CN102665351B - Self-learning LED (Light-Emitting Diode) navigation aiding lamplight strength control device - Google Patents
Self-learning LED (Light-Emitting Diode) navigation aiding lamplight strength control device Download PDFInfo
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Abstract
The invention relates to a self-learning LED (Light-Emitting Diode) navigation aiding lamplight strength control device. The input ends of a transformer and a current transformer are connected to the secondary stage of an isolation transformer in a navigation aiding lamp loop after being connected in series; the output end of the transformer is connected with the input end of a power supply unit; the output end of the power supply unit is connected with the power supply input ends of a control unit and a driving unit; the output end of the current transformer is connected with the input end of the detection unit; the output end of the detection unit is connected with the input end of the control unit; the output end of the control unit is connected with the input end of the driving unit; and the output end of the driving unit is connected with an LED light source. The self-learning LED navigation aiding lamplight strength control device has the advantages that: the LED navigation aiding lamp can be used for directly replacing the original conventional navigation aiding lamp for an airport, so that an original dimming system is not required to be refitted; in a designed lamp, a high-power LED is taken as a light source; and compared with the conventional lamp, the self-learning LED navigation aiding lamplight strength control device has the characteristics of pure light color, low power consumption, long service life, high adaptability, and the like.
Description
Technical field
The present invention relates to airfield aid light device, specifically a kind of self-learning type LED navigation lamp light intensity control device.
Background technology
The widely used navaid light adjusting system in current civil aviation airport, the light intensity of light is divided into 5 grades.By constant-current dimmer, the light intensity of airfield aid light is adjusted to required light intensity grade.The secondary aid-to-navigation light loop that is connected to of step-up transformer T1.Aid-to-navigation light loop is the suspension loop being together in series by a series of isolating transformer T2, as shown in Figure 1.The electric current that flows through all isolating transformer T2 in this loop is identical, and aid-to-navigation light L is connected to the secondary of isolating transformer T2, and the electric current of isolating transformer T2 primary and secondary remains 1:1 relation, and the luminous intensity of lamp is directly proportional to the electric current in loop.The size that changes like this electric current in loop just can regulate the brightness of aid-to-navigation light.Meanwhile, during current constant in loop, the brightness of aid-to-navigation light also will remain on steady state.So also identical with regard to the brightness of all aid-to-navigation lights in assurance system.The national standard (MH/T 6010-1999) of aid-to-navigation light constant-current dimmer is stipulated at present: dimmer (1-5 level) at different levels output current is respectively: 6.6A, 5.2A, 4.1A, 3.4A, 2.8A.Concrete as table 1.
The nominal value of table 1 dimmer output currents at different levels and permission excursion thereof
| Current level | Nominal value (A) | Allow excursion (A) |
| 5 | 6.6 | 6.40~6.70 |
| 4 | 5.2 | 5.04~5.36 |
| 3 | 4.1 | 3.98~4.22 |
| 2 | 3.4 | 3.30~3.50 |
| 1 | 2.8 | 2.72~2.88 |
At present, the aid-to-navigation light light source on airport is mostly incandescent lamp, tungsten halogen lamp, and this class lamp power is large, efficiency is low.The shortcomings such as the life-span is short, and in use, need to adopt colour filter to obtain required color of light, not only utilance is low, and photochromic impure.While using LED as light source, cannot directly be connected in light modulation loop, need additional drives control circuit device.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of self-learning type LED navigation lamp light intensity control device is provided, need not add extra light intensity to locking equipment, need not existing dimmer be transformed or be changed.
According to technical scheme provided by the invention, described self-learning type LED navigation lamp light intensity control device comprises: transformer, after the input series connection of current transformer, be connected to the secondary of isolating transformer in aid-to-navigation light loop, the output of transformer connects with the input of power subsystem, the same control unit of output of power subsystem, the power input of driver element connects, the output of current transformer connects with the input of detecting unit, the output of detecting unit connects with the input of control unit, control unit output connects with the input of driver element, the output of driver element connects LED light source, described power subsystem includes DC/DC converter, operating voltage is provided and provides driving LED required voltage to driver element respectively to control unit, current transformer detects the light modulation electric current of dimmer output, by detecting unit, current signal is converted to voltage signal, after filtering interference signals, for control unit, carries out AD sampling, control unit is converted into analog quantity after digital quantity, then the light intensity class information comparison that this digital quantity is stored with self, judges current light adjusting grade, and to driver element, exports the pwm control signal of corresponding brightness, described driver element is used current constant mode driving LED light source, and by PWM mode, LED light source is carried out to brilliance control.
Further, described control unit adopts a microprocessor.
Described control unit carries out timing AD sampling to the signal of detecting unit output, draws the data after quantification, and the data that quantize are carried out to digital filtering, further removes disturbing factor.
Described control unit carries out after AD sampling, judges in stored record, whether have light intensity grade and current information record; If there is no record, to store this current information (fluctuation range of size of current, electric current), and start that dimmer is exported to different light adjusting grades and carry out self study, in learning process, light source is put minimum brightness; If there is record, according to the current information of sampling, carry out the judgement of light adjusting grade, LED light source is in corresponding brightness; Described self study refers to: at dimmer, exports under each light adjusting grade, and the current information that control unit minute book grade is corresponding, after the current stabilization of a grade, complete to the study of this grade; Treat that 5 grade study are complete, control unit automatic analysis is learnt the current information of 5 grades, and current information according to light intensity grade classification is the current range of 5 grades of correspondence.
When dimmer or aid-to-navigation light access aid-to-navigation light loop first, LED navigation lamp light intensity control device need to carry out the process of a self study: at dimmer, export under each light intensity grade, the current information that control unit minute book grade is corresponding, after the current stabilization of a grade, complete to the study of this grade; Treat that 5 grade study are complete, control unit automatic analysis is learnt the current information of 5 grades, and current information according to light intensity grade classification is the current range of 5 grades of correspondence.
Described driver element comprises: the brightness regulation pwm control signal that drives the light modulation input connection control unit output of control chip, drive the current sample end of control chip to connect LED current sense resistor to ground, drive the output of control chip to connect the base stage that drives triode, drive transistor collector to connect power supply, emitter connects the positive pole of LED light source; Described LED current sense resistor is serially connected in the loop of LED light source, drives control chip to detect the electric current that current flowing detects resistance, and controls and drive triode to realize the brightness adjustment control of LED light source, and LED light source is remained under constant current state work.
Control unit continue to detect the electric current of light intensity grade of living in, as electric current in aid-to-navigation light loop detected and fluctuate, and after current stabilization, records current electric current, the current information of the light intensity grade of living in of storing is upgraded simultaneously.
Advantage of the present invention is: without extra independent intensity control holding wire is provided, only according to the size of current (isolating transformer secondary current size) that detects dimmer output, automatically adjust light light intensity; The LED aid-to-navigation light of the present invention's design can directly be replaced the original traditional aid-to-navigation light in airport, need not transform original light adjusting system; It is light source that the light fixture of designing adopts great power LED, with traditional light fixture, compare and there is the features such as photochromic pure, low in energy consumption, life-span length, strong adaptability, meet the fundamental policy that national energy-saving reduces discharging, significant for the operation supportability that promotes Civil Aviation Airport.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of voyage aid of the airport circuit for lamp.
Fig. 2 is circuit structure block diagram of the present invention.
Fig. 3 is workflow diagram of the present invention.
Fig. 4 is driver element circuit theory diagrams.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 2, circuit structure of the present invention comprises: transformer 1, after the input series connection of current transformer 2, be connected to the secondary of isolating transformer in aid-to-navigation light loop, the output of transformer 1 connects with the input of power subsystem 3, the output of power subsystem 3 is with control unit 5, the power input of driver element 6 connects, the output of current transformer 2 connects with the input of detecting unit 4, the output of detecting unit 4 connects with the input of control unit 5, control unit 5 outputs connect with the input of driver element 6, the output of driver element 6 connects LED light source 7.
Described power subsystem 3 includes DC/DC converter, work+5V voltage is provided and provides driving LED required voltage to driver element 6 respectively to control unit 5; Current transformer detects the light modulation electric current of dimmer output, by detecting unit 4, current signal is converted to voltage signal, after filtering interference signals, for control unit 5, carries out AD (analog to digital converter) sampling; Control unit 5 contains microprocessor (MCU), the voltage signal of detecting unit 4 outputs is carried out to AD sampling, analog quantity is converted into after digital quantity, the light intensity class information comparison of again this digital quantity being stored with self, judge current light adjusting grade, and to driver element 6, export PWM (pulse-width modulation) control signal of corresponding brightness; Described driver element 6 is used current constant mode driving LED light source 7, and by PWM mode, LED light source 7 is carried out to brilliance control.Make LED in corresponding bright grade.
The circuit theory of driver element 6 as shown in Figure 4.In figure, VCC, GND are power input.PWM is control unit 5 output brightness conditioning signals.Driving control chip U1 model is MAX16803.Drive the light modulation input DIM of control chip U1 to connect pwm control signal, drive the current sample end CS+ of control chip U1 to connect LED current sense resistor R1 to ground, drive the output of control chip U1 to connect the base stage that drives triode Q1, drive triode Q1 collector electrode to meet power supply VCC, emitter connects the positive pole of LED light source; Described LED current sense resistor R1 is serially connected in the loop of LED light source.Drive control chip U1 to detect the electric current that current flowing detects resistance R 1, and control and drive triode Q1 to realize the brightness adjustment control of LED, and LED is remained under constant current state work.
Aid-to-navigation light constant-current dimmer is accepted the light modulation instruction of airfield control central, and the light intensity of airfield aid light is adjusted to required light intensity grade.And for each light intensity grade, aid-to-navigation light constant-current dimmer is exported different electric currents, light intensity grade is one to one with the electric current in aid-to-navigation light loop like this.So can judge residing light intensity grade according to size of current in aid-to-navigation light loop.
There is error, fluctuation in the electric current of exporting due to constant-current dimmer, so the corresponding size of current of each light intensity grade is a scope, rather than certain fixing value; Because on-the-spot sailing-assisting lamp system and wiring can not change, the electric current of output loop (isolating transformer primary return) that cannot direct-detection light adjusting system, can only detect isolating transformer secondary current; The current transfer ratio of isolating transformer primary and secondary there are differences because of Product Process problem; The secondary load meeting variation when aid-to-navigation light light modulation of isolating transformer, has influence on isolating transformer primary and secondary current transfer ratio.Due to above reason, the output loop electric current of light adjusting system and isolating transformer secondary current are not steady state values, if the accurate judgement to dimmer current class when aid-to-navigation light not by self study mode, is difficult to adapt to actual use.So the designed aid-to-navigation light of the present invention can detect the electric current of (isolating transformer is secondary) in loop automatically, and constantly according to the current range that electric current correction grade of living in detected.Aid-to-navigation light is stored in learnt current range in inner memory, and power down is not lost.After powering on next time, can directly enter corresponding light intensity grade according to loop current.
Constant-current dimmer (aid-to-navigation light) accesses aid-to-navigation light loop (navaid light adjusting system), the process that need to carry out a self study first.
Such as: first constant-current dimmer is exported the electric current of corresponding grade 1, and aid-to-navigation light is by current information (fluctuation range of size of current, electric current) corresponding to minute book grade.After grade 1 is stable, the study of aid-to-navigation light In Grade 1 is also complete, next the output of dimmer can be adjusted to grade 2.Learning process ad eundem 1 is the same.Until learnt 5 grades.Treat that the 5th grade study is complete, aid-to-navigation light is learnt automatic analysis the current information of 5 grades, and according to light intensity grade classification, is 5 corresponding grades to current information.After the data analysis that completes current information is processed, aid-to-navigation light automatically switches to corresponding light intensity grade by output intensity.
In course of normal operation, the aid-to-navigation light of the present invention's design still detects the electric current of light intensity grade of living in always.As electric current in aid-to-navigation light loop detected and fluctuate, after current stabilization, record current size of current, the current information of the corresponding light intensity grade of storage is carried out to synchronous renewal, to guarantee the current information accuracy of storage simultaneously.
When dimmer output intensity grade changes, curent change is larger, and aid-to-navigation light contrasts the electric current detecting with each grading current information of storing, judge residing light intensity grade, and export corresponding light intensity brightness.
It is below the workflow of a specific embodiment.
1, as shown in Figure 3, after control device powers on, microprocessor (MCU) first carries out the initialization of self.
2, MCU carries out timing AD sampling to the signal of detecting unit 4 outputs, draws the data after quantification.And the data that quantize are carried out to digital filtering, further remove disturbing factor.Draw stable, data message accurately.
3, MCU judges the data of sampling, whether judges in stored record current information record.Whether learnt the brightness degree of dimmer.
A: if there is no learning records, next dimmer is exported to different light adjusting grades and learn.First store this current information, until study is to the current information of 5 light adjusting grades.In learning process, light source is put minimum brightness.
B: if there is learning records, next enter normal workflow.According to the current information of sampling, carry out the judgement of brightness degree, LED light source 7 is in corresponding brightness.According to current light modulation current information, judge whether to carry out suitable correction to the electric current record of storage simultaneously.To guarantee the accuracy of each grading current information of record.
Claims (7)
1. self-learning type LED navigation lamp light intensity control device, it is characterized in that: comprise and after transformer (1) is connected with the input of current transformer (2), be connected to again the secondary of isolating transformer in aid-to-navigation light loop, the input of the same power subsystem of output (3) of transformer (1) connects, the same control unit of output (5) of power subsystem (3), the power input of driver element (6) connects, the input of the same detecting unit of output (4) of current transformer (2) connects, the input of the same control unit of output (5) of detecting unit (4) connects, the input of the same driver element of control unit (5) output (6) connects, the output of driver element (6) connects LED light source (7), described power subsystem (3) includes DC/DC converter, operating voltage is provided and provides driving LED required voltage to driver element (6) respectively to control unit (5), current transformer detects the light modulation electric current of dimmer output, by detecting unit (4), current signal is converted to voltage signal, after filtering interference signals, for control unit (5), carries out AD sampling, control unit (5) is converted into analog quantity after digital quantity, then the light intensity class information comparison that this digital quantity is stored with self, judges current light adjusting grade, and to driver element (6), exports the pwm control signal of corresponding brightness, described driver element (6) is used current constant mode driving LED light source (7), and by PWM mode, LED light source (7) is carried out to brilliance control,
When dimmer or aid-to-navigation light access aid-to-navigation light loop first, need to carry out the process of a self study: at dimmer, export under each light intensity grade, current information corresponding to control unit (5) minute book grade, after the current stabilization of a grade, complete to the study of this grade; Treat that 5 grade study are complete, control unit (5) automatic analysis is learnt the current information of 5 grades, and current information according to light intensity grade classification is the current range of 5 grades of correspondence.
2. self-learning type LED navigation lamp light intensity control device as claimed in claim 1, is characterized in that, described control unit (5) adopts a microprocessor.
3. self-learning type LED navigation lamp light intensity control device as claimed in claim 1, it is characterized in that, described control unit (5) carries out timing AD sampling to the signal of detecting unit (4) output, draw the data after quantification, and the data that quantize are carried out to digital filtering, further remove disturbing factor.
4. self-learning type LED navigation lamp light intensity control device as claimed in claim 1, is characterized in that, described control unit (5) carries out after AD sampling, judges in stored record, whether have light intensity grade and current information record; If there is no record, to store this current information, and start that dimmer is exported to different light adjusting grades and carry out self study, in learning process, light source is put minimum brightness; If there is record, according to the current information of sampling, carry out the judgement of light adjusting grade, LED light source (7) is in corresponding brightness.
5. self-learning type LED navigation lamp light intensity control device as described in claim 1 or 4, is characterized in that, described current information comprises: the fluctuation range of size of current, electric current.
6. self-learning type LED navigation lamp light intensity control device as claimed in claim 1, it is characterized in that, described driver element (6) comprising: the brightness regulation pwm control signal that drives light modulation input (DIM) connection control unit (5) output of control chip (U1), drive the current sample end (CS+) of control chip (U1) to connect LED current sense resistor (R1) to ground, drive the output of control chip (U1) to connect the base stage that drives triode (Q1), drive triode (Q1) collector electrode to connect power supply (VCC), emitter connects the positive pole of LED light source; Described LED current sense resistor (R1) is serially connected in the loop of LED light source, drive control chip (U1) to detect the electric current that current flowing detects resistance (R1), and control to drive triode (Q1) to realize the brightness adjustment control of LED light source, and LED light source is remained under constant current state work.
7. self-learning type LED navigation lamp light intensity control device as claimed in claim 1, it is characterized in that, control unit (5) continues to detect the electric current of light intensity grade of living in, as electric current in aid-to-navigation light loop detected and fluctuate, after current stabilization, record current electric current, the current information of the light intensity grade of living in of storage is upgraded simultaneously.
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| CN111867209B (en) * | 2020-06-23 | 2023-08-11 | 中国民用航空总局第二研究所 | Control method, device and system of airport navigation aid lamp set |
| CN114096035B (en) * | 2021-11-26 | 2024-05-03 | 航达康机电技术(武汉)有限公司 | System and method for switching light intensity output level configuration of navigation lights |
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Address after: The new plum village in Jiangsu province 214112 city Wuxi Qunxing Road No. 26 Patentee after: Wuxi Ampang electric Limited by Share Ltd Address before: The new plum village in Jiangsu province 214112 city Wuxi Qunxing Road No. 26 Patentee before: Anbang Electric Co., Ltd., Wuxi |