CN109194368A - A kind of method that track-circuit signalling cable transmits non-track-circuit signalling with cable - Google Patents
A kind of method that track-circuit signalling cable transmits non-track-circuit signalling with cable Download PDFInfo
- Publication number
- CN109194368A CN109194368A CN201810969715.6A CN201810969715A CN109194368A CN 109194368 A CN109194368 A CN 109194368A CN 201810969715 A CN201810969715 A CN 201810969715A CN 109194368 A CN109194368 A CN 109194368A
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- track
- circuit
- signalling
- cable
- equipment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/066—Telephone sets adapted for data transmision
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
A kind of method that track-circuit signalling cable transmits non-track-circuit signalling with cable, include the steps that track circuit equipment and non-track circuit equipment is arranged, the non-track-circuit signalling that the non-track circuit outdoor equipment generates is modulated into non-track circuit CF signal；With the non-track circuit CF signal of track-circuit signalling cable transmission to interior；Non- track circuit CF signal is separated indoors and is reduced to non-track circuit indoor equipment described in non-track-circuit signalling and processes the non-track-circuit signalling of the reduction.The present invention realizes that track-circuit signalling and non-track-circuit signalling are transmitted with cable, and non-track circuit equipment saves material without being in addition laid with signal private cable, reduces cost, reduce engineering construction, and reduce later maintenance workload.
Description
Technical field
The invention belongs to railway signal system technical field, in particular to a kind of track-circuit signalling cable transmits non-with cable
The method of track-circuit signalling.
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 checks the situation of train with track circuit, judges area
Section is idle or occupies, and provides driving condition to interlock system.Track circuit is the key equipment in railway signal system, extensively
Using in field of track traffic.Track circuit includes transmitter and the reception, processing track circuit letter for generating track-circuit signalling
Number and output section is idle or the receiver that occupies, the track-circuit signalling that the transmitter generates is successively through transmitting terminal thunder-lightning
Cable analog network, track-circuit signalling cable (i.e. SPT digital signal cable), transmitting terminal matching transformer to rail, then from
Matching transformer, track-circuit signalling cable, the receiving end lightning-protection cable simulation network at the received end of rail, by the receiver
It receives and processes.Track circuit is routed to interior from outdoor using dedicated track-circuit signalling cable, and signal connects track electricity
External equipment in the room of road；Track circuit equipment signal uses track-circuit signalling cable transmission.
The other equipment in side, such as axle counting system, monitoring system equipment in orbit are set, is referred to as non-track circuit and sets
Standby, these equipment are also required to connect indoor equipment with outdoor equipment signal using private cable, currently, various non-track circuits
Equipment is all respectively laid with private cable, realizes the signal transmission of indoor external equipment, and various non-track circuit equipments are respectively laid with specially
Signal is transmitted with signal cable, cable used is at high cost, and difficulty of construction is complicated, and mutual do is likely present between signal cable
It disturbs, in utilization, needs to safeguard the signal cable being respectively laid with, in the prior art, lack a kind of method, using track
The signal of the non-track circuit equipment of circuit signal cable transmission.
Summary of the invention
There are problems for the prior art by the present invention, and non-rail can be transmitted with cable with track-circuit signalling cable by providing one kind
The method of road circuit arrangement signal.
The technical solution of present invention solution technical problem are as follows:
A kind of method that track-circuit signalling cable transmits non-track-circuit signalling with cable, it is characterised in that include the following steps:
S11: setting track circuit equipment and laying track-circuit signalling cable；The track circuit equipment includes track circuit room
External equipment and track circuit indoor equipment, track circuit indoor and outdoor equipment is by track-circuit signalling cable connection；
S12: non-track circuit equipment is set；The non-track circuit equipment includes non-track circuit indoor equipment and non-track electricity
Road outdoor equipment；
S13: the non-track-circuit signalling that the non-track circuit outdoor equipment generates is modulated into non-track circuit CF signal；
The carrier frequency of the non-track circuit CF signal is different from track-circuit signalling carrier frequency；
S14: with the non-track circuit CF signal of track-circuit signalling cable transmission to interior；
S15: non-track circuit CF signal is separated indoors and is reduced to non-track-circuit signalling；
S16: the non-track circuit indoor equipment processes the non-track-circuit signalling of the reduction.
The further technical solution of the present invention is further comprising the steps of:
S21: being arranged modulation unit in the non-track circuit outdoor equipment, suitable for non-track-circuit signalling to be modulated into
The non-track circuit CF signal of the track-circuit signalling cable transmission；
S22: in setting outdoor isolator, for non-track circuit CF signal to be loaded into the track-circuit signalling cable
Transmission；
S23: being arranged indoor isolator, for dividing the non-track circuit CF signal from the track-circuit signalling cable
From；
S24: setting demodulating unit is used to receive the non-track circuit CF signal that the indoor isolator is isolated and is gone back
It originally was non-track-circuit signalling；
S25: the non-track circuit indoor equipment receives the non-track-circuit signalling of the reduction, carries out calculation process.
The further technical solution of the present invention is further comprising the steps of:
S31: being arranged DC power supplier in the demodulating unit, for providing direct current for non-track circuit outdoor equipment
Source；
S32: power supply combiner circuit is set in the indoor isolator or the demodulating unit, for adding DC power supply
It is downloaded on the track-circuit signalling cable and transmits；
S33: being arranged power supply split circuit in the outdoor isolator or modulation unit, for DC power supply is electric from track
It is separated in the signal cable of road；
S34: two blocking units, one of blocking cell isolation direct current are arranged in series on the track-circuit signalling cable
Power supply enters the track circuit indoor equipment, another blocking cell isolation DC power supply, which enters in the track circuit room, to be set
It is standby.
The further technical solution of the present invention is also:
It is corresponding with non-track-circuit signalling CF signal frequency that frequency is provided in the interior isolator and outdoor isolator
Frequency shift circuit, frequency shift circuit load or separate non-track circuit CF signal；Track circuit is isolated in the frequency shift circuit
Signal enters non-track circuit indoor equipment or non-track circuit outdoor equipment.
The further technical solution of the present invention are as follows:
High-frequency isolation circuit is set in the indoor isolator and/or outdoor isolator, for non-track circuit carrier frequency to be isolated
Signal injection circuit indoor equipment and/or track circuit outdoor equipment.
The further technical solution of the present invention are as follows:
The frequency shift circuit set of frequency is 20KHz to 100KHz.
The positive effect of the present invention is: non-track-circuit signalling being modulated by the method for the present invention and is suitble to track-circuit signalling
The non-track circuit CF signal of cable transmission, and be loaded on track-circuit signalling cable, it will by track-circuit signalling cable
Non- track circuit CF signal is transferred to interior, then again separates non-track circuit equipment CF signal, and be reduced into
Non- track circuit equipment signal realizes that track-circuit signalling and non-track-circuit signalling are transmitted with cable, non-track circuit equipment without
It need to be in addition laid with signal private cable, saved material, cost is reduced, reduce engineering construction, and reduce later maintenance work
Amount.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Detailed description of the invention
Fig. 1 is the system principle diagram of the method for the present invention.
Specific embodiment
As shown in Fig. 1 combination systematic schematic diagram, a kind of track-circuit signalling cable transmits non-track-circuit signalling with cable
Method includes the following steps:
S11: setting track circuit equipment and laying track-circuit signalling cable；The track circuit equipment includes track circuit room
External equipment and track circuit indoor equipment, track circuit indoor and outdoor equipment is by track-circuit signalling cable connection；
S12: non-track circuit equipment is set；The non-track circuit equipment includes non-track circuit indoor equipment and non-track electricity
Road outdoor equipment；
S13: the non-track-circuit signalling that the non-track circuit outdoor equipment generates is modulated into non-track circuit CF signal；
The carrier frequency of the non-track circuit CF signal is different from track-circuit signalling carrier frequency；
S14: with the non-track circuit CF signal of track-circuit signalling cable transmission to interior；
S15: non-track circuit CF signal is separated indoors and is reduced to non-track-circuit signalling；
S16: the non-track circuit indoor equipment processes the non-track-circuit signalling of the reduction.
As previously mentioned, outdoor track-circuit signalling and non-track-circuit signalling are synthesized together and are passed through by the method for the present invention
Track-circuit signalling cable transmission is to interior, indoors by the track-circuit signalling and non-track electricity on track-circuit signalling cable
Road-load frequency Signal separator comes out, and is transferred to track circuit indoor equipment and the processing of non-track circuit indoor equipment respectively, realizes rail
Road circuit signal and non-track-circuit signalling are transmitted using track-circuit signalling cable with cable, are respectively laid with profession with two kinds of equipment
Signal cable is compared, and is saved material, and cost is reduced, and reduces engineering construction, and reduce later maintenance workload, has very
High use value.Track-circuit signalling frequency is 1700 ~ 2600Hz, and the set of frequency of frequency shift circuit is 20KHz ~ 100KHz.
The further technical solution of the present invention includes the following steps are as follows:
S21: being arranged modulation unit in the non-track circuit outdoor equipment, suitable for non-track-circuit signalling to be modulated into
The non-track circuit CF signal of the track-circuit signalling cable transmission；
S22: in setting outdoor isolator, for non-track circuit CF signal to be loaded into the track-circuit signalling cable
Transmission；
S23: being arranged indoor isolator, for dividing the non-track circuit CF signal from the track-circuit signalling cable
From；
S24: setting demodulating unit is used to receive the non-track circuit CF signal that the indoor isolator is isolated and is gone back
It originally was non-track-circuit signalling；
S25: the non-track circuit indoor equipment receives the non-track-circuit signalling of the reduction, carries out calculation process.
Track-circuit signalling cable of the present invention is transmitted with cable in the method for non-track-circuit signalling, including setting isolator and
Modem module；When the isolator and modem module are arranged at outdoor, for non-track-circuit signalling to be modulated
To be suitable for the non-track circuit CF signal of track-circuit signalling cable transmission, and be loaded on track-circuit signalling cable with
Track-circuit signalling is transmitted with cable；For track-circuit signalling is electric when the isolator and modem module are arranged indoors
The Signal separator transmitted on cable is track-circuit signalling and non-track circuit CF signal, and restores non-track circuit CF signal
For non-track-circuit signalling.At outdoor, the modem module is used to for non-track-circuit signalling being modulated to non-track electricity
Road CF signal；When indoors, the modem module is used to non-track circuit CF signal being reduced to non-track circuit
Signal.
A further technical solution of the present invention is:
It is corresponding with non-track-circuit signalling CF signal frequency that frequency is provided in the interior isolator and outdoor isolator
Frequency shift circuit, frequency shift circuit load or separate non-track circuit CF signal；Track circuit is isolated in the frequency shift circuit
Signal enters non-track circuit indoor equipment or non-track circuit outdoor equipment.
Described frequency shift circuit one end and track-circuit signalling cable connection, the other end connect with modem module, are used for
By non-track circuit CF signal, and track-circuit signalling is prevented to enter non-track circuit equipment；In the isolator also
Including high-frequency isolation circuit, one end and track-circuit signalling cable connection, the other end are connect with track-circuit signalling equipment mouth, are used
In by track-circuit signalling, and prevent non-track circuit CF signal injection circuit arrangement.At outdoor, modulation /demodulation
Module connects non-track circuit outdoor equipment, the non-track-circuit signalling that non-track circuit outdoor equipment generates, by modulation /demodulation
Module is modulated into non-track circuit CF signal, and the CF signal frequency is corresponding with the frequency of frequency shift circuit, and distinguishes
In track-circuit signalling frequency, the frequency shift circuit can be such that non-track circuit CF signal passes through, and be loaded into coupled
It is transmitted on the track-circuit signalling cable connect, still, since the frequency of track-circuit signalling frequency and frequency shift circuit is not correspond to,
Thus modem module cannot be reached by frequency shift circuit.When indoors, the frequency of the frequency shift circuit and non-track circuit
Signal carrier frequency is corresponding, the non-track circuit CF signal on track-circuit signalling cable can be made to pass through, and be transferred to
Non- track circuit CF signal is separated from track-circuit signalling cable, is transferred to modulatedemodulate by modem module
Unit is adjusted, non-track-circuit signalling is reduced to by modem module；Track-circuit signalling frequency and frequency shift circuit frequency not phase
Corresponding, frequency shift circuit can prevent track-circuit signalling from reaching modem module.
High-frequency isolation circuit is set in the indoor isolator and/or outdoor isolator, for non-track circuit to be isolated
CF signal injection circuit indoor equipment and/or track circuit outdoor equipment.
The frequency of the high-frequency isolation circuit is corresponding with track-circuit signalling frequency, but is different from non-track-circuit signalling
Carrier frequency, high-frequency isolation circuit can effectively pass through track-circuit signalling, while can prevent non-track circuit CF signal
Injection circuit indoor equipment or outdoor equipment.
The further technical solution of the present invention are as follows:
S31: being arranged DC power supplier in the demodulating unit, for providing direct current for non-track circuit outdoor equipment
Source；
S32: power supply combiner circuit is set in the indoor isolator or the demodulating unit, for adding DC power supply
It is downloaded on the track-circuit signalling cable and transmits；
S33: being arranged power supply split circuit in the outdoor isolator or modulation unit, for DC power supply is electric from track
It is separated in the signal cable of road；
S34: two blocking units, one of blocking cell isolation direct current are arranged in series on the track-circuit signalling cable
Power supply enters the track circuit indoor equipment, another blocking cell isolation DC power supply, which enters in the track circuit room, to be set
It is standby.
It include power circuit in well-behaved inventive method, one end connects track-circuit signalling cable, and the other end connects modulatedemodulate
Adjust unit, indoors when, the power circuit is used to DC power supply being loaded into track-circuit signalling cable, at outdoor, institute
It states power circuit and isolates DC power supply from track-circuit signalling cable, and be transferred to non-track circuit equipment, give non-track
Circuit outdoor equipment uses.Power circuit also can be set in modem module.The electricity consumption of non-track circuit outdoor equipment institute
Source, also by track-circuit signalling cable transmission.When indoors, DC power supply is loaded into track-circuit signalling electricity by power circuit
On cable, by track-circuit signalling cable transmission to outdoor, to it is outdoor when, power circuit is by DC power supply from track-circuit signalling
It separates on cable, is used to non-track circuit outdoor equipment, i.e., power supply used in non-track circuit outdoor equipment is also by rail
Road circuit signal cable is transmitted with cable.
Further include blocking unit in the isolator, is arranged in series in track-circuit signalling cable and track circuit equipment
Between, it is used for isolated DC power supply injection circuit arrangement；When indoors, the blocking cell isolation DC power supply enters rail
Road circuit indoor equipment, at outdoor, the blocking cell isolation DC power supply injection circuit outdoor equipment.Blocking is set
Unit is mainly used for isolating DC power supply from track-circuit signalling cable injection circuit indoor equipment and outdoor equipment, together
When, blocking unit does not influence the transmission between track circuit indoor equipment and outdoor equipment of track-circuit signalling.Such as Fig. 1 institute
Show, the blocking unit is the blocking being arranged in series between track-circuit signalling cableport and track circuit equipment port
Capacitor.The Capacity Selection of capacitance C is 50uF.
The further technical solution of the present invention are as follows: DC power supply mould is set in the isolator or modem module
Block is connected to the power circuit；When indoors, by track-circuit signalling cable transmission to outdoor for being non-track electricity
Road outdoor equipment provides DC power supply.Power module can be set in isolator or modem module, can also be by it
Its special DC power supply provides, as long as DC power supply can be provided, and passes through aforementioned power source circuit transmission.
Power circuit as described in Figure 1 is made of third inductance L3 and the second capacitor C2, third inductance L3 and the second capacitor
Common end is formed after one end of C2 is in parallel and connects track-circuit signalling cable, and the other end of third inductance L3 connects modulation /demodulation list
DC power supplier in member, the modulation-demodulation circuit of the other end connection modem module of the second capacitor C2.Second capacitor
C2=10uF, third inductance L3=20mH.Third inductance L3 is used to pass through DC power supply and prevents non-track circuit CF signal logical
It crosses, the second capacitor C2 is used to pass through non-track circuit CF signal and DC power supply is prevented to pass through.
As shown in Figure 1, the frequency shift circuit connect track electricity with one end after the first inductance L1 parallel connection by first capacitor C1
Road signal cable, the other end are connected with the second inductance L2, the modulation /demodulation electricity of the other end connection demodulating unit of the second inductance L2
Road and DC power supplier.First capacitor C1 and the first inductance L1 forms antiresonant circuit, frequency selection and non-track electricity
Road carrier frequency is corresponding, for passing through non-track circuit 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 described in Figure 1, the high-frequency isolation circuit is arranged in series in track circuit equipment port by resonance circuit and is moved
Frequency circuit and power circuit are connected between the node of track-circuit signalling cableport, and are located at track circuit equipment port
Side, including two resonance circuits, one of resonance circuit constitute resonance circuit by the 4th inductance L4 and the 4th capacitor C4 parallel connection,
For preventing non-track circuit CF signal from passing through and track-circuit signalling being allowed to pass through (1700 and 2000HZ signal), the 4th electricity
Feel L4=0.5mH, C5=32nF；Another resonance circuit constitutes resonance circuit, resistance by the 5th inductance L5 is in parallel with the 5th capacitor C5
Only non-track circuit CF signal passes through and track-circuit signalling is allowed to pass through (2300 and 2600HZ), and the 5th inductance L5=
0.5mH, the 5th capacitor C5=32nF；Two resonance circuits are respectively used to through different frequency (1700,2000,2300,2600HZ)
Track-circuit signalling, and prevent non-track circuit CF signal (20k-100kHz).When the present invention is applied to interior, demodulation is single
Member includes DC power supplier and modulation-demodulation circuit, and DC power supplier is for generating DC power supply and connecting power circuit
Inductance L3 provides power supply to non-track circuit external equipment by track-circuit signalling cable, and modulation-demodulation circuit restores non-track
Circuit CF signal is non-track-circuit signalling, is supplied to non-track circuit indoor equipment processing.
The track-circuit signalling cable is SPT digital signal cable, it is of course also possible to select any suitable track electricity
The cable of road signal transmission.
Claims (6)
1. a kind of method that track-circuit signalling cable transmits non-track-circuit signalling with cable, it is characterised in that including walking as follows
It is rapid:
S11: setting track circuit equipment and laying track-circuit signalling cable；The track circuit equipment includes track circuit room
External equipment and track circuit indoor equipment, track circuit indoor and outdoor equipment is by track-circuit signalling cable connection；
S12: non-track circuit equipment is set；The non-track circuit equipment includes non-track circuit indoor equipment and non-track electricity
Road outdoor equipment；
S13: the non-track-circuit signalling that the non-track circuit outdoor equipment generates is modulated into non-track circuit CF signal；
The carrier frequency of the non-track circuit CF signal is different from track-circuit signalling carrier frequency；
S14: with the non-track circuit CF signal of track-circuit signalling cable transmission to interior；
S15: non-track circuit CF signal is separated indoors and is reduced to non-track-circuit signalling；
S16: the non-track circuit indoor equipment processes the non-track-circuit signalling of the reduction.
2. the method that track-circuit signalling cable transmits non-track-circuit signalling with cable, feature exist according to claim 1
In including the following steps:
S21: being arranged modulation unit in the non-track circuit outdoor equipment, suitable for non-track-circuit signalling to be modulated into
The non-track circuit CF signal of the track-circuit signalling cable transmission；
S22: in setting outdoor isolator, for non-track circuit CF signal to be loaded into the track-circuit signalling cable
Transmission；
S23: being arranged indoor isolator, for dividing the non-track circuit CF signal from the track-circuit signalling cable
From；
S24: setting demodulating unit is used to receive the non-track circuit CF signal that the indoor isolator is isolated and is gone back
It originally was non-track-circuit signalling；
S25: the non-track circuit indoor equipment receives the non-track-circuit signalling of the reduction, carries out calculation process.
3. the method that track-circuit signalling cable transmits non-track-circuit signalling with cable, feature exist according to claim 2
In including the following steps:
S31: being arranged DC power supplier in the demodulating unit, for providing direct current for non-track circuit outdoor equipment
Source；
S32: power supply combiner circuit is set in the indoor isolator or the demodulating unit, for adding DC power supply
It is downloaded on the track-circuit signalling cable and transmits；
S33: being arranged power supply split circuit in the outdoor isolator or modulation unit, for DC power supply is electric from track
It is separated in the signal cable of road；
S34: two blocking units, one of blocking cell isolation direct current are arranged in series on the track-circuit signalling cable
Power supply enters the track circuit indoor equipment, another blocking cell isolation DC power supply, which enters in the track circuit room, to be set
It is standby.
4. the method that track-circuit signalling cable transmits non-track-circuit signalling with cable according to Claims 2 or 3, feature
It is:
It is corresponding with non-track-circuit signalling CF signal frequency that frequency is provided in the interior isolator and outdoor isolator
Frequency shift circuit, frequency shift circuit load or separate non-track circuit CF signal；Track circuit is isolated in the frequency shift circuit
Signal enters non-track circuit indoor equipment or non-track circuit outdoor equipment.
5. the method that track-circuit signalling cable transmits non-track-circuit signalling with cable, feature exist according to claim 4
In: the setting high-frequency isolation circuit in the indoor isolator and/or outdoor isolator, for non-track circuit carrier frequency letter to be isolated
Number injection circuit indoor equipment and/or track circuit outdoor equipment.
6. the method that track-circuit signalling cable transmits non-track-circuit signalling with cable, feature exist according to claim 4
In: the frequency shift circuit set of frequency is 20KHz to 100KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969715.6A CN109194368B (en) | 2018-08-23 | 2018-08-23 | Method for transmitting non-track circuit signal by same cable of track circuit signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810969715.6A CN109194368B (en) | 2018-08-23 | 2018-08-23 | Method for transmitting non-track circuit signal by same cable of track circuit signal cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109194368A true CN109194368A (en) | 2019-01-11 |
| CN109194368B CN109194368B (en) | 2021-10-29 |
Family
ID=64919387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810969715.6A Active CN109194368B (en) | 2018-08-23 | 2018-08-23 | Method for transmitting non-track circuit signal by same cable of track circuit signal cable |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115208321A (en) * | 2022-07-12 | 2022-10-18 | 固安信通信号技术股份有限公司 | Phase modulation method, demodulation algorithm and application of track circuit characteristic signal |
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| US20100167730A1 (en) * | 2008-12-30 | 2010-07-01 | Hong Sup Shin | Cell management method and mobile telecommunication system for the same |
| CN105857342A (en) * | 2016-04-22 | 2016-08-17 | 北京永列科技有限公司 | Power supply and communication superposition method for axle counting system |
| CN106184286A (en) * | 2016-09-09 | 2016-12-07 | 北京和利时系统工程有限公司 | A kind of frequency shift modulated track circuit system |
| CN206928820U (en) * | 2017-06-22 | 2018-01-26 | 中车唐山机车车辆有限公司 | Rail vehicle switchs controlling device for doors and rail vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2601484Y (en) * | 2003-03-31 | 2004-01-28 | 杨世武 | Digital coding track circuit device |
| CN201283879Y (en) * | 2008-10-06 | 2009-08-05 | 北京全路通信信号研究设计院 | Outdoor isolator |
| US20100167730A1 (en) * | 2008-12-30 | 2010-07-01 | Hong Sup Shin | Cell management method and mobile telecommunication system for the same |
| CN105857342A (en) * | 2016-04-22 | 2016-08-17 | 北京永列科技有限公司 | Power supply and communication superposition method for axle counting system |
| CN106184286A (en) * | 2016-09-09 | 2016-12-07 | 北京和利时系统工程有限公司 | A kind of frequency shift modulated track circuit system |
| CN206928820U (en) * | 2017-06-22 | 2018-01-26 | 中车唐山机车车辆有限公司 | Rail vehicle switchs controlling device for doors and rail vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115208321A (en) * | 2022-07-12 | 2022-10-18 | 固安信通信号技术股份有限公司 | Phase modulation method, demodulation algorithm and application of track circuit characteristic signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109194368B (en) | 2021-10-29 |
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