CN209274617U - A kind of all-electronin phase-sensitive track circuits module - Google Patents
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Abstract
The utility model embodiment discloses a kind of all-electronin phase-sensitive track circuits module, the all-electronin phase-sensitive track circuits module is connected between the interlock logic unit of computer interlock system and protection box, comprising: logic control element interconnected and acquisition control unit；Wherein, the logic control element, it is connected by the interlock logic unit with the control instruction output end of the control and display machine in the computer interlock system, the state of track section where the information of the locally supplied power source for being acquired according to the acquisition control unit and the information judgement of track power supply；The acquisition control unit for acquiring the information of locally supplied power source and the information of track power supply, and is transmitted to the logic control element.The example scheme has the characteristics that highly integrated and small in size.
Description
Technical field
The utility model embodiment is related to orbits controlling technology, espespecially a kind of all-electronin phase-sensitive track circuits module.
Background technique
In current China's signal system, interlock system is controlled for signaling at stations, and computer interlocking equipment, which has been promoted, answers
With recent two decades, the product structure and technical conditions of comparative maturity have been formed.Its control logic of current computer interlocking equipment
And external structure is still inherited in 6502 electric interlocking systems, external equipment still using gravity-type safety relay as medium into
The safe input and output control of row picks up or falls manipulation outdoor equipment movement by controlling gravity-type safety relay coils, leads to
It crosses relay contact state and obtains outdoor equipment state.
In the occupancy situation that railway signal system middle orbit circuit is for supervising route, and by train operation and signal
Display etc. connects, i.e., transmits running information to train by track circuit.Track circuit is the important foundation of railway signal
Equipment, its performance directly affect traffic safety and conevying efficiency.
As shown in Figure 1, being 25Hz phase-sensitive track circuits schematic diagram.25Hz phase-sensitive track circuits are mainly used in station electrically
Change section, continuously powered using exchange 25Hz power supply, receiving end is using exchange two track relay (JRJC1-70/ of binary
240).25Hz power supply panel confesses 25Hz track power supply and locally supplied power source, and the advanced track circuit of phase of locally supplied power source respectively
90 ° of the phase of power supply.Track power supply is confessed by interior, by cable to outdoor, through sending end 25Hz track power transformer
(BG25), sending end current-limiting resistance (Rx), sending end choke transformer (BE25), steel rail line, receiving end choke transformer
(BE25), receiving end 25Hz orbiting relay transformer (BG25), cable run, send interior back to, by lightning protection compensator (Z), prevent
The track coil that box (HF) is protected to AC two element two position relay (GJ) is powered.The local coil of two relays (GJ) of binary
25Hz power supply is confessed by interior.Phase and frequency requirement as defined in meeting when the power supply of track coil and the power supply of local coil
When, GJ is picked up, and track circuit is in adjustment state, indicates that track circuit is idle；When train occupation, track circuit is branched out, GJ
It falls；If frequency, phase are undesirable, GJ is also fallen, in this way, just there is 25Hz phase-sensitive track circuits phase to identify energy
Power, i.e. phase-sensitive nature have certain interference free performance.
Wherein, protection box HF is connected in series by inductance, capacitor, it is attempted by the railway line of two relays (GJ) of binary
On circle, to inhibit 50Hz interference electric current, the reactive component of 25Hz signal code is compensated, plays reduction track circuit transmission
The effect of attenuation and phase shift.Lightning protection compensator Z mainly carries out lightning protection to the track power supply signal of outdoor entrance；It is attempted by office
Capacitor C is used to improve the power factor of local line's circuit on portion's coil, to reduce the output electric current of frequency converter.
Fig. 2 is computer interlock system and two relay connection schematic diagrams of 25Hz phase-sensitive track circuits binary.Computer
Interlock system includes control and display machine (including M-A and M-B), interlock logic unit (including LS-A and LS-B) and input and output list
First (including IO-A and IO-B).
Corresponding two relays (GJ) of a binary of each track section, all two relay (GJ) installations of binary connect
On mouth frame (DL), one or more track relay interface shelfs (DL) are needed according to station scale.Computer interlock system it is defeated
The contact for entering output unit acquisition two relays of binary obtains the occupancy of outdoor respective rail circuit/go out clear state, thus real
The operation of existing interlock logic.
Following problem is primarily present using 25Hz phase-sensitive track circuits:
1, two relay release factors of binary are lower, and about 50%, it is unfavorable for improving the transmission of 25Hz phase-sensitive track circuits
Performance；Due to its mechanical structure, Yi Fasheng contact card resistance, train injection circuit section track relay cannot can
By falling, great formation accident was once caused, poor anti jamming capability is in-orbit when electric locomotive rising bow, drop bow, acceleration or deceleration
Biggish 50Hz impulse disturbances are generated in road circuit, be may cause relay malfunction, are directly jeopardized traffic safety；
2, volume is big: two relay volumes of single binary are bigger, and a track circuit relay interface frame is 9 layers,
Every layer can only place three binary, two relays, i.e. an interface shelf could support up 27 track sections；
3, construction is complicated: the difference that the track power supply, locally supplied power source, relay of two relays of binary are interlocked to computer
Contact requires to carry out wiring, and wiring quantity is more, and difficulty of construction is big, and is easy error, checks and checks all relatively difficult；
4, without monitoring: two relays of binary can only feed back clear/occupied state out of current respective carter section, work as appearance
When problem, current orbit circuit power, the amplitude of locally supplied power source, frequency, phase difference can not be obtained, can not quickly judge failure original
Cause and debugging influence station conevying efficiency.
Utility model content
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of all-electronin phase-sensitive track circuits mould
Block has the characteristics that highly integrated and small in size.
In order to reach the utility model embodiment purpose, the utility model embodiment provides a kind of all-electronin phase-sensitive track
Circuit module is connected between the interlock logic unit of computer interlock system and protection box, comprising: logic control interconnected
Unit processed and acquisition control unit；
Wherein, the logic control element passes through the behaviour in the interlock logic unit and the computer interlock system
The control instruction output end for making expression machine is connected, the information and rail of the locally supplied power source for being acquired according to the acquisition control unit
The state of track section where the information judgement of road power supply；
The acquisition control unit for acquiring the information of locally supplied power source and the information of track power supply, and is transmitted to described
Logic control element.
Preferably, the logic control element includes: mutually independent multiple channels；
Each channel includes: processor CPU element, DP bus communication interface circuit and cage number/slot Acquisition Circuit；
Wherein, the CPU element respectively with the DP bus communication interface circuit and the cage number/slot Acquisition Circuit phase
Even；The DP bus communication interface circuit is connected with an interlock logic unit of the computer interlock system；The cage number/
Slot Acquisition Circuit is connected with the default machine cage；
CPU element between every two channel is connected by the first optocoupler.
Preferably, the multiple channel is two, respectively first passage and second channel；The first passage and second
Channel forms two and takes two frameworks.
Preferably, the acquisition control unit pass through respectively multiple second optocouplers in corresponding the multiple channel
CPU element is connected.
Preferably, the acquisition control unit includes: the analog/digital A/D conversion circuit and signal condition that multichannel is sequentially connected
Circuit；Further include: the local voltage sensor and railway voltage sensor being connected with each signal conditioning circuit, A/ described in every road
D conversion circuit is connected with second optocoupler.
Preferably, CPU element includes:
Information of voltage Acquisition Circuit, decision circuitry and the memory being sequentially connected.
Preferably, the information and track for the locally supplied power source that the logic control element is acquired according to the acquisition control unit
The state of track section includes: where the information judgement of power supply
Each channel in the multiple channel receives the interlocking by respective DP bus communication interface circuit respectively
The control instruction that logic unit is sent, is successively read the track section stored in the memory of the CPU element
State.
Preferably, the office of the acquisition of information of voltage Acquisition Circuit the local voltage sensor and railway voltage sensor transmissions
The amplitude of portion's voltage and railway voltage, frequency and phase, the decision circuitry is according to the local voltage of acquisition and railway voltage
Amplitude, frequency and phase judge the track section for occupied state or out clear state.
Preferably, first optocoupler realizes the CPU element data interaction and voting in each channel.
The utility model embodiment in conjunction with track relay depth, realizes input and output in computer interlock system
It is all electronic of 25Hz phase-sensitive track circuits acquisition, miniaturization, integrated, intelligent, solve it is above-mentioned using binary two after
Electric appliance realizes the problem of track circuit acquisition.
The other feature and advantage of the utility model embodiment will illustrate in the following description, also, partly from
It becomes apparent in specification, or is understood and implementing the utility model embodiment.The mesh of the utility model embodiment
And other advantages can be achieved and obtained by structure specifically noted in the specification, claims and drawings.
Detailed description of the invention
Attached drawing is used to provide one for further understanding the utility model embodiment technical solution, and constituting specification
Part, is used to explain the technical solution of the utility model embodiment together with embodiments herein, does not constitute practical to this
The limitation of new embodiment technical solution.
Fig. 1 is the 25Hz phase-sensitive track circuits schematic diagram of the prior art；
Fig. 2 is the computer interlock system of the prior art and the connection schematic diagram of two relays of binary；
Fig. 3 is the computer interlock system and all-electronin phase-sensitive track circuits module connection signal of the utility model embodiment
Figure；
Fig. 4 is the all-electronin phase-sensitive track circuits module principle block diagram of the utility model embodiment；
Fig. 5 is the CPU element structural schematic diagram of the utility model embodiment.
Specific embodiment
For the objectives, technical solutions, and advantages of the embodiments of the present invention are more clearly understood, below in conjunction with attached
The embodiments of the present invention are described in detail in figure.It should be noted that in the absence of conflict, the reality in the application
The feature applied in example and embodiment can mutual any combination.
In order to reach the utility model embodiment purpose, the utility model embodiment provides a kind of all-electronin phase-sensitive track
Circuit module 0, as shown in figure 3, all-electronin phase-sensitive track circuits module 0 be connected to computer interlock system (including operation indicate
Machine (including M-A and M-B) and interlock logic unit (including LS-A and LS-B), wherein control and display machine is the chain system of computer
The slave computer of system) interlock logic unit and protection box between, comprising: logic control element 1 interconnected and acquisition control
Unit 2；
Wherein, logic control element 1 passes through the operation table in the interlock logic unit and the computer interlock system
Show that the control instruction output end of machine is connected, for receiving the behaviour in the computer interlock system by the interlock logic unit
The control instruction for making expression machine, the information of the locally supplied power source for being acquired according to the acquisition control unit and the letter of track power supply
The state of track section where breath judgement；
Acquisition control unit 2 for acquiring the information of locally supplied power source and the information of track power supply, and is transmitted to the logic
Control unit 1.
In the utility model embodiment, a kind of all-electronin phase-sensitive track circuits module is proposed, former computer is interlocked
Two relays of binary replace in system, realize obtain the occupancy of outdoor respective rail circuit/go out clear shape on one module
The function of state realizes all electronic, miniaturization, integrated, intelligent of 25Hz phase-sensitive track circuits acquisition, solves above-mentioned
The problem of realizing track circuit acquisition using two relays of binary.
Optionally, logic control element 1 may include: mutually independent multiple channels；
Each channel includes: processor CPU element, DP bus communication interface circuit and cage number/slot Acquisition Circuit；
Wherein, the CPU element respectively with the DP bus communication interface circuit and the cage number/slot Acquisition Circuit phase
Even；The DP bus communication interface circuit is connected with an interlock logic unit of the computer interlock system；The cage number/
Slot Acquisition Circuit is connected with the default machine cage；
CPU element between every two channel is connected by the first optocoupler.
In the utility model embodiment, as shown in figure 4, being said for when multiple channel is two channels below
It is bright.
Optionally, multiple channels are two, respectively first passage 11 (i.e. channel 1) and second channel 12 (i.e. channel 2)；
First passage 11 and second channel 12 form two and take two frameworks.
In the utility model embodiment, first passage 11 and second channel 12 are just the same and symmetrical, meet railway letter
The security requirement of number control system.First passage 11 and second channel 12 are logic control part, wherein first passage 11 wraps
The first CPU111, the first DP bus communication interface circuit 112 and cage No. the first/slot Acquisition Circuit 113 are included, the first CPU111 divides
It is not connected with the first DP bus communication interface circuit 112 and cage No. the first/slot Acquisition Circuit 113；First DP bus communication connects
Mouth circuit 112 is connected with an interlock logic unit (such as interlock logic unit LS-A) for computer interlock system；Cage No. first/
Slot Acquisition Circuit 113 is for receiving cage number/slot 3-1 information.Second channel 12 includes the 2nd CPU121, the 2nd DP bus
Communication interface circuit 122 and cage No. the second/slot Acquisition Circuit 123, the 2nd CPU121 respectively with the 2nd DP bus communication interface
Circuit 122 is connected with cage No. the second/slot Acquisition Circuit 123；2nd DP bus communication interface circuit 122 and computer interlocking system
Another interlock logic unit (such as interlock logic unit LS-B) of system is connected；Cage No. second/slot Acquisition Circuit 123 is for connecing
Receive cage number/slot 3-2 information.
In the utility model embodiment, data are realized by isolation optocoupler, i.e., the first above-mentioned optocoupler 13 in two channels
Interaction and voting.
Optionally, acquisition control unit 2 passes through multiple second optocouplers 14 and the CPU in corresponding the multiple channel respectively
Unit is connected.
In the utility model embodiment, as shown in figure 4, multiple second optocoupler 14 may include the second optocoupler 14-1 and
Second optocoupler 14-2, acquisition control unit 2 is connected by the second optocoupler 14-1 with the first CPU111 of first passage 11, and is passed through
Second optocoupler 14-2 is connected with the 2nd CPU121 of second channel 12.
Optionally, acquisition control unit 2 may include: the analog/digital A/D conversion circuit 261-1 and letter that multichannel is sequentially connected
Number conditioning circuit 261-2；Further include: the local voltage sensor 262 and railway voltage being connected with each signal conditioning circuit pass
Sensor 263, A/D conversion circuit 261-1 described in every road are connected with the second optocoupler 14-1 or 14-2.
Optionally, as shown in figure 5, CPU element 111 or 121 includes:
Information of voltage Acquisition Circuit, decision circuitry and the memory being sequentially connected.
In the utility model embodiment, part that the logic control element 1 is acquired according to the acquisition control unit
The state of track section includes: where the information of power supply and the information judgement of track power supply
Each channel when the computer interlock system needs to obtain the state of track section, in the multiple channel
The control instruction that the interlock logic unit is sent is received by respective DP bus communication interface circuit respectively, it is described every
The CPU element in a channel to the control instruction verification it is errorless after, be successively read in the CPU element memory store it is described
The state of track section.
Optionally, the logic control element 1 acquires 262 He of local voltage sensor by information of voltage Acquisition Circuit
Amplitude, frequency and the phase of local voltage and railway voltage that railway voltage sensor 263 transmits, the decision circuitry is according to adopting
Amplitude, frequency and the phase of the local voltage and railway voltage that integrate judge the track section as occupied state or out clear state；
In the utility model embodiment, CPU element is the core of 25Hz phase-sensitive track circuits module, main to realize
The amplitude of track power supply and locally supplied power source, frequency, phase acquisition, logic judgment and voting report each rail to interlock logic unit
Road section goes out clear/occupied state and collected parameters and module self-operating state；DP bus communication interface electricity
Road is the communication link of module and interlock logic unit, and the two-way DP bus of each module is redundant mode, is patrolled respectively with interlocking
A and the B communication of volume unit, if wherein DP bus failure all the way, in addition DP bus is able to maintain that system can be transported normally all the way
Row improves system reliability.Cage number/slot Acquisition Circuit is the unique address number that module is used to determine itself, because module
Design be it is general, any slot position of track machine cage can be inserted in, then only passing through each slot position on harvester cage bottom plate
Unique identification can determine Self address.
Acquisition control unit 2 is that track-circuit signalling handles part, main to realize that outdoor track circuit and power supply panel provide
The isolation of locally supplied power source's signal, conditioning and A/D conversion.
Acquisition control unit 2 supports the acquisition of two-way locally supplied power source, this is because in larger yard, uplink and downlink pharynx
Larynx area can be using different locally supplied power sources as reference, therefore acquisition control unit 2 is supported the access of two-way locally supplied power source and led to
Data configuration is crossed to determine and use any road locally supplied power source as reference power source.Every road locally supplied power source pass through first voltage transformer into
Row signal isolation avoids module faults itself from influencing locally supplied power source to influence other modules, the output of voltage sensor secondary
Signal is divided into two, and then every road carries out impedance matching and low-pass filtering to signal, subsequently enters 14 high-precision high-speed A/D
The SPI digital interface of conversion circuit, A/D conversion circuit enters two CPU after holding coupling isolation, and cpu access each in this way is equal
Get amplitude, the frequency of two-way locally supplied power source.
The acquisition of track power supply is similar with locally supplied power source's acquisition, and acquisition control unit 2 can support adopting for 6 rail road power supplys
Collection, every rail road power supply are divided into two after first passing around voltage transformer, are then turned after signal condition by A/D conversion circuit
Digital signal is changed into two CPU.
The considerations of all-electronin phase-sensitive track circuits module acquisition control unit 2 25Hz signal acquisition versatility and multiplexing
Property, locally supplied power source is different with the amplitude of track power supply, therefore selects the voltage sensor of different no-load voltage ratios in design, so that voltage
The voltage magnitude of sensor secondary output is identical, therefore single cpu access of rear class totally 8 complete phase of tunnel analog signal conditioning circuit
Together, high-speed a/d conversion uses 8 channel chips, and integrated level is high, and occupancy is small in size, meets module and minimizes highly integrated requirement.
Each cpu access first determines whether collected track supply voltage amplitude and frequency, then judge track power supply and
The phase difference of locally supplied power source determines whether the track section is clear out or occupies, most latter two cpu access table according to above-mentioned condition
Certainly judging result, only there are two CPU to be all judged to out clearly, and setting the section is clear state, and any voting result is inconsistent, all sets this
Section is that occupied state swings to secure side, two CPU by the first and second DP communication interface circuits to interlock logic unit A and
B reports each track section state.
All-electronin 25Hz phase-sensitive track circuits module logic control unit 1, the power supply of acquisition control unit 2 are mutually indepedent,
It ensure that module independence requirement, the power supply of acquisition control unit 2 is mainly local voltage, the power supply of railway voltage Acquisition Circuit.
All-electronin 25Hz phase-sensitive track circuits module compared to the former track circuit for using two relays of binary, mainly just like
Lower advantage:
1, strong antijamming capability: all-electronin 25Hz phase-sensitive track circuits module release factor can reach 85%, and hard
Low-pass filtering design has been all made of in part circuit and software, strong antijamming capability avoids influence of the traction current to rail module,
It ensure that form safety；
2, integrated level is high: small-size voltage transformer and Surface Mount electronic component are used, module height is integrated, and it is small in size, it is single
Module can support the acquisition of six rail road power supplys；
3, construction is simple: module is designed using card insert type, is mounted in special machine cage, without additional wiring, the only company of need
The cable of locally supplied power source's line and module junction chamber outside track power supply is connect, construction period is shortened, reduces wiring error probability,
Greatly improve debugging efficiency；
4, accurate monitoring: module has the acquisition of all parameters of locally supplied power source and track power supply, including each road power supply
Amplitude, frequency, track power supply and local power phase are poor, can draw out Parameters variation curve, the personnel of maintaining easily check respectively
Track circuit working condition adjusts each parameter to optimum Working, and can carry out failure anticipation in advance；
5, easy to maintain: all-electronin 25Hz phase-sensitive track circuits module supports hot plug, if there is module failure, directly
Module is replaced, can be debugged in a short period of time, recovery system operates normally.And module has comprehensively certainly
Diagnostic function, if module faults itself or component failure, module can automatic fault-reporting location information, facilitate the dimension of module
It repairs and diagnoses.
Although embodiment disclosed by the utility model embodiment is as above, the content only this reality for ease of understanding
The embodiment used with novel, is not intended to limit the utility model embodiment.Belonging to any the utility model embodiment
Technical staff in field can be in reality under the premise of not departing from spirit and scope disclosed by the utility model embodiment
Any modification and variation, but the scope of patent protection of the utility model embodiment are carried out in the form and details applied, it still must be with
Subject to the scope of which is defined in the appended claims.
Claims (9)
1. a kind of all-electronin phase-sensitive track circuits module, which is characterized in that the all-electronin phase-sensitive track circuits module is connected to
Between the interlock logic unit and protection box of computer interlock system, comprising: logic control element interconnected and acquisition control
Unit processed；
Wherein, the logic control element passes through the operation table in the interlock logic unit and the computer interlock system
Show that the control instruction output end of machine is connected, information and the track electricity of the locally supplied power source for acquiring according to the acquisition control unit
The state of track section where the information judgement in source；
The acquisition control unit for acquiring the information of locally supplied power source and the information of track power supply, and is transmitted to the logic
Control unit.
2. all-electronin phase-sensitive track circuits module according to claim 1, which is characterized in that the logic control element packet
It includes: mutually independent multiple channels；
Each channel includes: processor CPU element, DP bus communication interface circuit and cage number/slot Acquisition Circuit；
Wherein, the CPU element is connected with the DP bus communication interface circuit and the cage number/slot Acquisition Circuit respectively；
The DP bus communication interface circuit is connected with an interlock logic unit of the computer interlock system；The cage number/slot
Number Acquisition Circuit is connected with default machine cage；
CPU element between every two channel is connected by the first optocoupler.
3. all-electronin phase-sensitive track circuits module according to claim 2, which is characterized in that the multiple channel is two
It is a, respectively first passage and second channel；The first passage and second channel form two and take two frameworks.
4. all-electronin phase-sensitive track circuits module according to claim 2, which is characterized in that the acquisition control unit point
Not Tong Guo multiple second optocouplers and CPU element in corresponding the multiple channel be connected.
5. all-electronin phase-sensitive track circuits module according to claim 4, which is characterized in that the acquisition control unit packet
It includes: the analog/digital conversion circuit and signal conditioning circuit that multichannel is sequentially connected；Further include: it is connected with each signal conditioning circuit
Local voltage sensor and railway voltage sensor, analog/digital conversion circuit described in every road are connected with second optocoupler.
6. all-electronin phase-sensitive track circuits module according to claim 2, which is characterized in that CPU element includes:
Information of voltage Acquisition Circuit, decision circuitry and the memory being sequentially connected.
7. all-electronin phase-sensitive track circuits module according to claim 6, which is characterized in that the logic control element root
According to the state of track section where the information of the locally supplied power source of acquisition control unit acquisition and the information judgement of track power supply
Include:
Each channel in the multiple channel receives the interlock logic by respective DP bus communication interface circuit respectively
The control instruction that unit is sent, is successively read the state of the track section stored in the memory of the CPU element.
8. all-electronin phase-sensitive track circuits module according to claim 7, which is characterized in that the information of voltage acquisition electricity
Road acquires the local voltage of local voltage sensor and railway voltage sensor transmissions and amplitude, frequency and the phase of railway voltage
Position, the decision circuitry judge that the track section is according to the local voltage of acquisition and amplitude, frequency and the phase of railway voltage
Occupied state or out clear state.
9. all-electronin phase-sensitive track circuits module according to claim 6, which is characterized in that first optocoupler is realized
The CPU element data interaction and voting in each channel.
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| CN110641514A (en) * | 2019-10-30 | 2020-01-03 | 河北冀胜轨道科技股份有限公司 | System for solving bad shunting of railway |
| CN111722013A (en) * | 2020-06-24 | 2020-09-29 | 合肥工大高科信息科技股份有限公司 | Method and system for detecting 25hz phase-sensitive track circuit signal |
| CN111751608A (en) * | 2020-06-24 | 2020-10-09 | 合肥工大高科信息科技股份有限公司 | Station phase-sensitive track signal detection device |
| CN112977543A (en) * | 2021-05-10 | 2021-06-18 | 北京全路通信信号研究设计院集团有限公司 | Full electronic computer interlocking method and system based on closed link |
| CN114454919A (en) * | 2022-03-14 | 2022-05-10 | 青迈启迪轨道科技(天津)有限公司 | Computer interlocking system |
| CN116930728A (en) * | 2023-09-18 | 2023-10-24 | 河北德凯铁路信号器材有限公司 | Track circuit testing system, method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110641514A (en) * | 2019-10-30 | 2020-01-03 | 河北冀胜轨道科技股份有限公司 | System for solving bad shunting of railway |
| CN111722013A (en) * | 2020-06-24 | 2020-09-29 | 合肥工大高科信息科技股份有限公司 | Method and system for detecting 25hz phase-sensitive track circuit signal |
| CN111751608A (en) * | 2020-06-24 | 2020-10-09 | 合肥工大高科信息科技股份有限公司 | Station phase-sensitive track signal detection device |
| CN112977543A (en) * | 2021-05-10 | 2021-06-18 | 北京全路通信信号研究设计院集团有限公司 | Full electronic computer interlocking method and system based on closed link |
| CN114454919A (en) * | 2022-03-14 | 2022-05-10 | 青迈启迪轨道科技(天津)有限公司 | Computer interlocking system |
| CN114454919B (en) * | 2022-03-14 | 2024-02-13 | 青迈启迪轨道科技(天津)有限公司 | Computer interlocking system |
| CN116930728A (en) * | 2023-09-18 | 2023-10-24 | 河北德凯铁路信号器材有限公司 | Track circuit testing system, method and device, electronic equipment and storage medium |
| CN116930728B (en) * | 2023-09-18 | 2023-11-24 | 河北德凯铁路信号器材有限公司 | Track circuit testing system, method and device, electronic equipment and storage medium |
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