CN205809272U - A kind of railway filament conversion testing circuit - Google Patents
A kind of railway filament conversion testing circuit Download PDFInfo
- Publication number
- CN205809272U CN205809272U CN201620763983.9U CN201620763983U CN205809272U CN 205809272 U CN205809272 U CN 205809272U CN 201620763983 U CN201620763983 U CN 201620763983U CN 205809272 U CN205809272 U CN 205809272U
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Abstract
This utility model provides a kind of railway filament conversion testing circuit, described railway filament conversion testing circuit includes the filament change-over circuit being sequentially connected, single chip machine controlling circuit and interrupts counting circuit, described filament change-over circuit includes data buffering chip and the main filament controlling brancher being connected with described data buffering chip and auxiliary filament controlling brancher, and described interruption counting circuit includes hysteresis comparator chip and alarm interface.A kind of railway filament conversion testing circuit that this utility model provides, it is possible to test out the performance of filament switching exactly.
Description
Technical field
This utility model relates to urban rail transit technology field, particularly relates to a kind of railway filament conversion testing circuit.
Background technology
Railway signal lamp is the important outdoor equipment of railway signal, and its reliability is directly connected to the safety of railway operation
And efficiency, in order to ensure safety and reliability, signal lamp is designed to double filamentray structure, comprises main filament and auxiliary filament.
Under normal circumstances, signal lights lights main filament, and in the case of main filament fracture of wire, auxiliary filament is lighted.In order to ensure filament
Reliable conversion, in daily maintenance work, in addition to testing voltage, also needs to carry out filament conversion online
Test.
Due to semaphore mechanism relative closure, signal lamp working environment rather harsh, field condition is unfavorable for signal
Bulb is tested.It addition, the signal lamp in signaling gear, the especially bulb of red light lamp position are in the state lighted for a long time
Under, so on-line testing can not test out the quality of filament handoff functionality exactly, can not test out filament performance is
No decline.
Utility model content
The purpose of this utility model is to provide a kind of railway filament conversion testing circuit, it is possible to test out filament exactly
The performance of switching.
For achieving the above object, this utility model provides a kind of railway filament conversion testing circuit, described railway filament
Conversion testing circuit includes the filament change-over circuit being sequentially connected, single chip machine controlling circuit and interrupts counting circuit, wherein: institute
State the data buffering chip that filament change-over circuit includes that model is 74HC244 and the king light being connected with described data buffering chip
Silk controlling brancher and auxiliary filament controlling brancher, described main filament controlling brancher includes that the first driving audion and the first two point continue
Electrical equipment, described auxiliary filament controlling brancher includes the second driving audion and the second two point relay, and described first two point continues
Electrical equipment control the first contact and the second contact, described second two point Control the 3rd contact and the 4th contact, described
One drives audion and described second to drive base stage the drawing by current-limiting resistance and described data buffering chip respectively of audion
Foot 12 is connected with pin 14 correspondence, and described first drives the colelctor electrode of audion and one end phase of described first two point relay
Even, the other end of described first two point relay is connected with one end of described 4th contact, the other end of described 4th contact
Being connected with DC source, described second drives the colelctor electrode of audion to be connected with one end of described second two point relay, institute
One end of the other end and described second contact of stating the second two point relay is connected, and the other end of described second contact is with described
DC source is connected, and the two ends of described first contact are connected with main filament, and the two ends of described 3rd contact are connected with auxiliary filament, institute
State the pin 6 of data buffering chip, pin 8 and pin 11 to be connected with described single chip machine controlling circuit；Described interruption counts electricity
Road includes hysteresis comparator chip and the alarm interface that model is 74HC14, and the port of described alarm interface 1 is by by the
The low-pass filter circuit that five resistance and the first electric capacity are constituted is connected with the pin 1 of described hysteresis comparator chip, described sluggish ratio
The pin 1 of relatively device chip is connected with the DC voltage that magnitude of voltage is 5V also by the 4th pull-up resistor, described hysteresis comparator core
The pin 14 of sheet is connected with the DC voltage that described magnitude of voltage is 5V, pin 12 and the described monolithic of described hysteresis comparator chip
Machine control circuit is connected.
Further, the pin 2 of described data buffering chip, pin 4, pin 13, pin 15, pin 17, pin 10 with
And the equal ground connection of pin 19, the pin 20 of described data buffering chip is connected with the DC voltage that magnitude of voltage is 5V, and described data are delayed
Rush the pin 1 of chip and pin 9 phase short circuit and described pin 1 and pin 9 by the first pull-up resistor with described magnitude of voltage is
The DC voltage of 5V is connected.
Further, the pin 2 of described hysteresis comparator chip and pin 3 phase short circuit, described hysteresis comparator chip
Pin 4 and pin 5 phase short circuit, the pin 8 of described hysteresis comparator chip and pin 11 phase short circuit, described hysteresis comparator chip
Pin 10 and pin 13 phase short circuit, the pin 6 of described hysteresis comparator chip and pin 9 phase short circuit, described hysteresis comparator
Pin 7 ground connection of chip.
Further, described railway filament conversion testing circuit also includes the LCD being connected with described single chip machine controlling circuit
Display screen.
A kind of railway filament conversion testing circuit that this utility model provides, is turned to filament by single chip machine controlling circuit
Change circuit and assign control instruction, and receive the relevant to filament conversion of interruption counting circuit collection by single chip machine controlling circuit
Level skip signal, thus add up filament conversion number of times.In described filament change-over circuit, two two point relays are respectively
The contact controlled is connected in the circuit of the other side's relay, and the power supply of two point relay is by the other side's relay
Contact provides, thus ensures that the same time only has one in main filament or auxiliary filament can be lit, and is prevented from
External interference and the mistake driving logic brought due to front stage circuits fault.Whenever filament is changed once, described interruption counts electricity
Road just can produce a level skip signal, such that it is able to unite after this level skip signal is received by single chip machine controlling circuit
The number of times of meter filament conversion.Therefore, a kind of railway filament conversion testing circuit that this utility model provides, it is possible to exactly
Test out the performance of filament switching.
Accompanying drawing explanation
The structural representation of the railway filament conversion testing circuit that Fig. 1 provides for this utility model；
Fig. 2 is the circuit diagram of filament change-over circuit in this utility model；
Fig. 3 is the circuit diagram interrupting counting circuit in this utility model.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, real below in conjunction with the application
Execute the accompanying drawing in mode, the technical scheme in the application embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of embodiment of the application rather than whole embodiments.Based on the embodiment party in the application
Formula, other embodiments all that those of ordinary skill in the art are obtained under not making creative work premise, all answer
When the scope belonging to the application protection.
The structural representation of the railway filament conversion testing circuit that Fig. 1 provides for this utility model.Fig. 2 is this utility model
The circuit diagram of middle filament change-over circuit.Fig. 3 is the circuit diagram interrupting counting circuit in this utility model.Refer to figure
1 to Fig. 3, described railway filament conversion testing circuit includes filament change-over circuit 100, the single chip machine controlling circuit being sequentially connected
200 and interrupt counting circuit 300, wherein:
Described filament change-over circuit 100 includes data buffering chip U1 that model is 74HC244 and delays with described data
Rushing main filament controlling brancher and auxiliary filament controlling brancher that chip U1 is connected, described main filament controlling brancher includes the first driving three
Pole pipe Q1 and the first two point relay R ELAY1, described auxiliary filament controlling brancher includes the second driving audion Q2 and second pair
Contact relay RELAY2, described first two point relay R ELAY1 controls the first contact K1-1 and the second contact K1-2, institute
State second two point relay R ELAY2 control the 3rd contact K2-1 and the 4th contact K2-2, described first drive audion Q1 and
Described second drives the base stage of audion Q2 respectively by the pin 12 of current-limiting resistance R2 and R3 and described data buffering chip U1
Being connected with pin 14 correspondence, described first drives the colelctor electrode of audion Q1 and the one of described first two point relay R ELAY1
End is connected, and the other end of described first two point relay R ELAY1 is connected with one end of described 4th contact K2-2, and described the
The other end of four contact K2-2 is connected with the DC source that voltage is 12V, and described second drives colelctor electrode and the institute of audion Q2
The one end stating the second two point relay R ELAY2 is connected, the other end of described second two point relay R ELAY2 and described the
One end of two point K1-2 is connected, and the other end of described second contact K1-2 is connected with the DC source that described voltage is 12V, institute
The two ends stating the first contact K1-1 are connected with main filament, and the two ends of described 3rd contact K2-1 are connected with auxiliary filament, described data
The pin 6 of buffer chip U1, pin 8 and pin 11 are connected with described single chip machine controlling circuit.Additionally, described data buffering core
The pin 2 of sheet U1, pin 4, pin 13, pin 15, pin 17, pin 10 and the equal ground connection of pin 19, described data buffering core
The pin 20 of sheet U1 is connected with the DC voltage that magnitude of voltage is 5V, the pin 1 of described data buffering chip U1 and pin 9 phase short circuit
And described pin 1 is connected with the DC voltage that described magnitude of voltage is 5V by the first pull-up resistor R1 with pin 9.
In the present embodiment, described data buffering chip U1 includes two groups of buffers, the position choosing of first group of buffer
Foot is pin 19, and the position of second group of buffer selects foot to be pin 1.In the present embodiment, pin 19 can represent first with ground connection
Group buffer is i.e. chosen for powering on.Pin 1 can be connected with the DC voltage that magnitude of voltage is 5V by the first pull-up resistor R1, and
And pin 1 can also be connected with the first via output pin pin 9 of first group of buffer, can be controlled by the level of pin 9
Foot is selected in the position of two buffers, thus prevents static interference.The pin 2 of described data buffering chip, pin 4, pin 13, pin
15, pin 17 army need not, unified ground connection.The pin 6 of described data buffering chip, pin 8 and pin 11 draw for signal input
Foot, can be connected with single chip machine controlling circuit, thus receives the control signal that described single chip machine controlling circuit is sent.Described data
The pin 12 of buffer chip and pin 14 can be signal output pin, can drive audion Q1 and institute with described first respectively
The base stage stating the second driving audion Q2 is connected.
In the present embodiment, if the first two point relay R ELAY1 and the second two point relay R ELAY2 control
Contact picked up simultaneously, then major-minor filament will be lit simultaneously.In order to avoid this situation occurs, can be by first pair
It is right that the second contact K1-2 of contact relay RELAY1 and the 4th contact K2-2 of the second two point relay R ELAY2 accesses
In the coil circuit of side's relay, the power supply of each two point relay simultaneously is provided by the contact of the other side's relay.So,
When certain two point relay makes contact be picked up, the power supply circuits of another two point relay will be disconnected, from
And ensure that the same time only has one in main filament or auxiliary filament can be lit, and be prevented from external interference and by
The mistake brought in front stage circuits fault drives logic.Contact K1-1 and K2-1 of relay main filament and auxiliary filament phase respectively
Connect, thus control the break-make of railway bulb major-minor filament current supply circuit.
Described interruption counting circuit includes hysteresis comparator chip U2 and the alarm interface J2 that model is 74HC14, described
The port 1 of alarm interface J2 is by the low-pass filter circuit being made up of the 5th resistance R5 and the first electric capacity C1 and described sluggish ratio
The pin 1 of relatively device chip U2 is connected, and the pin 1 of described hysteresis comparator chip U2 is also by the 4th pull-up resistor R4 and magnitude of voltage
DC voltage for 5V is connected, the pin 14 of described hysteresis comparator chip U2 and the DC voltage phase that described magnitude of voltage is 5V
Even, the pin 12 of described hysteresis comparator chip U2 is connected with described single chip machine controlling circuit.Described hysteresis comparator chip U2
Pin 2 and pin 3 phase short circuit, the pin 4 of described hysteresis comparator chip U2 and pin 5 phase short circuit, described hysteresis comparator
The pin 8 of chip U2 and pin 11 phase short circuit, the pin 10 of described hysteresis comparator chip U2 and pin 13 phase short circuit, described late
The pin 6 of stagnant comparator chip U2 and pin 9 phase short circuit, pin 7 ground connection of described hysteresis comparator chip U2.
In the present embodiment, when major-minor filament completes once to change, the contact of alarm circuit just closes once, from
And by alarm interface output level skip signal.This level skip signal is filtered by the low pass filter being made up of R5 and C1
After high-frequency noise, the pin 1 of described hysteresis comparator chip U2 can be inputted, carry out through described hysteresis comparator chip U2
After eliminating the process of shake, level skip signal can input single chip machine controlling circuit, thus is added up by single chip machine controlling circuit
The number of times of major-minor filament conversion.
In the present embodiment, described railway filament conversion testing circuit also includes and described single chip machine controlling circuit 200
The LCD display 400 being connected, for showing the test result that filament is changed.
A kind of railway filament conversion testing circuit that this utility model provides, is turned to filament by single chip machine controlling circuit
Change circuit and assign control instruction, and receive the relevant to filament conversion of interruption counting circuit collection by single chip machine controlling circuit
Level skip signal, thus add up filament conversion number of times.In described filament change-over circuit, two two point relays are respectively
The contact controlled is connected in the circuit of the other side's relay, and the power supply of two point relay is by the other side's relay
Contact provides, thus ensures that the same time only has one in main filament or auxiliary filament can be lit, and is prevented from
External interference and the mistake driving logic brought due to front stage circuits fault.Whenever filament is changed once, described interruption counts electricity
Road just can produce a level skip signal, such that it is able to unite after this level skip signal is received by single chip machine controlling circuit
The number of times of meter filament conversion.Therefore, a kind of railway filament conversion testing circuit that this utility model provides, it is possible to exactly
Test out the performance of filament switching.
Above the describing of various embodiments of the application is supplied to those skilled in the art with the purpose described.It is not
It is intended to exhaustive or is not intended to be limited to this utility model single disclosed embodiment.As it has been described above, the application
Various replacements and change will be apparent from for above-mentioned technology one of ordinary skill in the art.Therefore, although had
Body discusses the embodiment of some alternatives, but other embodiment will be apparent from, or those skilled in the art
Relatively easily draw.The application is intended to be included in these of the present utility model all replacements discussed, amendment and change,
And other embodiment in the spirit and scope of above-mentioned application that falls.
Each embodiment in this specification all uses the mode gone forward one by one to describe, identical similar between each embodiment
Part see mutually, what each embodiment stressed is the difference with other embodiments.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application has many deformation
With change without deviating from spirit herein, it is desirable to appended claim includes that these deformation and change are without deviating from the application
Spirit.
Claims (4)
1. a railway filament conversion testing circuit, it is characterised in that described railway filament conversion testing circuit includes phase successively
Filament change-over circuit even, single chip machine controlling circuit and interruption counting circuit, wherein:
Described filament change-over circuit includes data buffering chip that model is 74HC244 and is connected with described data buffering chip
Main filament controlling brancher and auxiliary filament controlling brancher, described main filament controlling brancher includes the first driving audion and first pair
Contact relay, described auxiliary filament controlling brancher includes the second driving audion and the second two point relay, described first pair
Contact relay controls the first contact and the second contact, described second two point Control the 3rd contact and the 4th contact,
Described first drives audion and described second to drive the base stage of audion respectively by current-limiting resistance and described data buffering core
The pin 12 of sheet is connected with pin 14 correspondence, and described first drives the colelctor electrode of audion and described first two point relay
One end is connected, and the other end of described first two point relay is connected with one end of described 4th contact, described 4th contact
The other end is connected with DC source, and described second drives the colelctor electrode of audion and one end phase of described second two point relay
Even, the other end of described second two point relay is connected with one end of described second contact, the other end of described second contact
Being connected with described DC source, the two ends of described first contact are connected with main filament, the two ends of described 3rd contact and auxiliary filament
Being connected, the pin 6 of described data buffering chip, pin 8 and pin 11 are connected with described single chip machine controlling circuit；
Described interruption counting circuit includes hysteresis comparator chip and the alarm interface that model is 74HC14, and described alarm connects
The port 1 of mouth is by the low-pass filter circuit being made up of the 5th resistance and the first electric capacity and the pin of described hysteresis comparator chip
1 is connected, and the pin 1 of described hysteresis comparator chip is connected with the DC voltage that magnitude of voltage is 5V also by the 4th pull-up resistor,
The pin 14 of described hysteresis comparator chip is connected with the DC voltage that described magnitude of voltage is 5V, described hysteresis comparator chip
Pin 12 is connected with described single chip machine controlling circuit.
Railway filament conversion testing circuit the most according to claim 1, it is characterised in that drawing of described data buffering chip
Foot 2, pin 4, pin 13, pin 15, pin 17, pin 10 and the equal ground connection of pin 19, the pin of described data buffering chip
20 are connected with the DC voltage that magnitude of voltage is 5V, the pin 1 of described data buffering chip and pin 9 phase short circuit and described pin
1 is connected with the DC voltage that described magnitude of voltage is 5V by the first pull-up resistor with pin 9.
Railway filament conversion testing circuit the most according to claim 1, it is characterised in that described hysteresis comparator chip
Pin 2 and pin 3 phase short circuit, the pin 4 of described hysteresis comparator chip and pin 5 phase short circuit, described hysteresis comparator chip
Pin 8 and pin 11 phase short circuit, the pin 10 of described hysteresis comparator chip and pin 13 phase short circuit, described hysteresis comparator
The pin 6 of chip and pin 9 phase short circuit, pin 7 ground connection of described hysteresis comparator chip.
Railway filament conversion testing circuit the most according to claim 1, it is characterised in that described railway filament conversion testing
Circuit also includes the LCD display being connected with described single chip machine controlling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620763983.9U CN205809272U (en) | 2016-07-19 | 2016-07-19 | A kind of railway filament conversion testing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620763983.9U CN205809272U (en) | 2016-07-19 | 2016-07-19 | A kind of railway filament conversion testing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205809272U true CN205809272U (en) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620763983.9U Expired - Fee Related CN205809272U (en) | 2016-07-19 | 2016-07-19 | A kind of railway filament conversion testing circuit |
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| Country | Link |
|---|---|
| CN (1) | CN205809272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106507569A (en) * | 2016-12-29 | 2017-03-15 | 北京交通大学 | The secondary utilization controller of fluorescent tube |
-
2016
- 2016-07-19 CN CN201620763983.9U patent/CN205809272U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106507569A (en) * | 2016-12-29 | 2017-03-15 | 北京交通大学 | The secondary utilization controller of fluorescent tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20170719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |