CN100524995C

CN100524995C - Special intelligent circuit breaker for railway signal

Info

Publication number: CN100524995C
Application number: CNB200710040842XA
Authority: CN
Inventors: 忻兵; 杨先成; 方芝仙; 徐宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-18
Filing date: 2007-05-18
Publication date: 2009-08-05
Anticipated expiration: 2027-05-18
Also published as: CN101075734A

Abstract

This is an intellective breaker for railway signal including a shell, control panel, electric elements and connecting card. The control panel is installed with power light, alarm light, reset button and shut off button. Electric elements include electromagnetic inductive sensor, CPU of control signal input and output, relay of NC point, human-machine communication set composed by power light, alarm light, shut off button and reset button, and working power. The NC point is linked to the main circuit of the electric elements crossing the sensor. In case of overloading, CPU automatically shut off power in different defer time according to sensor signals and alarm, then automatically resume power in defer.

Description

A kind of special intelligent circuit breaker for railway signal

Technical field

The present invention relates to a kind of Protector for electric appliances, belong to electronic apparatus control technology field, particularly a kind of special intelligent circuit breaker for railway signal.

Background technology

In railway signal control system, each station all is provided with numerous cartridge fuses, its effect be should the guard signal system in the normal utilization of each equipment, the safety of in time cutting off circuit, protection equipment when surpassing the electric current permissible value appears disturbing again in circuit.Because in practice, the reason that overcurrent takes place mostly is the overcurrent pulse that various instantaneous interference produce greatly, is that all recover normal and disturb the back signal system that disappears, and need not keep in repair.But the moment fuse that takes place in overcurrent fuses, and under without the situation of upgrading fuse, signalling arrangement can not recover operate as normal, thereby also influences the normal operation of train.In order to solve fault effects and the artificial trouble of upgrading fuse continually that the frequent fracture of wire of fuse is brought, the early 1990s, a kind of the increasing on the basis of original fuse of having come out be provided with spare fuse, so that signal system automatically switches to the multi-functional melt silk device of spare fuse work under the situation of main fuse fusing, effect with instant alleviation influence, but if in case disturbing pulse perdurabgility is long or when being subjected to subsequent interference again and causing spare fuse also to fuse, still have the device interrupt work that causes, cause influencing the normal operation of train and the trouble of fuse must artificial regeneration be set; A kind of circuit breaker that adopts mechanical action mode automatic shutdown circuit has appearred the beginning of this century, effectively exempted the trouble of frequent updating fuse, but owing to do not have the function that circuit is connected in recovery automatically, thus still need the artificial normal operation that cooperates ability restorer work and train, so still owe desirable; Come out in recent years a kind of can automatic shutdown circuit when overcurrent takes place, disturbing the railway signal intelligent switch of again can automatic time delay connecting circuit after disappearing, efficiently solve the trouble of artificial reparation, have significant practicality and economy.But find that in actual applications also there is the not strong a fly in the ointment of work applicability in it, because the railway signals equipment power supply is various in style, operating current has nothing in common with each other, the rated value that can carry overcurrent also has nothing in common with each other, for example, for the overcurrent that only takes place on the equipment about 0.2A at minimum working current, fuse of the prior art, mechanical type circuit breaker or intelligent switch all still do not have the function of cut-out; And, the safe bearing load time that existing different kinds of railways signalling arrangement allows overcurrent neither fixed value, it is relevant with the size of overcurrent value, therefore how should be when overcurrent takes place the safety of guard signal equipment, signalling arrangement is played a role to greatest extent, this just need a kind of can be set the time of delay of different cut-out circuit according to the size to the overcurrent value that takes place on the various device and cut off the back recover automatically to connect circuit time of delay have an intelligent function device; In addition, in view of the importance of railway signals equipment to the normal operation of commander's train, the signal maintenance personnel must follow the tracks of the real-time working state of understanding each equipment at any time, press for the immediately monitoring equipment with human-computer dialogue function, monitor, increase work efficiency so that strengthen.

Summary of the invention

The objective of the invention is to provide a kind of when overcurrent takes place automatically the detection of excessive current value, and can adopt corresponding different delayed time to cut off automatically and automatic restoring circuit work and novel special intelligent circuit breaker for railway signal according to the size of crossing flow valuve with human-computer dialogue function.

Special intelligent circuit breaker for railway signal of the present invention mainly by housing, control panel, electric member, externally connect inserted sheet and form.Control panel is arranged on the leading section of housing, above be provided with yellow power supply indicator, red alarm indicator, control button and cut off control button resets; Electric member is arranged on enclosure interior, is made up of transducer, cpu central processing unit, action executive module, human-computer dialogue assembly and working power.Described transducer be induction, form by magnetic core and shaping circuit, shaping circuit is provided with signal output part, passes through the lead that is provided with primary work loop in the magnetic core medium pore; Cpu central processing unit is provided with signal input end and control signal output ends; The action executive module is mainly filled the post of by the control relay of band normally-closed contact, and control relay is serially connected on the output control terminal of cpu central processing unit, and its normally-closed contact is serially connected in the primary work loop of institute's electrical installation; Include power supply indicator, alarm indicator, cut-out control button on the control panel in the human-computer dialogue assembly, control button resets, alarm indicator is serially connected on the signal output control terminal of cpu central processing unit, cuts off the control button and the control button that resets and is serially connected on the signal input control end of cpu central processing unit.In addition, on cpu central processing unit, also be provided with a control signal output ends that external warning information can be provided.

During work, the lead of primary work loop passes through in the magnetic core hole that is arranged on transducer, when primary work loop generation overcurrent, produce an induced current in the induction coil on the magnetic core, shaping circuit sends an overcurrent signal to the signal input end of cpu central processing unit, so cpu central processing unit sends a delayed control signal correspondingly according to the size of detected signal value to control relay, the work of control relay energized, its normally-closed contact is reversed to normally open, realize cutting off primary work loop, meanwhile, alarm indicator is bright, the alarm output has alarm signal output; After certain time-delay, cpu central processing unit is set output again according to the differentiation of inside and is cut off the control signal of control relay power supply, makes its contact recover normally off, so connect primary work loop again.

Special intelligent circuit breaker for railway signal of the present invention based on above-mentioned design, because current sensor adopts full isolation mode to insert main circuit, be not connected in series into other additional components and parts at main current supply circuit, fall influence so work the time can not produce extra voltage to primary work loop; Employing is passed through method by the magnetic core hole of transducer with the lead of main circuit, and insulation is fully isolated, and helps guaranteeing the safety of primary work loop; Transducer can with instantaneous acquiring to primary work loop in the information of electric current instantaneous variation deliver in the cpu central processing unit, by cpu central processing unit according to the thresholding of a plurality of intelligent decision of inner setting, send command adapted thereto according to the size of overcurrent value, with the power supply that makes different time of delay control relay energized, normally-closed contact disconnect, cut off primary work loop, after certain time of delay, cut off the control relay power supply again and make its closing of contact recover to connect main circuit again.According to the technical standard of railway signals equipment, cpu central processing unit is distinguished the overcurrent of different value and has been designed different time of delay, helps improving to greatest extent under the condition that meets the demands the train conevying efficiency.And after cutting off primary work loop, cpu central processing unit recovers to connect main circuit after certain time-delay, exist if disturb still this moment, cpu central processing unit can repeat 4 times again by designing requirement and send the instruction of cutting off and connecting the control relay working power, if overcurrent disappears, then recover to connect circuit state, system equipment keeps operate as normal, if overcurrent still exists, the load that then shows primary work loop has malfunction to exist, then no longer connect main circuit, recover again after the wait artificial treatment.When the overcurrent cutting-off primary work loop occurring, to concentrate alarm send instruction, control panel on light simultaneously by alarm indicator for cpu central processing unit.Because collection, analysis, judgement, the commander of overcurrent information finished in the mode of information transmission automatically by transducer and cpu central processing unit, therefore no matter be all can use to the little current flow devices of 0.2A or the equipment of 380V three phase mains for a short time.Thereby have very strong work applicability and reliability, be the desirable safety protection device that is worth of widely use in the present railway signal system.

Description of drawings

Fig. 1 is the contour structures schematic diagram of the embodiment of the invention;

Fig. 2 is the electrical structure schematic diagram of the embodiment of the invention.

Among the figure:

1. housing 2. control panels 3. electric members 4. connect inserted sheet 5. and connect inserted sheet

6. connect inserted sheet 7. and connect inserted sheet 8. connection inserted sheets 9. power supply indicators 10. alarm indicators

Control button 12. cuts off control button 13. transducer 14.CPU central processing units 11. reset

15. action executive module 16. human-computer dialogue assemblies 17. working powers 18. magnetic cores

19. shaping circuit 20. control signal output ends 21. major loop leads 22. signal input end

23. signal input end 24. signal input end 25. control signal output ends

26. control signal output ends 27. control signal output ends 28. normally-closed contacts

29. control relay 30 leads 31. leads 32. leads 33. leads

Embodiment

The invention will be further described below in conjunction with accompanying drawing and exemplary embodiments.

In Fig. 1 and Fig. 2, special intelligent circuit breaker for railway signal of the present invention mainly by housing 1, control panel 2, electric member 3, externally connect inserted

sheet

4,5,6,7 and 8 and form.Wherein: control panel 2 is arranged on the leading section of housing 1, above be provided with yellow power supply indicator 9, red alarm indicator 10, control button 11 and cut off control button 12 resets; Externally connect inserted

sheet

4 and 8 for primary work loop between be connected inserted sheet, 5 and 7 for connecting inserted sheet for alarm output with the inserted sheet, 6 that is connected of 17 of 24V working powers; Electric member 3 is arranged on the inside of housing 1, is made up of transducer 13, cpu central processing unit 14, action executive module 15, human-computer dialogue assembly 16 and working power 17.Described transducer 13 be induction, form by magnetic core 18 and shaping circuit 19, shaping circuit 19 is provided with signal output part 20, passes through the lead 21 that is provided with primary work loop in the centre bore of magnetic core 18; Cpu central processing unit 14 is provided with signal input end 22 and control

signal output ends

23,24,25,26 and 27; Action executive module 15 is mainly filled the post of by the control relay 29 of band normally-closed contact 28, and control relay 29 is serially connected on the output control terminal 25 of cpu central processing unit 14, and its normally-closed contact 28 is serially connected in the primary work loop of institute's electrical installation; Include power supply indicator 9 on the control panel 2, alarm indicator 10 in the human-computer dialogue assembly 16, cut off control button 11, control button 12 resets, alarm indicator 10 is serially connected on the signal output control terminal 26 of cpu central processing unit 14, the control button 11 that resets is serially connected on the signal input control end 23 of cpu central processing unit 14, cuts off control button 12 and is serially connected on the signal input control end 24 of cpu central processing unit 14.In addition, on cpu central processing unit 14, also be provided with a control signal output ends 27 that external warning information can be provided; Working power 17 is electrically connected with transducer 13, control relay 29, cpu central processing unit 14 and power supply indicator 9 respectively by

lead

30,31,32 and 33.

During work, the lead 21 of primary work loop passes through in the hole of the magnetic core 18 that is arranged on transducer 13, its faradic output 20 joins with the signal input end 22 of cpu central processing unit 14, and the actuating coil of control relay 29 is serially connected on the output control terminal 25 of cpu central processing unit 14, its normally-closed contact is serially connected on the lead 21 of primary work loop; The length of the time of delay of delayed control signal is relevant with the size of transducer 13 detected overcurrent values, and its mutual corresponding relation is preestablished by the program of cpu central processing unit 14; When primary work loop generation overcurrent, produce an induced current in the induction coil on the magnetic core 18, the signal output part 20 of shaping circuit 19 sends an overcurrent signal to the signal input end 22 of cpu central processing unit 14, so cpu central processing unit 14 sends a delayed control signal correspondingly according to the size of detected signal value to control relay 29, control relay 29 energized work, its normally-closed contact 28 is reversed to normally open, realize cutting off primary work loop, meanwhile, alarm indicator 10 is bright, alarm output 27 has control signal output; After certain time-delay, cpu central processing unit 14 is exported the control signal of cutting off control relay 29 power supplys again according to the differentiation setting of inside again, makes its normally-closed contact 28 recover original states, so connect primary work loop, electric equipment recovery operate as normal.

Claims

1. special intelligent circuit breaker for railway signal by housing (1), control panel (2), electric member (3), externally connect inserted sheet a (4), b (5), c (6), d (7) and e (8) and form, is characterized in that:

A. control panel (2) be arranged on the leading section of housing (1), above be provided with yellow power supply indicator (9), red alarm indicator (10), the control button that resets (11) and cut off control button (12);

B. externally connect inserted sheet a (4) with externally is connected inserted sheet e (8) be with primary work loop between be connected inserted sheet, externally connect inserted sheet b (5) and externally is connected inserted sheet d (7) for 24V working power (17) between be connected inserted sheet, externally connect inserted sheet c (6) and export the connection inserted sheet for alarm;

C. electric member (3) is arranged on the inside of housing (1), wherein include 24V working power (17), the electromagnetic sensor of forming by the shaping circuit (19) that passes through the magnetic core (18) that is provided with primary work loop lead (21) and band signal output (20) in the centre bore (13), be provided with signal input end a (22) above, b (23), and c (24) and control signal output ends a (25), the cpu central processing unit (14) of b (26) and c (27) and be serially connected in action executive module (15) on the control signal output ends a (25) of cpu central processing unit (14), described action executive module (15) is mainly filled the post of by the control relay (29) of band normally-closed contact (28), and described normally-closed contact (28) is serially connected in the primary work loop;

D. primary work loop lead (21) passes through in magnetic core (18) hole that is arranged on described transducer (13), its faradic signal output part (20) joins with the signal input end a (22) of cpu central processing unit (14), the normally-closed contact (28) of control relay (29) is serially connected on the primary work loop lead (21), in when, on the primary work loop overcurrent taking place when, produce an induced current in the induction coil on the magnetic core (18), the signal output part (20) of shaping circuit (19) sends an overcurrent signal to the signal input end a (22) of cpu central processing unit (14), so cpu central processing unit (14) sends correspondingly a delayed control signal through control signal output ends a (25) to control relay (29) according to the size of detected signal value, order about control relay (29) energized work, normally-closed contact (28) is reversed to normally open, realize cutting off primary work loop, meanwhile, control signal output ends b (26) has control signal output, red alarm indicator (10) is bright, control signal output ends c (27) has control signal output, ordering about external alarm shows, again after certain time-delay, cpu central processing unit (14) is exported the control signal of cutting off control relay (29) power supply again according to the program setting of inside, make its normally-closed contact (28) recover original state, so connect primary work loop.

2. special intelligent circuit breaker for railway signal according to claim 1, the length that it is characterized in that described delayed control signal time of delay is relevant with the size of the detected overcurrent value of described transducer (13), and its mutual corresponding relation is preestablished by the program of cpu central processing unit (14).