CN103729992A - Zigbee-based thread tension wireless monitoring system - Google Patents
Zigbee-based thread tension wireless monitoring system Download PDFInfo
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- CN103729992A CN103729992A CN201310684402.3A CN201310684402A CN103729992A CN 103729992 A CN103729992 A CN 103729992A CN 201310684402 A CN201310684402 A CN 201310684402A CN 103729992 A CN103729992 A CN 103729992A
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Abstract
The invention provides a Zigbee-based thread tension wireless monitoring system which comprises a cable tension monitoring node (1), a handheld terminal (2) and an upper computer (3), wherein the cable tension monitoring node (1) is used for monitoring the thread tension information from a preset spring compensation device through the Zigbee network, and sending the thread tension information to the handheld terminal (2); the handheld terminal (2) is used for displaying and storing the thread tension information and uploading the thread tension information to the upper computer (3) through a USB communication interface; the upper computer (3) is used for displaying, counting and analyzing the thread tension information and obtaining the working condition of the preset spring compensation device. According to the invention, the Zigbee wireless communication technology is adopted to send the thread tension information monitored by the cable tension monitoring node to the handheld terminal, and the handheld terminal can display the thread tension on the spot, and can also upload the thread tension to the upper computer for further statistic analysis through the USB communication interface.
Description
Technical field
The invention belongs to contact net clue tension compensating field in electric railway, particularly relate to a kind of thread tension force wireless monitor system based on ZigBee.
Background technology
The power resources of electric railway and urban track traffic are in electric power system contact net.When atmospheric temperature changes, the impact that contact net clue (osculatory and carrier cable) is expanded with heat and contract with cold can elongate or shorten, thereby clue internal tension is changed, and then its sag is also changed, finally cause it to be flowed worsening condition, affect the safe and stable operation of electric railway and urban track traffic.Therefore, need install compensating mechanism of contact net (claiming again automatic tension compensator or tension force autocompensation installation) additional.This device can automatically be adjusted the tension force of clue and keep clue sag to meet technical requirement, thereby the stability of contact suspension and elasticity are improved, and improves contact net quantity of operation.Compensating mechanism of contact net is that osculatory and carrier cable keep the constant important device of working tension when temperature Change, the suspension elasticity, contact net that its performance quality directly affects contact net is in the standard state of geometric space position etc., to reducing pantograph and catenary fault important in inhibiting.
Spring compensator be a kind of generally adopt compensating mechanism of contact net, be characterized in compact conformation, take up space little; Lightweight, easy for installation; Safe and reliable, long service life, and within useful life period Maintenance free; The feature of environmental protection is good, pollution-free, not pantograph size restrictions of while.Spring compensator can effectively compensate the tension force of head span suspension compensation, improves the reliability of head span suspension system, is the developing direction of compensating mechanism of contact net.But in actual application, once can user keep enough elasticity or break down and how to judge spring compensator its spring after repeatedly moving, still lack at present a kind of effectively technological means.
Summary of the invention
The invention provides a kind of thread tension force wireless monitor system based on ZigBee, can quantitative description spring compensator thread tension force change, for user provides quantification, reliable tension data, and then accurately judge whether thread tension force meets the demands.
The present invention is achieved by the following technical solutions:
A thread tension force wireless monitor system based on ZigBee, comprising: thread tension force monitoring node, handheld terminal and host computer;
Thread tension force monitoring node is used for from predetermined spring compensator, recording thread tension force information by Zigbee network, and described thread tension force information is sent to handheld terminal;
Handheld terminal is used for described thread tension force information show and store, and by usb communication interface, described thread tension force information is uploaded to host computer;
Host computer is used for described thread tension force information to show and statistical study, and obtains the working condition of predetermined spring compensator.
Beneficial effect of the present invention is that thread tension force thread tension force monitoring node being recorded by ZigBee wireless communication technology sends to handheld terminal, handheld terminal not only can show thread tension force on the spot, also can thread tension force be uploaded to host computer by USB interface and carry out further statistical study.
Accompanying drawing explanation
Fig. 1 is the structural representation of the thread tension force wireless monitor system based on ZigBee provided by the invention;
Fig. 2 is the result schematic diagram of thread tension force monitoring node provided by the invention;
Fig. 3 is the structural representation of handheld terminal provided by the invention;
Fig. 4 is the circuit connection diagram of the power module of thread tension force monitoring node provided by the invention and handheld terminal;
Fig. 5 is the circuit connection diagram of the radio-frequency module of thread tension force monitoring node provided by the invention and handheld terminal
Fig. 6 is the circuit connection diagram of serial ports/USB modular converter of handheld terminal provided by the invention.
Embodiment
In order more clearly to illustrate feature of the present invention and work ultimate principle, below in conjunction with drawings and Examples, the present invention will be described.
This embodiment provides a kind of thread tension force wireless monitor system based on ZigBee, as shown in Figure 1, comprising: thread tension force monitoring node 1, handheld terminal 2 and host computer 3;
Thread tension force monitoring node 1 is for recording thread tension force information by Zigbee network from predetermined spring compensator, and described thread tension force information is sent to handheld terminal 2;
Concrete, thread tension force monitoring node 1 is communicated by letter mutually by ZigBee communication protocol with handheld terminal 2, and handheld terminal 2 is communicated by letter mutually by usb communication agreement with host computer 3.Thread tension force monitoring node 1 and spring compensator are all installed on outdoor clue place, apart from ground 6.5-7 rice, the thread tension force inconvenience that thread tension force monitoring node 1 records shows that inconvenient operating personnel read in other words on the spot, therefore, the tension force recording can be sent to and on handheld terminal 2, shown and store by ZigBee-network, the effective communication distance of ZigBee-network can reach 15 meters, can meet field requirement completely.Handheld terminal 2 can obtain respectively thread tension force corresponding to all spring compensators in certain track section of railway by multiple thread tension force monitoring nodes 1.Handheld terminal 2, except showing on the spot the thread tension force of acquisition, also can be uploaded to host computer 3 by thread tension force by its usb communication interface and show and statistical study, thereby obtains the working condition of predetermined spring compensator.
Further, as shown in Figure 2, thread tension force monitoring node 1 comprises: tension pick-up and signal amplifier 11, node power module 12, node Zigbee chip 13(can adopt CC2530 chip), node radio-frequency module 14, nodal clock circuit 15 and node reset circuit 16, tension pick-up is connected with the signal input part of node Zigbee chip 13 with the signal output part of signal amplifier 11, the radiofrequency signal input/output terminal of node radio-frequency module 14 is connected with the radiofrequency signal I/O of node Zigbee chip 13, the clock signal output terminal of nodal clock circuit 15 is connected with the clock signal input terminal of node Zigbee chip 13, the reset signal output terminal of node reset circuit 16 is connected with the reset signal input end of node Zigbee chip 13, the power output end of node power module 12 is connected with the power input of amplifier 11 and node Zigbee chip 13 with sensor.
As shown in Figure 3, handheld terminal 2 comprises that terminal power module 21, terminal Zigbee module 22(can adopt CC2530 chip), terminal radio frequency module 23, terminal clock circuit 25, terminal reset circuit 26, LCD LCD MODULE 26, serial ports/USB modular converter 27, single-chip microcomputer 28(can adopt C8051F020 chip), keyboard 29, storer 210; the radiofrequency signal input/output terminal of terminal radio frequency module 23 is connected with the radiofrequency signal I/O of terminal Zigbee chip 22, the clock signal output terminal of terminal clock circuit 24 is connected with the clock signal input terminal of terminal Zigbee chip 22, the reset signal output terminal of terminal reset circuit 25 is connected with the reset signal input end of terminal Zigbee chip 22, the power output end of terminal power module 21 and terminal Zigbee module 22, LCD LCD MODULE 26 is connected with the power input of single-chip microcomputer 28, the first serial input/output terminal of terminal Zigbee module 22 is connected with the serial ports I/O of single-chip microcomputer 28, the display input/output terminal of single-chip microcomputer 28 is connected with the display input/output terminal of display module 26, the second serial input/output terminal of single-chip microcomputer 28 is connected with the serial ports I/O of serial ports/USB modular converter 27, the signal output part of keyboard 29 is connected with the signal output part of single-chip microcomputer 28, storer 210 store input/output terminal and single-chip microcomputer 28 storage input/output terminal be connected.
The peripheral pin of terminal Zigbee module 22 is limited, can not meet handheld terminal designing requirement completely.Therefore, adopt CC2530 chip and C8051F020 chip dual-cpu structure design handheld terminal, CC2530 chip is mainly responsible for realizing ZigBee communication (reception of thread tension force, the transmission of parameters), C8051F020 chip chief leading cadre machine mutual and and host computer between communicate by letter, between two CPU by its serial communication interface swap data.Storer (can adopt EEPROM) is responsible for the storage tension data and the system important parameter that record, even to guarantee that device/system power-off also do not lose.
As shown in Figure 4, in the circuit of the power module of clue tension monitoring node and handheld terminal, comprise 9V battery 121,9V-12V DC/DC booster circuit 122,12V-5V voltage conversion circuit 123,5V-3.3V voltage conversion circuit 123.Thread tension force monitoring node is installed on railway contact line clue place, do not allow from the power taking of contact net supply lines, and handheld terminal is for carrying, and therefore, thread tension force monitoring node and handheld terminal all adopt battery that power supply is provided.
As shown in Figure 5, in the circuit of the radio-frequency module of clue tension monitoring node and handheld terminal, comprise interface, antenna, CC2591 and peripheral circuit thereof between ZigBee chip.Radio-frequency module can increase its effective communication distance after adopting CC2591.Its maximum communication distance of radio circuit take discrete components such as resistance, electric capacity, inductance as main composition is as 75 meters of left and right, take CC2591 and peripheral circuit thereof as its communication distance of radio circuit of main composition, can reach 500 meters.
As shown in Figure 6, in the circuit of the serial ports/USB of handheld terminal modular converter, comprise interface, serial ports/USB conversion chip PL2303HX and peripheral circuit thereof, USB interface between single-chip microcomputer.ZigBee chip and single-chip microcomputer (C8051F020) are not all with USB controller, but are all with serial communication interface.So, by adopting serial ports/USB modular converter of serial ports/USB conversion chip PL2303HX and periphery circuit design handheld terminal thereof, can make handheld terminal be connected with host computer by USB interface.
The technical scheme that adopts this embodiment to provide, thread tension force thread tension force monitoring node being recorded by ZigBee wireless communication technology sends to handheld terminal, handheld terminal not only can show thread tension force on the spot, also can thread tension force be uploaded to host computer by USB interface and carry out further statistical study.
The above; it is only preferably embodiment of the present invention; these embodiments are all the different implementations based under general idea of the present invention; and protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (3)
1. the thread tension force wireless monitor system based on ZigBee, is characterized in that, comprising: thread tension force monitoring node (1), handheld terminal (2) and host computer (3);
Thread tension force monitoring node (1) is for recording thread tension force information by Zigbee network from predetermined spring compensator, and described thread tension force information is sent to handheld terminal (2);
Handheld terminal (2) is for described thread tension force information is shown and stored, and by usb communication interface, described thread tension force information is uploaded to host computer (3);
Host computer (3) is for described thread tension force information is shown and statistical study, and obtains the working condition of predetermined spring compensator.
2. system according to claim 1, it is characterized in that, thread tension force monitoring node (1) comprising: tension pick-up and signal amplifier (11), node power module (12), node Zigbee chip (13), node radio-frequency module (14), nodal clock circuit (15) and node reset circuit (16), tension pick-up is connected with the signal input part of node Zigbee chip (13) with the signal output part of signal amplifier (11), the radiofrequency signal input/output terminal of node radio-frequency module (14) is connected with the radiofrequency signal I/O of node Zigbee chip (13), the clock signal output terminal of nodal clock circuit (15) is connected with the clock signal input terminal of node Zigbee chip (13), the reset signal output terminal of node reset circuit (16) is connected with the reset signal input end of node Zigbee chip (13), the power output end of node power module (12) is connected with the power input of amplifier (11) and node Zigbee chip (13) with tension pick-up.
3. system according to claim 1, it is characterized in that, handheld terminal (2) comprises terminal power module (21), terminal Zigbee chip (22), terminal radio frequency module (23), terminal clock circuit (25), terminal reset circuit (26), LCD LCD MODULE (26), serial ports/USB modular converter (27), single-chip microcomputer (28), keyboard (29), storer (210); the radiofrequency signal input/output terminal of terminal radio frequency module (23) is connected with the radiofrequency signal I/O of terminal Zigbee chip (22), the clock signal output terminal of terminal clock circuit (24) is connected with the clock signal input terminal of terminal Zigbee chip (22), the reset signal output terminal of terminal reset circuit (25) is connected with the reset signal input end of terminal Zigbee chip (22), the power output end of terminal power module (21) and terminal Zigbee module (22), LCE LCD MODULE (26) is connected with the power input of single-chip microcomputer (28), the first serial input/output terminal of terminal Zigbee module (22) is connected with the serial ports I/O of single-chip microcomputer (28), the display input/output terminal of single-chip microcomputer (28) is connected with the display input/output terminal of display module (26), the second serial input/output terminal of single-chip microcomputer (28) is connected with the serial ports I/O of serial ports/USB modular converter (27), the signal output part of keyboard (29) is connected with the signal input part of single-chip microcomputer (28), storer (210) storage input/output terminal is connected with the storage input/output terminal of single-chip microcomputer (28).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310684402.3A CN103729992A (en) | 2013-12-16 | 2013-12-16 | Zigbee-based thread tension wireless monitoring system |
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| CN201310684402.3A CN103729992A (en) | 2013-12-16 | 2013-12-16 | Zigbee-based thread tension wireless monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480118A (en) * | 2014-09-17 | 2016-04-13 | 克恩-里伯斯(太仓)有限公司 | Spring compensation device with force indicating function and force indicating system and method thereof |
| CN108958138A (en) * | 2018-09-11 | 2018-12-07 | 中铁高铁电气装备股份有限公司 | A kind of contact net anchorage compensation device early warning system and method |
| CN109751950A (en) * | 2019-03-01 | 2019-05-14 | 上海海事大学 | A kind of portable mobile wireless static strain measuring system |
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| CN201009765Y (en) * | 2007-01-23 | 2008-01-23 | 帖荣俊 | Constant tension spring compensating gear |
| CN201819698U (en) * | 2010-07-26 | 2011-05-04 | 吕强 | System for monitoring icing state of overhead cables |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480118A (en) * | 2014-09-17 | 2016-04-13 | 克恩-里伯斯(太仓)有限公司 | Spring compensation device with force indicating function and force indicating system and method thereof |
| CN108958138A (en) * | 2018-09-11 | 2018-12-07 | 中铁高铁电气装备股份有限公司 | A kind of contact net anchorage compensation device early warning system and method |
| CN109751950A (en) * | 2019-03-01 | 2019-05-14 | 上海海事大学 | A kind of portable mobile wireless static strain measuring system |
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