CN105353207A - Train operation energy consumption metering system based on ZigBee - Google Patents
Train operation energy consumption metering system based on ZigBee Download PDFInfo
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- CN105353207A CN105353207A CN201510662001.7A CN201510662001A CN105353207A CN 105353207 A CN105353207 A CN 105353207A CN 201510662001 A CN201510662001 A CN 201510662001A CN 105353207 A CN105353207 A CN 105353207A
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Abstract
The invention disclose a train operation energy consumption metering system based on ZigBee, and the system comprises a main control module, an electric signal measurement module, a ZigBee network module, a wireless data transmission module, and an auxiliary function module. The main control module controls the execution of related functions of other modules. The electric signal measurement module completes the data collection and calculation functions. The ZigBee network module builds and maintains the ZigBee network, and receives and gathers energy consumption data transmitted by the electric signal measurement module. The ZigBee network is used for transmitting the energy consumption data, and enables the energy consumption data to be transmitted to the main control unit through a serial port. The wireless data transmission module achieves the non-contact type transmission of storage data of the system. The system can achieve the off-line collection of electric energy consumption data information of urban rail trains in an operation process, gathers and transmits energy consumption data through the ZigBee network, irons out defects of extensive-type statistics of electric energy in the prior art, improves the data precision, and provides a data collection tool for operation energy consumption of the urban rail trains.
Description
Technical field
The present invention relates to train energy consumption technical field, particularly relate to a kind of energy consumption in train journey metering system based on ZigBee.
Background technology
Along with the fast development of urban track traffic, energy resource consumption total amount also increases thereupon.City rail train energy consumption accounts for about 50% of system total energy consumption, reduces energy consumption in train journey and becomes the effective means cut operating costs.The method reducing city rail train energy consumption is a lot, but the energy-saving effect of often kind of power-economizing method lacks an effective measurement means.At present, special operation energy consumption metadata acquisition tool generally do not installed by urban rail transit in China train, but carries out the extensive style statistics of electricity by existing failure detector.
The data inconvenience of above-mentioned extensive style statistical is used for the assessment of energy-saving effect, and the result of usually adding up can not meet the standard of energy consumption in train journey metering, and therefore, it is very necessary for developing a kind of high efficiency energy consumption in train journey metering system specially.
Summary of the invention
The embodiment provides a kind of energy consumption in train journey metering system based on ZigBee, to realize effectively gathering city rail train energy consumption data.
To achieve these goals, this invention takes following technical scheme.
Based on an energy consumption in train journey metering system of ZigBee, comprising: main control unit, electric signal measurement module, ZigBee-network module and wireless data transfer module;
Described main control unit, for being electrically connected with described electric signal measurement module, ZigBee-network module and wireless data transfer module respectively, controls operation and the stopping of described electric signal measurement module, ZigBee-network module and wireless data transfer module;
Described electric signal measurement module, for comprising electric energy computation chip, described electric energy computation chip is connected with the data output end of the mutual inductor of municipal rail train, the energy consumption data that the data output end gathering described mutual inductor exports, analog-to-digital conversion process is carried out to described energy consumption data, the energy consumption data after analog-to-digital conversion process is transferred to described ZigBee-network module;
Described ZigBee-network module, for setting up and safeguarding ZigBee-network, comprise ZigBee terminal device, ZigBee routing device and ZigBee coordinator unit, described ZigBee terminal device is electrically connected with described electric signal measurement module, receive the energy consumption data that described electric signal measurement module sends, described energy consumption data is sent to described ZigBee coordinator unit by ZigBee-network, described ZigBee coordinator unit is connected with described main control unit serial ports, by described energy consumption data Serial Port Transmission to described main control unit;
Described wireless data transfer module, for being electrically connected with described main control unit, is transferred to distance host by GPRS communication network by the energy consumption data that described main control unit transmits.
Further, described ZigBee coordinator unit, for carrying out energy scan to all channels, by energy loss lower than setting the channel reporting of threshold value to network layer, described network layer selectes the use channel of newly-built ZigBee-network, Stochastic choice PANID distributes to newly-built ZigBee-network, described network layer issues the PANID request of the MAC layer of carrying described use channel information to described ZigBee coordinator unit, receive after MAC layer that described ZigBee coordinator unit returns confirms, described network layer is reported to application layer, described newly-built ZigBee-network creates successfully, the channel of oneself is arranged to described use channel by described ZigBee terminal device and described ZigBee routing device, add described newly-built ZigBee-network.
Further, described ZigBee terminal device, for after adding described newly-built ZigBee-network, the energy consumption data of described electric signal measurement module transmission is read according to the time interval of setting, after being gathered by the energy consumption data of reading, send to described ZigBee coordinator unit by described newly-built ZigBee-network.
Further, described ZigBee routing device, for after adding described newly-built ZigBee-network, data interaction is carried out by described newly-built ZigBee-network and described ZigBee coordinator unit, described ZigBee terminal device, the routing interface of expansion is set, to the sensor used be needed to be connected on the routing interface of expansion, the sensor not needing to use is removed from the routing interface of expansion.
Further, described ZigBee terminal and described ZigBee router adopt powered battery, and described ZigBee coordinator unit adopts Power supply.
Further, described system also comprises:
Clock module, for the time synchronized between finishing device and standard time source;
AccessPort module, for providing the spare interface of test and data transmission;
Described power module, for providing required electric energy for device.
Further, described system also comprises:
Described supplemental functionality, indicates for providing battery low-electricity quantity and the shift knob of Wireless Data Transmission operates.
Further, described electric signal measurement module comprises:
Electric current input channel: the current signal exported for received current mutual inductor, by described current signal transfer to electric current ADC;
Voltage input channel: for the voltage signal exported after receiving electric resistance partial pressure, described voltage signal is transferred to voltage ADC;
Electric current ADC: the current signal for transmitting described electric current input channel carries out A/D conversion, obtains transient current sampled value, is transferred to power computation module by described transient current sampled value;
Voltage ADC: the voltage signal for transmitting described voltage input channel carries out A/D conversion, obtains transient voltage sampled value, is transferred to power computation module by described transient voltage sampled value;
Power computation module, for utilizing multiple transient voltage sampled value, current sampling data calculates the effective value of voltage signal respectively and the effective value of current signal, the effective value of described voltage signal is multiplied with the effective value of current signal and obtains instantaneous power, multiple instantaneous power is averaged and obtains power effective value, multiple instantaneous power is carried out add up and obtain accumulative power consumption values, the effective value of the effective value of the sampled value of described voltage/current signals, voltage/current signals, power, accumulative power consumption values are transferred to register as energy consumption data;
Register, for storing the energy consumption data that described power computation module transmits;
Serial line interface, is provided for MCU and reads the data of described register by serial line interface and be written in described storer.
Further, described electric signal measurement module also comprises:
Electric energy to frequency converter, for exporting the sample frequency of electric signal measurement module.
The technical scheme provided as can be seen from the embodiment of the invention described above, application the present invention can gather electric energy energy consumption data information in city rail train process by off-line, and gathered by ZigBee-network and transmit energy consumption data, improve the drawback of prior art electricity extensive style statistics, improve the precision of data, for city rail train energy consumption assessment provides a kind of metadata acquisition tool, for the research of urban track traffic energy saving optimizing creates convenience.
The aspect that the present invention adds and advantage will part provide in the following description, and these will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of energy consumption in train journey metering system based on ZigBee that Fig. 1 provides for the embodiment of the present invention, in figure, MCU (MicrocontrollerUnit, main control unit) (10), electric signal measurement module (20), ZigBee-network module 30, wireless data transfer module 40, clock module 50, AccessPort module 60, power module 70 and supplemental functionality 80;
The structural representation of a kind of electric signal measurement module that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in instructions of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
For ease of the understanding to the embodiment of the present invention, be further explained explanation below in conjunction with accompanying drawing for several specific embodiment, and each embodiment does not form the restriction to the embodiment of the present invention.
For the shortcoming of current municipal rail train extensive style electricity statistics, embodiments provide a kind of energy consumption in train journey metering system based on ZigBee, can be applicable to the collection of energy consumption data in municipal rail train actual moving process, calculating and storage, and the data of reading device storage in a non contact fashion after train operation terminates, for the assessment of city rail train energy consumption provides Data support.
The structural representation of the energy consumption in train journey metering system based on ZigBee of the embodiment of the present invention as shown in Figure 1, comprise: MCU (MicrocontrollerUnit, main control unit) 10, electric signal measurement module 20, ZigBee-network module 30, clock module 50, AccessPort module 60, wireless data transfer module 40, power module 70 and supplemental functionality 80.
Described MCU unit, for being electrically connected with described electric signal measurement module, ZigBee-network module and wireless data transfer module respectively, controls operation and the stopping of described electric signal measurement module, ZigBee-network module and wireless data transfer module.Can the execution of other functions of modules in conditioning unit, debug and Wireless Data Transmission comprising the storage of the collection of electric signal, data, set of time and display, serial data.MCU can select 8 High Performance SCM chip STM8S207.
Described electric signal measurement module, for comprising electric energy computation chip, described electric energy computation chip is connected with the data output end of the mutual inductor of municipal rail train, the energy consumption data that the data output end gathering described mutual inductor exports, analog-to-digital conversion process is carried out to described energy consumption data, the energy consumption data after analog-to-digital conversion process is transferred to described ZigBee-network module.
Described ZigBee-network module, for setting up and safeguarding ZigBee-network, comprise ZigBee terminal device 301, ZigBee routing device 302 and ZigBee coordinator unit 303, described ZigBee terminal device is electrically connected with described electric signal measurement module, receive the energy consumption data that described electric signal measurement module sends, described energy consumption data is sent to described ZigBee coordinator unit by ZigBee-network, described ZigBee coordinator unit is connected with described main control unit serial ports, by described energy consumption data Serial Port Transmission to described main control unit;
Described wireless data transfer module, for being electrically connected with described main control unit, is transferred to distance host by GPRS communication network by the energy consumption data that described main control unit transmits.
Further, described ZigBee coordinator unit, for carrying out energy scan to all channels, by energy loss lower than setting the channel reporting of threshold value to network layer, described network layer selectes the use channel of newly-built ZigBee-network, Stochastic choice PAN (PersonalAreaNetwork, PAN (Personal Area Network)) ID distributes to newly-built ZigBee-network, described network layer issues the PANID request of the MAC layer of carrying described use channel information to described ZigBee coordinator unit, receive after MAC layer that described ZigBee coordinator unit returns confirms, described network layer is reported to application layer, described newly-built ZigBee-network creates successfully, the channel of oneself is arranged to described use channel by described ZigBee terminal device and described ZigBee routing device, add described newly-built ZigBee-network.
Described ZigBee terminal device, for after adding described newly-built ZigBee-network, the energy consumption data of described electric signal measurement module transmission is read according to the time interval of setting, after being gathered by the energy consumption data of reading, send to described ZigBee coordinator unit by described newly-built ZigBee-network.
Described ZigBee routing device, for after adding described newly-built ZigBee-network, data interaction is carried out by described newly-built ZigBee-network and described ZigBee coordinator unit, described ZigBee terminal device, the routing interface of expansion is set, to the sensor used be needed to be connected on the routing interface of expansion, the sensor not needing to use is removed from the routing interface of expansion.
Described ZigBee terminal and described ZigBee router adopt powered battery, and described ZigBee coordinator unit adopts Power supply.
Described ZigBee terminal, ZigBee router are identical with ZigBee telegon kernal hardware circuit design, and all adopt CC2530 chip, the difference of three is the design of power supply mode and data-interface.ZigBee terminal and ZigBee router are special due to installation site, can only select powered battery, so hardware design the most important thing is to consider power problems, eliminate unnecessary device when designing.The system of simplifying can reduce design risk and debugging difficulty, improves simultaneously and is designed to power.The routing interface of expansion has been reserved in the design of ZigBee router circuit, sensor can be connected on the routing interface of the expansion of acquisition node, when needing certain sensor, it being connected with the routing interface expanded, not needing during certain sensor, it to be removed from the routing interface expanded.The task of ZigBee telegon is responsible for setting up and maintaining network, wants continuous firing with maximum not being both of ZigBee terminal, can not power-off, so directly adopt Power supply during the design of ZigBee telegon, eliminates the design of battery circuit.ZigBee telegon also has an important task to be exported by digital serial port.The selection that serial data interface is general has MAX232, MAX485 and USB port, the convenience of the embodiment of the present invention in order to debug, and selects PL2303 chip that serial data is changed into USB port.
Described electric signal measurement module is formed primarily of electric energy computation chip, comprising voltage transformer (VT), current transformer.Electric energy computation chip is connected with the data output end of the mutual inductor of municipal rail train, electric current, voltage data that the data output end gathering described mutual inductor exports, analog-to-digital conversion process is carried out to electric current, voltage data, energy consumption data is calculated according to the data after analog-to-digital conversion process, energy consumption data is transferred to storer, and this energy consumption data comprises time, voltage, electric current, power and accumulative power consumption values.The type selecting of voltage transformer (VT), current transformer then can make corresponding adjustment according to the difference of measurand.During device work, electric energy computation chip can read mutual inductor data with the frequency of 200ms, to carry out result after correlation computations stored in storer.The mutual inductor type selecting relevant to device data acquisition includes but not limited to the detachable mutual inductor of Hall, can adjust accordingly according to the difference of measurand.
Electric signal measurement model choice electric energy computation chip CS5463, the structural representation of a kind of electric signal measurement module that the embodiment of the present invention provides as shown in Figure 2, comprise two analog-digital converters (ADC), power computation module, electric energy to the complete power measurement chip of frequency converter and a serial line interface, above-mentioned two ADC comprise electric current ADC and voltage ADC.CS5463 accurately can measure the data such as instantaneous voltage, electric current and calculating IRMS, VRMS, instantaneous power.
As shown in Figure 2, described electric signal measurement module comprises:
Electric current input channel: the 0-20mA current signal exported for received current mutual inductor, by described current signal transfer to electric current ADC;
Voltage input channel: for the voltage signal exported after receiving precision resistance dividing potential drop, described voltage signal is transferred to voltage ADC;
Electric current ADC: the current signal for transmitting described electric current input channel carries out A/D conversion, obtains transient current sampled value, is transferred to power computation module by described transient current sampled value;
Voltage ADC: the voltage signal for transmitting described voltage input channel carries out A/D conversion, obtains transient voltage sampled value, is transferred to power computation module by described transient voltage sampled value;
Power computation module, for utilizing multiple transient voltage sampled value, current sampling data calculates the effective value of voltage signal respectively and the effective value of current signal, the effective value of described voltage signal is multiplied with the effective value of current signal and obtains instantaneous power, multiple instantaneous power is averaged and obtains power effective value, multiple instantaneous power is carried out add up and obtain accumulative power consumption values, the effective value of the effective value of the sampled value of described voltage/current signals, voltage/current signals, power, accumulative power consumption values are transferred to register as energy consumption data;
Serial line interface, is provided for MCU and reads the data of described register by serial line interface and be written in described storer.
Electric energy to frequency converter, for exporting the sample frequency of electric signal measurement module.
Described clock module, for display (401) and the setting of time (402) of generator time, the time synchronized between finishing device and standard time source.This device is off-line type data acquisition, cannot with train control system real-time information interaction, therefore before device busy, need the time synchronized between artificial finishing device and standard time source, reach the consistance of time between device.The time showing part of device is used for the time synchronized of servicing unit, and for saving battery electric quantity, after time synchronized terminates, time display function is closed.Clock module when carrying out time synchronized with standard time source device, the device number of record standard time source, and with last time time synchronized device number contrast, when contrasting consistent, the time synchronized of automatic finishing device; Provide warning information time inconsistent, and manually determine whether to proceed time synchronized.The time synchronized of device includes but not limited to manual type, when can take automated manner pair when there is the interactive interface with train control system.
Described wireless data transfer module, for being electrically connected with MCU, is transferred to external unit by cordless communication network by the energy consumption data that storer stores.Wireless transport module adopts the wireless communication technologys such as WiFi technology, Bluetooth technology, ZigBee technology, and wirelessly transmitting data between implement device and external unit, realizes the transmission of non-contact data between handheld device and device.During the data needing reading device to store, the first data transfer switch of device for opening, when external unit enters in device certain limit, is automatically connected with device, and completes the wireless transmission of data.
Described AccessPort module, for the test of device and the spare interface of data transmission.Device, before devoting oneself to work, needs test device being carried out to correlation function, and AccessPort module provides RS232 interface and the debugging computer data communication of standard, the calibrating of the time synchronized of finishing device, the reading of data and accuracy.
Described power module, for providing required electric energy for device, because device installation environment temporarily cannot provide external power interface, device adopts lithium battery power supply.The power supply of device includes but not limited to powered battery, can take other forms of power supply when conditions permit.
Described supplemental functionality, for the shift knob operation of the mainly low battery capacity indication of device battery and Wireless Data Transmission.When battery electric quantity is lower than setting, the low alarm lamp flicker of installation's power source electricity; During the data stored when needing reading device, open Wireless Data Transmission switch.The low alarm sounds of electric quantity of power supply includes but not limited to light form, the form that can also select a sound and other forms;
The embodiment of the present invention is arranged in the main power switch case of municipal rail train based on the energy consumption in train journey metering system of ZigBee.When this system has accurate couple an of GPS, operation energy consumption data acquisition gathers and data wireless transfer function.Its ultimate principle is, when device completes accurate pair with GPS before devoting oneself to work, and keeping system intermodule time synchronized; In train travelling process, system gathers traction voltage, current data by voltage, current transformer, gather to master control list through ZigBee-network after electrical measuring module conversion, calculating, main control unit will send to Wireless Data Transmission to carry out data wireless transmission after data processing.
Mainly manually complete when system and GPS couple, this is operated in before system puts into operation and carries out, system and GPS pair time ensure the information fusion of disparate modules data.Its main process is as described below:
(1) open system time showing and function is set;
(2) by GPS module, time contrast, correction is carried out, during accurate pair of completion system;
Pair (3) after terminating time, shutdown system time showing and function is set.
The foundation of ZigBee-network:
The incipient stage that system is being run, equipment sets up ZigBee-network automatically, and build the path of data transmission, detailed process is as described below:
(1) coordinator unit initialization network.In Zigbee protocol, only has telegon ability New-deployed Network.If not telegon, then stop the process of establishing of network; If so, then the scanning of energy is carried out.Energy scan scans all channels, select energy loss lower as the alternate channel setting up network.After finding available channel, proceed to activate scanning, be reported to network layer after finding suitable channel, network layer is selected uses channel, and Stochastic choice PANID distributes to New-deployed Network.Network layer issues MAC layer PANID request, and after receiving MAC layer confirmation, network layer is reported to application layer, network creation success.
(2) terminal and router add network.Telegon when other ordinary nodes add network, as long as be arranged to by the channel of oneself identical with the channel that existing telegon uses, and provides correct authentication information, can ask to add network after starting.After a node adds network, the short MAC Address of oneself can be obtained from its father node, the topological parameter that ZigBee-network address and telegon specify.
(3) communication of ZigBee-network.First protocol stack carries out system initialization after entering master routine, and after completing initialization task, protocol stack enters operating system, and the task that must be performed by poll scan for inquiries, system always scan round is gone down.
Operation energy consumption data acquisition:
After system completes the establishment of ZigBee-network, duty can be entered.Its main process is as described below:
(1), after terminating during system pair, the continuous acquisition of city rail train energy consumption data is namely entered;
(2) ZigBee terminal device reads electrical measuring module data with the time interval of 200ms;
(3) data gather to ZigBee coordinator unit through ZigBee-network, and serial ports outputs to main control unit.
Data wireless transmits:
Train is in operational process, and the energy consumption data gathered can be passed through GPRS technical transmission, system and distance host connect, and complete the real-time transmission of data.Its prevailing transmission flow process is as described below:
(1) system and distance host are set up GPRS and are connected;
(2) main control unit carries out the conversion of form to the data that ZigBee telegon serial ports sends;
(3) main control unit sends data to wireless data transfer module, and data are sent to distance host by wireless data transfer module.
Battery low-electricity quantity alarm:
The MCU of system carries out periodicity to power module electricity and detects, and when electricity is lower than setting, battery low-electricity quantity pilot lamp glimmers, and give the alarm prompting message.
In sum, the energy consumption in train journey metering system tool based on ZigBee of the embodiment of the present invention has the following advantages:
1: system long-time continuous can gather energy consumption data in train travelling process and real-time Transmission, the collection of data, conversion and calculating meet certain accuracy requirement, the result of statistics meets the standard of energy consumption in train journey metering, can conveniently for the assessment of energy-saving effect;
Application the present invention can online acquisition and the electric energy energy consumption data information that receives in city rail train process, in internal system, gathered by ZigBee-network and transmit the electric energy energy consumption data gathered, and wirelessly distance host externally sends electric energy energy consumption data, improve the drawback adopting train fault pick-up unit to carry out electricity extensive style statistics, improve the precision of data, for city rail train energy consumption assessment provides a kind of metadata acquisition tool, for the research of urban track traffic energy saving optimizing creates convenience.
2: system can with accurate couple of GPS time, ensure time consistency between disparate modules, conveniently complete the fusion of data, make system image data can with train operation operating mode real-time matching, to present in operational process power consumption situation under different operating mode comparatively intuitively;
3: system automatically can be set up GPRS with distance host and be connected, and automatically completes the wireless transmission of data.
4: this device volume is little, shock resistance is strong, Electro Magnetic Compatibility is good, installation is simple, on original mobile unit without impact.
5: this device volume is little, shock resistance is strong, Electro Magnetic Compatibility is good, installation is simple, on original mobile unit without impact.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the present invention or embodiment.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for device or system embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.Apparatus and system embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. based on an energy consumption in train journey metering system of ZigBee, it is characterized in that, comprising: main control unit, electric signal measurement module, ZigBee-network module and wireless data transfer module;
Described main control unit, for being electrically connected with described electric signal measurement module, ZigBee-network module and wireless data transfer module respectively, controls operation and the stopping of described electric signal measurement module, ZigBee-network module and wireless data transfer module;
Described electric signal measurement module, for comprising electric energy computation chip, described electric energy computation chip is connected with the data output end of the mutual inductor of municipal rail train, the energy consumption data that the data output end gathering described mutual inductor exports, analog-to-digital conversion process is carried out to described energy consumption data, the energy consumption data after analog-to-digital conversion process is transferred to described ZigBee-network module;
Described ZigBee-network module, for setting up and safeguarding ZigBee-network, comprise ZigBee terminal device, ZigBee routing device and ZigBee coordinator unit, described ZigBee terminal device is electrically connected with described electric signal measurement module, receive the energy consumption data that described electric signal measurement module sends, described energy consumption data is sent to described ZigBee coordinator unit by ZigBee-network, described ZigBee coordinator unit is connected with described main control unit serial ports, by described energy consumption data Serial Port Transmission to described main control unit;
Described wireless data transfer module, for being electrically connected with described main control unit, is transferred to distance host by GPRS communication network by the energy consumption data that described main control unit transmits.
2. the energy consumption in train journey metering system based on ZigBee according to claim 1, is characterized in that;
Described ZigBee coordinator unit, for carrying out energy scan to all channels, by energy loss lower than setting the channel reporting of threshold value to network layer, described network layer selectes the use channel of newly-built ZigBee-network, Stochastic choice PANID distributes to newly-built ZigBee-network, described network layer issues the PANID request of the MAC layer of carrying described use channel information to described ZigBee coordinator unit, receive after MAC layer that described ZigBee coordinator unit returns confirms, described network layer is reported to application layer, described newly-built ZigBee-network creates successfully, the channel of oneself is arranged to described use channel by described ZigBee terminal device and described ZigBee routing device, add described newly-built ZigBee-network.
3. the energy consumption in train journey metering system based on ZigBee according to claim 2, is characterized in that;
Described ZigBee terminal device, for after adding described newly-built ZigBee-network, the energy consumption data of described electric signal measurement module transmission is read according to the time interval of setting, after being gathered by the energy consumption data of reading, send to described ZigBee coordinator unit by described newly-built ZigBee-network.
4. the energy consumption in train journey metering system based on ZigBee according to claim 1, is characterized in that;
Described ZigBee routing device, for after adding described newly-built ZigBee-network, data interaction is carried out by described newly-built ZigBee-network and described ZigBee coordinator unit, described ZigBee terminal device, the routing interface of expansion is set, to the sensor used be needed to be connected on the routing interface of expansion, the sensor not needing to use is removed from the routing interface of expansion.
5. the energy consumption in train journey metering system based on ZigBee according to claim 1, is characterized in that, described ZigBee terminal and described ZigBee router adopt powered battery, and described ZigBee coordinator unit adopts Power supply.
6. the energy consumption in train journey metering system based on ZigBee according to claim 1, it is characterized in that, described system also comprises:
Clock module, for the time synchronized between finishing device and standard time source;
AccessPort module, for providing the spare interface of test and data transmission;
Described power module, for providing required electric energy for device.
7. the energy consumption in train journey metering system based on ZigBee according to claim 1, it is characterized in that, described system also comprises:
Described supplemental functionality, indicates for providing battery low-electricity quantity and the shift knob of Wireless Data Transmission operates.
8. the energy consumption in train journey metering system based on ZigBee according to any one of claim 1 to 7, is characterized in that, described electric signal measurement module comprises:
Electric current input channel: the current signal exported for received current mutual inductor, by described current signal transfer to electric current ADC;
Voltage input channel: for the voltage signal exported after receiving electric resistance partial pressure, described voltage signal is transferred to voltage ADC;
Electric current ADC: the current signal for transmitting described electric current input channel carries out A/D conversion, obtains transient current sampled value, is transferred to power computation module by described transient current sampled value;
Voltage ADC: the voltage signal for transmitting described voltage input channel carries out A/D conversion, obtains transient voltage sampled value, is transferred to power computation module by described transient voltage sampled value;
Power computation module, for utilizing multiple transient voltage sampled value, current sampling data calculates the effective value of voltage signal respectively and the effective value of current signal, the effective value of described voltage signal is multiplied with the effective value of current signal and obtains instantaneous power, multiple instantaneous power is averaged and obtains power effective value, multiple instantaneous power is carried out add up and obtain accumulative power consumption values, the effective value of the effective value of the sampled value of described voltage/current signals, voltage/current signals, power, accumulative power consumption values are transferred to register as energy consumption data;
Register, for storing the energy consumption data that described power computation module transmits;
Serial line interface, is provided for MCU and reads the data of described register by serial line interface and be written in described storer.
9. the energy consumption in train journey metering system based on ZigBee according to claim 8, is characterized in that, described electric signal measurement module also comprises:
Electric energy to frequency converter, for exporting the sample frequency of electric signal measurement module.
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