CN204405762U - Based on the transmission route survey device of radio sensing network - Google Patents
Based on the transmission route survey device of radio sensing network Download PDFInfo
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- CN204405762U CN204405762U CN201520032595.9U CN201520032595U CN204405762U CN 204405762 U CN204405762 U CN 204405762U CN 201520032595 U CN201520032595 U CN 201520032595U CN 204405762 U CN204405762 U CN 204405762U
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Abstract
The utility model discloses a kind of transmission route survey device based on radio sensing network, it comprises: the first temp probe, is arranged on the bus of transmission line of electricity, to detect the temperature of bus; Second temp probe, is arranged on the busbar joint place of transmission line of electricity, to detect the temperature at busbar joint place; Getting can coil, and its secondary is connected with sampling resistor, described in get can electric current on Coil Detector bus; Control module, it is connected respectively with described first temp probe, the second temp probe, with the temperature rise at the temperature signal determination busbar joint place according to the first temp probe and the transmission of the second temp probe, control module is also connected with sampling resistor, and according to the current value on the data acquisition bus of sampling resistor transmission; Electric supply installation, it is connected with described control module, thinks that transmission route survey device is powered; Wireless transport module, it is connected with described control module, closely sends and receive the data of short range transmission with data control module transmitted.
Description
Technical field
The utility model relates to transmission route survey field, is specially a kind of transmission route survey device based on radio sensing network.
Background technology
The connector temperature that transmission of electricity Frequent Accidents causes in factors such as line joint contact resistance, overloads is too high; make joint insulation be deteriorated or burn to collapse; catastrophic failure causes fire, brings serious hidden danger to industrial site, even causes by forced-stopping machine.And the broken string at transmission line of electricity wire jumper place does not generally have earth point, so will have certain difficulty to localization of fault, this will just extend power off time further, cause the major accident that the short time cannot resume production, cause heavy economic losses and social influence.
Transmission line of electricity jumper terminal, the joint particularly connected with parallel groove clamp and downlead place of transformer station use the joint of bolt clamp, and after running after a while, indivedual wire clamp is due to many reasons such as bolt looseness, aluminium surface oxidations, and contact resistance increases.When by larger load current, online folder surface of contact regional area can be overheated rubescent, so that scorification cavitation or surface are burnt till uneven, from and further increase contact resistance, severe patient may blow wire jumper/downlead and cause the accident.As can be seen here, transmission line of electricity jumper terminal is a weak link in transmission line of electricity, carry out Real-Time Monitoring to transmission line of electricity jumper terminal and adopt remedial measures in time to dangerous point being extremely important: one is greatly reduce the time finding transmission line of electricity jumper terminal fault, thus can find and overhaul out of order transmission line of electricity jumper terminal early, avoid therefore and the generation of the accident such as power failure caused; Two is the blindness maintenance greatly reducing transmission line of electricity jumper terminal, thus saves the huge line upkeep work of workload.
Have the temp measuring method that transmission line of electricity jumper terminal is conventional at present: the intelligent wire thermometric of infrared measurement of temperature, conductive contact formula thermometric and optical fiber type.Wherein, the advantage of infrared measurement of temperature is to can be used for remote non-contact measurement, highly sensitive, reaction velocity is fast, precision is high, measurement range is wide; Shortcoming is that it mainly utilizes surface heating effects to carry out on-line monitoring, better to outside heating accident Detection results, for the heating accident caused due to inside, then needs in conjunction with additive method; And the method for this contactless remote infrared thermometric needs line walking workman to utilize Infrared survey instrument to measure jumper terminal temperature one by one to judge whether in peak times of power consumption and need to overhaul jumper terminal, significant wastage is caused to manpower, and the judgement relatively blindness to monitoring objective; In addition, owing to being manual operation, well can not aim at measured point, and instrument compare is sensitive, is subject to device context environmental interference.Conductive contact formula thermometric adopts the communication modes such as the GPRS/GSM of charge, and need each temperature measurement node Real-Time Monitoring and send mass data to master station, this just causes communication and spends high shortcoming; In addition, it is measured mainly for conductor temperature, also can monitor part terminal, but due to the little number of terminal volume many, for terminal temperature monitoring difficulty location, be difficult to this method of practical application.Optical fiber type intelligent wire thermometric telecommunication optical fiber is incorporated to traditional ACSR wire (steel-cored aluminium strand), and make it be connected with the instrument of line terminal, collects conductor temperature data with this.Distributed optical fiber temperature measurement is more suitable for the software development of power cable line running temperature continuous print on-line checkingi and later stage application platform, adopt this technology can not only the in real time surface temperature of detection line and measuring and calculating stable state current-carrying capacity continuously, Timeliness coverage local hot spot position, simultaneously can determination and analysis run in circuit state of insulation; Shortcoming is that implementation cost is higher, can not carry out the transformation of so extensive large cost in a short time to electrical network.
Utility model content
The purpose of this utility model provides a kind of transmission route survey device based on radio sensing network to overcome above-mentioned being not enough to, and this device can carry out on-line real time monitoring to the temperature of transmission line of electricity especially transmission line of electricity jumper terminal.
Based on above-mentioned purpose, the utility model provides a kind of transmission route survey device based on radio sensing network, and it comprises:
First temp probe, it is arranged on the bus of transmission line of electricity, to detect the temperature of bus;
Second temp probe, it is arranged on the busbar joint place of transmission line of electricity, to detect the temperature at busbar joint place;
Getting can coil, and its secondary is connected with sampling resistor, described in get can electric current on Coil Detector bus;
Control module, it is connected respectively with described first temp probe, the second temp probe, with the temperature rise at the temperature signal determination busbar joint place according to the first temp probe and the transmission of the second temp probe, described control module is also connected with sampling resistor, and according to the current value on the data acquisition bus of sampling resistor transmission;
Electric supply installation, it is connected with described control module, thinks that described transmission route survey device is powered;
Wireless transport module, it is connected with described control module, closely sends with data control module transmitted, and receives the data of short range transmission.
Described in the utility model based in the transmission route survey device of radio sensing network, the difference of the temperature of the first temp probe and the second temp probe collection reflects the temperature rise at busbar joint place; In fact get coil to be exactly a current transformer, the induction current size of its secondary can reflect the size of electric current on bus, therefore getting and the secondary of coil can connecing a sampling resistor current signal is converted into voltage signal, calculate the foundation of bus current as control module.
During transmission route survey device busy described in the utility model, the measurement cluster (normally cluster measured by corresponding one an of shaft tower) comprised at a distance of nearer multiple measured node can be arranged at, the corresponding the utility model of each measured node is to measure the electric current on the temperature of the bus at described measured node place, the temperature at busbar joint place and bus, and described measured node comprises multiple from node and at least one Centroid.The described measurement data from node is processed rear/directly mutual with described Centroid near radio immediately by the utility model, after described measurement data processes by described Centroid immediately/and direct and background monitoring remote interaction.The device that Centroid place is arranged can be the utility model device being integrated with remote transmission function, also can be that other has the device of remote transmission function.Described instant process can be extract the data of abnormal conditions, as too high in temperature rise, current anomaly etc.
Transmission route survey device described in the utility model relative to existing infrared temperature measurement apparatus, more true and accurate, and without the need to artificial participation, is not subject to site environment interference; Relative to existing conductive contact formula temperature measuring equipment, because which employs near radio transmission, accurate positioning, and greatly save the communication fee of long-distance communication network; Relative to the intelligent wire temperature measuring equipment of existing optical fiber type, with low cost, feasibility is high at least in a short time.
Further, described in the utility model based in the transmission route survey device of radio sensing network, described control module comprises single-chip microcomputer.
Further, above-mentioned based in the transmission route survey device of radio sensing network, described single-chip microcomputer comprises AD sampling module and master cpu.This AD sampling module is used for being connected respectively with described first temp probe, the second temp probe, and being connected with sampling resistor, and carries out AD conversion for master cpu to the simulating signal received.
Further, be connected with Signal-regulated kinase above-mentioned based in the transmission route survey device of radio sensing network between described sampling resistor and AD sampling module, described Signal-regulated kinase lifts pressure and filtering to the signal that sampling resistor exports.The sampling resistor signal out getting the connection of energy coil secondary is an AC signal, needs to carry out lifting pressure and filtering before entering control module.
Further, above-mentioned based in the transmission route survey device of radio sensing network, described signal conditioning circuit comprises double operational chip and connected low-pass filter.This double operational chip is used for lifting pressure and active power filtering, and low-pass filter is used for anti-aliasing filter.
Further, described in the utility model based in the transmission route survey device of radio sensing network, described electric supply installation comprises:
Supply module, it comprises inductive coil, and described inductive coil is located on transmission line of electricity, to respond to power taking from transmission line of electricity;
Current limliting funnel, it is connected with the output terminal of described supply module; By current distributing when current limliting funnel is excessive for electric current;
Overflow toggle, it is connected with described current limliting funnel; Overflow toggle is for controlling charging current break-make;
Rectification stable pressuring unit, it is connected with described current limliting funnel;
Energy-storage travelling wave tube, it is connected with described rectification stable pressuring unit, and described energy-storage units is also connected with control module;
Charging control unit, it is connected respectively with described overflow toggle, energy-storage units and control module, to control the discharge and recharge of energy-storage units according to the control signal of control module.
Electric supply installation is responsible for providing the utility model to run power supply.Because the utility model operates in high-pressure side, have higher requirement to insulation, common solar electric power supply system should not be arranged on this running environment, again because the utility model wants long-time running out of doors on high voltage transmission line, should not battery be changed, therefore adopt replacing powered battery also not have feasibility.Based on above reason, the mode responding to power taking on bus is adopted to power to the utility model.
Further, above-mentioned based in the transmission route survey device of radio sensing network, described energy-storage travelling wave tube comprises accumulator.
Preferably, described in the utility model based in the transmission route survey device of radio sensing network, described wireless transport module is ZigBee radio-frequency module.Must wireless communication mode be adopted between the utility model of each measured node of a measurement cluster, consider the factors such as cost, reliability and dirigibility, select ZigBee technology to realize short-distance wireless networking.
Further, the transmission route survey device based on radio sensing network described in the utility model also comprises remote transmission module, and it is connected with described control module, sends with remote data control module transmitted.
Further, the transmission route survey device based on radio sensing network described in the utility model also comprises remote transmission module, and it is integrated in control module, sends with remote data control module transmitted.
Transmission route survey device based on radio sensing network described in the utility model, has the following advantages:
1) relative infrared measurement of temperature, more true and accurate, and without the need to artificial participation, be not subject to site environment interference;
2) opposing leads contact temperature-measuring, have employed distributed measurement, instant process and near radio transmission, accurate positioning, and has greatly saved the communication fee of long-distance communication network;
3) the intelligent wire thermometric of opposed optical fibers formula, with low cost, feasibility is high at least in a short time;
4) greatly reduce the time finding transmission line of electricity jumper terminal fault, thus can find and overhaul out of order transmission line of electricity jumper terminal early, avoid therefore and the generation of the accidents such as the power failure that causes;
5) greatly reduce the blindness maintenance of transmission line of electricity jumper terminal, thus save the huge line upkeep work of workload.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of transmission route survey device under a kind of embodiment based on radio sensing network described in the utility model.
Fig. 2 is the structured flowchart of the electric supply installation of the utility model under a kind of embodiment.
Fig. 3 is the interface schematic block diagram of the wireless transport module of the utility model under a kind of embodiment.
Fig. 4 is the interface schematic block diagram of the remote transmission module of the utility model under a kind of embodiment.
Fig. 5 is the system application structure block diagram of the utility model under a kind of embodiment.
Embodiment
The utility model is further illustrated below in conjunction with drawings and Examples.
Fig. 1 shows the structure of transmission route survey device under a kind of embodiment based on radio sensing network described in the utility model; Fig. 2 shows the structure of the electric supply installation of the present embodiment; Fig. 3 shows the interface circuit of the wireless transport module of the present embodiment; Fig. 4 shows the interface circuit of the remote transmission module of the present embodiment.
As shown in Figure 1, the transmission route survey device based on radio sensing network of the present embodiment comprises: the first temp probe, and it is arranged on the bus of transmission line of electricity, to detect the temperature of bus; Second temp probe, it is arranged on the busbar joint place of transmission line of electricity, to detect the temperature at busbar joint place; Get energy coil, its secondary is connected with sampling resistor, gets the electric current on energy Coil Detector bus; Control module, it comprises single-chip microcomputer, this single-chip microcomputer comprises AD sampling module and master cpu, AD sampling module is connected respectively with the first temp probe, the second temp probe, with the temperature rise at the temperature signal determination busbar joint place according to the first temp probe and the transmission of the second temp probe, AD sampling module is also connected with sampling resistor by Signal-regulated kinase, and according to the current value on the data acquisition bus of sampling resistor transmission, Signal-regulated kinase lifts pressure and filtering to the signal that sampling resistor exports; Electric supply installation, it is connected with control module, thinks that transmission route survey device is powered; Wireless transport module, it is connected with control module, closely sends with data control module transmitted; Remote transmission module, it is integrated in control module, sends with remote data control module transmitted.
Particularly, in the present embodiment, signal conditioning circuit comprises double operational chip and connected low-pass filter.This double operational chip is used for lifting pressure and active power filtering, and low-pass filter is used for anti-aliasing filter.When selecting amplifier, an important index is gain bandwidth product, ensure that signal is by the impact of bandwidth when certain enlargement factor.Meanwhile, also according to system requirements, the chip that body noise figure is little should be selected as far as possible, can farthest ensure signal quality like this when selecting amplifier.Under the prerequisite met the demands, consider Cost Problems, select double operational chip LM358 to realize lifting pressure and active filter circuit.Lifting volt circuit actual is exactly an adder operation circuit, and AC signal superposes the stable level of a 1.25V.The stable level of this 1.25V is provided by source of stable pressure chip AD1580BRT.According to Sampling Theorem, before simulating signal enters AD sampling module, needing to carry out an anti-aliasing filter, is exactly low-pass filtering in fact.Second order voltage controlled voltage source low-pass filter is used in the present embodiment.
Particularly, in the present embodiment, electric supply installation as shown in Figure 2, comprising: supply module, and it comprises inductive coil, and described inductive coil is located on transmission line of electricity, to respond to power taking from transmission line of electricity; Current limliting funnel, it is connected with the output terminal of described supply module; Overflow toggle, it is connected with described current limliting funnel; Rectification stable pressuring unit, it is connected with current limliting funnel; Accumulator, it is connected with rectification stable pressuring unit and control module by diode; Charging control unit, it is connected respectively with overflow toggle, accumulator and control module, to control the discharge and recharge of accumulator according to the control signal of control module.Due to (7V ~ 70V) that the voltage after rectifying and voltage-stabilizing is still higher, therefore need selection one to input withstand voltage higher DC/DC Switching Power Supply and carry out step-down, select chip LM5576 in the present embodiment, export 5V voltage, maximum 3A electric current.Also need in the present embodiment to produce 3.3V voltage, use linear voltage stabilization chip TPS7333, the 5V voltage voltage stabilizing produced from LM5576 obtains 3.3V voltage.
Particularly, in the present embodiment, wireless transport module and control module single-chip microcomputer select ZigBeeRF module MRF24J40 and the single-chip microcomputer PIC18LF4620 of MICROCHIP company, as shown in Figure 3, the SPI interface of the several signal pins composition of SCK, SDO, SDI, PHY_CS of control module single-chip microcomputer sends steering order and transceiving data to wireless transport module to its interface interconnected relationship; External interrupt 0 connects the interruption of wireless transport module, utilizes two digital I/O port to connect with PHY_RESETn, PHY_WAKE of wireless transport module, the duty of control chip.Principle diagram design: the 1. reference circuit G-Design provided in the datasheet adopting MICROCHIP company to provide, especially with radio frequency relevant portion, does some variations at numerical portion according to actual conditions; 2. the components and parts (electric capacity, inductance, resistance etc.) involved by radio frequency part all adopt high-frequency element, Loss reducing as much as possible; 3. according to system needs, use the non-equilibrium single ended antenna of band SMA head, and the input of MRF24J40 is the both-end antenna of balanced type, therefore, need an additional balun circuit to change between nonequilibrium single-ended signal and the double-end signal of balance, the present embodiment adopts the balun circuit of the LC composition of MICROCHIP business recommendations.
Particularly, in the present embodiment, remote transmission module selects the G24 chip of motorola inc, and itself and control module single-chip microcomputer and SIM card interface interconnected relationship are as shown in Figure 4.Can realize GPRS network transmission data after the external SIM card of remote transmission module work and send SMS message function to cellphone subscriber, control module single-chip microcomputer sends AT order and data by UART mouth to remote transmission module.GPRS_ON/OFF is the power switch control signal of remote transmission module, and the low level of its lasting 0.5-1.5s can open remote transmission module, and what utilize this pin to complete remote transmission module in the present embodiment restarts function.GPRS_nRI is audio call indicator signal, when remote transmission module receives audio call, this pin there will be the low level square wave of 4s high level 1s, control module single-chip microcomputer can call data command according to this signal as background server, starts data acquisition session.GPRS_PwrEN controls remote transmission module and enters or exit park mode, and remote transmission module at the idling mode current drain is 18mA, and current drain is in the hibernation mode only about 3mA.The present embodiment only needs to open remote transmission module when transmission data, other times remote transmission module is all in holding state, and the network connection in sleep procedure of remote transmission module does not disconnect, still monitor network, the number sended over by server between rest period can not be lost in.Therefore the present embodiment medium-long range transport module is in full speed running state when only sending data, enters park mode at once, at utmost reduce the power consumption of this module when data are sent.
Fig. 5 shows the system application structure of the utility model under a kind of embodiment.
As shown in Figure 5, during the transmission route survey application of installation based on radio sensing network of the present embodiment, be installed in each measured node that electric power line pole tower measures the 1 ~ 3N of 1 ~ loop, loop N of cluster respectively, the corresponding the present embodiment of each measured node is to measure the electric current on the temperature of the bus at described measured node place, the temperature at busbar joint place and bus.Node centered by measured node 3, all the other measured node are referred to as from node.The present embodiment device being positioned at measured node 3 is equivalent to network coordinator, and be responsible for opening network, organize from nodes coordinating work, it comprises remote transmission module, receives background task order, respectively from functions such as nodal information collection and remote transmission to complete.Can according to local real space position dynamic organization from actual sets gateway system between the present embodiment device of node, serve as routing node or only as terminal node, in the present embodiment, measured node 1 ~ 2 and 3N-2 ~ 3N are terminal node, and all the other are routing node.The present embodiment utilizes ZigBee technology, by node mode Tissue distribution formula cordless communication network, thus real-time perception, measurement, gathers the information of each distribute objects, and makes instant process to its data.
When the present embodiment works, mutual from the present embodiment measurement device data of node the present embodiment device near radio that is rear by instant process and Centroid, measurement data is processed rear and background monitoring remote interaction by the present embodiment device of Centroid immediately.Instant process is extracted the data of abnormal conditions, comprises that temperature rise is too high, current anomaly etc.Background monitoring remote interaction to as if interconnective data receiving terminal, master station and database; The means of background monitoring remote interaction are GSM/GPRS communication networks.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1., based on a transmission route survey device for radio sensing network, it is characterized in that, comprising:
First temp probe, it is arranged on the bus of transmission line of electricity, to detect the temperature of bus;
Second temp probe, it is arranged on the busbar joint place of transmission line of electricity, to detect the temperature at busbar joint place;
Getting can coil, and its secondary is connected with sampling resistor, described in get can electric current on Coil Detector bus;
Control module, it is connected respectively with described first temp probe, the second temp probe, with the temperature rise at the temperature signal determination busbar joint place according to the first temp probe and the transmission of the second temp probe, described control module is also connected with sampling resistor, and according to the current value on the data acquisition bus of sampling resistor transmission;
Electric supply installation, it is connected with described control module, thinks that described transmission route survey device is powered;
Wireless transport module, it is connected with described control module, closely sends with data control module transmitted, and receives the data of short range transmission.
2., as claimed in claim 1 based on the transmission route survey device of radio sensing network, it is characterized in that, described control module comprises single-chip microcomputer.
3., as claimed in claim 2 based on the transmission route survey device of radio sensing network, it is characterized in that, described single-chip microcomputer comprises AD sampling module and master cpu.
4. as claimed in claim 3 based on the transmission route survey device of radio sensing network, it is characterized in that, be connected with Signal-regulated kinase between described sampling resistor and AD sampling module, described Signal-regulated kinase lifts pressure and filtering to the signal that sampling resistor exports.
5., as claimed in claim 4 based on the transmission route survey device of radio sensing network, it is characterized in that, described signal conditioning circuit comprises double operational chip and connected low-pass filter.
6., as claimed in claim 1 based on the transmission route survey device of radio sensing network, it is characterized in that, described electric supply installation comprises:
Supply module, it comprises inductive coil, and described inductive coil is located on transmission line of electricity, to respond to power taking from transmission line of electricity;
Current limliting funnel, it is connected with the output terminal of described supply module;
Overflow toggle, it is connected with described current limliting funnel;
Rectification stable pressuring unit, it is connected with described current limliting funnel;
Energy-storage travelling wave tube, it is connected with described rectification stable pressuring unit, and described energy-storage units is also connected with control module;
Charging control unit, it is connected respectively with described overflow toggle, energy-storage units and control module, to control the discharge and recharge of energy-storage units according to the control signal of control module.
7., as claimed in claim 6 based on the transmission route survey device of radio sensing network, it is characterized in that, described energy-storage travelling wave tube comprises accumulator.
8., as claimed in claim 1 based on the transmission route survey device of radio sensing network, it is characterized in that, described wireless transport module is ZigBee radio-frequency module.
9., as claimed in claim 1 based on the transmission route survey device of radio sensing network, it is characterized in that, also comprise remote transmission module, it is connected with described control module, sends with remote data control module transmitted.
10., as claimed in claim 1 based on the transmission route survey device of radio sensing network, it is characterized in that, also comprise remote transmission module, it is integrated in control module, sends with remote data control module transmitted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520032595.9U CN204405762U (en) | 2015-01-16 | 2015-01-16 | Based on the transmission route survey device of radio sensing network |
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| CN201520032595.9U CN204405762U (en) | 2015-01-16 | 2015-01-16 | Based on the transmission route survey device of radio sensing network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831808A (en) * | 2017-08-05 | 2018-03-23 | 常州亚盾测控技术有限公司 | Bus temperature rise online monitoring system |
| CN111157137A (en) * | 2020-01-13 | 2020-05-15 | 中旭京坤（北京）科技有限公司 | Self-induction electricity-taking type wireless temperature measurement sensor based on ZigBee |
| CN111829675A (en) * | 2020-08-06 | 2020-10-27 | 广东电网有限责任公司佛山供电局 | Temperature measuring device of power distribution network monitoring system |
-
2015
- 2015-01-16 CN CN201520032595.9U patent/CN204405762U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831808A (en) * | 2017-08-05 | 2018-03-23 | 常州亚盾测控技术有限公司 | Bus temperature rise online monitoring system |
| CN111157137A (en) * | 2020-01-13 | 2020-05-15 | 中旭京坤（北京）科技有限公司 | Self-induction electricity-taking type wireless temperature measurement sensor based on ZigBee |
| CN111829675A (en) * | 2020-08-06 | 2020-10-27 | 广东电网有限责任公司佛山供电局 | Temperature measuring device of power distribution network monitoring system |
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Granted publication date: 20150617 Termination date: 20170116 |