CN104244542B - Vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit - Google Patents
Vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit Download PDFInfo
- Publication number
- CN104244542B CN104244542B CN201310254229.3A CN201310254229A CN104244542B CN 104244542 B CN104244542 B CN 104244542B CN 201310254229 A CN201310254229 A CN 201310254229A CN 104244542 B CN104244542 B CN 104244542B
- Authority
- CN
- China
- Prior art keywords
- circuit
- controlling device
- signal
- light adjusting
- time base
- Prior art date
- 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.)
- Expired - Fee Related
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A kind of vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit, can automatic detection have the soft and hardware fault that cannot automatically reply in vcehicular tunnel LED illumination light adjusting and controlling device, and provide corresponding signal output.It is characterized in that a port of single-chip microcomputer (1) is connected with one end of DC isolation circuit (2), the other end of DC isolation circuit (2) is connected with one end of signal rectifier circuit (3), one end that the other end of signal rectifier circuit (3) clamps down on circuit (4) with upper electricity level is connected, the other end that upper electricity level clamps down on circuit (4) is connected with one end of time base circuit 555 (5), and the other end of time base circuit 555 (5) is connected with one end of signal output apparatus (6).When light adjusting and controlling device occurs the fault that cannot be automatically replied, lighting brightness can be forced to be adjusted to maximum by it, to guarantee vcehicular tunnel traffic safety.
Description
Technical field
The present invention relates to a kind of vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit, it can be automatic
The soft and hardware fault that cannot be automatically replied in vcehicular tunnel LED illumination light adjusting and controlling device is detected, and corresponding signal is provided
Output.
Background technology
At present, vcehicular tunnel LED illumination intelligent dimming control device (hereinafter referred to as light adjusting and controlling device) Yi highway
Tunnel illumination field is applied more and more.With the popularization of vcehicular tunnel intelligent lighting, it is to highway tunnel illumination
Field energy-saving, extend light fixture service life, the cable that saves lighting investment etc. will produce great impact.Generally, adjust
When there is software fault in light control device, can be by watchdog circuit by system reset, program counter restarts work.Such as
Number of patent application 200910194241.3 discloses a more advanced watchdog circuit；It can adjust feeding-dog signal when
Between be spaced, flexible configuration watchdog circuit.And for example patent No. CN02122897.3 discloses the integrated circuit bolt on a kind of chip
Lock phenomenon (latchup) protection circuit；It is mainly used in eliminating the occurrent bolt-lock phenomenon of circuit using microprocessor, really
Insurance system occurs to return to normal operating conditions in time during bolt-lock.But the deficiency of these inventions is to be only capable of eliminating systems soft ware
Program bolt-lock in running, can not eliminate the out-of-control phenomenon produced by system hardware fault.To safety requirements very
In high highway tunnel illumination system, light adjusting and controlling device only has watchdog circuit to eliminate partial fault be far from being enough.
For example run into power cut-off, failure welding, system is struck by lightning or other unfavorable factors cause part component damage, circuit therefore
Barrier etc. so that control device cannot normal work when, foregoing invention will be ineffective；This not only results in communicating interrupt, more main
Wanted is the lighting brightness in tunnel to be caused out of control or maintain a relatively low level, jeopardizes traffic safety.Therefore,
The fault detect response circuit of light adjusting and controlling device is set up, to highway tunnel illumination in the case of light adjusting and controlling device breaks down
Light fixture carries out mandatory light modulation, exports tunnel illumination light fixture full power, this reliability to guaranteeing whole dimming control system
And security, have very important significance.In highway tunnel illumination, due to impact of the illuminator to tunnel traffic safety
Greatly, therefore when light adjusting and controlling device is designed, it is necessary to ensure that when which occurs software or the hardware fault that can not automatically reply, be
Must not unite and lamp brightness is closed, be used for eliminating the reinforcement lighting of " black-hole effect " especially for daytime.In light modulation control
Under plant failure state processed, any closing or dimming lamp brightness maintain relatively low luminance level and are likely to cause hand over
Interpreter's event；It is, therefore, necessary to guarantee that light adjusting and controlling device occurs still control lighting during the fault that cannot be automatically replied
Brightness be in maximum brightness state i.e. full power state.Although this control program is when light adjusting and controlling device breaks down,
It is significantly increased can the energy consumption of illuminator, but it may be ensured that traffic safety；Section can be recovered after light adjusting and controlling device is repaired
The pattern with an automatic light meter of energy.The analog signal dimming lamp of commercial type mainly has the LED tunnel lamp that DC0-5V is dimmed at present,
The full power output that wherein 0V signal voltage corresponds to light fixture is high-high brightness, and 5V signal voltage corresponds to the minimum power (volume of light fixture
Determine the 10% of power) output, this is required to be considered for the specific safety in this closing space of vcehicular tunnel.In highway
When tunnel light adjusting and controlling device occurs the fault of no signal output, the power of this LED tunnel lamp that reversely can be dimmed can be automatically
Rise to maximum so that brightness will not be maintained reduced levels because of light controller fault by road surface brightness, so that it is guaranteed that
Traffic safety.But if light adjusting and controlling device its output signal voltage when breaking down is not 0V, but random simulation
Signal voltage is close to the analog signal voltage of 5V, then in tunnel, the brightness of light fixture will be drifted about or be maintained compared with low-light level
Level, this can still jeopardize traffic safety.Therefore, the fault mode that the present invention is likely to occur for light adjusting and controlling device so as to
Under any malfunction that cannot be automatically replied, the LED tunnel lamp brightness with reverse dimming function can be all made to rise to maximum,
Ensure that the security of illuminator and the traffic safety in tunnel.
Content of the invention
When vcehicular tunnel LED illumination light adjusting and controlling device breaks down, in order to prevent controlled light fixture to be in compared with low-light level shape
State and cause traffic accident, the invention provides a kind of vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit,
When there is the fault that cannot be automatically replied in light adjusting and controlling device, the exportable a certain level signal of the circuit, go to notify correlation to set
Standby or force to be adjusted to by the LED tunnel lamp with inverse analog dimming function most bright so as to which that full power is exported, so that it is guaranteed that highway
The traffic safety in tunnel.
To achieve these goals, technical scheme below present invention employs：The a port of single-chip microcomputer (1) and direct current every
One end from circuit (2) is connected, and the other end of DC isolation circuit (2) is connected with one end of signal rectifier circuit (3), letter
One end that the other end of number rectification circuit (3) clamps down on circuit (4) with upper electricity level is connected, and upper electricity level clamps down on circuit (4)
The other end is connected with one end of time base circuit 555 (5), the other end of time base circuit 555 (5) and signal output apparatus (6)
One end is connected.During normal work, single-chip microcomputer (1) constantly can send pulse signal to DC isolation circuit (2)；The signal warp
Signal rectifier circuit (3) is sent to after DC isolation circuit.When single-chip microcomputer (1) hinders for some reason and can not send pulse signal, no matter
Now port is high level or low level or high-impedance state, DC isolation circuit (2) all no signal output, and therefore signal is whole
The output voltage of current circuit (3) declines, and the output voltage that upper electricity level clamps down on circuit (4) also declines therewith；When voltage is down to one
During definite value, the state change of time base circuit 555 (5), high level output is switched to by low level output, so as to control signal output electricity
Road (6) exports a certain level signal, goes to notify relevant device or forces to adjust by the LED tunnel lamp with inverse analog dimming function
Light so as to which full power is exported.
The beneficial effects of the utility model are, when control system occurs software or the hardware circuit fault that cannot automatically reply
When, circuit can export corresponding low level signal and go to control light fixture so as to work in full power state；Also exportable corresponding letter
Number go to inform relevant device.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the circuit theory diagrams of the present invention；
Fig. 2 is the circuit diagram of the embodiment of the present invention.
1. single-chip microcomputer of in figure, 2. DC isolation circuit, 3. signal rectifier circuit, 4. goes up electric level and clamps down on circuit, base when 5.
Circuit 555,6. signal output apparatus.
Specific embodiment
In FIG, a port of single-chip microcomputer (1) is connected with one end of DC isolation circuit (2), DC isolation circuit
(2) the other end is connected with the one end of signal rectifier circuit (3), and the other end of signal rectifier circuit (3) is clamped with upper electricity level
The one end of circuit (4) processed is connected, and the other end that upper electricity level clamps down on circuit (4) is connected with one end of time base circuit 555 (5)
Connect, the other end of time base circuit 555 (5) is connected with one end of signal output apparatus (6).
During normal work, single-chip microcomputer (1) constantly can send pulse signal to DC isolation circuit (2)；The signal is through straight
Signal rectifier circuit (3) is sent to after stream isolation circuit.When single-chip microcomputer (1) hinders for some reason and can not send pulse signal, no matter this
When port be high level or low level or high-impedance state, DC isolation circuit (2) all no signal output, therefore signal rectification
The output voltage of circuit (3) declines, and the output voltage that upper electricity level clamps down on circuit (4) also declines therewith；When voltage is down to necessarily
During value, the state change of time base circuit 555 (5), high level output is switched to by low level output, so as to control signal output circuit
(6) a certain level signal is exported, goes to notify relevant device or the LED tunnel lamp with simulation dimming function is forced light modulation, make
Its full power output.
In fig. 2, a port P15 of single-chip microcomputer (1) is connected with one end of DC isolation circuit (2), DC-isolation
The other end of circuit (2) is connected with one end of signal rectifier circuit (3), and the other end of signal rectifier circuit (3) and upper electricity are electric
One end of flat pliers circuit (4) is connected, and upper electricity level clamps down on the other end of circuit (4) and one end phase of time base circuit 555 (5)
Connection, the other end of time base circuit 555 (5) are connected with one end of signal output apparatus (6).Wherein single-chip microcomputer (1) by CPU and
Its peripheral circuit composition, DC isolation circuit (2) are made up of electric capacity C1, and signal rectifier circuit (3) is by diode D1, D2 and resistance
R1, R2 constitute, and upper electricity level is clamped down on circuit (4) and is made up of resistance R3 and electric capacity C2, and time base circuit 555 (5) is by 555 time base circuits
Constitute with resistance R4, signal output apparatus (6) are made up of diode D3, resistance R5, R6, R7, R8, triode Q1, Q2.In circuit
No matter which kind of fault single-chip microcomputer (1) occurs, including power failure, all pulse can not be provided to DC isolation circuit, thus can lead
The 2 pin triggering terminal voltage of time base circuit 555 is caused to decline.When 2 pin voltages of time base circuit 555 are down to 1/3Vcc, time base circuit
555 (5) invert, the 3 pin output high level of time base circuit 555, Q1, Q2 of driving signal output circuit (6) so as to export
Signal shorted to earth；Due to current vcehicular tunnel, some have the LED tunnel lamp of simulation dimming function to prevent control device
When generation power failure no signal is exported, reduced levels are down in brightness, thus 0V control voltage are corresponded to light fixture most during design
Big brightness, 5V control voltage is corresponding to the minimum brightness of light fixture, and the present invention occurs to automatically reply in light adjusting and controlling device
Fault when, output signal is by shorted to earth, even if power cut-off, its output also be 0V so that light fixture now can be with full power
Work, ensures that the traffic safety of vcehicular tunnel.The signal output apparatus of the present embodiment be in order to adapt to this demand
And design.The upper electricity level of the present invention clamps down on circuit (4) two effects, and one is the Shi Ji in order to during system electrification
When unstable state or high level occurs in the output of circuit 555 (5), circuit is forced for signal voltage to be set to high electricity in powered on moment
Flat, so that time base circuit 555 (5) is in reset state, 3 pin of time base circuit 555 are forced to be set to low level；Two be to signal
The pulse voltage of the output of rectification circuit is filtered.
Claims (1)
1. a kind of vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit, electric by single-chip microcomputer (1), DC-isolation
Road (2), signal rectifier circuit (3), upper electricity level clamp down on circuit (4), time base circuit 555 (5) and signal output apparatus (6) group
Become, it is characterised in that the P15 pin of singlechip CPU is connected to one end of DC isolation circuit C1, DC isolation circuit C1's is another
End is connected to the positive pole of the negative pole D2 of signal rectifier circuit D1, and the negative pole of signal rectifier circuit D2 is connected to upper electricity through resistance R2
Level clamps down on the high level end of the negative pole resistance R3 of circuit capacitance C2, and upper electricity level clamps down on the negative pole resistance R3's of circuit capacitance C2
High level end is simultaneously connected to the TRIG pin of time base circuit 555, the Q pin of time base circuit 555 and signal output apparatus diode D3
Positive pole be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254229.3A CN104244542B (en) | 2013-06-17 | 2013-06-17 | Vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254229.3A CN104244542B (en) | 2013-06-17 | 2013-06-17 | Vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104244542A CN104244542A (en) | 2014-12-24 |
| CN104244542B true CN104244542B (en) | 2017-03-08 |
Family
ID=52231633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310254229.3A Expired - Fee Related CN104244542B (en) | 2013-06-17 | 2013-06-17 | Vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104244542B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112016005113T5 (en) * | 2015-11-30 | 2018-09-20 | Eaton Intelligent Power Limited | Fail-safe lighting control system |
| CN109348602A (en) * | 2018-10-24 | 2019-02-15 | 中交第公路勘察设计研究院有限公司 | Tunnel lamp on-line monitoring system and method based on image processing techniques |
| CN111901948A (en) * | 2020-08-12 | 2020-11-06 | 广州市北二环交通科技有限公司 | Intelligent stepless adjusting method and system for tunnel illumination |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060259202A1 (en) * | 2005-01-24 | 2006-11-16 | Vaish Himangshu R | Signaling system |
| CN101969725A (en) * | 2010-10-11 | 2011-02-09 | 复旦大学 | Intelligent general light-emitting diode (LED) street lamp illuminating power supply system |
| CN102215617A (en) * | 2010-04-09 | 2011-10-12 | 复旦大学 | Partition type driving circuit for general lighting LED (light emitting diode) street lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010088031A (en) * | 2008-10-02 | 2010-04-15 | Nec Corp | Fault detection method of underlay network, and network system |
-
2013
- 2013-06-17 CN CN201310254229.3A patent/CN104244542B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060259202A1 (en) * | 2005-01-24 | 2006-11-16 | Vaish Himangshu R | Signaling system |
| CN102215617A (en) * | 2010-04-09 | 2011-10-12 | 复旦大学 | Partition type driving circuit for general lighting LED (light emitting diode) street lamp |
| CN101969725A (en) * | 2010-10-11 | 2011-02-09 | 复旦大学 | Intelligent general light-emitting diode (LED) street lamp illuminating power supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104244542A (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203027535U (en) | LED lamp having self-diagnosis and remote monitoring function | |
| CN207354096U (en) | Band-type brake drive circuit and industrial robot | |
| CN103414164B (en) | A kind of protective circuit of multiple IGBT parallel running | |
| CN104244542B (en) | Vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit | |
| CN103138729B (en) | No-voltage-type electronic touch switch | |
| CN103841694B (en) | A kind of light fixture | |
| CN202353187U (en) | Short circuit and overcurrent protection unit for storage battery | |
| CN202713690U (en) | Dimming interface circuit used for LED drive power | |
| CN103139963B (en) | The constant voltage circuit of LED aid-to-navigation light and there is the aid-to-navigation light of this constant voltage circuit | |
| CN102045919B (en) | LED light source self-diagnosis protection system | |
| CN106896755A (en) | The load driving circuits of automobile-used single low side control | |
| CN104485861A (en) | Intelligent DC position senseless photovoltaic pump drive controller | |
| CN103021200A (en) | Device and method for diagnosing fault of traffic signal lamp and controlling machine of traffic signal lamp | |
| CN202854223U (en) | Power failure detection device | |
| CN2720615Y (en) | Intelligent electricity leakage breaker | |
| CN206684219U (en) | A kind of frequency converter and its voltage detecting circuit | |
| CN201466700U (en) | Overcurrent protection back plate device | |
| CN105101564B (en) | A kind of adaptive lamp tube driver | |
| CN205232501U (en) | Intelligent emergency light | |
| CN201341255Y (en) | LED lamp current switch and control circuit for vehicle body control module | |
| CN203327292U (en) | Controller provided with short-circuit protection apparatus | |
| CN104078921A (en) | Controller with short-circuit protection device | |
| CN208581387U (en) | A kind of lamp control system and electric vehicle | |
| CN102595731A (en) | Light-dimming LED controller and output short-circuit protection method thereof | |
| CN102723771A (en) | Power supply automatic switching circuit for double-power-supply LED (Light-Emitting Diode) street lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: HEFEI YUANHUI OPTOELECTRONIC CO., LTD. Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention |
|
| 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: 20170308 Termination date: 20200617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |