned on outside tunnel portal and outside tunnel exit;
Described trigger node comprises the first ZigBee module of being connected with described second ZigBee module and described 3rd ZigBee module respectively and is connected with described first ZigBee module and sails for detecting vehicle the detection part that tunnel and vehicle roll tunnel away from into;
The first ZigBee module between two described trigger node is interconnected.
Preferred in above technical scheme, the distance between a described trigger node and tunnel portal and the distance described in another between trigger node and tunnel exit are 100-200 rice; Multiple described data acquisition node equidistantly distributes, and the distance between adjacent two described data acquisition nodes is 20-100 rice;
The processor chips of described first ZigBee module are CC2530 chip;
Described detection part is that ultrasonic sensor or infrared receiving/transmission are to pipe.
Preferred in above technical scheme, the model of described ultrasonic sensor is KS103H;
The SCL pin of described ultrasonic sensor or the output switch parameter pin of described infrared tube are connected with the P0.1 pin IO of described first ZigBee module;
The K15 pin TXD0 of described ARM data acquisition and memory module is connected with the P0.2 pin RX of described second ZigBee module, and the K17 pin RXD0 of described ARM data acquisition and memory module is connected with the P0.3 pin TX of described second ZigBee module.
Apply technical scheme of the present invention, there is following beneficial effect:
1, the present invention only adopts mobile phone or two trigger node, multiple data acquisition node, at least one policy control node and Cloud Servers can realize the data acquisition of air pressure wave in tunnel, and log in Cloud Server by PC oneself and can obtain related data, whole system is apparatus simplified.
2, adopt multiple data acquisition node and multiple ZigBee module, reach higher node capacity and farther topology distance; By the composite design of trigger node and policy control node, the data acquisition under self-defined trigger condition can be realized.
3, the present invention is in order to increase topology distance, in tunnel, build line style network, the networking topology of employing is mesh topology, and the node type of each data acquisition node is router, the node type of policy control node is telegon, and the node type of trigger node is terminal.When 4 sent data to coordinator node with last router node simultaneously, telegon occurs receiving repeating data and loss of data phenomenon sometimes, and main cause is as follows: repeating data should be because telegon receives the identical data transmitted in the different path of two or more; Loss of data should be that the node owing to sending simultaneously is many, and telegon out of buffers causes, and when routing node, to increase event of data loss more serious.Therefore, the present invention adopts ARM data acquisition and memory module to carry out queuing up successively after compression processes uploading data to the data collected again, reduce the wireless data communications amount of ZigBee-network, obtain higher effective transmission bandwidth, improve the adaptability to severe network environment, decrease the flow of GPRS network remote transmission simultaneously, provide cost savings.
4, select Cloud Server as the receiving terminal of long-range sampled data, there is public network IP and can receive the data that GPRS network transmits with TCP send mode, any time all can receive data and never go offline, the computing machine connecting arbitrarily Internet all can extract data by Telnet Cloud Server, and there is the aftertreatment that powerful computing power facilitates data.
The second object of the present invention is the collecting method of the acquisition system providing a kind of above-mentioned air pressure wave in tunnel, specifically comprises the following steps:
Step one: the GPRS module in policy control node and the 3rd ZigBee module inside be attached thereto are arranged, when flip flop equipment sends information 0 to GPRS module, the 3rd ZigBee module receives data acquisition command; When flip flop equipment sends information 1 to GPRS module, the 3rd ZigBee module receives stopping data acquisition command;
Step 2: when vehicle sails tunnel into, flip flop equipment sends information 0 to the GPRS module in policy control node, transfer data to connected 3rd ZigBee module by serial ports after GPRS module in policy control node receives message, described 3rd ZigBee module sends data acquisition command to the second ZigBee module in all data acquisition nodes;
Step 3:
ARM data acquisition in each data acquisition node and memory module receive the laggard promoting the circulation of qi pressure data acquisition of data acquisition command by serial ports and are preserved by the corresponding data collected;
Step 4: when vehicle rolls tunnel away from, flip flop equipment sends information 1 to the GPRS module in policy control node; Transfer data to connected 3rd ZigBee module by serial ports after GPRS module in policy control node receives message, described 3rd ZigBee module sends to the second ZigBee module in all data acquisition nodes and stops data acquisition command;
Step 5: stop data acquisition after the ARM data acquisition in each data acquisition node and memory module receive stopping data acquisition command by serial ports;
Step 6: the 3rd ZigBee module in described policy control node sends uploading data order to the second ZigBee module in i-th data acquisition node, and wherein, i gets and is more than or equal to 1 and the natural number being less than the sum of total data acquisition node; After ARM data acquisition in i-th data acquisition node and memory module receive uploading data order by serial ports by the second ZigBee module of being connected with its serial ports by the data feedback that compressed to the 3rd ZigBee module in policy control node; Associated compression data are uploaded to Cloud Server by GPRS module by the 3rd ZigBee module in policy control node;
Step 7: get i=i+1, repeats step 6;
Step 8: user obtains associated compression data by PC from Cloud Server.
The third object of the present invention is the collecting method of the acquisition system providing another kind of above-mentioned air pressure wave in tunnel, specifically comprises the following steps:
Step one: the trigger mode that P0.1 pin in the first ZigBee module in two described trigger node interrupts all is set as rising edge trigger mode;
The detection part being arranged in the trigger node outside tunnel portal detects that vehicle feeds back to connected described first ZigBee module when sailing tunnel into;
Step 2: described first ZigBee module being arranged in the trigger node outside tunnel portal sends data acquisition command to the second ZigBee module of all data acquisition nodes and the first ZigBee module being arranged in the trigger node outside tunnel exit;
Step 3: after the first ZigBee module being arranged in the trigger node outside tunnel exit receives data acquisition command, its trigger mode becomes negative edge trigger mode from rising edge trigger mode;
ARM data acquisition in each data acquisition node and memory module receive the laggard promoting the circulation of qi pressure data acquisition of data acquisition command by serial ports and are preserved by the corresponding data collected;
Step 4: when the detection part being arranged in the trigger node outside tunnel exit detects that vehicle rolls tunnel away from, described first ZigBee module being arranged in the trigger node outside tunnel exit sends and stops data acquisition command to the 3rd ZigBee module of the second ZigBee module of each data acquisition node and policy control node; The trigger mode being arranged in the first ZigBee module of the trigger node outside tunnel exit becomes rising edge trigger mode from negative edge trigger mode; Data acquisition is stopped after ARM data acquisition in each data acquisition node and memory module receive stopping data acquisition command by serial ports;
Step 5: the 3rd ZigBee module in described policy control node receives stopping data acquisition command, then carry out next step;
Step 6: the 3rd ZigBee module in described policy control node sends uploading data order to the second ZigBee module in i-th data acquisition node, and wherein, i gets and is more than or equal to 1 and the natural number being less than the sum of total data acquisition node; After ARM data acquisition in i-th data acquisition node and memory module receive uploading data order by serial ports by the second ZigBee module of being connected with its serial ports by the data feedback that compressed to the 3rd ZigBee module in policy control node; Associated compression data are uploaded to Cloud Server by GPRS module by the 3rd ZigBee module in policy control node;
Step 7: get i=i+1, repeats step 6;
Step 8: user obtains associated compression data by PC from Cloud Server.
Preferred in above technical scheme, the specific works process being arranged in described first ZigBee module of the trigger node outside tunnel portal comprises the following steps:
Step 1-1, initialization; The P0.1 arranged in the first ZigBee module is interrupt mode;
Step 1-2, the trigger mode arranging the P0.1 in the first ZigBee module are rising edge trigger mode; Wait for;
If when the connected detection part of step 1-3 detects that vehicle sails the information in tunnel into, P0.1 pin then in the first ZigBee module produces rising edge, cause P0.1 to interrupt, then wireless transmission data acquisition command is given the second ZigBee module in all data acquisition nodes and is arranged in the first ZigBee module of the trigger node outside tunnel exit;
Step 1-4: wireless interruption, resolve wireless information, if wireless information is the uploading data order that the 3rd ZigBee module in policy control node is sent, then sending node type is to the 3rd ZigBee module in policy control node;
Step 1-5: return step 1-2;
The specific works process being arranged in described first ZigBee module of the trigger node outside tunnel exit comprises the following steps:
Step 2-1, initialization; The P0.1 arranged in the first ZigBee module is interrupt mode;
Step 2-2, the trigger mode arranging the P0.1 in the first ZigBee module are rising edge trigger mode; Wait for;
Step 2-3, wireless interruption, resolve wireless information, if wireless information is the data acquisition command of the described first ZigBee module wireless transmission of the trigger node be arranged in outside tunnel portal, then the trigger mode arranging P0.1 in its first ZigBee module is negative edge trigger mode;
Step 2-4: if when connected detection part detects that vehicle rolls the information in tunnel away from, P0.1 pin then in the first ZigBee module produces negative edge, cause P0.1 to interrupt, then wireless transmission stops data acquisition command to the second ZigBee module in each data acquisition node and the 3rd ZigBee module in policy control node;
Wireless interruption, resolve wireless information, if the uploading data order that the 3rd ZigBee module in policy control node is sent, then sending node type is to the 3rd ZigBee module in policy control node;
Step 2-5: return step 2-2.
Preferred in above technical scheme, in described data acquisition node, the specific works process of the second ZigBee module and ARM data acquisition and memory module is as follows:
Step 3-1, initialization; Second ZigBee module starts the operating system;
If this message, to message, is spread out of by serial ports by step 3-2 second ZigBee module wireless receiving;
Step 3-3, ARM data acquisition and memory module poll serial ports;
If step 3-4 serial ports has data, then resolve serial ports message: if be arranged in described first ZigBee module of the trigger node outside tunnel portal or described GPRS module wireless transmission data acquisition command, then ARM data acquisition and memory module receive data acquisition command, and the ARM data acquisition module of its inside carries out data acquisition and the data of collection is stored in connected SD card;
If the uploading data order that the 3rd ZigBee module in policy control node is sent, then ARM data acquisition and memory module receive uploading data order, packed data from reading data in connected SD card and being compressed by corresponding data, and to be transferred to the 3rd ZigBee module in policy control node by described ARM data acquisition module by the second ZigBee module;
Step 3-5: return step 3-3;
The specific works process of the 3rd ZigBee module in described policy control node comprises the following steps:
Step 4-1, wireless receiving interrupt;
Step 4-2, parsing wireless information; If described first ZigBee module or the GPRS module wireless transmission that are arranged in the trigger node outside tunnel exit stop data acquisition command, then carry out next step;
Step 4-3, the second ZigBee module sent in uploading data order to the i-th data acquisition node; Resolve after receiving wireless information, if the packed data of the second ZigBee module in i-th data acquisition node, then receive corresponding packed data and be sent to connected GPRS module;
Step 4-4, get i=i+1, return step 4-3.
The inventive method has higher node capacity and farther topology distance compared with the existing wireless data acquisition system based on WiFi; The inventive method is compared with the existing wireless data acquisition system based on ZigBee, with the addition of automatic trigger mechanism, the data acquisition under self-defined trigger condition can be realized, by in conjunction with embedded technology, improve the sampling rate of data, and each acquisition node carries out compression process to data, reduce the wireless data communications amount of ZigBee-network, obtain higher effective transmission bandwidth, improve the adaptability to severe network environment, decrease the flow of GPRS network remote transmission simultaneously, provide cost savings; The inventive method gathers when meeting trigger condition, and node dormancy when not meeting trigger condition, saves system energy consumption, by powered battery, avoid the problem of field power taking difficulty.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 be air pressure wave in tunnel in the preferred embodiment of the present invention 1 acquisition system in a trigger node, an acquisition node, policy control node, Cloud Server and a PC syndeton schematic diagram;
Fig. 2 be air pressure wave in tunnel in the preferred embodiment of the present invention 3 acquisition system in mobile phone, an acquisition node, policy control node, Cloud Server and a PC syndeton schematic diagram;
Wherein, 11, trigger node, the 111, first ZigBee module, 112, detection part, 12, data acquisition node, the 121, second ZigBee module, 122, ARM data acquisition and memory module, 1221, ARM data acquisition module, 1222, SD card, 13, policy control node, 131, the 3rd ZigBee module, 132, GPRS module, 14, Cloud Server, 15, PC, 16, mobile phone.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can limit according to claim and cover is implemented.
Embodiment 1:
For certain tunnel, length of tunnel is 1000 meters, and adopt the acquisition system of air pressure wave in tunnel of the present invention and collecting method to carry out data acquisition, Details as Follows:
A kind of acquisition system of air pressure wave in tunnel, refer to Fig. 1, comprise two trigger node 11 (distance between a described trigger node 11 and tunnel portal and the distance described in another between trigger node 11 and tunnel exit are 150 meters) be separately positioned on outside tunnel portal and outlet, 20 data acquisition nodes 12 (distance between adjacent two described data acquisition nodes 12 is 50 meters) on tunnel inner wall are arranged in successively by tunnel portal to Way out, be arranged on a policy control node 13 in tunnel portal or outlet outside, carry out the Cloud Server 14 of wireless telecommunications with policy control node 13 and to be carried out the PC 15 (PC and Cloud Server can also adopt wired connection according to the actual requirements) of communication by Ethernet with described Cloud Server 14, refer to Fig. 1.In real world applications, according to the actual requirements, multiple trigger node, data acquisition node and policy control node can also be arranged simultaneously, both can be used for synchronously obtaining data, also can using unnecessary parts as spare unit, especially break down or precision reduces time conveniently to replace.
ZigBee is the low-power consumption LAN protocol based on IEEE802.15.4 standard.
ARM (AcornRISCMachine) is a risc microcontroller of Acorn company limited towards low budget Market Design.Arm processor itself is 32 designs, but is also equipped with 16 bit instruction collection, saves in general and reaches 35%, but can retain having superiority of 32 systems than 32 codes of equal value.
Described trigger node 11 comprises the first ZigBee module 111 of being connected with described second ZigBee module 121 and described 3rd ZigBee module 131 respectively and to be connected with described first ZigBee module 111 and for detecting the detection part 112 whether having vehicular traffic, described detection part 112 is ultrasonic sensor, and the model of described ultrasonic sensor is KS103H.
Described data acquisition node 12 comprises the second ZigBee module 121 be connected with described first ZigBee module 111 and the ARM data acquisition be connected with described second ZigBee module 121 and memory module 122, the processor chips of described ARM data acquisition and memory module 122 are S3C2410 chip, it comprises and the ARM data acquisition module 1221 of described second ZigBee module 121 both-way communication and the SD card 1222 with described ARM data acquisition module 1221 both-way communication, and the circuit connection of described SD card 1222 is SD pattern.
Described policy control node 13 comprises the 3rd ZigBee module 131 be connected with described first ZigBee module 111 and the second ZigBee module 121 respectively and the GPRS module 132 be connected with described 3rd ZigBee module 131 and described Cloud Server 14 respectively, wherein, be wireless bidirectional communication between described second ZigBee module 121 and described 3rd ZigBee module 131.
The processor chips of described first ZigBee module 111, second ZigBee module 121 and the 3rd ZigBee module 131 are CC2530 chip.
The model of described ultrasonic sensor is KS103H, and its SCL pin is connected with the P0.1 pin IO of described first ZigBee module 111; The K15 pin TXD0 of described ARM data acquisition and memory module 122 is connected with the P0.2 pin RX of described second ZigBee module 121, and the K17 pin RXD0 of described ARM data acquisition and memory module 122 is connected with the P0.3 pin TX of described second ZigBee module 121.
The collecting method of the acquisition system of above-mentioned air pressure wave in tunnel, comprises the following steps:
Preparation process, specifically: in the ARM data acquisition in data acquisition node 12 and memory module 122, setting sampling rate is 300sps and setting data pre-stored space is 3 seconds;
Step one: the trigger mode that P0.1 pin in the first ZigBee module 111 in two described trigger node 11 interrupts all is set as rising edge trigger mode;
The detection part 112 being arranged in the trigger node 11 outside tunnel portal detects that vehicle feeds back to connected described first ZigBee module 111 when sailing tunnel into;
Step 2: described first ZigBee module 111 being arranged in the trigger node 11 outside tunnel portal sends data acquisition command to the second ZigBee module 121 of all data acquisition nodes 12 and the first ZigBee module 111 being arranged in the trigger node 11 outside tunnel exit;
Step 3: after the first ZigBee module 111 being arranged in the trigger node 11 outside tunnel exit receives data acquisition command, its trigger mode becomes negative edge trigger mode from rising edge trigger mode;
ARM data acquisition in each data acquisition node 12 and memory module 122 receive the laggard promoting the circulation of qi pressure data acquisition of data acquisition command by serial ports and are preserved by the corresponding data collected;
Step 4: when the detection part 112 being arranged in the trigger node 11 outside tunnel exit detects that vehicle rolls tunnel away from, described first ZigBee module 111 being arranged in the trigger node 11 outside tunnel exit sends and stops data acquisition command to the 3rd ZigBee module 131 of the second ZigBee module 121 of each data acquisition node 12 and policy control node 13; The trigger mode being arranged in the first ZigBee module 111 of the trigger node 11 outside tunnel exit becomes rising edge trigger mode from negative edge trigger mode; Data acquisition is stopped after ARM data acquisition in each data acquisition node 12 and memory module 122 receive stopping data acquisition command by serial ports;
Step 5: the 3rd ZigBee module 131 in described policy control node 13 receives stopping data acquisition command, then carry out next step;
Step 6: the 3rd ZigBee module 131 in described policy control node 13 sends uploading data order to the second ZigBee module 121 in i-th data acquisition node 12, wherein, i gets and is more than or equal to 1 and the natural number being less than the sum of total data acquisition node; After ARM data acquisition in i-th data acquisition node 12 and memory module 122 receive uploading data order by series connection by the second ZigBee module of being connected with its serial ports by the data feedback that compressed to the 3rd ZigBee module 131 in policy control node 13; Associated compression data are uploaded to Cloud Server 14 by GPRS module 132 by the 3rd ZigBee module 131 in policy control node 13;
Step 7: get i=i+1, repeats step 6;
Step 8: user obtains associated compression data by PC 15 from Cloud Server 14.
When vehicle is from sailing tunnel into rolling tunnel away from, Details as Follows for each component working:
Two described first ZigBee module 111 of two trigger node 11 1, being arranged in outside tunnel portal and being positioned at outside tunnel exit all carry out initialization, and the P0.1 arranged in two the first ZigBee module 111 is interrupt mode and the trigger mode arranging P0.1 is rising edge trigger mode; Wait for;
All second ZigBee module 121 in all described data acquisition nodes 12 all carry out initialization, and the second all ZigBee module 121 all starts the operating system; If second ZigBee module 121 receives wireless data in described data acquisition node 12, serial ports spreads out of; ARM data acquisition and memory module 122 poll serial ports;
2, when the detection part 112 being arranged in the trigger node 11 outside tunnel portal detects that vehicle sails the information in tunnel into, P0.1 pin in first ZigBee module 111 produces negative edge, P0.1 is caused to interrupt, then the first ZigBee module 111 wireless transmission data acquisition command first ZigBee module 111 of giving the second ZigBee module 121 in all data acquisition nodes 12 and being arranged in the trigger node 11 outside tunnel exit (herein, according to the actual requirements, also can simultaneously wireless transmission data acquisition command to the 3rd ZigBee module 131 in policy control node 13),
3, described first ZigBee module 111 being arranged in the trigger node 11 outside tunnel exit receives the data acquisition command of described first ZigBee module 111 wireless transmission of the trigger node 11 be arranged in outside tunnel portal, then the trigger mode arranging P0.1 in its first ZigBee module 111 is negative edge trigger mode;
ARM data acquisition in all data acquisition nodes 12 and memory module 122 receive data acquisition command by serial ports, the ARM data acquisition module 1221 of its inside carries out data acquisition and the data of collection to be stored in connected SD card 1222 (if the 3rd ZigBee module 131 now in policy control node 13 receives data acquisition command, now, the 3rd ZigBee module 131 is failure to actuate);
4, when the detection part 112 being arranged in the trigger node 11 outside tunnel exit detects that vehicle rolls the information in tunnel away from, P0.1 pin in first ZigBee module 111 produces negative edge, P0.1 is caused to interrupt, then the first ZigBee module 111 wireless transmission stops data acquisition command (also can data acquisition command be stopped to described first ZigBee module 111 of the trigger node 11 be arranged in outside tunnel portal by wireless transmission to the 3rd ZigBee module 131 in the second ZigBee module 121 in all data acquisition nodes 12 and policy control node 13, now described first ZigBee module 111 is failure to actuate),
5, the 3rd ZigBee module 131 in described policy control node 13 finds that wireless receiving interrupts, resolve wireless information: if described first ZigBee module 111 wireless transmission being arranged in the trigger node 11 outside tunnel exit stops data acquisition command, then send uploading data order successively to the second ZigBee module 121 (, according to by tunnel portal to the uploading data successively that puts in order of Way out) in each data acquisition node 12 herein according to tandem;
6, the first ZigBee module 111 being arranged in the trigger node 11 outside tunnel portal judges wireless interruption, then resolve wireless information, if receive the uploading data order that the 3rd ZigBee module 131 in policy control node 13 is sent, then sending node type is to the 3rd ZigBee module 131 in policy control node 13;
After the second ZigBee module 121 in data acquisition node 12 receives wireless information, serial ports spreads out of; ARM data acquisition and memory module 122 poll serial ports, if serial ports has data, then resolve serial ports message: if the uploading data order that the 3rd ZigBee module 131 in policy control node 13 is sent, then ARM data acquisition and memory module 122 receive uploading data order, the described ARM data acquisition module 1221 of its inside reads data and is compressed by corresponding data in connected SD card 1222, and packed data is transferred to the 3rd ZigBee module 131 in policy control node 13 by the second ZigBee module 121;
7, the 3rd ZigBee module 131 in policy control node 13 receives the packed data of the second ZigBee module 121 in data acquisition node 12, then receive corresponding packed data and be sent to connected GPRS module 132, the packed data received is uploaded to Cloud Server 14 by GPRS module 132;
8, user uses PC 15 to obtain associated compression data from Cloud Server 14 to carry out decompress(ion), compare peering.
Above-mentioned each parts adopt built-in power mode, and are all in dormant state when each parts are failure to actuate.
Apply acquisition system and the collecting method thereof of air pressure wave in tunnel of the present invention, there is following effect:
1, compared with the existing wireless data acquisition system based on WiFi, there is higher node capacity and farther topology distance.
2, compared with the existing wireless data acquisition system based on ZigBee, with the addition of automatic trigger mechanism and (specifically refer to two trigger node 11 being positioned at outside tunnel portal and being positioned at outside tunnel exit, can detect that vehicle sails into and rolls tunnel away from time), the data acquisition (specifically referring to the setting of the trigger mode of P0.1 in the first ZigBee module 111 in two trigger node 11) under self-defined trigger condition can be realized, by in conjunction with embedded technology, improve the sampling rate of data, and each acquisition node carries out compression process and sequence uploading data to data, reduce the wireless data communications amount of ZigBee-network, obtain higher effective transmission bandwidth, improve the adaptability to severe network environment, decrease the flow of GPRS network remote transmission simultaneously, provide cost savings.
3, select Cloud Server as the receiving terminal of long-range sampled data, there is public network ip and can receive the data that GPRS network transmits with TCP send mode, any time all can receive data and never go offline, the computing machine connecting arbitrarily Internet all can extract data by Telnet Cloud Server, and there is powerful computing power, facilitate the aftertreatment of data.
4, gather when meeting trigger condition, node dormancy when not meeting trigger condition, saves system energy consumption, by powered battery, avoids the problem of field power taking difficulty.
Technical solution of the present invention is as shown in table 1 compared with the prior art.
Table 1 embodiment 1, existing wired methods and existing wireless method comparison sheet
Embodiment 2:
An acquisition system for air pressure wave in tunnel, difference from Example 1 is:
Detection part 112 adopts infrared receiving/transmission to pipe; 2, the P0.1 pin IO of the output switch parameter pin of infrared tube with described first ZigBee module 111 is connected.
The present embodiment triggers, data acquisition and to upload principle etc. all identical with embodiment 1, and both technique effects are similar.
Embodiment 3:
An acquisition system for air pressure wave in tunnel, refers to Fig. 2, and difference from Example 1 is:
1, described flip flop equipment is the mobile phone with the wireless connections of described GPRS module 132; Described data acquisition node 12 comprises the second ZigBee module 121 and the ARM data acquisition that is connected with described second ZigBee module 121 and memory module 122; Described policy control node 13 comprise the 3rd ZigBee module 131 that is connected with described second ZigBee module 121 both-way communication and respectively with described 3rd ZigBee module 131, described Cloud Server 14 and and the GPRS module 132 that is connected of described flip flop equipment.
2, its collecting method, comprises the following steps:
Step one: the GPRS module 132 in policy control node 13 is arranged with the 3rd ZigBee module 131 inside be attached thereto, when mobile phone sends information 0 to GPRS module 132, the 3rd ZigBee module 131 sends data acquisition command; When flip flop equipment sends information 1 to GPRS module 132, the 3rd ZigBee module 131 sends and stops data acquisition command;
Step 2: when vehicle sails tunnel into, mobile phone sends information 0 to the GPRS module 132 in policy control node 13, transfer data to connected 3rd ZigBee module 131 by serial ports after GPRS module 132 in policy control node 13 receives message, described 3rd ZigBee module 131 sends data acquisition command to the second ZigBee module 121 in all data acquisition nodes 12;
Step 3: the ARM data acquisition in each data acquisition node 12 and memory module 122 receive the laggard promoting the circulation of qi pressure data acquisition of data acquisition command by serial ports and preserved by the corresponding data collected;
Step 4: when vehicle rolls tunnel away from, mobile phone sends information 1 to the GPRS module 132 in policy control node 13; Transfer data to connected 3rd ZigBee module 131 by serial ports after GPRS module 132 receipt message in policy control node 13, described 3rd ZigBee module 131 sends to the second ZigBee module 121 in all data acquisition nodes 12 and stops data acquisition command;
Step 5: stop data acquisition after the ARM data acquisition in each data acquisition node 12 and memory module 122 receive stopping data acquisition command by serial ports;
Step 6: the 3rd ZigBee module 131 in described policy control node 13 sends uploading data order to the second ZigBee module 121 in i-th data acquisition node 12, wherein, i gets and is more than or equal to 1 and the natural number being less than the sum of total data acquisition node; After ARM data acquisition in i-th data acquisition node 12 and memory module 122 receive uploading data order by serial ports by the second ZigBee module 121 of being connected with its serial ports by the data feedback that compressed to the 3rd ZigBee module 131 in policy control node 13; Associated compression data are uploaded to Cloud Server 14 by GPRS module 132 by the 3rd ZigBee module 131 in policy control node 13;
Step 7: get i=i+1, repeats step 6;
Step 8: user obtains associated compression data by PC 15 from Cloud Server 14.
The technique effect that the present embodiment obtains is also suitable with embodiment.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the acquisition system of an air pressure wave in tunnel, it is characterized in that, comprise when vehicle sails tunnel into and rolls tunnel away from, send Trigger message flip flop equipment, multiple data acquisition nodes (12), at least one policy control node (13) be arranged in successively by tunnel portal to Way out on tunnel inner wall, carry out the Cloud Server (14) of wireless telecommunications with described policy control node (13) and carry out PC (15) that is wireless or wired connection with described Cloud Server (14);
Described data acquisition node (12) comprises the second ZigBee module (121) be connected with described flip flop equipment and the ARM data acquisition be connected with described second ZigBee module (121) and memory module (122);
Described policy control node (13) comprises the 3rd ZigBee module (131) be connected with described second ZigBee module (121) and described flip flop equipment respectively and the GPRS module (132) be connected with described 3rd ZigBee module (131) and described Cloud Server (14) respectively;
Or described data acquisition node (12) comprises the second ZigBee module (121) and the ARM data acquisition that is connected with described second ZigBee module (121) and memory module (122);
Described policy control node (13) comprises the 3rd ZigBee module (131) be connected with described second ZigBee module (121) and the GPRS module (132) be connected with described 3rd ZigBee module (131), described Cloud Server (14) and described flip flop equipment respectively.
2. the acquisition system of air pressure wave in tunnel according to claim 1, is characterized in that, described policy control node (13) is arranged on the outside of tunnel portal or outlet; The processor chips of described second ZigBee module (121) and described 3rd ZigBee module (131) are CC2530 chip;
The processor chips of described ARM data acquisition and memory module (122) are S3C2410 chip, it comprises and the ARM data acquisition module (1221) of described second ZigBee module (121) both-way communication and the SD card (1222) with described ARM data acquisition module (1221) both-way communication, and the circuit connection of described SD card (1222) is SD pattern;
Communication is carried out by Ethernet between described Cloud Server (14) and described PC (15);
For bidirectional wireless communication is connected between described second ZigBee module (121) with described 3rd ZigBee module (131).
3. the acquisition system of the air pressure wave in tunnel according to claim 1-2 any one, is characterized in that, described flip flop equipment is the mobile phone (16) with described GPRS module (132) wireless connections.
4. the acquisition system of the air pressure wave in tunnel according to claim 1-2 any one, is characterized in that, described flip flop equipment comprises at least two trigger node (11) be separately positioned on outside tunnel portal and outside tunnel exit;
Described trigger node (11) comprises the first ZigBee module (111) of being connected with described second ZigBee module (121) and described 3rd ZigBee module (131) respectively and is connected with described first ZigBee module (111) and sails for detecting vehicle the detection part (112) that tunnel and vehicle roll tunnel away from into;
The first ZigBee module (111) between two described trigger node (11) is interconnected.
5. the acquisition system of air pressure wave in tunnel according to claim 4, it is characterized in that, the distance between a described trigger node (11) and tunnel portal and the distance between trigger node described in another (11) and tunnel exit are 100-200 rice; Multiple described data acquisition node (12) equidistantly distributes, and the distance between adjacent two described data acquisition nodes (12) is 20-100 rice;
The processor chips of described first ZigBee module (111) are CC2530 chip;
Described detection part (112) is for ultrasonic sensor or infrared receiving/transmission are to pipe.
6. the acquisition system of air pressure wave in tunnel according to claim 5, is characterized in that,
The model of described ultrasonic sensor is KS103H;
The SCL pin of described ultrasonic sensor or the output switch parameter pin of described infrared tube are connected with the P0.1 pin IO of described first ZigBee module (111);
The K15 pin TXD0 of described ARM data acquisition and memory module (122) is connected with the P0.2 pin RX of described second ZigBee module (121), and the K17 pin RXD0 of described ARM data acquisition and memory module (122) is connected with the P0.3 pin TX of described second ZigBee module (121).
7. a collecting method for the acquisition system of air pressure wave in tunnel as claimed in claim 3, is characterized in that, comprise the following steps:
Step one: the GPRS module (132) in policy control node (13) and the 3rd ZigBee module (131) inside that is attached thereto are arranged, when flip flop equipment sends information 0 to GPRS module (132), described 3rd ZigBee module (131) sends data acquisition command; When flip flop equipment sends information 1 to GPRS module (132), described 3rd ZigBee module (131) sends and stops data acquisition command;
Step 2: when vehicle sails tunnel into, flip flop equipment sends information 0 to the GPRS module (132) in policy control node (13), transfer data to connected 3rd ZigBee module (131) by serial ports after GPRS module (132) in policy control node (13) receives message, described 3rd ZigBee module (131) sends data acquisition command to the second ZigBee module (121) in all data acquisition nodes (12);
Step 3: the ARM data acquisition in each data acquisition node (12) and memory module (122) receive the laggard promoting the circulation of qi pressure data acquisition of data acquisition command by serial ports and preserved by the corresponding data collected;
Step 4: when vehicle rolls tunnel away from, flip flop equipment sends information 1 to the GPRS module (132) in policy control node (13); Transfer data to connected 3rd ZigBee module (131) by serial ports after GPRS module (132) in policy control node (13) receives message, described 3rd ZigBee module (131) sends to the second ZigBee module (121) in all data acquisition nodes (12) and stops data acquisition command;
Step 5: stop data acquisition after the ARM data acquisition in each data acquisition node (12) and memory module (122) receive stopping data acquisition command by serial ports;
Step 6: the 3rd ZigBee module (131) in described policy control node (13) sends uploading data order to the second ZigBee module (121) in i-th data acquisition node (12), wherein, i gets and is more than or equal to 1 and the natural number being less than the sum of total data acquisition node; After ARM data acquisition in i-th data acquisition node (12) and memory module (122) receive uploading data order by serial ports by the second ZigBee module of being connected with its serial ports by the data feedback that compressed to the 3rd ZigBee module (131) in policy control node (13); Associated compression data are uploaded to Cloud Server (14) by GPRS module (132) by the 3rd ZigBee module (131) in policy control node (13);
Step 7: get i=i+1, repeats step 6;
Step 8: user obtains associated compression data by PC (15) from Cloud Server (14).
8. a collecting method for the acquisition system of air pressure wave in tunnel as claimed in claim 4, is characterized in that, comprise the following steps:
Step one: the trigger mode that P0.1 pin in the first ZigBee module (111) in two described trigger node (11) interrupts all is set as rising edge trigger mode;
The detection part (112) being arranged in the trigger node (11) outside tunnel portal detects that vehicle feeds back to connected described first ZigBee module (111) when sailing tunnel into;
Step 2: described first ZigBee module (111) being arranged in the trigger node (11) outside tunnel portal sends data acquisition command to second ZigBee module (121) of all data acquisition nodes (12) and the first ZigBee module (111) being arranged in the trigger node (11) outside tunnel exit;
Step 3: after the first ZigBee module (111) being arranged in the trigger node (11) outside tunnel exit receives data acquisition command, its trigger mode becomes negative edge trigger mode from rising edge trigger mode;
ARM data acquisition in each data acquisition node (12) and memory module (122) receive the laggard promoting the circulation of qi pressure data acquisition of data acquisition command by serial ports and are preserved by the corresponding data collected;
Step 4: when the detection part (112) being arranged in the trigger node (11) outside tunnel exit detects that vehicle rolls tunnel away from, described first ZigBee module (111) transmission being arranged in the trigger node (11) outside tunnel exit stops data acquisition command to the 3rd ZigBee module (131) of second ZigBee module (121) of each data acquisition node (12) and policy control node (13); The trigger mode being arranged in first ZigBee module (111) of the trigger node (11) outside tunnel exit becomes rising edge trigger mode from negative edge trigger mode; Data acquisition is stopped after ARM data acquisition in each data acquisition node (12) and memory module (122) receive stopping data acquisition command by serial ports;
Step 5: the 3rd ZigBee module (131) in described policy control node (13) receives stopping data acquisition command, then carry out next step;
Step 6: the 3rd ZigBee module (131) in described policy control node (13) sends uploading data order to the second ZigBee module (121) in i-th data acquisition node (12), wherein, i gets and is more than or equal to 1 and the natural number being less than the sum of total data acquisition node; After ARM data acquisition in i-th data acquisition node (12) and memory module (122) receive uploading data order by serial ports by the second ZigBee module of being connected with its serial ports by the data feedback that compressed to the 3rd ZigBee module (131) in policy control node (13); Associated compression data are uploaded to Cloud Server (14) by GPRS module (132) by the 3rd ZigBee module (131) in policy control node (13);
Step 7: get i=i+1, repeats step 6;
Step 8: user obtains associated compression data by PC (15) from Cloud Server (14).
9. collecting method according to claim 8, is characterized in that, the specific works process being arranged in described first ZigBee module (111) of the trigger node (11) outside tunnel portal comprises the following steps:
Step 1-1, initialization; The P0.1 arranged in the first ZigBee module (111) is interrupt mode;
Step 1-2, the trigger mode of P0.1 arranged in the first ZigBee module (111) are rising edge trigger mode; Wait for;
If when the detection part (112) of the trigger node (11) that step 1-3 is arranged in outside tunnel portal detects that vehicle sails the information in tunnel into, P0.1 pin then in connected first ZigBee module (111) produces rising edge, cause P0.1 to interrupt, then wireless transmission data acquisition command is given the second ZigBee module (121) in all data acquisition nodes (12) and is arranged in first ZigBee module (111) of the trigger node (11) outside tunnel exit;
Step 1-4: wireless interruption, resolve wireless information, if wireless information is the uploading data order that the 3rd ZigBee module (131) in policy control node (13) is sent, then sending node type is to the 3rd ZigBee module (131) in policy control node (13);
Step 1-5: return step 1-2;
The specific works process being arranged in described first ZigBee module (111) of the trigger node (11) outside tunnel exit comprises the following steps:
Step 2-1, initialization; The P0.1 arranged in the first ZigBee module (111) is interrupt mode;
Step 2-2, the trigger mode of P0.1 arranged in the first ZigBee module (111) are rising edge trigger mode; Wait for;
Step 2-3, wireless interruption, resolve wireless information, if wireless information is the data acquisition command of described first ZigBee module (111) wireless transmission of the trigger node (11) be arranged in outside tunnel portal, then the trigger mode arranging P0.1 in its first ZigBee module (111) is negative edge trigger mode;
Step 2-4: if when connected detection part (112) detects that vehicle rolls tunnel away from, P0.1 pin in first ZigBee module (111) produces negative edge, cause P0.1 to interrupt, then wireless transmission stops data acquisition command to the second ZigBee module (121) in each data acquisition node (12) and the 3rd ZigBee module (131) in policy control node (13);
Wireless interruption, resolve wireless information, if the uploading data order that the 3rd ZigBee module (131) in policy control node (13) is sent, then sending node type is to the 3rd ZigBee module (131) in policy control node (13);
Step 2-5: return step 2-2.
10. the collecting method according to claim 7 or 8, it is characterized in that, in described data acquisition node (12), the specific works process of the second ZigBee module (121) and ARM data acquisition and memory module (122) is as follows:
Step 3-1, initialization; Second ZigBee module (121) starts the operating system;
If this message, to message, is spread out of by serial ports by step 3-2 second ZigBee module (121) wireless receiving;
Step 3-3, ARM data acquisition and memory module (122) poll serial ports;
If step 3-4 serial ports has data, then resolve serial ports message: if be arranged in described first ZigBee module (111) or described GPRS module (132) the wireless transmission data acquisition command of the trigger node (11) outside tunnel portal, then ARM data acquisition and memory module (122) receive data acquisition command, and the ARM data acquisition module (1221) of its inside carries out data acquisition and the data of collection is stored in connected SD card (1222);
If the uploading data order that the 3rd ZigBee module (131) in policy control node (13) is sent, then ARM data acquisition and memory module (122) receive uploading data order by serial ports, the described ARM data acquisition module (1221) of its inside is read data and is compressed by corresponding data in connected SD card (1222), and packed data is transferred to the 3rd ZigBee module (131) in policy control node (13) by the second ZigBee module (121);
Step 3-5: return step 3-3;
The specific works process of the 3rd ZigBee module (131) in described policy control node (13) comprises the following steps:
Step 4-1, wireless receiving interrupt;
Step 4-2, parsing wireless information; If described first ZigBee module (111) or GPRS module (132) wireless transmission that are arranged in the trigger node (11) outside tunnel exit stop data acquisition command, then carry out next step;
Step 4-3, the second ZigBee module (121) sent in uploading data order to the i-th data acquisition node (12); Resolve after receiving wireless information, if the packed data of the second ZigBee module (121) in i-th data acquisition node (12), then receive corresponding packed data and be sent to connected GPRS module (132);
Step 4-4, get i=i+1, return step 4-3.
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