CN109159798A - A method of with track-circuit signalling cable transmission axle-counting signal - Google Patents
A method of with track-circuit signalling cable transmission axle-counting signal Download PDFInfo
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- CN109159798A CN109159798A CN201810969094.1A CN201810969094A CN109159798A CN 109159798 A CN109159798 A CN 109159798A CN 201810969094 A CN201810969094 A CN 201810969094A CN 109159798 A CN109159798 A CN 109159798A
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- 230000011664 signaling Effects 0.000 title claims abstract description 126
- 230000005540 biological transmission Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000003321 amplification Effects 0.000 claims description 22
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 22
- 238000002955 isolation Methods 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 8
- 210000001367 artery Anatomy 0.000 claims description 2
- 210000003462 vein Anatomy 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 19
- 239000000243 solution Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/163—Detection devices
- B61L1/165—Electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/167—Circuit details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/168—Specific transmission details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/18—Railway track circuits
- B61L1/181—Details
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
A method of with track-circuit signalling cable transmission axle-counting signal, by the DC pulse voltage signal modulation of wheel detector generation at the meter shaft CF signal of suitable track-circuit signalling cable transmission, load is on track-circuit signalling cable, by track-circuit signalling cable transmission, then meter shaft CF signal is isolated from track-circuit signalling cable and is reduced to meter shaft direct current voltage pulse signal, axle-counting signal on track-circuit signalling cable by transmitting, axle counting system is not necessarily to be laid with the signal cable of external equipment in junction chamber, reduce the laying of axle-counting signal cable, save meter shaft cable cost, without meter shaft cable construction and later maintenance, with significant economic value and use value.In addition, power supply used in meter shaft outdoor equipment, also has track-circuit signalling cable to send transmission, axle counting system cost is further decreased and without cable laying and later maintenance.
Description
Technical field
The invention belongs to railway signal system technical fields, in particular to a kind of to use track-circuit signalling cable transmission meter shaft
The method of signal.
Background technique
Rail is divided into several sections, free time or occupancy situation of the train scheduling according to each section, is arranged into for train
Road, signal system control the traveling of train.Usual railway signal system track circuit and axle counting system check the position of train
Situation judges that section is idle or occupies, provides driving condition to interlock system.Track circuit is the pass in railway signal system
Button apparatus is widely used in field of track traffic.Track circuit includes transmitter and the reception, processing for generating track-circuit signalling
Track-circuit signalling and the receiver of output section free time or occupancy, and be arranged between transmitter and receiver and be used to pass
The track-circuit signalling cable (also referred to as SPT digital signal cable) of defeated track-circuit signalling.Track circuit uses dedicated rail
Road circuit signal cable is routed to interior from outdoor, and signal connects external equipment in track circuit room.
The axle counting system of the prior art includes being mounted on the wheel detector that wheel is detected on rail, and be arranged indoors
Meter shaft host, and the meter shaft cable of connection wheel detector and meter shaft host, the axle-counting signal that wheel detector generates pass through
For meter shaft cable transmission to indoor meter shaft host, signal that meter shaft host process receives simultaneously exports the information that rail is idle or occupies,
Driving condition is provided to interlock system.The axle counting system of the prior art needs to be laid with dedicated meter shaft cable transmission axle-counting signal,
Can not be using the track-circuit signalling cable transmission signal in track circuit, at high cost, construction is complicated, and later maintenance is difficult.
Summary of the invention
There are problems for the prior art by the present invention, provide a kind of side with track-circuit signalling cable transmission axle-counting signal
Method.
A kind of technical solution of present invention solution technical problem are as follows: side with track-circuit signalling cable transmission axle-counting signal
Method, including the wheel detector and the processing of setting indoors that check wheel and generate direct current voltage pulse signal are arranged on rail
The meter shaft host of wheel sensor signal；Wheel detector is generated into direct current voltage pulse signal modulation into suitable track electricity first
The meter shaft CF signal of road signal cable transmission；Then meter shaft CF signal is loaded on track-circuit signalling cable；Use rail
Road circuit signal cable transmits meter shaft CF signal；Meter shaft CF signal is separated from track-circuit signalling cable again；
Meter shaft CF signal is reduced to direct current voltage pulse signal；It finally gives direct current voltage pulse signal to meter shaft host process, counts
Axis host process direct current voltage pulse signal and output section occupy or the information of free time.The meter shaft carrier frequency distinguishes rail
Road circuit signal frequency, prevents track-circuit signalling from interfering with each other with meter shaft CF signal.
The further technical solution of the present invention are as follows: set gradually on signal path of the wheel detector with meter shaft host
There are amplification modulation unit, outdoor isolator, track-circuit signalling cable, indoor isolator, demodulating unit；The amplification modulation is single
Member, the direct current voltage pulse signal for generating wheel detector, which amplifies and is modulated into, is suitble to the track-circuit signalling cable
Transmit meter shaft CF signal；The outdoor isolator, for meter shaft CF signal to be loaded into the track-circuit signalling cable
On；The track-circuit signalling cable transmission meter shaft CF signal；The interior isolator, is used for the meter shaft CF signal
From the track-circuit signalling electrical cables separate；The demodulating unit is carried for receiving the meter shaft that the indoor isolator is isolated
Frequency signal is simultaneously reduced to direct current voltage pulse signal.
The further technical solution of the present invention are as follows: DC power supplier is set in meter shaft indoor equipment；By DC power supply plus
It is downloaded on track-circuit signalling cable；With track-circuit signalling cable transmission DC power supply；DC power supply is believed from track circuit
It separates on number cable and is used to meter shaft outdoor equipment.That is DC power supply needed for meter shaft outdoor equipment, also by track electricity
Road signal cable is transferred to outdoor, is supplied to outdoor equipment use.
The further technical solution of the present invention are as follows: also set gradually on the signal path of the meter shaft host and wheel detector
There are DC power supplier, power supply combiner circuit, power supply split circuit；Isolator or solution indoors is arranged in the DC power supplier
It adjusts in unit, for providing DC power supply；The power supply combiner circuit is arranged in isolator indoors or demodulating unit, and being used for will
DC power supply is loaded on track-circuit signalling cable；The power supply split circuit setting is single in outdoor isolator or amplification modulation
Member, for separating DC power supply from track-circuit signalling cable.
The further technical solution of the present invention are as follows: in the track-circuit signalling cable and track circuit indoor equipment and track
Blocking unit is arranged in series between circuit outdoor equipment respectively, is respectively serve to separate DC power supply injection circuit indoor equipment
With track circuit outdoor equipment.
The further technical solution of the present invention are as follows: frequency and meter shaft CF signal frequency phase are set in the indoor isolator
Corresponding meter shaft frequency shift circuit, for loading meter shaft CF signal to track-circuit signalling cable；In the outer isolator
Frequency meter shaft frequency shift circuit corresponding with meter shaft CF signal frequency is set, is used for meter shaft CF signal from track circuit
Separation.Meter shaft frequency shift circuit is used for through meter shaft CF signal, and track-circuit signalling is prevented to pass through.
The further technical solution of the present invention are as follows: meter shaft high-frequency isolation circuit is set in the indoor isolator, for every
From meter shaft CF signal injection circuit indoor equipment.Meter shaft high-frequency isolation circuit is used to pass through track-circuit signalling and prevents
Meter shaft CF signal is by reaching track circuit equipment indoor equipment.
The further technical solution of the present invention are as follows: in the outdoor isolator be arranged meter shaft high-frequency isolation circuit, for every
From meter shaft CF signal injection circuit outdoor equipment.Meter shaft high-frequency isolation circuit is used to pass through track-circuit signalling and prevents
Meter shaft CF signal is by reaching track circuit equipment outdoor equipment.
The further technical solution of the present invention are as follows: the meter shaft carrier frequency is preferably 20KHz to 100KHz.The frequency zones
Not in track-circuit signalling frequency, will not be interfered with each other with track-circuit signalling.
The positive effect of the present invention is: the DC pulse voltage signal modulation that wheel detector is generated is at suitable track
The meter shaft CF signal of circuit signal cable transmission is loaded on track-circuit signalling cable, is passed by track-circuit signalling cable
It is defeated, meter shaft CF signal is then isolated from track-circuit signalling cable and is reduced to meter shaft direct current voltage pulse signal, is counted
By transmitting on track-circuit signalling cable, axle counting system is not necessarily to be laid with the signal cable of external equipment in junction chamber axis signal, reduces
Meter shaft cable cost is saved in the laying of axle-counting signal cable, is not necessarily to meter shaft cable construction and later maintenance, has significant warp
Help value and use value.In addition, power supply used in meter shaft outdoor equipment, also has track-circuit signalling cable to send transmission, into one
Step reduces axle counting system cost and is not necessarily to cable laying and later maintenance.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Detailed description of the invention
Fig. 1 is present system functional block diagram.
Fig. 2 is outdoor isolator structural block diagram of the present invention.
Fig. 3 is the indoor spacer structures block diagram of the present invention.
Fig. 4 is one embodiment of the invention schematic diagram.
Specific embodiment
As shown in Figure 1, method of the present invention with track-circuit signalling cable transmission axle-counting signal:
Setting checks wheel and generates the wheel detector and the vehicle of setting processing indoors of direct current voltage pulse signal on rail
The meter shaft host of wheel sensor signal, and it is set in turn in the amplification between wheel detector and meter shaft host on signal path
Modulation unit, outdoor isolator, track-circuit signalling cable, indoor isolator and demodulating unit.Wheel detector is mounted on steel
Train wheel is detected on rail, simultaneously output section is idle or occupies letter for processing wheel sensor signal indoors for the setting of meter shaft host
Number, amplification modulation unit is arranged beside rail, the amplification of direct current voltage pulse signal and tune for generating wheel detector
The meter shaft CF signal of suitable track-circuit signalling cable transmission is made, outdoor isolator setting is connected on track electricity in outdoor
On the signal cable of road and amplification modulation unit is connected, for modulated meter shaft CF signal to be loaded into track-circuit signalling electricity
On cable；Isolator and indoor isolator, are used for transmission meter shaft CF signal outside track-circuit signalling cable connection room；Indoor isolation
Device is arranged indoors, is arranged in series on track-circuit signalling cable and connecting demodulating unit, for by meter shaft CF signal from
Track-circuit signalling electrical cables separate；Demodulating unit is arranged indoors, the meter shaft CF signal for isolating indoor isolator
It is reduced to direct current voltage pulse signal and is transferred to meter shaft host, the direct current voltage pulse of meter shaft host process demodulating unit reduction
Signal and the signal of output section free time or occupancy.The direct current voltage pulse signal modulation that the present invention generates wheel detector at
It is suitable for the CF signal of track-circuit signalling cable transmission, using track-circuit signalling cable transmission to interior, indoors will
Meter shaft CF signal is separated and is reduced to direct current voltage pulse signal, and meter shaft host process is then given.The present invention does not need
Special laying axle-counting signal cable, saving cable material cost, the maintenance of construction cost and later period to axle-counting signal cable,
Have extraordinary prospect of the application and value.
The present invention includes outdoor equipment and indoor equipment.Outdoor equipment include wheel detector, amplification modulation unit and
Outdoor isolator；Indoor equipment includes indoor isolator, demodulating unit, meter shaft host；Meter shaft indoor equipment and outdoor equipment are logical
Cross track-circuit signalling cable connection.Wheel detector for detecting train wheel is installed on rail, in wheel detector
There are two sensing units for setting, and when the wheel of train passes through wheel detector, two sensing units are successively respectively induced generation
Direct current voltage pulse signal.Setting amplification modulation unit connects wheel detector by rail, generates to wheel detector straight
Galvanic electricity pressure pulse signal is handled and is modulated, direct current voltage pulse signal modulation at suitable track-circuit signalling cable transmission
Meter shaft CF signal (fsk signal), and the carrier frequency of modulated axle-counting signal carrier frequency and 1700 ~ 2600Hz of track circuit
It is distinguished in frequency range, prevents the interference between different frequency range.Axle-counting signal carrier frequency generally preferably 20KHZ ~ 100KHZ it
Between, other frequency separations for not influencing track-circuit signalling can also be with.Indoor isolator is by meter shaft CF signal from track circuit
It is separated on signal cable, is transferred to demodulating unit, meter shaft CF signal is reduced to DC power supply pulse by demodulating unit to be believed
Number, it is then transferred to meter shaft host process, meter shaft host output track occupies or the information of free time, provides driving item to interlocking
Part.
As shown in Figures 2 and 3, the invention also includes set gradually on meter shaft host and wheel sensor signal access
DC power supplier, power supply combiner circuit and power supply split circuit.The DC power supplier is arranged in demodulating unit or interior
In isolator, it is connected to power supply combiner circuit, for providing DC power supply for wheel detector and amplification modulation unit；Power supply closes
It is arranged in isolator or demodulating unit at circuit, one end and track-circuit signalling cable connection, the other end and DC power supply mould
Block connection, the power supply for providing DC power supplier are loaded into track-circuit signalling cable；Track-circuit signalling cable
Power supply combiner circuit and power supply split circuit are connected, DC power supply is used for transmission；Power supply split circuit is arranged in outdoor isolator
In, one end connects track-circuit signalling cable, other end connection amplification modulation unit, with by DC power supply from track-circuit signalling
It is separated on cable, is supplied to amplification modulation unit and wheel detector uses.About DC power supplier, can also be
Other independent DC power supplies, as long as can be by power supply combiner circuit and track-circuit signalling cable transmission to being set outside meter shaft room
Standby use.DC power supply is arranged in meter shaft indoor equipment in the present invention, by track-circuit signalling cable transmission to outdoor, mentions
Meter shaft outdoor equipment is supplied to use.Power supply used in meter shaft outdoor equipment is also by track-circuit signalling cable transmission, without paving
If feed cable, reduce the material cost and construction cost and the maintenance cost in later period of feed cable.
As shown in figure 4, the power supply combiner circuit is made of third inductance L3 and the second capacitor C2, third inductance L3 with
Common end is formed after one end of second capacitor C2 is in parallel and accesses track-circuit signalling cable, and the other end of third inductance L3 is as straight
The DC power supplier of the path terminal connection demodulating unit in galvanic electricity source, the other end of the second capacitor C2 is as meter shaft CF signal
The demodulator circuit of path terminal connection demodulating unit；Second capacitor C2=10uF, third inductance L3=20mH.Third inductance L3 is for leading to
It crosses DC power supply and meter shaft CF signal is prevented to pass through, the second capacitor C2 is used to pass through meter shaft CF signal and prevents DC power supply
Pass through.
As shown in figure 4, the power supply split circuit is made of third inductance L3 and the second capacitor C2, third inductance L3 with
Common end is formed after one end of second capacitor C2 is in parallel and accesses track-circuit signalling cable, and the other end of third inductance L3 is as straight
The path terminal connection amplification modulation unit in galvanic electricity source, the other end of the second capacitor C2 are connected as the path terminal of meter shaft CF signal
To amplification modulation unit；Second capacitor C2=10uF, third inductance L3=20mH.Third inductance L3 is used to pass through DC power supply and hinders
Only meter shaft CF signal passes through, and the second capacitor C2 is used to pass through meter shaft CF signal and DC power supply is prevented to pass through.
Setting frequency meter shaft frequency shift circuit corresponding with meter shaft CF signal frequency, is used in the indoor isolator
It loads on meter shaft CF signal to track-circuit signalling cable；Frequency and meter shaft CF signal frequency are set in the outer isolator
The corresponding meter shaft frequency shift circuit of rate, for separating meter shaft CF signal from track circuit.Meter shaft frequency shift circuit is for leading to
Meter shaft CF signal is crossed, and track-circuit signalling is prevented to pass through.As shown in figure 4, including the first meter in the outdoor isolator
Axis frequency shift circuit, one end are connected with track-circuit signalling cable, and the other end connects amplification modulating circuit, are used for meter shaft carrier frequency
Signal is loaded on track-circuit signalling cable from amplification modulation unit and transmits, and track-circuit signalling is isolated and enters amplification tune
Unit processed.The set of frequency of first frequency shift circuit is corresponding with meter shaft CF signal frequency, it is generally preferable to and it is 20-100KHz, but
It is to be different from track-circuit signalling frequency (1700-2600Hz)；Meter shaft CF signal can smoothly pass through the first frequency shift circuit,
But track-circuit signalling cannot pass through the first frequency shift circuit.
As shown in figure 4, further including the second frequency shift circuit, one end and track-circuit signalling cable in the indoor isolator
It is connected, the other end is connect with demodulating unit, for meter shaft CF signal to be transferred to after track-circuit signalling electrical cables separate
Demodulating unit, and track-circuit signalling is isolated and enters demodulating unit.The set of frequency and meter shaft CF signal of second frequency shift circuit
Frequency is corresponding, generally 20-100KHz, but is different from track-circuit signalling frequency (1700-2600Hz), therefore, meter shaft
CF signal can smoothly pass through the second frequency shift circuit, but track-circuit signalling cannot pass through the second frequency shift circuit.
As shown in figure 4, the first meter shaft frequency shift circuit by first capacitor C1 it is in parallel with the first inductance L1 after with second
Inductance L2 is in series；First capacitor C1 and the first inductance L1 forms antiresonant circuit, and one end connects track-circuit signalling electricity
Cable, the other end connect the second inductance L2；The other end connection amplification modulation unit of second inductance L2；The frequency of first frequency shift circuit
Selection is corresponding with meter shaft carrier frequency, for passing through meter shaft CF signal, wherein first inductance L1=100mH, first capacitor C1
=63.3nF, the second inductance L2 are for preventing track-circuit signalling from passing through, wherein second inductance L2=292uH.
As shown in figure 4, the second meter shaft frequency shift circuit by first capacitor C1 it is in parallel with the first inductance L1 after with second
Inductance L2 is in series；First capacitor C1 and the first inductance L1 forms antiresonant circuit, and one end connects track-circuit signalling electricity
Cable, the other end connect the second inductance L2；The other end of second inductance L2 connects demodulating unit；The frequency of second frequency shift circuit selects
It is corresponding with meter shaft carrier frequency, for passing through meter shaft CF signal, wherein first inductance L1=100mH, first capacitor C1=
63.3nF, the second inductance L2 are for preventing track-circuit signalling from passing through, wherein second inductance L2=292uH.
Meter shaft high-frequency isolation circuit is set in the indoor isolator, for meter shaft CF signal injection electricity to be isolated
Road indoor equipment.Meter shaft high-frequency isolation circuit is used to pass through track-circuit signalling and prevents meter shaft CF signal by reaching track
Circuit arrangement indoor equipment.As shown in figure 4, further including meter shaft high-frequency isolation circuit in the interior isolator, it is set to track
Between circuit signal cable and track circuit indoor equipment, one end connects track-circuit signalling cable, and the other end connects track electricity
Road indoor equipment, for meter shaft CF signal injection circuit indoor equipment to be isolated.The frequency of meter shaft high-frequency isolation circuit is set
It is corresponding to be placed in track-circuit signalling frequency, but is different from meter shaft CF signal frequency, therefore, track-circuit signalling can smoothly lead to
Meter shaft high-frequency isolation circuit is crossed, and meter shaft CF signal cannot be by meter shaft high-frequency isolation circuit, so that meter shaft carrier frequency be prevented to believe
Number injection circuit indoor equipment.
Further include meter shaft high-frequency isolation circuit in the outdoor isolator, is set to track-circuit signalling cable and track electricity
Between the outdoor equipment of road, one end connects track-circuit signalling cable, and the other end connects track circuit outdoor equipment, based on being isolated
Axis CF signal injection circuit outdoor equipment.The set of frequency of meter shaft high-frequency isolation circuit is in track-circuit signalling frequency phase
It is corresponding, but it is different from meter shaft CF signal frequency, therefore, track-circuit signalling can pass through meter shaft high-frequency isolation circuit, and
Meter shaft CF signal cannot be by meter shaft high-frequency isolation circuit, to prevent to set outside meter shaft CF signal injection circuit room
It is standby.
As shown in figure 4, the meter shaft high-frequency isolation circuit is connected on track-circuit signalling cable by two resonance circuits
Between track circuit indoor equipment；One of resonance circuit is made of resonance electricity the 4th inductance L4 and the 4th capacitor C4 parallel connection
Road, resonance frequency is corresponding with track-circuit signalling frequency 1700-2000HZ, for preventing meter shaft CF signal from passing through and allowing
Track-circuit signalling passes through, wherein the 4th inductance L4=0.5mH, C5=32nF；Another resonance circuit is by the 5th inductance L5 and
Five capacitor C5 parallel connections constitute resonance circuit, and resonance frequency is corresponding with track-circuit signalling frequency 2200-2600, and meter shaft is prevented to carry
Frequency signal passes through and track-circuit signalling is allowed to pass through, wherein the 5th inductance L5=0.5mH, the 5th capacitor C5=32nF；Two humorous
Vibration circuit is connected between track-circuit signalling cable and track circuit equipment, is prevented meter shaft CF signal from passing through, is passed through respectively
The track-circuit signalling of different frequency (1700,2000,2300,2600HZ).Track circuit equipment can be in track circuit room
Equipment or track circuit outdoor equipment.
It is gone here and there respectively between the track-circuit signalling cable and track circuit indoor equipment and track circuit outdoor equipment
Connection setting blocking unit, is respectively serve to separate DC power supply injection circuit indoor equipment and track circuit outdoor equipment.Such as
Further include the first blocking unit shown in Fig. 2,3,4, in the outdoor isolator, is set to track-circuit signalling cable and meter shaft
Between outdoor equipment, one end connects track-circuit signalling cable, and the other end connects track circuit outdoor equipment, with isolated DC electricity
Source injection circuit outdoor equipment；Further include the second blocking unit in the interior isolator, is set to track-circuit signalling
Between cable and meter shaft high-frequency circuit or meter shaft indoor equipment, one end connects track-circuit signalling cable, and the other end connects track
Circuit indoor equipment or high-frequency isolation circuit, for from DC power supply injection circuit outdoor equipment.First blocking unit
With the second blocking unit, it is used for isolated DC power supply injection circuit arrangement, but track-circuit signalling is allowed to pass through
Up to track circuit equipment.The blocking unit is capacitance C, and the Capacity Selection of capacitance C is 50uF.
As shown in figure 4, the demodulating unit includes DC power supplier and demodulator circuit, DC power supplier is for generating
DC power supply simultaneously accesses the power path end in indoor isolator, provides power supply, demodulator circuit junction chamber to meter shaft outdoor equipment
Interior isolator is meter shaft direct current voltage pulse signal for restoring meter shaft CF signal, is supplied to meter shaft host process.
As shown in figure 4, amplification modulation unit includes the DC power supply circuit, modulation circuit and amplifying circuit set gradually,
DC power supply circuit connect outdoor isolator in power supply split circuit power path end, and out-put supply to demodulator circuit, put
Big circuit and wheel detector, modulation circuit connect outdoor isolator and amplifying circuit, and amplifying circuit connects wheel detector；It puts
Big modulation circuit amplifies the direct current voltage pulse signal that wheel detector is sent, and modulation circuit is by meter shaft DC voltage arteries and veins
Rushing signal modulation is meter shaft CF signal, by outdoor isolator through the processing sent to the room of track-circuit signalling cable.
Track-circuit signalling cable of the present invention is SPT digital signal cable, it is of course also possible to select any be suitble to
The cable of track-circuit signalling transmission.
Claims (9)
1. a kind of method with track-circuit signalling cable transmission axle-counting signal, other feature are:
Setting checks wheel and generates the wheel detector and the vehicle of setting processing indoors of direct current voltage pulse signal on rail
The meter shaft host of wheel sensor signal；
Wheel detector is generated into direct current voltage pulse signal modulation into the meter shaft carrier frequency of suitable track-circuit signalling cable transmission
Signal；The meter shaft CF signal frequency is different from track-circuit signalling frequency；
Meter shaft CF signal is loaded on track-circuit signalling cable；
Meter shaft CF signal is transmitted with track-circuit signalling cable；
Meter shaft CF signal is separated from track-circuit signalling cable；
Meter shaft CF signal is reduced to direct current voltage pulse signal；
Give direct current voltage pulse signal to meter shaft host process.
2. using the method for track-circuit signalling cable transmission axle-counting signal according to claim 1, it is characterised in that:
Be disposed on the signal path of the wheel detector and meter shaft host amplification modulation unit, outdoor isolator,
Track-circuit signalling cable, indoor isolator, demodulating unit；
The direct current voltage pulse signal that wheel detector generates is amplified and is modulated into and is suitble to the rail by the amplification modulation unit
Road circuit signal cable transmits meter shaft CF signal；
Meter shaft CF signal is loaded on the track-circuit signalling cable by the outdoor isolator；
The track-circuit signalling cable transmission meter shaft CF signal；
The interior isolator, by the meter shaft CF signal from the track-circuit signalling electrical cables separate；
The demodulating unit receives the meter shaft CF signal that the indoor isolator is isolated and is reduced to DC voltage arteries and veins
Rush signal.
3. the method according to claim 1 or claim 2 with track-circuit signalling cable transmission axle-counting signal, it is characterised in that:
DC power supplier is set in meter shaft indoor equipment；
DC power supply is loaded on track-circuit signalling cable；
With track-circuit signalling cable transmission DC power supply；
DC power supply is separated from track-circuit signalling cable and is used to meter shaft outdoor equipment.
4. using the method for track-circuit signalling cable transmission axle-counting signal according to claim 3, it is characterised in that:
DC power supplier is also disposed on the meter shaft host and the signal path of wheel detector, power supply synthesizes electricity
Road, power supply split circuit；
The DC power supplier is arranged in isolator indoors or demodulating unit, for providing DC power supply；
The power supply combiner circuit is arranged in isolator indoors or demodulating unit, for DC power supply to be loaded into track circuit
On signal cable；
The power supply split circuit setting is in outdoor isolator or amplification modulation unit, for believing DC power supply from track circuit
It is separated in number cable.
5. using the method for track-circuit signalling cable transmission axle-counting signal according to claim 4, it is characterised in that:
It sets in the track-circuit signalling cable with connecting respectively between track circuit indoor equipment and track circuit outdoor equipment
Blocking unit is set, DC power supply injection circuit indoor equipment and track circuit outdoor equipment are respectively serve to separate.
6. using the method for track-circuit signalling cable transmission axle-counting signal according to claim 3, it is characterised in that:
The setting frequency meter shaft frequency shift circuit corresponding with meter shaft CF signal frequency in the indoor isolator, for loading
On meter shaft CF signal to track-circuit signalling cable；
Frequency meter shaft frequency shift circuit corresponding with meter shaft CF signal frequency is set in the outer isolator, is used for meter shaft
CF signal is separated from track circuit.
7. using the method for track-circuit signalling cable transmission axle-counting signal according to claim 6, it is characterised in that: described
Meter shaft high-frequency isolation circuit is set in indoor isolator, for meter shaft CF signal injection circuit indoor equipment to be isolated.
8. using the method for track-circuit signalling cable transmission axle-counting signal according to claim 7, it is characterised in that: described
Meter shaft high-frequency isolation circuit is set in outdoor isolator, for meter shaft CF signal injection circuit outdoor equipment to be isolated.
9. -8 any method with track-circuit signalling cable transmission axle-counting signal according to claim 1, it is characterised in that: described
Meter shaft carrier frequency be preferably 20KHz to 100KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969094.1A CN109159798B (en) | 2018-08-23 | 2018-08-23 | Method for transmitting axle counting signal by using track circuit signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969094.1A CN109159798B (en) | 2018-08-23 | 2018-08-23 | Method for transmitting axle counting signal by using track circuit signal cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109159798A true CN109159798A (en) | 2019-01-08 |
| CN109159798B CN109159798B (en) | 2023-06-30 |
Family
ID=64896632
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810969094.1A Active CN109159798B (en) | 2018-08-23 | 2018-08-23 | Method for transmitting axle counting signal by using track circuit signal cable |
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| CN111376947A (en) * | 2020-04-01 | 2020-07-07 | 北京永列科技有限公司 | Axle counting system and wireless communication method thereof |
| WO2024092542A1 (en) * | 2022-11-02 | 2024-05-10 | 通号(西安)轨道交通工业集团有限公司北京分公司 | Train positioning system and positioning method |
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