CN105680410B - A kind of rail transit safety door electromagnetic lock short-circuit protection circuit, method and system - Google Patents
A kind of rail transit safety door electromagnetic lock short-circuit protection circuit, method and system Download PDFInfo
- Publication number
- CN105680410B CN105680410B CN201510906233.2A CN201510906233A CN105680410B CN 105680410 B CN105680410 B CN 105680410B CN 201510906233 A CN201510906233 A CN 201510906233A CN 105680410 B CN105680410 B CN 105680410B
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- CN
- China
- Prior art keywords
- electromagnetic lock
- circuit
- chip microcomputer
- protection circuit
- door controller
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/085—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current making use of a thermal sensor, e.g. thermistor, heated by the excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/046—Signalling the blowing of a fuse
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- Lock And Its Accessories (AREA)
Abstract
The invention discloses a kind of rail transit safety door electromagnetic lock short-circuit protection circuit, including：It is connected with single-chip microcomputer, and is turned on when single-chip microcomputer exports low level signal, the photo-coupler ended when single-chip microcomputer exports high level signal；The first resistor being connected with photo-coupler；The second resistance being connected with first resistor；It is connected with first resistor and second resistance, and is turned on when photo-coupler turns on, the N metal-oxide-semiconductors ended when photo-coupler ends；The diode and resettable fuse being connected with N metal-oxide-semiconductors.Due to adding resettable fuse in the current supply circuit where electromagnetic lock and safe door controller, when there is short circuit phenomenon, resettable fuse will disconnect, then the power supply circuit of safe door controller and electromagnetic lock will disconnect, therefore, safe door controller will not be burned out because electromagnetic lock short circuit phenomenon occurs.In addition, invention additionally discloses a kind of rail transit safety door electromagnetic lock short-circuit protection method and system.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of rail transit safety door electromagnetic lock short-circuit protection electricity
Road, method and system.
Background technology
In track traffic, station platform safety door electromagnetic lock is mounted in outside safe door controller, and two parts are from life
Production installation and debugging are all complete independentlies.Safe door controller directly provides electric energy for electromagnetic lock during metro operation, and
Electromagnetic lock is controlled accordingly, therefore when external electromagnetic lock out existing short-circuit, can be directly by inside safe door controller
The circuit direct short-circuit of electromagnetic lock is supplied, so as to cause burning for safe door controller internal components.
As can be seen here, when short circuit phenomenon occurs for electromagnetic lock, how to prevent that safe door controller from burning is art technology
Personnel's urgent problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of rail transit safety door electromagnetic lock short-circuit protection circuit, for being sent out when electromagnetic lock
During raw short circuit phenomenon, how to prevent safe door controller from burning.In addition, the present invention also provides a kind of rail transit safety door electromagnetism
Lock short-circuit protection method and system.
In order to solve the above technical problems, the present invention provides a kind of rail transit safety door electromagnetic lock short-circuit protection circuit, bag
Include：
It is connected with single-chip microcomputer, and is turned on when the single-chip microcomputer exports low level signal, is exported in the single-chip microcomputer high
The photo-coupler ended during level signal；
The first resistor being connected with the photo-coupler；
The second resistance being connected with the first resistor；
It is connected with the first resistor and the second resistance, and is turned on when the photo-coupler turns on, described
The N-MOS pipes that photo-coupler ends when ending；
The diode and resettable fuse being connected with the N-MOS pipes；
Wherein, the second end of the source electrode of the N-MOS pipes and the second resistance be grounded, the grid of the N-MOS pipes with
Second end of the first resistor connects with the first end of the second resistance, drain electrode and the diode of the N-MOS pipes
Anode connected with the electronic lock negative power end of safe door controller, the negative electrode of the diode and the resettable fuse
First end connects with the electronic lock positive power source terminal of the safe door controller, the second end and the peace of the resettable fuse
The power end connection of air cock controller.
Preferably, in addition to：
The voltage-regulator diode in parallel with the second resistance.
Preferably, the voltage of the resettable fuse is 220V；Holding electric current is 0.33A；It is 0.74A to interrupt electric current；
It is 20A that maximum, which interrupts electric current,.
Preferably, the model LVR033S of the resettable fuse.
Preferably, the voltage of the power end of the safe door controller is 110V.
A kind of rail transit safety door electromagnetic lock short-circuit protection method, including：
When the electromagnetic lock, which is in locking state and single-chip microcomputer, sends high level signal, safe door controller is when default
Between at least detect once the state of the electromagnetic lock when reaching；
If testing result is the locking state, stop providing electric energy to the electromagnetic lock.
Preferably, the number of detection is 2 times, and the time interval detected twice is 2s.
Preferably, the preset time is 200ms.
Preferably, it is described stop to the electromagnetic lock provide electric energy after also include：The safe door controller is sent
Alarm signal.
A kind of rail transit safety door electromagnetic lock short circuit protection system, including described protection circuit, with the protection electricity
The single-chip microcomputer and electromagnetic lock of road connection and the safe door controller being connected with the electromagnetic lock.
Rail transit safety door electromagnetic lock short-circuit protection circuit provided by the present invention, in electromagnetic lock and safe door controller
Resettable fuse is added in the current supply circuit at place, when there is short circuit phenomenon, resettable fuse will disconnect, then safety
The power supply circuit of door controller and electromagnetic lock will disconnect, and therefore, it is existing that safe door controller short circuit will not occur because of electromagnetic lock
As and be burned out.
Brief description of the drawings
In order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used in embodiment will be done simply below
Introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill people
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of circuit diagram of rail transit safety door electromagnetic lock short-circuit protection circuit provided by the invention；
Fig. 2 is a kind of flow chart of rail transit safety door electromagnetic lock short-circuit protection method provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, for those of ordinary skill in the art under the premise of creative work is not made, what is obtained is every other
Embodiment, belong to the scope of the present invention.
The core of the present invention is to provide a kind of rail transit safety door electromagnetic lock short-circuit protection circuit, method and system.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Embodiment one
Fig. 1 is a kind of circuit diagram of rail transit safety door electromagnetic lock short-circuit protection circuit provided by the invention.Such as Fig. 1 institutes
Show, rail transit safety door electromagnetic lock short-circuit protection circuit, including：
It is connected with single-chip microcomputer 10, and is turned on when single-chip microcomputer 10 exports low level signal, high electricity is exported in single-chip microcomputer 10
The photo-coupler 11 ended during ordinary mail；
The first resistor R1 being connected with photo-coupler 11；
The second resistance R2 being connected with first resistor R1；
It is connected with first resistor R1 and second resistance R2, and is turned on when photo-coupler 11 turns on, in photo-coupler 11
The N-MOS pipes 12 ended during cut-off；
The diode 13 and resettable fuse 14 being connected with N-MOS pipes 12；
Wherein, the source electrode of N-MOS pipes 12 and second resistance R2 the second end are grounded, the grid of N-MOS pipes 12 and the first electricity
Resistance R1 the second end connects with second resistance R2 first end, the drain electrode of N-MOS pipes 12 and the anode and safety door of diode 13
The electronic lock negative power end connection of controller 15, the negative electrode of diode 13 gate with the first end of resettable fuse 14 and safety
The electronic lock positive power source terminal connection of device 15 processed, the second end of resettable fuse 14 and the power end of safe door controller 15 connect
Connect.
It is coil component that electromagnetic lock 16, which includes two parts part, and another part is Sensor section, coiler part function
It is that coil is picked up electromagnetic lock lock pillar, kinetic energy disappears by magnetic induction effect when safe door controller controls and provides kinetic energy
When, put down lock pillar.Sensor is the working condition of induced electricity magnetic padlock lock pillar, is to be in released state in locking state.
Under normal circumstances, if the input low level signal of single-chip microcomputer 10, photo-coupler 11 turn on, while N-MOS is managed
12 also can accordingly turn on, then loop of the electromagnetic lock 16 just where energy turns on, and the coil of electromagnetic lock will by magnetic induction effect
Electromagnetic lock lock pillar picks up, in locking state.If short circuit phenomenon occurs in electromagnetic lock, resettable fuse 14 will disconnect,
Then connecting the loop of the power supply of electromagnetic lock 16 and safe door controller 15 will be disconnected, and therefore, safe door controller 15 is just not
Occur and burn phenomenon.Because resettable fuse 14 has self-recovering function, therefore, when short trouble eliminates, then from extensive
Double insurance silk 14 continues to keep work.
The rail transit safety door electromagnetic lock short-circuit protection circuit that the present embodiment provides, in electromagnetic lock and safe door controller
Resettable fuse is added in the current supply circuit at place, when there is short circuit phenomenon, resettable fuse will disconnect, then safety
The power supply circuit of door controller and electromagnetic lock will disconnect, and therefore, it is existing that safe door controller short circuit will not occur because of electromagnetic lock
As and be burned out.
Wherein, protection circuit, in addition to：
The voltage-regulator diode in parallel with second resistance R2.
Wherein, the voltage of resettable fuse is 220V；Holding electric current is 0.33A；It is 0.74A to interrupt electric current；Maximum is beaten
Power-off stream is 20A.
In specific implementation, the parameter of resettable fuse can be selected, for example, the electricity of resettable fuse can be selected
It is 0.33A to press as 220V, holding electric current, and it is 0.74A to interrupt electric current, and it is 20A that maximum, which interrupts electric current,.It should be noted that above-mentioned ginseng
Number is only a kind of specific application scenarios, and it can only be a kind of this embodiment not represent.
Wherein, the model LVR033S of resettable fuse.
Wherein, the voltage of the power end of the safe door controller is 110V.
Embodiment two
Fig. 2 is a kind of flow chart of rail transit safety door electromagnetic lock short-circuit protection method provided by the invention.Need
Bright is protection circuit of this method described in based on embodiment one.Rail transit safety door electromagnetic lock short-circuit protection method includes：
S10：When electromagnetic lock, which is in locking state and single-chip microcomputer, sends high level signal, safe door controller is when default
Between at least detect the state of an electromagnetic lock when reaching.
When short circuit phenomenon appears in electromagnetic lock and is changed into released state from locking state, therefore, when electromagnetic lock is in locking shape
When state and single-chip microcomputer send high level signal, safe door controller by the sensor in electromagnetic lock obtain the state of electromagnetic lock with
Realize detection.Under normal circumstances, if single-chip microcomputer sends high level signal, photo-coupler is in cut-off state, N-MOS pipes
Cut-off state is also at, electromagnetic lock will be changed into released state from locking state.If there is short circuit phenomenon, then electromagnetic lock is with regard to nothing
Method is changed into released state from locking state.
S11：If testing result is locking state, stop providing electric energy to electromagnetic lock.
If testing result shows that electromagnetic lock remains as locking state, illustrate to break down, then stop providing electricity to electromagnetism
Energy.
Rail transit safety door electromagnetic lock short-circuit protection method provided by the invention, in the protection circuit described in embodiment one
On the basis of, the state of electromagnetic lock is detected, if electromagnetic lock is under locking state and single-chip microcomputer input high level signal, it is impossible to by
Locking state is changed into released state, illustrates that electromagnetic lock breaks down.When testing result is locking state, stop carrying to electromagnetic lock
Power supply energy, it can thus be avoided if when failure caused by short circuit occurs in electromagnetic lock, safe door controller is also burnt
The problem of ruining.
Wherein, the number of detection is 2 times, and the time interval detected twice is 2s.
Wherein, preset time 200ms.
Due in detection process, it is possible that the situation of erroneous judgement, continuous in the present embodiment in order to avoid such case
Twice, the time interval of detection is 2s for detection.If testing result is locking state twice, it is correct to illustrate testing result
, then stop providing electric energy to electromagnetic lock.Because the lock pillar of electromagnetic lock needs the regular hour by picking up to put down, therefore when single
Piece machine needs to wait regular hour, i.e. preset time, then detect after have sent high level signal.When being preset in the present embodiment
Between be 200ms.
Wherein, also include after stopping providing electric energy to electromagnetic lock：Safe door controller sends alarm signal.
Embodiment three
Rail transit safety door electromagnetic lock short circuit protection system, including the protection circuit described in embodiment one, with protection electricity
The single-chip microcomputer and electromagnetic lock of road connection and the safe door controller being connected with electromagnetic lock.
Due to the operation principle of protection circuit being described in detail in embodiment one, therefore, the present embodiment is retouched
The explanation for referring to embodiment one is stated, wouldn't be repeated here.
Rail transit safety door electromagnetic lock short-circuit protection circuit provided by the present invention, method and system are carried out above
It is discussed in detail.Each embodiment is described by the way of progressive in specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention,
Some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the protection domain of the claims in the present invention
It is interior.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, the composition and step of each example are generally described according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specialty
Technical staff can realize described function using distinct methods to each specific application, but this realization should not
Think beyond the scope of this invention.
Directly it can be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Claims (10)
- A kind of 1. rail transit safety door electromagnetic lock short-circuit protection circuit, it is characterised in that including：It is connected with single-chip microcomputer, and is turned on when the single-chip microcomputer exports low level signal, high level is exported in the single-chip microcomputer The photo-coupler ended during signal；The first resistor being connected with the photo-coupler；The second resistance being connected with the first resistor；It is connected with the first resistor and the second resistance, and is turned on when the photo-coupler turns on, in the optocoupler The N-MOS pipes that clutch is ended when ending；The diode and resettable fuse being connected with the N-MOS pipes；Wherein, the second end of the source electrode of the N-MOS pipes and the second resistance be grounded, the grid of the N-MOS pipes with it is described Second end of first resistor connects with the first end of the second resistance, the first end of the first resistor and the photo-coupler Connection, the drain electrode of the N-MOS pipes are connected with the anode of the diode and the electronic lock negative power end of safe door controller, institute The negative electrode of diode is stated with the electronic lock positive power source terminal of the first end of the resettable fuse and the safe door controller to connect Connect, the second end of the resettable fuse is connected with the power end of the safe door controller.
- 2. protection circuit according to claim 1, it is characterised in that also include：The voltage-regulator diode in parallel with the second resistance.
- 3. protection circuit according to claim 1, it is characterised in that the voltage of the resettable fuse is 220V；Protect It is 0.33A to hold electric current；It is 0.74A to interrupt electric current；It is 20A that maximum, which interrupts electric current,.
- 4. according to the protection circuit described in claims 1 to 3 any one, it is characterised in that the type of the resettable fuse Number it is LVR033S.
- 5. protection circuit according to claim 1, it is characterised in that the voltage of the power end of the safe door controller is 110V。
- A kind of 6. rail transit safety door electromagnetic lock short-circuit protection method, based on the protection described in claim 1-5 any one Circuit, it is characterised in that including：When the electromagnetic lock is in locking state and single-chip microcomputer sends high level signal, safe door controller arrives in preset time Up to when at least detect once the state of the electromagnetic lock；If testing result is the locking state, stop providing electric energy to the electromagnetic lock.
- 7. guard method according to claim 6, it is characterised in that the number of detection is 2 times, between the time detected twice It is divided into 2s.
- 8. guard method according to claim 6, it is characterised in that the preset time is 200ms.
- 9. guard method according to claim 6, it is characterised in that it is described stop to the electromagnetic lock provide electric energy it Also include afterwards：The safe door controller sends alarm signal.
- 10. a kind of rail transit safety door electromagnetic lock short circuit protection system, it is characterised in that any one including claim 1 to 5 Protection circuit described in, the single-chip microcomputer and electromagnetic lock being connected with the protection circuit and the peace being connected with the electromagnetic lock Air cock controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906233.2A CN105680410B (en) | 2015-12-08 | 2015-12-08 | A kind of rail transit safety door electromagnetic lock short-circuit protection circuit, method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906233.2A CN105680410B (en) | 2015-12-08 | 2015-12-08 | A kind of rail transit safety door electromagnetic lock short-circuit protection circuit, method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105680410A CN105680410A (en) | 2016-06-15 |
| CN105680410B true CN105680410B (en) | 2018-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510906233.2A Active CN105680410B (en) | 2015-12-08 | 2015-12-08 | A kind of rail transit safety door electromagnetic lock short-circuit protection circuit, method and system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244168B (en) * | 2019-07-16 | 2021-05-25 | 青岛海信商用显示股份有限公司 | Electric control lock fault detection system and detection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3523547A1 (en) * | 1985-07-02 | 1987-01-15 | Swf Auto Electric Gmbh | Actuating device, especially for door locking in the case of motor vehicles |
| JP2004297997A (en) * | 2003-02-12 | 2004-10-21 | Japan Control Engineering Co Ltd | Safety controller |
| CN201464858U (en) * | 2009-04-29 | 2010-05-12 | 重庆川仪自动化股份有限公司 | Central controller of a safety door |
| CN101886513A (en) * | 2009-05-11 | 2010-11-17 | 重庆桓浩科技发展有限公司 | Intelligent security door system |
| CN205429688U (en) * | 2015-12-08 | 2016-08-03 | 重庆川仪自动化股份有限公司 | Track traffic safety door electromagnetic lock short -circuit protection circuit and system |
-
2015
- 2015-12-08 CN CN201510906233.2A patent/CN105680410B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3523547A1 (en) * | 1985-07-02 | 1987-01-15 | Swf Auto Electric Gmbh | Actuating device, especially for door locking in the case of motor vehicles |
| JP2004297997A (en) * | 2003-02-12 | 2004-10-21 | Japan Control Engineering Co Ltd | Safety controller |
| CN201464858U (en) * | 2009-04-29 | 2010-05-12 | 重庆川仪自动化股份有限公司 | Central controller of a safety door |
| CN101886513A (en) * | 2009-05-11 | 2010-11-17 | 重庆桓浩科技发展有限公司 | Intelligent security door system |
| CN205429688U (en) * | 2015-12-08 | 2016-08-03 | 重庆川仪自动化股份有限公司 | Track traffic safety door electromagnetic lock short -circuit protection circuit and system |
Non-Patent Citations (1)
| Title |
|---|
| 轨道交通站台安全门系统中的安全保护措施;黄中全;《城市轨道交通研究》;20101231;第72-74页 * |
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| CN105680410A (en) | 2016-06-15 |
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