CN104794953A - Track circuit cab signal teaching experiment system and method - Google Patents
Track circuit cab signal teaching experiment system and method Download PDFInfo
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- CN104794953A CN104794953A CN201510245622.5A CN201510245622A CN104794953A CN 104794953 A CN104794953 A CN 104794953A CN 201510245622 A CN201510245622 A CN 201510245622A CN 104794953 A CN104794953 A CN 104794953A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
- G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
- G09B9/04—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of land vehicles
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Abstract
The invention provides a track circuit cab signal teaching experiment system and a method. The teaching experiment system comprises an experiment computer, a data acquisition card, a cab signal lamp control circuit, a switching element and a cab signal lamp; the experiment computer is connected with the data acquisition card; the digital output end of the data acquisition card is connected with the cab signal lamp control circuit, the switching element and the cab signal lamp sequentially in order to simulate actual operation of track circuit-cab signal. By utilizing the teaching experiment system, the teaching and researching of track circuit-cab signal correlation technique can be carried out with lower cost, the operational ability of students are improved, the understanding of students on the track circuit and track signal are reinforced; by utilizing the equipment and method which are provided by the invention, a real cab signal host is not required, a real steel rail is not required, therefore the costs of teaching a track circuit, a structure and a principle of cab signal and signal processing technology are reduced.
Description
Technical field
The present invention relates to teaching experiment system, particularly a kind of track circuit-cab signal teaching experiment system and method.
Background technology
In recent years, along with the enforcement of China railways Leap-forward Development Strategy, railway construction enters a unprecedented high-speed developing period.Constantly raise speed along with train, the safety problem of train high-speed cruising is more and more paid attention to.To ensure traffic safety, improve conevying efficiency and improve cab signal one of key equipment becoming guarantee driving safety that driver lookout condition is target, it also carries larger more crucial task.
Take railway as the school relied on, need to allow student be familiar with practical work environment, and then turn out the novelty and practical personnel that adapt to the high ferro epoch.The teaching of current track circuit-cab signal system mainly adopts entity teaching aid.Due to the true rail of reality and cab signal main frame involve great expense, bulky, therefore common form of teaching takes student to Railway Site empathic learning; Because the actual Railway Site carrying out imparting knowledge to students has strict transportation safety to require and technological system is very complicated usually, the mode of learning watched cannot make student's starting to put into practice and really participate in the work such as actual signal of communication process by oneself, the course of work between the understanding track circuit that student therefore cannot be allowed in teaching efficiency vivid and cab signal and status, cause the effect greatly reducing experimental teaching.How to make student and related personnel grasp the technology of this more complicated fast, just become the new problem in teaching research field.
Summary of the invention
The object of this invention is to provide a kind of teaching experiment system and method for the track circuit-cab signal based on virtual instrument, this teaching experiment system is that a set of robotization, real time implementation and intelligentized data occur and acquisition analysis system, simulate the real transmission of middle orbit circuit signal and the course of work of on-board cab signal system, for education experiment provides platform.
A kind of track circuit-cab signal teaching experiment system, comprises experimental calculation machine, data collecting card, cab signal lamp control circuit, on-off element, signal light for locomotive;
Described experimental calculation machine comprises education experiment unit, and described education experiment unit can comprise signal generating module, signals collecting/demodulation module, signal light for locomotive point lamp module; Described experimental calculation machine is connected with data collecting card, in order to send instruction to data collecting card, and collects and processes the information transmitted by data collecting card; Described signal generating module in order to modulation signal and by modulation after signal send; Described signals collecting/demodulation module collection signal also will issue signal light for locomotive point lamp module after described collection signal demodulation;
Described data collecting card comprises signal output part, signal input part, digital output end;
The digital output end of described data collecting card is connected successively with cab signal lamp control circuit, on-off element, signal light for locomotive; The signal light for locomotive point lamp module of described education experiment unit is by cab signal lamp control circuit described in described data acquisition card control, and described cab signal lamp control circuit controls described signal light for locomotive by cut-offfing of gauge tap element.
In addition, the signal output part of described data collecting card directly can be connected by wire with signal input part.
In addition, power amplifier can also be comprised, signal cable, cab signal coil; The signal output part of described data collecting card is connected with power amplifier, described power amplifier is connected with signal cable, described signal cable sends track-circuit signalling in order to simulate actual track circuit, and the signal input part of described data collecting card is connected with cab signal coil; Described cab signal coil is by the track-circuit signalling on the mode induced signal cable of electromagnetic coupled.
Preferably, can also comprise display device, described experimental calculation machine is connected with display device; Described education experiment unit also comprises signal waveform display module, in order to signal waveform to be shown on the display device.
Preferably, described signal light for locomotive can be two-sided eight displaing lamps.
Be applied to a teaching and experiment method for above-mentioned a kind of track circuit-cab signal teaching experiment system, can comprise:
Step S10: experimental calculation machine locomotive in service signalling procedure, produces signal: the signal of generation is sent by data collecting card signal output part;
Step S20: data collecting card collection signal;
Step S30: experimental calculation machine carries out demodulation to described collection signal, obtains demodulating information; And do corresponding output according to demodulating information, control locomotive Signalized control circuit and light corresponding signal light for locomotive by on-off element.
Be applied to a teaching and experiment method for above-mentioned a kind of track circuit-cab signal teaching experiment system, can comprise:
Step S10: experimental calculation machine locomotive in service signalling procedure, produces signal: the signal of generation is sent by data collecting card signal output part, after power amplifier, is loaded into signal cable; The intensity of conditioning signal is carried out by the enlargement factor of regulating power amplifier;
Step S20: cab signal coil senses the track-circuit signalling on signal cable by the mode of electromagnetic coupled, data collecting card gathers the voltage at cab signal coil two ends as collection signal, the proportional relation of signal on described collection signal and signal cable;
Step S30: experimental calculation machine carries out demodulation to described collection signal, obtains demodulating information; And do corresponding output according to demodulating information, control locomotive Signalized control circuit and light corresponding signal light for locomotive by on-off element.
Preferably, waveform can be worked out by user oneself, then export in feeding system; Or the data of waveform are preserved;
And/or can flash demo be carried out, complete the emulation to three displays or four aspect automatic block track circuit.
Preferably, also comprise: step S11: select at least one noise signal to be added in normal signal, sent by the output terminal of data collecting card.
Preferably, " experimental calculation machine carries out demodulation to described collection signal, obtains demodulating information " of above-mentioned steps S30, described in be demodulated into non-coherent demodulation; The described demodulating information obtained is carrier frequency and/or low-frequency information.
The invention has the beneficial effects as follows, the utilization of virtual instrument makes this cover system have more dirigibility and extendability.Described teaching experiment system makes relevant unit can carry out teaching and the research of track circuit-cab signal correlation technique with lower cost, improve the manipulative ability of student, strengthen the understanding of student to track circuit and track signal, use apparatus and method for provided by the invention, real cab signal main frame can not be purchased, do not set up real rail, thus reduce the instruction cost of professor's student track circuit, the structure of cab signal, principle and signal processing technology.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of the track circuit-cab signal teaching experiment system of one embodiment of the invention.
Fig. 2 is the structural representation of the track circuit-cab signal teaching experiment system of one embodiment of the invention.
Fig. 3 is the structural representation of the track circuit-cab signal teaching experiment system of one embodiment of the invention.
Embodiment
For solving deficiency of the prior art, the invention provides multiple embodiment, specific as follows:
Embodiment 1:
A kind of track circuit-cab signal teaching experiment system, as shown in Figure 1, comprises experimental calculation machine, data collecting card, cab signal lamp control circuit, on-off element, signal light for locomotive.
Described experimental calculation machine comprises education experiment unit.Education experiment unit of the present invention both can be software also can be hardware board (lower same), and described education experiment unit comprises signal generating module, signals collecting/demodulation module, signal light for locomotive point lamp module.
Described signal generating module in order to modulation signal and by modulation after signal send.As a specific embodiment of the present invention, the generation track circuit fsk signal that the signal generating module control data capture card of described education experiment unit is real-time, when the standard of signal is ZPW-2000, fsk signal Frequency is 10.3Hz, 11.4Hz, 12.5Hz, 13.6Hz, 14.7Hz, 15.8Hz, 16.9Hz, 18.0Hz, 19.1Hz, 20.2Hz, 21.3Hz, 23.5Hz, 24.6Hz, 26.8Hz, 29.0Hz etc., and carrier frequency is 1700Hz, 2000Hz, 2300Hz, 2600Hz.When signaling mode is domestic frequency-shift signaling, fsk signal Frequency is 8.5Hz, 9.5Hz, 11Hz, 12.5Hz, 13.5Hz, 15Hz, 16.5Hz, 17.5Hz, 18.5Hz, 20Hz, 21.5Hz, 23.5Hz, 24.5Hz, 26Hz, and carrier frequency is 550Hz, 650Hz, 750Hz, 850Hz.When signaling mode is ac counting, signal is the 25Hz sinusoidal signal of interval.Described signal generating module, can arrange noise overlaying function, Gaussian noise, 50Hz and the situation such as harmonic components, parastic modulation that may encounter in simulation reality.
Described signals collecting/demodulation module collection signal also will issue signal light for locomotive point lamp module after described collection signal demodulation.Described signals collecting/demodulation module, can set the acquisition time and sample frequency that need, and data collecting card adopts the difference mode of connection to gather the time-domain signal of corresponding time.Utilize non-coherent demodulation method to analyze this signal spectrum, and calculate carrier frequency, the low-frequency information in track-circuit signalling.
It (can be such as by the draw-in groove of direct for data collecting card loading test computing machine that described experimental calculation machine is connected with data collecting card, be connected with experimental calculation machine by pci bus), in order to send instruction to data collecting card, and collect and process the information transmitted by data collecting card.Described data collecting card comprises signal output part, signal input part, digital output end.The data collecting card used at present can be connected with terminal box usually, provides signal output part, signal input part, digital output end by terminal box, in this case can using the accessory of terminal box as data collecting card; Meanwhile, adopt and self have signal output part, signal input part, the technical scheme of the data collecting card of digital output end is also within protection scope of the present invention.
The digital output end of described data collecting card is connected successively with cab signal lamp control circuit, on-off element, signal light for locomotive.Wherein, on-off element can be pilot relay; also can be other various on-off element realizing switching function, such as light-operated switch, electro-magnet switch etc., therefore the on-off element understood of those skilled in the art for the solution of the present invention all within protection scope of the present invention.As the embodiment of embodiment 1, two-sided eight displaing lamps conventional in railway can be used as signal light for locomotive, so that the actual service condition on teaching efficiency and railway is more close, in this case, pilot relay can be selected as on-off element (identical with current mode on railway), and the flicker that nine pilot relays control eight display lamps and display lamp is respectively set.The signal light for locomotive point lamp module of described education experiment unit is by cab signal lamp control circuit described in described data acquisition card control, and described cab signal lamp control circuit controls described signal light for locomotive by cut-offfing of gauge tap element (the present embodiment employing pilot relay).As the embodiment of the present embodiment, the low-frequency information that the signal light for locomotive point lamp module of described education experiment unit can obtain according to demodulation, utilizes the digital output end of data collecting card to control the display of two-sided eight display signal light for locomotives respectively.
In embodiment 1, described track circuit-cab signal teaching experiment system can also comprise power amplifier, signal cable, cab signal coil.The signal output part of described data collecting card is connected with power amplifier, and described power amplifier is connected with signal cable, and described signal cable sends track-circuit signalling in order to simulate actual track circuit.Generally for protection power amplifier, need to connect protective resistance on power amplifier; Also can select the power amplifier of suitable parameters thus omit protective resistance.The signal input part of described data collecting card is connected with cab signal coil.Described cab signal coil is by the track-circuit signalling on the mode induced signal cable of electromagnetic coupled.
Described signal light for locomotive can also be connected with 50V D.C. regulated power supply usually, thus obtains electric energy.
As the improvement to the present embodiment, described track circuit-cab signal the teaching experiment system of the present embodiment can also comprise display device (such as display, oscillograph etc.) in order to be shown on the display device by waveform, and described experimental calculation machine is connected with display device (as shown in Figure 3).In this case, described education experiment unit also comprises signal waveform display module, in order to signal waveform to be shown on the display device.The cab signal of original loading can be seen by signal waveform display module and display device, also can be whether correct by the output of the waveform checking signal light for locomotive of display device, obtain better teaching efficiency.The signal waveform display module of described education experiment unit can be shown the waveform of each low frequency signal, fsk signal, can stretch in the axial direction or compress, so that clearer observation signal waveform.
Above-mentioned experiment teaching system can the structurally more cab signal of the closing to reality principle that produces, transmit, when neighbourhood noise is little, and can the practical work process of artificial track circuit-cab signal.
As the improvement to the present embodiment, the described track circuit-cab signal teaching experiment system of the present embodiment can also comprise waveform display/preservation module.Wherein, waveform display/preservation module can read the wave file be stored in experimental calculation machine, exports from data collecting card signal output part, by the waveform display window observation on display device.The waveform that the signal input part of data collecting card can also be collected is kept in experimental calculation machine in digital form.
As the improvement to the present embodiment, the education experiment unit of the described track circuit-cab signal teaching experiment system of the present embodiment can also comprise flash demo module, described flash demo module, three aspect automatic block, four aspect automatic block course of work Show Me animation can be provided, and suspend arbitrarily in viewing process/open.
The present embodiment also discloses the teaching and experiment method of the track circuit-cab signal teaching experiment system for embodiment 1, comprises the steps:
Step S10: experimental calculation machine (also comprising the education experiment unit of its inside) locomotive in service signalling procedure, produce the signal of certain frequency: the signal of generation is sent by data collecting card signal output part, after power amplifier, be loaded into signal cable; The intensity of conditioning signal is carried out by the enlargement factor of regulating power amplifier;
Step S20: cab signal coil senses the track-circuit signalling on signal cable by the mode of electromagnetic coupled, data collecting card gathers the voltage at cab signal coil two ends as collection signal, the proportional relation of signal on described collection signal and signal cable;
Step S30: experimental calculation machine carries out demodulation (such as non-coherent demodulation can certainly adopt coherent demodulation) to described collection signal, obtains demodulating information (in non-coherent demodulation situation, what obtain is low frequency and carrier frequency information); And do corresponding output according to demodulating information (such as low-frequency information), control locomotive Signalized control circuit and light corresponding signal light for locomotive by on-off element (such as pilot relay).
As the improvement to the present embodiment, can also comprise the steps:
Step S40: described teaching experiment system can work out waveform by user oneself, then exports in feeding system; Also the data of waveform can be preserved, be user-friendly to; And/or step S50: carry out flash demo with described teaching experiment system, complete the emulation to three displays or four aspect automatic block track circuit.
As the improvement to the present embodiment, can also comprise the steps:
Step S11: select at least one noise signal to be added in normal signal, sent by the output terminal of data collecting card.In order to demonstrate the impact of noise for cab signal to student.
Embodiment 2
Track circuit-cab signal the teaching experiment system of the embodiment of the present invention 2, as shown in Figure 2, the difference of itself and embodiment 1 is, the signal output part of described data collecting card is directly connected by wire with signal input part, but not above-mentioned use power amplifier, signal cable, by the electromagnetic coupled transporting rail circuit signal of cab signal coil.By the direct connection of wire, avoid the adverse effect that neighbourhood noise produces electromagnetic coupled, student can be allowed under the electromagnetic field environment of complexity still to see clear cab signal accurately, be beneficial to student and see signal ideally, be beneficial to data collecting card to signal light for locomotive signal transmission accurately simultaneously, the experimental teaching object of expection can be reached.
For above-mentioned various distortion and the improvement project of embodiment 1, be all applicable to embodiment 2, repeat no more herein.
The present embodiment also discloses the teaching and experiment method of the track circuit-cab signal teaching experiment system for embodiment 2, comprises the steps:
Step S10: experimental calculation machine locomotive in service signalling procedure, produces signal: the signal of generation is sent by data collecting card signal output part;
Step S20: data collecting card collection signal;
Step S30: experimental calculation machine carries out demodulation (such as non-coherent demodulation) to described collection signal, obtains demodulation (such as low frequency and carrier frequency) information; And do corresponding output according to demodulating information, control locomotive Signalized control circuit and light corresponding signal light for locomotive by on-off element.
For above-mentioned various distortion and the improvement project of the teaching and experiment method of embodiment 1, be all applicable to embodiment 2, repeat no more herein.
By these technical schemes; the present invention is used to can be used for railway universities and colleges or research and development unit; carry out track circuit-cab signal emulation experiment, by operation, observe cab signal waveform and lighting situation under each frequency, understand ultimate principle and the course of work of train-ground communication.
Beneficial effect of the present invention: the present invention simulates the real transmission of middle orbit circuit signal and the course of work of on-board cab signal system, to annotate its application in Train Control field, for education experiment provides platform.The utilization of virtual instrument, simplifies experimental implementation, object teaching of being more convenient for and the connection between theory and practice.The present invention uses virtual instrument to carry out the input of a large amount of instrument and equipment of experimental center saving, simultaneously with animation intuitively, transfers the learning interest of learner, significant for raising laboratory teaching quality.
Use virtual instrument to carry out the input that experimental center not only can save a large amount of instrument and equipment, and renewal speed is fast, thus quality and the efficiency of teaching and scientific research can be improved to a great extent.Experiment teaching system based on virtual technology has many-sided advantage: 1) friendly interface, easy to use; 2) powerful.Signal occurs, and analyzes, process, and the functions such as storage all can realize; 3) experimental system is safeguarded simple, and expanded function is convenient.Use software to instead of traditional instrument and equipment, security of system is reliable, and greatly reduces system cost, at the instrument for also not needing obsolete equipments during device upgrade, only need do simple software upgrading.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process exchange; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. track circuit-cab signal teaching experiment system, comprises experimental calculation machine, data collecting card, cab signal lamp control circuit, on-off element, signal light for locomotive;
Described experimental calculation machine comprises education experiment unit, and described education experiment unit comprises signal generating module, signals collecting/demodulation module, signal light for locomotive point lamp module; Described experimental calculation machine is connected with data collecting card, in order to send instruction to data collecting card, and collects and processes the information transmitted by data collecting card; Described signal generating module in order to modulation signal and by modulation after signal send; Described signals collecting/demodulation module collection signal also will issue signal light for locomotive point lamp module after described collection signal demodulation;
Described data collecting card comprises signal output part, signal input part, digital output end;
The digital output end of described data collecting card is connected successively with cab signal lamp control circuit, on-off element, signal light for locomotive; The signal light for locomotive point lamp module of described education experiment unit is by cab signal lamp control circuit described in described data acquisition card control, and described cab signal lamp control circuit controls described signal light for locomotive by cut-offfing of gauge tap element.
2. track circuit according to claim 1-cab signal teaching experiment system, is characterized in that, the signal output part of described data collecting card is directly connected by wire with signal input part.
3. track circuit according to claim 1-cab signal teaching experiment system, is characterized in that, also comprise power amplifier, signal cable, cab signal coil;
The signal output part of described data collecting card is connected with power amplifier, and described power amplifier is connected with signal cable, and described signal cable sends track-circuit signalling in order to simulate actual track circuit,
The signal input part of described data collecting card is connected with cab signal coil; Described cab signal coil is by the track-circuit signalling on the mode induced signal cable of electromagnetic coupled.
4. according to the track circuit one of claims 1 to 3 Suo Shu-cab signal teaching experiment system, it is characterized in that, also comprise display device, described experimental calculation machine is connected with display device;
Described education experiment unit also comprises signal waveform display module, in order to signal waveform to be shown on the display device.
5. according to the track circuit one of Claims 1-4 Suo Shu-cab signal teaching experiment system, it is characterized in that, described signal light for locomotive is two-sided eight displaing lamps.
6. be applied to a teaching and experiment method for track circuit according to claim 2-cab signal teaching experiment system, comprise:
Step S10: experimental calculation machine locomotive in service signalling procedure, produces signal: the signal of generation is sent by data collecting card signal output part;
Step S20: data collecting card collection signal;
Step S30: experimental calculation machine carries out demodulation to described collection signal, obtains demodulating information; And do corresponding output according to demodulating information, control locomotive Signalized control circuit and light corresponding signal light for locomotive by on-off element.
7. be applied to a teaching and experiment method for track circuit according to claim 3-cab signal teaching experiment system, comprise:
Step S10: experimental calculation machine locomotive in service signalling procedure, produces signal: the signal of generation is sent by data collecting card signal output part, after power amplifier, is loaded into signal cable; The intensity of conditioning signal is carried out by the enlargement factor of regulating power amplifier;
Step S20: cab signal coil senses the track-circuit signalling on signal cable by the mode of electromagnetic coupled, data collecting card gathers the voltage at cab signal coil two ends as collection signal, the proportional relation of signal on described collection signal and signal cable;
Step S30: experimental calculation machine carries out demodulation to described collection signal, obtains demodulating information; And do corresponding output according to demodulating information, control locomotive Signalized control circuit and light corresponding signal light for locomotive by on-off element.
8. the teaching and experiment method according to claim 6 or 7, is characterized in that, works out waveform, then export in feeding system by user oneself; Or the data of waveform are preserved; And/or carry out flash demo, complete the emulation to three displays or four aspect automatic block track circuit.
9. the teaching and experiment method according to claim 6 or 7, is characterized in that, also comprises:
Step S11: select at least one noise signal to be added in normal signal, sent by the output terminal of data collecting card.
10. the teaching and experiment method according to claim 6 or 7, is characterized in that, " experimental calculation machine carries out demodulation to described collection signal, obtains demodulating information " of step S30, described in be demodulated into non-coherent demodulation; The described demodulating information obtained is carrier frequency and/or low-frequency information.
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