CN109774743A - A kind of the operation data acquiring and transmission system and data acquisition and transmission method of track train - Google Patents
A kind of the operation data acquiring and transmission system and data acquisition and transmission method of track train Download PDFInfo
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- CN109774743A CN109774743A CN201910063584.XA CN201910063584A CN109774743A CN 109774743 A CN109774743 A CN 109774743A CN 201910063584 A CN201910063584 A CN 201910063584A CN 109774743 A CN109774743 A CN 109774743A
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Abstract
The invention discloses the operation data acquiring and transmission systems and data acquisition and transmission method of a kind of track train, belong to track train operation control technology field.Operation data by the multiple sensor node automatic collection track trains being arranged on track train, and it is transmitted to gateway, it does not all need manually to participate in whole process, it is possible to reduce put into the human resources that the operating condition of track train is monitored；Controller can be in non-operating state in track train, or detect that the voltage of chargeable energy-storage travelling wave tube is less than or equal to control corresponding sensor node when predetermined voltage threshold and enter dormant state, so as to reduce the power consumption of sensor node；Furthermore, all sensor nodes complete the transmission of an operation data together after, dormant state can also be entered, this energy-efficient mode provides energy for the monitoring running state of track train and guarantees, the service life for extending sensor node effectively reduces the maintenance cost of track train.
Description
Technical field
The present invention relates to track trains to run control technology field, more specifically to a kind of operation of track train
Data collection and transfering system and data acquisition and transmission method.
Background technique
The currently used high-speed rail motor-car in China is generally 8 section compartments or 16 section compartments, is widely used in passenger transport field
Jing Zhong, compared to the goods train in a compartments up to a hundred, high-speed rail motor-car short compartment scene at last, in the scene of daily railway transportation
Using also more extensive.With flourishing for China's track transportation industry, the safety of rail traffic vehicles becomes ever more important.
Since health monitoring is the important leverage of safe train operation, it is therefore desirable to take appropriate measures to realize train core component
Fault detection.Traditional inefficient manual periodic inspection mode has been unable to satisfy current operation demand, therefore needing one kind can
With the system of real-time automatic monitoring train health status, lower to solve manual periodic inspection efficiency, waste of manpower resource is asked
Topic.
Summary of the invention
The present invention provides the operation data acquiring and transmission system and method for a kind of track train, to solve above-mentioned background technique
Present in technical problem,
To achieve the above object, specific technical solution of the present invention is as follows:
On the one hand, the present invention provides a kind of operation data acquiring and transmission system of track train, including
Gateway on the track train and multiple sensor nodes are set, and each sensor node includes:
Controller, sensor, wireless transport module, chargeable energy-storage travelling wave tube, vibrational energy collector and battery, in which:
The vibrational energy collector, the mechanical energy for generating wheel hub vibration are converted into electric energy and are transferred to institute
Chargeable energy-storage travelling wave tube is stated to be stored；
The controller, for the selection when the voltage for detecting the chargeable energy-storage travelling wave tube is greater than predetermined voltage threshold
The chargeable energy-storage travelling wave tube is less than or equal to default electricity as main power supply, in the voltage for detecting the chargeable energy-storage travelling wave tube
Select the battery as main power supply when pressing threshold value；
The sensor, for acquiring the operation data of the track train during track train operation；
The wireless transport module, for the operation data to be transmitted to the gateway；
The gateway, for the operation data received to be sent to server.
Preferably, when the controller detects that the track train is in non-operating state, and the chargeable energy storage
When the voltage of element is less than or equal to predetermined voltage threshold, controller controls corresponding sensor node and enters dormant state, and week
The wake-up of the phase property sensor node, while detecting the operation of the voltage and the track train of the chargeable energy-storage travelling wave tube
Situation, and according to the voltage of the chargeable energy-storage travelling wave tube and the operating condition of the track train to the sensor node
Working condition is controlled.
Preferably, when the controller detects that the track train is in operating status, and the chargeable energy storage member
When the voltage of part is greater than predetermined voltage threshold, the controller controls the operation number that the sensor acquires the track train
According to, and the operation data is transmitted by the wireless transport module.
Preferably, the chargeable energy-storage travelling wave tube is super capacitor, and the sensor is 3-axis acceleration sensor, described
Battery is lithium ion battery, and the wireless transport module is radio-frequency module.
Preferably, the sensor node press with the distance between gateway subregion, except nearest apart from the gateway
Other than subregion, the corresponding sensor node of other each subregions selects at least one sensor section from the target adjacent area of the subregion
Point is used as relay node, receives and forward operation data, until the collected operation data of each sensor node is successively sent
To corresponding gateway, the target adjacent area of each subregion is point that gateway described in distance is nearest in two adjacent sectors of the subregion
Area.
Preferably, the compartment head of the track train and compartment tail are each provided with a gateway, at each wheel position all
It is provided with a sensor node, each subregion is in two section compartment intersections, the biography of the preset dividing line two sides of track train
Sensor node is for transmitting collected operation data to the gateway of the gateway of the compartment head and the compartment tail respectively.
On the other hand, the present invention provide it is a kind of utilize track train operation data acquiring and transmission system as described above carry out
The method of data acquisition transmission, comprising:
Step S110: the controller of each sensor node controls corresponding sensor node and enters dormant state；
Step S120: each sensor node is waken up after the arrival of preset first wake up time period；
Step S130: the controller of each sensor node acquires the voltage of respectively chargeable energy-storage travelling wave tube；
Step S140: judging whether the voltage of chargeable energy-storage travelling wave tube is greater than predetermined voltage threshold, if so, going to step
Otherwise S150 goes to step S110；
Whether in operating status step S150: judging track train, if so, then going to step S160, otherwise, goes to step
Rapid S110；
Step S160: the corresponding sensor of each sensor node acquires the operation data of the track train respectively,
After sending the operation data respectively acquired to the gateway by corresponding wireless transport module, it is again introduced into step
S110。
Further, before the step S110, further includes:
Initialize each sensor node；Time service equipment gives each sensor node synchronous RTC clock, until institute
The RTC clock for the sensor node having is consistent.
Further, further includes:
Each sensor node is waken up after the arrival of preset second wake up time period；Each sensor node choosing
Select power supply of the respective battery as respective RTC clock；Each sensor node sends broadcast packet, and the light broadcasts Bao Zhongbao
The RTC clock information of the node containing respective sensor is again introduced into step S110 after completing RTC and synchronizing.
Further, the sensor node presses the distance between gateway subregion, except nearest apart from the gateway
Subregion other than, the corresponding sensor node of each subregion selects at least one sensor node to make from the target adjacent area in the area
For relay node, operation data is received and forwards, until the collected operation data of each sensor node is successively sent to phase
The gateway answered, the target adjacent area of each subregion are the subregion that gateway described in distance is nearest in two adjacent sectors of the subregion, respectively
The sensor node transmits the operation data respectively acquired based on TDMA agreement, and step includes:
Each sensor node broadcasted in corresponding first time slot itself address information and signal it is strong
Degree；
The corresponding sensor node of each subregion selects the biography for possessing strongest received signal value from the target adjacent area in the area
Sensor node is as relay node；
Each relay node in corresponding second time slot to select the node as the sensing of relay node
Whether it chosen successfully for device node feeding back；
Each sensor node broadcasted in corresponding third time slot itself address information and signal it is strong
Degree, so that the sensor node of last selection relay node failure reselects relay node；
Each sensor node sends corresponding operation data in corresponding sending time slots and saves to corresponding relaying
Point, so that all operation datas are transferred to corresponding gateway.
Invention the utility model has the advantages that sensor node can timely automatic collection track train operation data, and passed
It is defeated by gateway, it is possible to reduce put into the human resources that the operating condition of track train is monitored；Controller can be in track
Train is in non-operating state, or detects that control is corresponding when the voltage of chargeable energy-storage travelling wave tube is less than or equal to predetermined voltage threshold
Sensor node enter dormant state, so as to reduce the power consumption of sensor node；In addition, all sensor nodes exist
After the transmission for completing an operation data together, dormant state can also be entered, this energy-efficient mode is the fortune of track train
Row status monitoring provides energy guarantee, extends the service life of sensor node, effectively reduces the maintenance of track train
Cost.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the hardware configuration signal of the operation data acquiring and transmission system for the track train that the embodiment of the present invention one provides
Figure；
Fig. 2 is a kind of hardware structural diagram for the sensor node that the embodiment of the present invention one provides；
Fig. 3 is the sensor network topological schematic diagram for the track train that the embodiment of the present invention one provides；
Fig. 4 is that the slot table that the embodiment of the present invention one provides distributes schematic diagram；
Fig. 5 is the collecting and transmitting method of the operation data acquiring and transmission system of track train provided by Embodiment 2 of the present invention
Flow diagram；
Fig. 6 is the flow diagram that sensor node provided by Embodiment 2 of the present invention transmits operation data.
Specific embodiment
In order to keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and
Specific embodiment is described in detail, it should be understood that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Embodiment one
To solve to generally use the health status of manual periodic inspection track train in the prior art, cause detection efficiency low
Under, the problem of waste of manpower resource, the present embodiment provides a kind of operation data acquiring and transmission systems of track train, refer to figure
Shown in 1, including the gateway 11 and multiple sensor nodes 12 being arranged on track train, each sensor node 12 includes:
Controller 120, sensor 121, wireless transport module 122, chargeable energy-storage travelling wave tube 123, vibrational energy collector 124 and electricity
Pond 125, in which:
Vibrational energy collector 124 is used to converting the mechanical energy that wheel hub vibration generates to electric energy and being transferred to and can fill
Electric energy storage components 123 are stored；Controller 120 is used to be greater than default electricity in the voltage for detecting chargeable energy-storage travelling wave tube 123
It selects chargeable energy-storage travelling wave tube 123 as main power supply when pressing threshold value, is less than in the voltage for detecting chargeable energy-storage travelling wave tube 123
Select battery 125 as main power supply when equal to predetermined voltage threshold；Sensor 121 is used for during track train operation
The operation data of acquisition trajectory train；Wireless transport module 122 is used for transmission operation data；Gateway 11 is used for the fortune that will be received
Row data are sent to server, so that server analyzes the operation data, so that it is determined that the health status of track train.
Shown in Figure 2, in one embodiment, the chargeable energy-storage travelling wave tube in sensor node 12 is super capacitor
126, sensor is 3-axis acceleration sensor 127, and battery can be high capacity lithium ion battery 128, and wireless transport module is
Radio-frequency module 129.It should be noted that main power supply can power for entire sensor node, it can also only be sensor section
Part of devices power supply in point, specifically, the RTC clock of controller can be individually maintained by high capacity lithium ion battery, it is super
Capacitor is then the power supply of other devices.Controller in the present embodiment can carry out cutting for main power supply by hardware exchange mode
It changes, specifically, the selection of main electricity can be carried out by the hardware switching switch 130 in Fig. 2.
Predetermined voltage threshold in the present embodiment can be equal to required voltage when sensor node works normally, when can fill
The voltage of electric energy storage components is less than required voltage when sensor node works normally, and illustrates that chargeable energy-storage travelling wave tube can not sense
The demand of device node, thus controller can by way of hardware exchange by the main power supply source VDD from chargeable energy-storage travelling wave tube
It is transferred to battery.
For ease of understanding, a kind of specific structure of sensor node is provided here.
Controller in sensor node can be STM32 microcontroller, and STM32 microcontroller can be
32 ARM chips of STM32L452RE model.The STM32 chip of L series is all low-power consumption, the chip under deep-sleep
Power consumption can significantly extend the service life of sensor node less than 10 μ A.Vibrational energy collector can use electromagnetic vibration
Energy collecting device, when extraneous vibration, the extraneous vibration of elastic mechanism induction makes permanent magnet and coil generate relative motion, line
Circle will sense the magnetic flux of variation, produce electricl energy output, while the electric energy generated can charge to super capacitor.In addition, RTC is by big
Capacity lithium ion battery individually powered by VBAT pin, is maintained RTC clock forever in running order with this, be ensure that institute
There is sensor node being capable of suspend mode and wake-up simultaneously.In addition to RTC, all peripheral hardwares of STM32 are all by super capacitor or large capacity
Lithium ion battery is by VDD pin powered, and preferentially selection super capacitor power supply.Super-capacitor voltage is acquired using ADC, when
When super-capacitor voltage drops to 3.0V, VDD power supply source is transferred to great Rong from super capacitor by way of hardware exchange
Measure lithium ion battery.In addition, 3-axis acceleration sensor can use the ADXL372 chip of Ya De promise semiconductor company, this is
A kind of super low-power consumption accelerometer of measurement range ± 200g, can measure x, and the acceleration value of tri- axis of y, z supports highest 3200Hz
Sample frequency, fully meet the wheel hub vibration data sample requirement of track train.Finally, wireless radio frequency modules can adopt
With AT86RF212 radio frequency chip, it supports 780MHz/868MHz/915MHz frequency range.We use 780MHz frequency range, should
Chip has the characteristics that low-power consumption, high sensitivity and penetration power are strong, supports IEEE802.15.4 agreement, the number that can transmit needs
According to according to IEEE802.15.4 protocol encapsulation at corresponding data packet.It can be accurately by data according to the destination address in data packet
It is sent to the sensor node of corresponding address, therefore carries out sensor node according to actual demand using wireless radio frequency modules
Personalized networking.
Controller in the present embodiment one can be also used for detecting that track train is in non-operating state, or detect
Corresponding sensor node, which is controlled, when the voltage of chargeable energy-storage travelling wave tube is less than or equal to predetermined voltage threshold enters dormant state, this
Sample has fully considered the Run-time scenario of track train, can be very good the power consumption for reducing sensor node.It should be noted that passing
After entering dormant state, controller needs periodically to wake up sensor node sensor node, when can specifically be based on RTC
Clock wakes up, and the voltage of chargeable energy-storage travelling wave tube and the operating condition of track train are detected when waking up, and according to can
The voltage of charging energy-storing element and the operating condition of track train control the working condition of sensor node.Specifically,
Controller can be greater than predetermined voltage threshold in the voltage for detecting chargeable energy-storage travelling wave tube, and determine that track train is in operation
When state, the operation data of sensor acquisition trajectory train is controlled, and the operation data is transmitted by wireless transport module.
It should be noted that collected operation data can be transferred directly to by each sensor node in the present embodiment
Gateway on track train；The gateway that can also be transferred to by way of multi-hop transmission on track train, that is to say sensor
Its operation data can be transferred to sensor node B by node A, and sensor node B is by the operation data of sensor node A and certainly
The collected operation data of body is transferred to sensor node C together, and so on, until all operation datas are transferred to net
Until pass, it should be appreciated that a sensor node should be by the operation data of oneself acquisition and other biographies received
The operation data that sensor node transmits together to where gateway locality transmission namely sensor node A and gateway
The distance between should be greater than the distance between sensor node B and gateway, the distance between sensor node B and gateway are greater than
The distance between sensor node C and gateway.
So sensor node in the present embodiment can by with the distance between gateway subregion, except nearest apart from gateway
Other than area, the corresponding sensor node in each area selects at least one sensor node as relaying from the target adjacent area in the area
Node undertakes reception and forwards the task of operation data, until the collected operation data of each sensor node is successively sent to
Corresponding gateway, the target adjacent area in each area are the adjacent area that the distance gateway is nearest in two adjacent areas in the area, most apart from gateway
Itself collected operation data then can be transferred directly to gateway by the sensor node in close area.
In a kind of example, the compartment head and compartment tail of track train are each provided with a gateway, at each wheel position
It is both provided with a sensor node, each area is in two section compartment intersections, the biography of the preset dividing line two sides of track train
Sensor node is for transmitting collected operation data to the gateway of the gateway of compartment head and compartment tail respectively.It is assumed that default
Line of demarcation is train center line, and the sensor node of the line of demarcation two sides can be by way of multi-hop transmission respectively to compartment head
Transmit operation data with compartment tail, realize that networking and information summarize, here with the sensor network topological of line of demarcation side come into
Row illustrates, shown in Figure 3, and Fig. 3 is a kind of sensor network topological figure of track train, includes sensor in Fig. 3
Node and gateway, each compartment wheel position place a sensor node for vibrating data collection, and each compartment has 8
Operation data is transferred to gateway in a multi-hop fashion by a sensor node, sensor node.According to sensor in the present embodiment
Spacing between node and gateway to sensor node subregion, be classified into 1,2,3 ..., s ..., the area S, position when for networking
Identification, wherein S indicates total area's number.Each area is in two section compartment intersections, in addition to 1st area and the area S node include 4 nodes,
Remaining each area includes 8 nodes.Sensor node can according to the serial number in 1st area to the area S be 1,2 ..., n ..., N, and
And the address of sensor node can be set to its number value, N indicates the total number of sensor node.The multi-hop transmission of data
The area Jiang Cong s+1 is transferred to the area s, until being transmitted to gateway.
Sensor node in the present embodiment can complete the transmission of operation data based on TDMA, and TDMA is scheduling type MAC
The most commonly used mechanism in agreement, it divides time into periodic frame, and each frame is subdivided into time slot, this reality internal again
Applying the sensor node in example can periodically be worked and suspend mode under TDMA mechanism, to improve the present embodiment system
Controllability and real-time, reduce sensor node by power consumption as much as possible, are finally reached energy-efficient purpose.
The distribution of slot table is as shown in figure 4, t indicates that sensor network operates in t-th of activity periods, often in the present embodiment
The frame of one activity periods is divided into 5 time slot sections, is respectively used to neighbor information and obtains and relay node primary election, trunk node selection
As a result it feeds back, reselect relay node, data transmission and suspend mode.Each time slot section is divided into H againiA time slot, each time slot
Length is Lslot, then the length of each time slot section is HiLslot.Time slot is specifically allocated as follows:
Neighbor information obtains and relay node primary election time slot allocation: this time slot section Hi=N meets for each node distribution one
A single time slot, for the time slot distributed in the time slot section is known as the first time slot here convenient for differentiation, if
The time slot that the number for setting n node is n is the second time slot.Each sensor node can be wide in respective first time slot
Broadcast oneself address information, signal strength information and RTC clock value.Meanwhile it receiving in the area s+1 node from all nodes in the area s
After signal strength information, each sensor node in the area s+1 can be respectively oneself selection relay node, specifically, each sensing
Device node can choose the relay node for possessing the node of strongest received signal value as oneself.Then, all sections in the area s+1
Before point broadcast is completed, the area s node is in reception state, i.e., the area s node will receive the area s+1 node at the beginning of relay node
The broadcast packet of secondary selection information.
Trunk node selection result feedback slot distribution: this time slot section Hi=N, it is same to meet for each node distribution one
Single time slot, referred to herein as the second time slot.The time slot that the number that n node is arranged is n is the second time slot,
Whether relay node in the time slot to child node broadcasts it chosen successfully.Assuming that n node in the area s, then all nodes are wide in the area s
It finishes into before, the area s+1 node is in reception state.The relay node default setting of all nodes in 1st area is gateway, i.e. 1st area
Directly transmit data to gateway.
Reselect relay node time slot allocation: this time slot section Hi=N, same satisfaction are that each node distribution one is single
Time slot.The time slot that the number that n node is arranged is n is time slot, and in upper primary time slot, trunk node selection is lost
The sensor node lost can reselect relay node in the time slot.In the rail traffic vehicles scene of 8, each area node
Under, a relay node most multipotency possesses two child nodes, therefore can centainly select in one to each node for the second time
After node.Assuming that n node, before all node broadcasts are completed in the area s+1, the area Ze s+1, the area s node is in reception shape
State, the i.e. area s node will receive the broadcast packet that information is selected with second of relay node of the area s+1 node.
Data transmission slots distribution: this time slot section Hi=N.The same RTC clock is written in first time slot in all nodes
Value, the RTC completed between node are synchronous.The number that n node is arranged is HiThe time slot of-n+1 is sending time slots, and node is sent out in the time slot
Give the data of oneself to relay node.Each relay node select oneself for the sending time slots of several child nodes of relay node
In reception state, son node number evidence is received.
Suspend mode time slot allocation: this time slot section HiIt can be according to present node remaining capacity unrestricted choice.All nodes of the time slot
Into dormant state, for reducing the power consumption of sensor node, while restoring for the electricity of chargeable energy-storage travelling wave tube.
Embodiment two
The track train operation data acquiring and transmission system provided based on the above embodiment, the present embodiment provides a kind of acquisitions
Transmission method, it is shown in Figure 5, comprising:
S2: the controller of each sensor node controls corresponding sensor node and enters dormant state.
S4: each sensor node is waken up after the arrival of preset first wake up time period.
First wake up time period can be 0.5 hour, naturally it is also possible to and it is 20 minutes, 1 hour etc., specifically, can
To wake up sensor node by RTC alarm clock event.
S6: the controller of each sensor node acquires the voltage of respectively chargeable energy-storage travelling wave tube.
S8: judging whether the voltage of chargeable energy-storage travelling wave tube is greater than predetermined voltage threshold, if so, going to S10, otherwise goes to
S2。
Whether in operating status S10: judging track train, if so, going to S12, otherwise goes to S2.
It can judge that train is in static in the present embodiment by the vibration data of the track train of sensor acquisition
State or operating status.
S12: the operation data of the corresponding sensor difference acquisition trajectory train of each sensor node, by respectively corresponding to
Wireless transport module send the operation data respectively acquired to gateway after, be again introduced into S2.
Here it is specifically described so that sensor is 3-axis acceleration sensor as an example, 3-axis acceleration sensor can be adopted
The data for collecting 1s duration, select 2048 data points to do Fourier transformation, find out highest five frequencies of spectral component value, will frequency
Rate value is as load data, and according to the network layer of the MAC layer format of IEEE802.15.4 agreement and WirelessHart agreement
Format carrys out package, in some embodiments, can be directly entered transmission state at this time, but in some other embodiment, passes
Sensor node can be again introduced into dormant state, and after the first wake up time period, sensor node is waken up, if
Chargeable energy-storage travelling wave tube voltage is greater than predetermined voltage threshold and train is in operating status, and sensor node enters back into transmission shape
State.In transmission process, sensor node initializes slot table, in the time slot of slot table arrangement, completes neighbor node first
The acquisition of information sends broadcast in defined time slot and informs neighbor node self information, monitors in defined monitoring time slot
The broadcast of neighbor node, after the acquisition for completing information of neighbor nodes, node will select relaying according to the intensity value for receiving signal
Node, meanwhile, in the slot index that the broadcast of defined time slot notifies oneself data of the relay node to transmit, relay node is received
The notice records the label of the child node, completes entire trunk node selection process, finally, in data transmission slots, relaying section
Point will be in reception state in the data transmission slots of child node, receive the data that child node is sent.Data will pacify according to time slot
Row is sent to gateway via multi-hop, to complete the transmission of data.It will be specifically introduced later during this is specific.
Optionally, before step S2, can with the following steps are included:
S0: each sensor node internal module initialization；
S1: time service equipment gives each sensor node synchronous RTC clock, until the RTC clock one of all sensor nodes
It causes.
Optionally, upon step s 2, can with the following steps are included:
S3: each sensor node is waken up after the arrival of preset second wake up time period.
S5: each sensor node selects respective battery as respective RTC clock power supply source.
S7: each sensor node sends broadcast packet, and light broadcasts the RTC clock information in packet comprising respective sensor node,
After completion RTC is synchronized, it is again introduced into S2.
Second wake up time period can be 24 hours, in other words, if up to 24 hours sensor nodes all in
If dormant state, sensor node will be waken up by RTC alarm clock event.No matter being super capacitor power supply or high-capacity lithium at this time
Ion battery power supply, regardless of train is currently at static or operating status, node requires to send to be believed with oneself RTC clock
The broadcast packet of breath is realized the RTC synchronization of all the sensors node with this, avoids the RTC as caused by the error of crystal oscillator itself
The inconsistent problem of clock.All the sensors node is completed to be again introduced into dormant state after RTC is synchronized, and waits next time by RTC
Alarm clock event wakes up.So far, sensor node completes all working of a cycle.
Sensor node in the present embodiment can by with the distance between gateway subregion, except the area nearest apart from the gateway
In addition, the corresponding sensor node in each area selects at least one sensor node to save as relaying from the target adjacent area in the area
Point undertakes reception and forwards the task of operation data, until the collected operation data of each sensor node is successively sent to phase
The gateway answered, the target adjacent area in each area are the adjacent area that gateway described in distance is nearest in two adjacent areas in the area, each sensor section
Point transmits the operation data respectively acquired based on TDMA agreement, and step may refer to shown in Fig. 6, comprising:
S601: each sensor node broadcasted in corresponding first time slot itself address information and signal it is strong
Degree.
S602: the corresponding sensor node in each area selects to possess strongest received signal value from the target adjacent area in the area
Sensor node is as relay node.
S602: each relay node in corresponding second time slot to select the node as relay node
Whether sensor node feeds back it chosen successfully.
S603: each sensor node broadcasted in corresponding third time slot itself address information and signal it is strong
Degree, so that the sensor node of last selection relay node failure reselects relay node.
S604: each sensor node sends corresponding operation data in corresponding sending time slots and saves to corresponding relaying
Point, so that all operation datas are transferred to corresponding gateway.
It is noted that herein, the terms "include", "comprise" or its any other variant are intended to non-exclusive
Property include so that include a series of elements process, method, article or device not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or device it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that wanted including this
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In conclusion system described in the embodiment of the present invention will be vibrated by the vibrational energy collector in sensor node
The mechanical energy of generation is converted into electric energy and is transferred to chargeable energy-storage travelling wave tube and stored, the controller in respective sensor node
Chargeable energy-storage travelling wave tube or battery are selected as main power supply according to the voltage swing of chargeable energy-storage travelling wave tube to be powered, and are sensed
The operation data of device acquisition trajectory train during track train operation, and the data are transmitted by wireless transport module
To gateway, analyzed so that the operation data is transferred to server by gateway, wherein multiple sensor nodes and gateway are all set
Set on track train, thus sensor node can timely automatic collection track train operation data, and transmitted
To gateway, it is possible to reduce put into the human resources that the operating condition of track train is monitored.
Controller can be in non-operating state in track train, or detect that the voltage of chargeable energy-storage travelling wave tube is less than
Corresponding sensor node is controlled when predetermined voltage threshold and enters dormant state, so as to reduce the function of sensor node
Consumption；In addition, dormant state can also be entered all sensor nodes complete the transmission of an operation data together after, this
The energy-efficient mode of kind provides energy for the monitoring running state of track train and guarantees, extend sensor node uses the longevity
Life, effectively reduces the maintenance cost of track train.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of operation data acquiring and transmission system of track train, which is characterized in that
Including the gateway and multiple sensor nodes being arranged on the track train, each sensor node includes:
Controller, sensor, wireless transport module, chargeable energy-storage travelling wave tube, vibrational energy collector and battery, in which:
The vibrational energy collector, the mechanical energy for generating wheel hub vibration be converted into electric energy and be transferred to it is described can
Charging energy-storing element is stored；
The controller, for described in the selection when the voltage for detecting the chargeable energy-storage travelling wave tube is greater than predetermined voltage threshold
Chargeable energy-storage travelling wave tube is less than or equal to predeterminated voltage threshold as main power supply, in the voltage for detecting the chargeable energy-storage travelling wave tube
Select the battery as main power supply when value；
The sensor, for acquiring the operation data of the track train during track train operation；
The wireless transport module, for the operation data to be transmitted to the gateway；
The gateway, for the operation data received to be sent to server.
2. track train operation data acquiring and transmission system as described in claim 1, which is characterized in that
When the controller detects that the track train is in non-operating state, and the voltage of the chargeable energy-storage travelling wave tube is small
When being equal to predetermined voltage threshold, controller controls corresponding sensor node and enters dormant state, and periodically wakes up institute
Sensor node is stated, while detecting the voltage of the chargeable energy-storage travelling wave tube and the operating condition of the track train, and according to
The operating condition of the voltage of the chargeable energy-storage travelling wave tube and the track train to the working condition of the sensor node into
Row control.
3. track train operation data acquiring and transmission system as claimed in claim 2, which is characterized in that when the controller is examined
Measure that the track train is in operating status, and when the voltage of the chargeable energy-storage travelling wave tube is greater than predetermined voltage threshold, institute
It states controller and controls the operation data that the sensor acquires the track train, and institute is transmitted by the wireless transport module
State operation data.
4. track train operation data acquiring and transmission system as described in claim 1, which is characterized in that the chargeable energy storage
Element is super capacitor, and the sensor is 3-axis acceleration sensor, and the battery is lithium ion battery, the wireless transmission
Module is radio-frequency module.
5. track train operation data acquiring and transmission system according to any one of claims 1-4, which is characterized in that the biography
Sensor node presses the distance between gateway subregion, in addition to the subregion nearest apart from the gateway, other each subregions
Corresponding sensor node selects at least one sensor node as relay node from the target adjacent area of the subregion, receives simultaneously
Operation data is forwarded, until the collected operation data of each sensor node is successively sent to corresponding gateway, each subregion
Target adjacent area be gateway described in distance is nearest in two adjacent sectors of the subregion subregion.
6. track train operation data acquiring and transmission system as claimed in claim 5, which is characterized in that
The compartment head and compartment tail of the track train are each provided with a gateway, and a biography is both provided at each wheel position
Sensor node, each subregion are in two section compartment intersections, and the sensor node of the preset dividing line two sides of track train is used for
Collected operation data is transmitted to the gateway of the gateway of the compartment head and the compartment tail respectively.
7. a kind of adopted using track train operation data acquiring and transmission system as claimed in any one of claims 1 to 6 progress data
Collect the method for transmission characterized by comprising
Step S110: the controller of each sensor node controls corresponding sensor node and enters dormant state；
Step S120: each sensor node is waken up after the arrival of preset first wake up time period；
Step S130: the controller of each sensor node acquires the voltage of respectively chargeable energy-storage travelling wave tube；
Step S140: judging whether the voltage of chargeable energy-storage travelling wave tube is greater than predetermined voltage threshold, if so, step S150 is gone to,
Otherwise, step S110 is gone to；
Whether in operating status step S150: judging track train, if so, then going to step S160, otherwise, goes to step
S110；
Step S160: the corresponding sensor of each sensor node acquires the operation data of the track train respectively, logical
It crosses after corresponding wireless transport module sends the operation data respectively acquired to the gateway, is again introduced into step
S110。
8. the collecting and transmitting method of track train operation data acquiring and transmission system as claimed in claim 7, which is characterized in that
Before the step S110, further includes:
Initialize each sensor node；Time service equipment gives each sensor node synchronous RTC clock, until all
The RTC clock of the sensor node is consistent.
9. the collecting and transmitting method of track train operation data acquiring and transmission system as claimed in claim 7, which is characterized in that
Further include:
Each sensor node is waken up after the arrival of preset second wake up time period；Each sensor node selection is each
From power supply of the battery as respective RTC clock；Each sensor node sends broadcast packet, and it includes pair that the light, which is broadcast in packet,
The RTC clock information of inductive sensing device node is again introduced into step S110 after completing RTC and synchronizing.
10. such as the collecting and transmitting method of the described in any item track train operation data acquiring and transmission systems of claim 7-9,
Be characterized in that, the sensor node press with the distance between gateway subregion, except the subregion nearest apart from the gateway with
Outside, the corresponding sensor node of each subregion selects at least one sensor node to save as relaying from the target adjacent area in the area
Point receives and forwards operation data, until the collected operation data of each sensor node is successively sent to corresponding gateway,
The target adjacent area of each subregion is the subregion that gateway described in distance is nearest in two adjacent sectors of the subregion, each sensor
Node transmits the operation data respectively acquired based on TDMA agreement, and step includes:
Each sensor node broadcasts the address information and signal strength of itself in corresponding first time slot；
The corresponding sensor node of each subregion selects the sensor for possessing strongest received signal value from the target adjacent area in the area
Node is as relay node；
Each relay node is in corresponding second time slot to selecting sensor section of the node as relay node
Whether point feeds back it chosen successfully；
Each sensor node broadcasts the address information and signal strength of itself in corresponding third time slot, with
Relay node is reselected for the sensor node of last selection relay node failure；
Each sensor node sends corresponding operation data to corresponding relay node in corresponding sending time slots, from
And all operation datas are transferred to corresponding gateway.
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