CN104244542A - Fault detection response circuit for highway tunnel LED illumination dimming control device - Google Patents
Fault detection response circuit for highway tunnel LED illumination dimming control device Download PDFInfo
- Publication number
- CN104244542A CN104244542A CN201310254229.3A CN201310254229A CN104244542A CN 104244542 A CN104244542 A CN 104244542A CN 201310254229 A CN201310254229 A CN 201310254229A CN 104244542 A CN104244542 A CN 104244542A
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- control device
- fault detection
- dimming control
- 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.)
- Granted
Links
- 238000005286 illumination Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 title abstract 4
- 238000002955 isolation Methods 0.000 claims description 18
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 208000032368 Device malfunction Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A fault detection response circuit for a highway tunnel LED illumination dimming control device can be used for automatically detecting software and hardware faults which cannot be responded to automatically in the highway tunnel LED illumination dimming control device and providing and outputting corresponding signals. The fault detection response circuit is characterized in that a port of a single chip microcomputer (1) is connected with one end of a direct current isolating circuit (2), the other end of the direct current isolating circuit (2) is connected with one end of a signal rectifying circuit (3), the other end of the signal rectifying circuit (3) is connected with one end of a power-on level clamping circuit (4), the other end of the power-on level clamping circuit (4) is connected with one end of a signal trigger circuit (5), and the other end of the signal trigger circuit (5) is connected with one end of a signal output circuit (6). When the dimming control device has the faults which cannot be responded to automatically, the brightness of an illumination lamp can be forced to be adjusted to the maximum through the fault detection response circuit, and therefore the traffic safety of a highway tunnel is guaranteed.
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 detect the soft and hardware fault that cannot automatically reply in vcehicular tunnel LED illumination light adjusting and controlling device automatically, and provides corresponding signal to export.
Background technology
At present, vcehicular tunnel LED illumination intelligent dimming control device (hereinafter referred to as light adjusting and controlling device) is applied more and more in highway tunnel illumination field.Universal along with vcehicular tunnel intelligent lighting, its energy-saving and cost-reducing to highway tunnel illumination field, extend light fixture useful life, the cable investment etc. that saves lighting will produce great impact.Usually, during light adjusting and controlling device generation software fault, by watchdog circuit by system reset, program counter restarts work.As number of patent application 200910194241.3 discloses a more advanced watchdog circuit; It can adjust the time interval of feeding-dog signal, flexible configuration watchdog circuit.And for example patent No. CN02122897.3 discloses integrated circuit bolt-lock phenomenon (latchup) protection circuit on a kind of chip; It is mainly used in eliminating the occurrent bolt-lock phenomenon of circuit adopting microprocessor, can get back to normal operating conditions in time when guaranteeing system generation bolt-lock.But the deficiency of these inventions is the program bolt-lock only can eliminated in systems soft ware running, can not eliminate the out-of-control phenomenon that system hardware fault produces.In the highway tunnel illumination system very high to safety requirements, light adjusting and controlling device only has watchdog circuit to be far from being enough to eliminate partial fault.Such as run into power cut-off, failure welding, system is struck by lightning or other unfavorable factors cause part component damage, fault etc., and when control device cannot normally be worked, foregoing invention is by ineffective; This not only can cause communicating interrupt, the lighting brightness in tunnel more importantly can be caused out of control or maintain a lower level, jeopardize traffic safety.Therefore, set up the fault detect response circuit of light adjusting and controlling device, under light adjusting and controlling device breaks down situation, mandatory light modulation is carried out to highway tunnel lighting lamp tool, tunnel illumination light fixture full power is exported, this, to reliability and the fail safe of guaranteeing whole dimming control system, has very important significance.In highway tunnel illumination, because the impact of illuminator on tunnel traffic safety is very big, therefore when light adjusting and controlling device designs, when must guarantee the software that its generation can not automatically reply or hardware fault, lamp brightness must not be closed by system, particularly for being used for the reinforcement lighting eliminating " black-hole effect " daytime.Under light adjusting and controlling device malfunction, any closedown or dimming lamp brightness or maintain lower luminance level and all likely cause traffic accident: thus, must guarantee that light adjusting and controlling device still can control lighting brightness when there is the fault that cannot automatically reply is in maximum brightness state and full power state.Although this control program is when light adjusting and controlling device breaks down, the energy consumption of illuminator can be made significantly to increase, and it can guarantee traffic safety; Energy-conservation pattern with an automatic light meter can be recovered after light adjusting and controlling device reparation.The analog signal dimming lamp of current commercial type mainly contains the LED tunnel lamp of DC0-5V light modulation, the wherein full power output of the corresponding light fixture of 0V signal voltage and high-high brightness, the minimum power (10% of rated power) of the corresponding light fixture of 5V signal voltage exports, and this requires considered for the specific safety in this enclosure space of vcehicular tunnel.When the fault that vcehicular tunnel light adjusting and controlling device generation no signal exports, thisly can the power of the reverse LED tunnel lamp of light modulation can automatically rise to maximum, make road surface brightness brightness can not be maintained reduced levels because of light controller fault, thus ensure that traffic safety.If but light adjusting and controlling device its output signal voltage when breaking down is not 0V, but random analog signal voltage or the analog signal voltage close to 5V, then in tunnel will there is drift or maintain comparatively low brightness level in the brightness of light fixture, and this still can jeopardize traffic safety.Therefore, the present invention is directed to the fault mode that light adjusting and controlling device may occur, make it under any malfunction that cannot automatically reply, the LED tunnel lamp brightness with reverse dimming function all can be made to rise to maximum, thus ensure that the fail safe of illuminator and the traffic safety in tunnel.
Summary of the invention
When vcehicular tunnel LED illumination light adjusting and controlling device breaks down, traffic accident is caused in order to prevent controlled light fixture to be in comparatively low-light level state, 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 automatically reply in light adjusting and controlling device, the exportable a certain level signal of this circuit, go to notify that the LED tunnel lamp pressure with inverse analog dimming function is maybe adjusted to the brightest by relevant device, its full power is exported, thus guarantees the traffic safety of vcehicular tunnel.
To achieve these goals, present invention employs following technical scheme: 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 and the level that powers on of signal rectifier circuit (3) clamp down on circuit (4) is connected, the other end that the level that powers on clamps down on circuit (4) is connected with one end of signal circuits for triggering (5), the other end of signal circuits for triggering (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); This signal is sent to signal rectifier circuit (3) after DC isolation circuit.When single-chip microcomputer (1) can not send pulse signal because of fault, no matter now port is high level or low level or high-impedance state, DC isolation circuit (2) all no signal exports, therefore the output voltage of signal rectifier circuit (3) declines, and the output voltage that the level that powers on clamps down on circuit (4) also declines thereupon; When voltage is down to certain value, the state of signal circuits for triggering (5) changes, high level output is transferred to by low level output, thus control signal output circuit (6) exports a certain level signal, go to notify that the LED tunnel lamp with inverse analog dimming function is maybe forced light modulation by relevant device, its full power is exported.
The invention has the beneficial effects as follows, when the software that cannot automatically reply or hardware circuit fault occur control system, circuit can export corresponding low level signal and go to control light fixture, makes it work in full power state; Also exportable corresponding signal goes to inform relevant device.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the circuit diagram of the embodiment of the present invention.
1. single-chip microcomputers, 2. DC isolation circuit, 3. signal rectifier circuit in figure, the level that 4. powers on clamps down on circuit, 5. signal circuits for triggering, 6. signal output apparatus.
Embodiment
In FIG, 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 and the level that powers on of signal rectifier circuit (3) clamp down on circuit (4) is connected, the other end that the level that powers on clamps down on circuit (4) is connected with one end of signal circuits for triggering (5), and the other end of signal circuits for triggering (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); This signal is sent to signal rectifier circuit (3) after DC isolation circuit.When single-chip microcomputer (1) can not send pulse signal because of fault, no matter now port is high level or low level or high-impedance state, DC isolation circuit (2) all no signal exports, therefore the output voltage of signal rectifier circuit (3) declines, and the output voltage that the level that powers on clamps down on circuit (4) also declines thereupon; When voltage is down to certain value, the state of signal circuits for triggering (5) changes, high level output is transferred to by low level output, thus control signal output circuit (6) exports a certain level signal, go to notify that the LED tunnel lamp with simulation dimming function is maybe forced light modulation by relevant device, its full power is exported.
In fig. 2, a port P15 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 and the level that powers on of signal rectifier circuit (3) clamp down on circuit (4) is connected, the other end that the level that powers on clamps down on circuit (4) is connected with one end of signal circuits for triggering (5), and the other end of signal circuits for triggering (5) is connected with one end of signal output apparatus (6).Wherein single-chip microcomputer (1) is made up of CPU and peripheral circuit thereof, DC isolation circuit (2) is made up of electric capacity C1, signal rectifier circuit (3) is made up of diode D1, D2 and resistance R1, R2, the level that powers on is clamped down on circuit (4) and is made up of resistance R3 and electric capacity C2, signal circuits for triggering (5) are made up of 555 time-base circuits and resistance R4, and signal output apparatus (6) is made up of diode D3, resistance R5, R6, R7, R8, triode Q1, Q2.No matter which kind of fault occurs single-chip microcomputer (1) in circuit, comprise power failure, all can not provide pulse to DC isolation circuit, thus can cause 2 pin trigger end voltage drops of time-base circuit 555.When 2 pin voltages of time-base circuit 555 are down to 1/3Vcc, signal circuits for triggering (5) reverse, and 3 pin of time-base circuit 555 export high level, and Q1, Q2 of driving signal output circuit (6), make it output signal shorted to earth; The LED tunnel lamp that some have a simulation dimming function due to current vcehicular tunnel is down to reduced levels in order to brightness when preventing control device generation power failure no signal from exporting, thus during design, 0V control voltage is corresponded to the high-high brightness of light fixture, 5V control voltage corresponds to the minimum brightness of light fixture, and the present invention is when there is the fault that cannot automatically reply in light adjusting and controlling device, output signal is by shorted to earth, even if power cut-off, its output is also 0V, make light fixture now with full power operation, thus the traffic safety of vcehicular tunnel can be ensure that.Namely the signal output apparatus of the present embodiment designs to adapt to this demand.The level that powers on of the present invention clamps down on circuit (4) two effects, one is in order in system electrification process, when there is labile state or high level in the output of signal circuits for triggering (5), circuit is forced signal voltage to be set to high level at powered on moment, to make signal circuits for triggering (5) be in reset mode, 3 pin of time-base circuit 555 are forced to be set to low level; Two is carry out filtering to the pulse voltage of the output of signal rectifier circuit.
Claims (1)
1. a vcehicular tunnel LED illumination light adjusting and controlling device fault detect response circuit, by single-chip microcomputer (1), DC isolation circuit (2), signal rectifier circuit (3), the level that powers on clamps down on circuit (4), signal circuits for triggering (5) and signal output apparatus (6) composition, 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 and the level that powers on of signal rectifier circuit (3) clamp down on circuit (4) is connected, the other end that the level that powers on clamps down on circuit (4) is connected with one end of signal circuits for triggering (5), the other end of signal circuits for triggering (5) is connected with one end of signal output apparatus (6).
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 true CN104244542A (en) | 2014-12-24 |
| CN104244542B 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108370634A (en) * | 2015-11-30 | 2018-08-03 | 伊顿智能动力有限公司 | 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060259202A1 (en) * | 2005-01-24 | 2006-11-16 | Vaish Himangshu R | Signaling system |
| JP2010088031A (en) * | 2008-10-02 | 2010-04-15 | Nec Corp | Fault detection method of underlay network, and network 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 |
-
2013
- 2013-06-17 CN CN201310254229.3A patent/CN104244542B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060259202A1 (en) * | 2005-01-24 | 2006-11-16 | Vaish Himangshu R | Signaling system |
| JP2010088031A (en) * | 2008-10-02 | 2010-04-15 | Nec Corp | Fault detection method of underlay network, and network 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108370634A (en) * | 2015-11-30 | 2018-08-03 | 伊顿智能动力有限公司 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104244542B (en) | 2017-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9625931B2 (en) | Bypass type 220V grid voltage sag prevention device and control method therefor | |
| CN102761248B (en) | Power conversion circuit and conversion controller | |
| CN104483883B (en) | A kind of relay control unit | |
| EP2751894A1 (en) | Wall box device for managing energy | |
| CN103152903A (en) | Light-emitting diode (LED) lamp with self diagnosis and remote monitoring functions | |
| CN206237639U (en) | A kind of novel intelligent traffic LED signal lamp control circuit and control machine | |
| KR20160111582A (en) | Leakage currrent detection circuit, light apparatus comprising the same and leakage currrent detection method | |
| CN204177854U (en) | Medical Devices and cut-offing alarming circuit thereof | |
| CN102969200A (en) | High-reliable single-chip microcomputer control relay device | |
| CN103138729B (en) | No-voltage-type electronic touch switch | |
| CN104244542A (en) | Fault detection response circuit for highway tunnel LED illumination dimming control device | |
| CN212114769U (en) | Motor protection system with delayed power-off function | |
| CN101488102A (en) | Control circuit of watchdog in embedded system | |
| CN106209050B (en) | Low-cost low-power consumption electronic switch circuit | |
| CN204479726U (en) | The indicating fault control circuit of the two redundant electrical pow er supply system of a kind of airplane signal lamp | |
| US9308821B2 (en) | Internal power supply control device having at least one lighting control device for a motor vehicle | |
| 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 | |
| CN105515453A (en) | Servo driver brake control circuit | |
| CN219644153U (en) | Backlight chip protection circuit, circuit board, backlight board and display device | |
| CN202854223U (en) | Power failure detection device | |
| CN218510283U (en) | Electromagnetic valve driving circuit capable of monitoring action current | |
| WO2014056243A1 (en) | Intelligent power supply detection and control apparatus | |
| CN205304217U (en) | Cross undervoltage protection ware | |
| CN202917396U (en) | High reliability single-chip microcomputer control relay device | |
| CN104078921A (en) | Controller with short-circuit protection device |
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 |