CN101508308B - Intelligent compensation capacitance for track circuit - Google Patents
Intelligent compensation capacitance for track circuit Download PDFInfo
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- CN101508308B CN101508308B CN2009100198223A CN200910019822A CN101508308B CN 101508308 B CN101508308 B CN 101508308B CN 2009100198223 A CN2009100198223 A CN 2009100198223A CN 200910019822 A CN200910019822 A CN 200910019822A CN 101508308 B CN101508308 B CN 101508308B
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Abstract
The invention relates to an intelligent compensation capacitor used for a track circuit, which comprises a track capacitor, wherein a capacitance measuring circuit and a power supply circuit are connected with both sides of the track capacitor respectively, and the capacitance measuring circuit is connected with a wireless communication unit; the capacitance measuring circuit comprises a current sampling circuit which is connected in series with a leading-out wire on one side of the track capacitor and a voltage sampling circuit which is connected in parallel with both ends of the track capacitor, the voltage sampling circuit and the current sampling circuit are connected with a programmable system-on-chip respectively, and the programmable system-on-chip is connected with the wireless communication unit; the power supply circuit comprises a current inductor which is arranged on the other side of the track capacitor and used for acquiring partial signal energy flowing through the track capacitor on the leading-out wire; and the current inductor is connected with a power supply controlling circuit, and the power supply controlling circuit is connected with a buffer energy storing unit. An inspector can obtain parameters of the corresponding track capacitor without touching the track capacitor, and the intelligent compensation capacitor has the advantages of time conservation and labor conservation and greatly improves the working efficiency.
Description
Technical field:
The present invention relates to a kind of building-out capacitor, especially a kind of track circuit intelligent compensation capacitance.
Background technology:
Building-out capacitor is the important component part of ZPW-2000 type track circuit.Building-out capacitor is arranged between the track, is installed on sleeper or the railway ballast.Usually install one every about 100 meters, arrangement pitch reduces by half near the electrical insulation section.Obviously, be huge with building-out capacitor quantity.The rated capacitance of electric capacity is: 22uf to 90uF; Rated voltage: 160Va.c.; Insulation resistance: 〉=500M Ω.
In the use, bad change can take place in the building-out capacitor performance, even the faults such as (comprising artificial damage) of opening a way, and former method of operating is to need personnel to carry equipment to reach the standard grade, building-out capacitor is pulled down a pair of its measure one by one, could judge and replace fault electric capacity.Chinese patent 200610102210.7 " insulation-free track circuit compensation capacitor on-line active measuring device ", Chinese patent 200420074887.0 " railway track circuit compensation capacitance on-line detector " and Chinese patent 200620078371.2 " online " from detecting the track circuit compensation capacitance device, though proposed some solutions, need not again building-out capacitor be pulled down one by one and detect, but still there are some defectives in these schemes, as: first, needing the testing staff to be carried at line detector reaches the standard grade, and detection probe is connected to building-out capacitor (being track), use inconvenient, also dangerous; The second, inject signal excitation to the track building-out capacitor, measure the scheme of response then, cause online detection instrument huge, and exist and jeopardize the inherently safe risk of track circuit; The 3rd, the scheme of the current sampling by current inductor (current clamp) acquisition stream overcompensation electric capacity can be introduced big phase shift, causes the calculating at capacity loss angle to lose benchmark, influences result of a measurement.The testing labour intensity of reaching the standard grade is big, wastes time and energy, and efficient is extremely low, and because transportation is busy, there is sizable personal safety risk in maintainer's injection circuit homework.
Summary of the invention:
The invention provides a kind of track circuit intelligent compensation capacitance, it need not the testing staff and goes up to track, can detect the parameter of respective rail electric capacity near track, time saving and energy saving, improved testing efficient greatly, and can not influence normal railway transportation, and guaranteed testing staff's personal safety, solved problems of the prior art.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be: it comprises track electric capacity, the pig-tail wire at track electric capacity two ends is electrically connected with track circuit, be connected with capacitance measurement circuit and power circuit respectively in track electric capacity both sides, capacitance measurement circuit is connected with wireless communication unit; Described capacitance measurement circuit comprises the current sampling circuit that is connected on the track electric capacity one side pig-tail wire and is connected in parallel on the voltage sample circuit at track electric capacity two ends, voltage sample circuit links to each other with programmable system on chip respectively with current sampling circuit, and programmable system on chip links to each other with wireless communication unit; Described power circuit comprises and is located at the current inductor that track electric capacity opposite side is used to obtain the part signal energy that flows through track electric capacity on the pig-tail wire, and current inductor links to each other with power control circuit, and power control circuit links to each other with the buffering Storage Unit.
The described voltage sample circuit that is connected in parallel on track electric capacity two ends is linked to each other with a differential amplifier through a current limiting switch respectively by track electric capacity two ends, and differential amplifier links to each other with programmable system on chip.
The described current sampling circuit that is connected on the track electric capacity one side pig-tail wire comprises the current sampler that is connected on the pig-tail wire, and current sampler links to each other with programmable system on chip through a differential amplifier.
Described wireless communication unit is wireless microcellulor communication circuit.
Described differential amplifier is the high resistance type differential amplifier.
Described current sampler is the current divider type current sample collector.
The present invention will be used to detect the capacitance measurement circuit of track electric capacity parameter, the wireless communication unit of transporting rail electric capacity parameter and be packaged together for the power circuit of capacitance measurement circuit and wireless communication unit power supply, when track electric capacity inserts track circuit, the characteristic parameter of online detection track electric capacity, and when the testing staff needs this track electric capacity parameter, in time be sent to by radio communication circuit on testing staff's the remote control check implement, have following characteristics: at first, the testing staff need not contact track electric capacity, be that the testing staff only needs in orbit by the remote control check implement, the online characteristic parameter of the track electric capacity that the reception wireless communication unit sends, contact track capacitance detecting need not to get on the right track, testing staff's personal safety and the safety that railway transportation is produced have been ensured, and time saving and energy saving, improved testing efficient greatly; The second, do not inject extra external energy to track electric capacity, utilize track circuit self signal to finish test, guaranteed the normal stable operation of original track circuit; The 3rd, comprehensive characteristic parameter of monitoring track electric capacity quantitatively; The 4th, described current inductor adopts the transformer way to take power, and current sampling circuit adopts current diverter, the mode of shunt circuit in parallel on a current lead, no matter open circuit or short circuit take place in current inductor or current sampling circuit, can not exert an influence to the original track circuit; Voltage sample circuit adopts chip high resistance connection mode, once it breaks down, chip presents the impedance of 1KM Ω, has guaranteed that the normal operation of original track circuit is unaffected.
Description of drawings:
Fig. 1 is a circuit catenation principle block diagram of the present invention.
Fig. 2 is a capacitance measurement circuit catenation principle block diagram.
Fig. 3 is the wireless communication unit schematic circuit diagram.
Fig. 4 is power circuit principle figure.
Among the figure, 1, track electric capacity; 2, programmable system on chip; 3, current sampling circuit; 4, voltage sample circuit; 5, current inductor; 6, power control circuit; 7, buffering Storage Unit; 8, wireless communication unit.
The specific embodiment:
For clearly demonstrating the technical characterstic of this programme, below by the specific embodiment, and in conjunction with its accompanying drawing, the present invention will be described in detail.
As shown in Figure 1, be circuit catenation principle block diagram of the present invention.Intelligent compensation capacitance of the present invention will be used to detect track electric capacity 1 parameter capacitance measurement circuit, transporting rail electric capacity 1 parameter wireless communication unit 8 and be packaged together for the power circuit of capacitance measurement circuit and wireless communication unit 8 power supplies, it comprises track electric capacity 1, the pig-tail wire at track electric capacity 1 two ends is electrically connected with track circuit, be connected with capacitance measurement circuit and power circuit respectively in track electric capacity 1 both sides, capacitance measurement circuit is connected with wireless communication unit 8; Described capacitance measurement circuit comprises current sampling circuit 3 that is connected on the track electric capacity 1 one side pig-tail wires and the voltage sample circuit 4 that is connected in parallel on track electric capacity 1 two ends, voltage sample circuit 4 links to each other with programmable system on chip 2 respectively with current sampling circuit 3, and programmable system on chip 2 links to each other with wireless communication unit 8; Described power circuit comprises and is located at the current inductor 5 that track electric capacity 1 opposite side is used to obtain the part signal energy that flows through track electric capacity 1 on the pig-tail wire, and current inductor 5 links to each other with power control circuit 6, and power control circuit 6 links to each other with buffering Storage Unit 7.Described wireless communication unit 8 is wireless microcellulor communication circuit.
As shown in Figure 2, be capacitance measurement circuit catenation principle block diagram.Capacitance measurement circuit comprises current sampling circuit 3 that is connected on the track electric capacity 1 one side pig-tail wires and the voltage sample circuit 4 that is connected in parallel on track electric capacity 1 two ends; the described voltage sample circuit 4 that is connected in parallel on track electric capacity 1 two ends by track electric capacity 1 two ends respectively after a current limiting switch F1, current limiting switch F2 protection; handle through a differential amplifier A1 again, finish voltage parameter collection track electric capacity 1 two ends by programmable system on chip 2.The described current sampling circuit 3 that is connected on the track electric capacity 1 one side pig-tail wires comprises the current sampler U3 that is connected on the pig-tail wire, the mouth of current sampler U3 is connected to differential amplifier A2, is finished flowing through the current parameters collection of track electric capacity 1 by programmable system on chip 2 again.Programmable system on chip 2 is sent to the data of gathering on testing staff's the remote control check implement by wireless communication unit 8 through after the computing.Described differential amplifier A1 and differential amplifier A2 are the high resistance type differential amplifier.Described current sampler U3 is the current divider type current sample collector.
As shown in Figure 3, be the wireless communication unit one concrete schematic circuit diagram of implementing.The present invention adopts 2.4ghz microcellulor wireless communication technology, 20 meters of communication distances, data rate 100kbps.U4 is a monolithic integrated communicaton circuit, is integrated with functions such as Base-Band Processing, modulation, radio-frequency front-end.Outer meeting resistance, electric capacity, inductance network are formed in plate dual-mode antenna T1.When the testing staff carries the work of remote control check implement, send call instruction near intelligent compensation capacitance of the present invention and to it, wireless communication unit 8 receives call information and activates communication circuit U4, and by this circuit triggers programmable system on chip 2.Programmable system on chip 2 is finished the corresponding data collection from voltage sample circuit 4 and current sampling circuit 3 respectively, and data are handled obtains the capacitance characteristic parameter, then with result of calculation by on the remote control check implement that is wirelessly transmitted to the testing staff.Programmable system on chip 2 enters the standby low power consumpting state after finishing an on-line measurement process control.
As shown in Figure 4, be the power circuit one concrete schematic circuit diagram of implementing.The inductor TS1 of current transformer form obtains working power by electromagnetic induction with isolation method, and obtained average power supply energy is lower than 1 milliampere, compares with the track circuit working current, can ignore.Inductive energy is delivered to voltage stabilizer U1 through rectifying circuit, filtering, and the stabilized power source of acquisition stores among the energy storage capacitor C7, forms working power, uses in order to capacitance measurement circuit and wireless communication unit.
The present invention does not describe part in detail, is those skilled in the art of the present technique's known technology.
Claims (6)
1. track circuit intelligent compensation capacitance, comprise track electric capacity, the pig-tail wire at track electric capacity two ends is electrically connected with track circuit, it is characterized in that: be connected with capacitance measurement circuit and power circuit respectively in track electric capacity both sides, capacitance measurement circuit is connected with wireless communication unit; Described capacitance measurement circuit comprises the current sampling circuit that is connected on the track electric capacity one side pig-tail wire and is connected in parallel on the voltage sample circuit at track electric capacity two ends, voltage sample circuit links to each other with programmable system on chip respectively with current sampling circuit, and programmable system on chip links to each other with wireless communication unit; Described power circuit comprises and is located at the current inductor that track electric capacity opposite side is used to obtain the part signal energy that flows through track electric capacity on the pig-tail wire, and current inductor links to each other with power control circuit, and power control circuit links to each other with the buffering Storage Unit.
2. a kind of track circuit intelligent compensation capacitance according to claim 1, it is characterized in that: the described voltage sample circuit that is connected in parallel on track electric capacity two ends is linked to each other with a differential amplifier through a current limiting switch respectively by track electric capacity two ends, and differential amplifier links to each other with programmable system on chip.
3. a kind of track circuit intelligent compensation capacitance according to claim 1, it is characterized in that: the described current sampling circuit that is connected on the track electric capacity one side pig-tail wire comprises the current sampler that is connected on the pig-tail wire, and current sampler links to each other with programmable system on chip through a differential amplifier.
4. a kind of track circuit intelligent compensation capacitance according to claim 1 is characterized in that: described wireless communication unit is wireless microcellulor communication circuit.
5. according to claim 2 or 3 described a kind of track circuit intelligent compensation capacitances, it is characterized in that: described differential amplifier is the high resistance type differential amplifier.
6. a kind of track circuit intelligent compensation capacitance according to claim 3 is characterized in that: described current sampler is the current divider type current sample collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100198223A CN101508308B (en) | 2009-03-13 | 2009-03-13 | Intelligent compensation capacitance for track circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100198223A CN101508308B (en) | 2009-03-13 | 2009-03-13 | Intelligent compensation capacitance for track circuit |
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| Publication Number | Publication Date |
|---|---|
| CN101508308A CN101508308A (en) | 2009-08-19 |
| CN101508308B true CN101508308B (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100198223A Expired - Fee Related CN101508308B (en) | 2009-03-13 | 2009-03-13 | Intelligent compensation capacitance for track circuit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061361B (en) * | 2018-07-18 | 2019-12-03 | 西南交通大学 | ZPW-2000 compensating electric capacity open-circuit fault method for early warning |
| CN109799773A (en) * | 2019-03-05 | 2019-05-24 | 柳州和利时科技有限责任公司 | A kind of railway outdoor signal equipment monitoring system based on NBIoT Internet of Things |
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- 2009-03-13 CN CN2009100198223A patent/CN101508308B/en not_active Expired - Fee Related
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| CN101508308A (en) | 2009-08-19 |
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Granted publication date: 20110112 Termination date: 20140313 |