CN203748069U - Power management circuit of novel LED road indicating board - Google Patents
Power management circuit of novel LED road indicating board Download PDFInfo
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- CN203748069U CN203748069U CN201420084330.9U CN201420084330U CN203748069U CN 203748069 U CN203748069 U CN 203748069U CN 201420084330 U CN201420084330 U CN 201420084330U CN 203748069 U CN203748069 U CN 203748069U
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- 239000003990 capacitor Substances 0.000 claims description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052744 lithium Inorganic materials 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model relates to the field of LED circuits in road traffic, in particular to a power management circuit of a novel LED road indicating board. The power management circuit comprises an MCU and a chip which is electrically connected with the MCU, and is electrically connected with a resistor R14, a triode Q2 and an LED indicating lamp module at an output end in sequence; the other end of the LED indicating lamp module is sequentially and electrically connected with a resistor R2 and a resistor R1 which are connected in series; a voltage dividing circuit is composed of the resistor R2 and the resistor R1; a charging circuit, which is composed of a triode Q1, a fuse FUSE1, a resistor R4, a resistor R5, a resistor R3, a solar cell and a solar cell panel connected with the solar cell, is connected in a circuit in which the resistor R2 and the LED indicating lamp module are connected; and the MCU is further connected with a light-operated and reset circuit.
Description
Technical field
The utility model relates to the LED circuit field in road traffic, relates to specifically a kind of electric power management circuit of New LED road indicator.
Background technology
The implementation method of the power-supply management system of existing LED road indicator be by analog circuit to photosensitive perception input, whether the work that calculates the double threshold comparison circuit control LED luminous component that the analog component parameter of circuit realizes period by circuit design is to realize easy power management function.Existing electric power management circuit is realized because be the implementation of pure simulation, therefore has the following shortcoming:
1. the opening and closing of electric power management circuit are to rely on respectively the Lower Threshold of comparison circuit and Upper threshold to realize, and therefore the Lower Threshold of comparison circuit need to pass through potentiometer manual adjustment, the bad control of point of adjustment.
2. be operated in the open-air atmosphere of road due to LED road sign, light conditions more complicated on road surface and changeable, the double threshold comparator of analog circuit is easily subject to the interference of surround lighting and street lamp light and car bulb, thereby easily produces and beat, and makes power-supply management system job insecurity.
3. the LED of road sign output is the mode of binaryzation,, as long as open and close two states, the management of power supply is brought to very large inconvenience.
Utility model content
For the deficiency in above-mentioned technology, the utility model provides a kind of electric power management circuit of New LED road indicator, this circuit has adopted bleeder circuit control LED light module, in circuit, be provided with light-operated and reset circuit, can be well controlled to the LED lamp direction board in road simultaneously.
For solving the problems of the technologies described above, the utility model is realized by following scheme: a kind of electric power management circuit of New LED road indicator, comprise MCU, the chip being electrically connected with MCU, and be electrically connected successively resistance R 14 at output, triode Q2, LED light module, at the other end of described LED light module, be electrically connected with successively the resistance R 2 of series connection, resistance R 1, resistance R 2, resistance R 1 forms bleeder circuit, in the circuit being connected with LED light module in resistance R 2, also be connected with triode Q1, fuse FUSE1, resistance R 4, resistance R 5, resistance R 3, the charging circuit that solar cell and the solar panel being connected with solar cell form, described MCU is also connected with light-operated and reset circuit.
Further, described light-operated and reset circuit is by photo resistance RL1, resistance R 7, capacitor C 4, adjustable resistance R10 parallel connection, is electrically connected composition after in parallel with resistance R 6.
Further, in charging circuit, solar cell is electrically connected resistance R 3, resistance R 4 successively, and resistance R 4 is in parallel with fuse FUSE1, rear connecting triode Q1 in parallel, triode Q1, resistance R 4 negative pole end contact resistance R5.
Further, described triode Q1 is also electrically connected chargeable lithium cell, this chargeable lithium cell is electrically connected 7805 circuit of three-terminal voltage-stabilizing integrated, the 7805 another two ends of circuit of three-terminal voltage-stabilizing integrated are electrically connected respectively resistance R 8, resistance R 9, described resistance R 9 negative pole ends connect capacitor C 8 and capacitor C 9, and capacitor C 8 is in parallel with capacitor C 9.
Further, described resistance R 8 positive terminals connect LED lamp indicator light module, chargeable lithium cell, triode Q1.
The beneficial effects of the utility model are:
1. the present invention can realize the power-supply system optimised management of LED road sign in function, realizes in the time of the first LED instruction of various outside illumination conditions work and maximizing.
2. the effective rate of utilization that battery power is used maximizes.
3. realize the super-charge super-discharge protection of battery, thereby realize maximise battery life.
4. the complexity of the production debugging aspect of equipment simplification Analog Circuit Design can largely improve again reliability and the useful life of LED road indicator power-supply system work, also can reduce the work workload of device fabrication and debugging simultaneously.
Brief description of the drawings
Fig. 1 is the electric power management circuit schematic diagram of the utility model LED road indicator.
Fig. 2 is the leading portion partial circuit enlarged drawing of Fig. 1.
Fig. 3 is the back segment partial circuit enlarged drawing of Fig. 1.
Fig. 4 is the light-operated and reset circuit figure of the utility model.
Fig. 5 is the utility model schematic block circuit diagram.
Fig. 6 is the utility model circuit control flow block diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
Electric power management circuit adopts brand-new design theory, introduce up-to-date numerical control control technology, the monitoring of the perception to ambient lighting and internal cell voltage adopts digital AD technology, by simulation light intensity and cell voltage are carried out to digital sample, the light intensity signal of simulation is transformed into the digital signal that microprocessor can be identified, and calculate the dump energy of battery according to the situation of current cell voltage, in conjunction with the strong and weak grade of outside light intensity, the opening and closing of LED luminous component are done accurately and controlled, in the time that outside light intensity deficiency needs the luminous instruction of sign board, can carry out LED luminous component according to battery electric quantity and carry out PWM brilliance control, thereby can realize very easily power management control.For the double threshold control strategy of traditional analog comparison circuit, the utility model can well be eliminated the interference saltus step of surround lighting saltus step to LED road sign system.
Concrete circuit please refer to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, Fig. 2, Fig. 3 is respectively the circuit enlarged drawing on the LED light module both sides of Fig. 1, the electric power management circuit of the utility model LED road indicator, comprise MCU 300, the chip 400 being electrically connected with MCU 300, and be electrically connected successively resistance R 14 at output, triode Q2, LED light module, MCU 300 is single-chip microcomputer, its model is STC12C5A60S2, at the other end of described LED light module, be electrically connected with successively the resistance R 2 of series connection, resistance R 1, resistance R 2, resistance R 1 forms bleeder circuit, in the circuit being connected with LED light module in resistance R 2, also be connected with triode Q1, fuse FUSE1, resistance R 4, resistance R 5, resistance R 3, the charging circuit that solar cell 100 and the solar panel being connected with solar cell form, described MCU 300 is also connected with light-operated and reset circuit.Described light-operated and reset circuit is by photo resistance RL1, resistance R 7, capacitor C 4, adjustable resistance R10 parallel connection, is electrically connected composition after in parallel with resistance R 6.In charging circuit, solar cell 100 is electrically connected resistance R 3, resistance R 4 successively, and resistance R 4 is in parallel with fuse FUSE1, rear connecting triode Q1 in parallel, triode Q1, resistance R 4 negative pole end contact resistance R5.Described triode Q1 is also electrically connected chargeable lithium cell 500, this chargeable lithium cell 500 is electrically connected 7805 circuit of three-terminal voltage-stabilizing integrated 200, the 7805 another two ends of circuit of three-terminal voltage-stabilizing integrated 200 are electrically connected respectively resistance R 8, resistance R 9, described resistance R 9 negative pole ends connect capacitor C 8 and capacitor C 9, and capacitor C 8 is in parallel with capacitor C 9.Described resistance R 8 positive terminals connect LED lamp indicator light module, chargeable lithium cell 500, triode Q1, and the model of described 7805 circuit of three-terminal voltage-stabilizing integrated 200 is GDN7805.
As shown in Figure 4, by resistance R 1, R2, the bleeder circuit that forms, the voltage that solar cell produces carries out dividing potential drop on R1, R2, calculates internal cell voltage by dividing potential drop ratio, in the time of power voltage insufficient, opens charging and controls triode Q1.
As shown in Figure 3, the bleeder circuit being formed by resistance R 6, resistance R 7, photo resistance RL1, resistance R 10, in the time that environmental light intensity changes, the resistance of photo resistance RL1 can change, light intensity is stronger, the resistance of photo resistance RL1 is less, and photo resistance RL1 resistance is larger on the contrary, therefore changes the light intensity of reacting external environment condition at resistance R 7 upper end sampled voltages by AD.Control the driving of triode Q2 out-put supply by P2.0, the P2.1 of MCU U2 by chip 400 and light LED group, chip 400 is and door U3 that its model is 74LS21.
As shown in Figure 5, Figure 6, by MCU 300, the voltage data of resistance R 1 upper end is carried out after AD sampling, the battery electric quantity of storing in matcher and voltage curve data, can calculate current battery dump energy; By MCU, the voltage data of R7 upper end is carried out after AD sampling, can pass through MCU 300 processing and identification environment nowadays light intensity; By Intelligent Recognition and the battery dump energy of outside light intensity, carry out PWM control by MCU 300 Comprehensive Control LED output brightness, thereby guarantee LED direction board is indicated work and the effective electric quantity consumption of controlling battery for a long time.
The foregoing is only preferred implementation of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. the electric power management circuit of a New LED road indicator, comprise MCU(300), with MCU(300) chip (400) that is electrically connected, and be electrically connected successively resistance R 14 at output, triode Q2, LED light module, it is characterized in that: at the other end of described LED light module, be electrically connected with successively the resistance R 2 of series connection, resistance R 1, resistance R 2, resistance R 1 forms bleeder circuit, in the circuit being connected with LED light module in resistance R 2, also be connected with triode Q1, fuse FUSE1, resistance R 4, resistance R 5, resistance R 3, the charging circuit that solar cell (100) and the solar panel being connected with solar cell form, described MCU(300) be also connected with light-operated and reset circuit.
2. the electric power management circuit of a kind of New LED road indicator according to claim 1, it is characterized in that: described light-operated and reset circuit is by photo resistance RL1, resistance R 7, capacitor C 4, adjustable resistance R10 parallel connection, is electrically connected composition with resistance R 6 after in parallel.
3. the electric power management circuit of a kind of New LED road indicator according to claim 1, it is characterized in that: in charging circuit, solar cell (100) is electrically connected resistance R 3, resistance R 4 successively, resistance R 4 is in parallel with fuse FUSE1, connecting triode Q1 after in parallel, triode Q1, resistance R 4 negative pole end contact resistance R5.
4. the electric power management circuit of a kind of New LED road indicator according to claim 1, it is characterized in that: described triode Q1 is also electrically connected chargeable lithium cell (500), this chargeable lithium cell (500) electrical connection 7805 circuit of three-terminal voltage-stabilizing integrated (200), the another two ends of 7805 circuit of three-terminal voltage-stabilizing integrated (200) are electrically connected respectively resistance R 8, resistance R 9, described resistance R 9 negative pole ends connect capacitor C 8 and capacitor C 9, and capacitor C 8 is in parallel with capacitor C 9.
5. the electric power management circuit of a kind of New LED road indicator according to claim 4, is characterized in that: described resistance R 8 positive terminals connect LED lamp indicator light module, chargeable lithium cell (500), triode Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420084330.9U CN203748069U (en) | 2014-02-27 | 2014-02-27 | Power management circuit of novel LED road indicating board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420084330.9U CN203748069U (en) | 2014-02-27 | 2014-02-27 | Power management circuit of novel LED road indicating board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203748069U true CN203748069U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420084330.9U Expired - Fee Related CN203748069U (en) | 2014-02-27 | 2014-02-27 | Power management circuit of novel LED road indicating board |
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| CN (1) | CN203748069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548812A (en) * | 2015-12-24 | 2016-05-04 | 广州航海学院 | Flash control device used for fault indicator and method thereof |
-
2014
- 2014-02-27 CN CN201420084330.9U patent/CN203748069U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548812A (en) * | 2015-12-24 | 2016-05-04 | 广州航海学院 | Flash control device used for fault indicator and method thereof |
| CN105548812B (en) * | 2015-12-24 | 2018-11-02 | 广州航海学院 | Flash of light control device and method for fault detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170927 Address after: 518004 Guangdong city of Shenzhen province Luohu District Liantang Industrial Zone 702 building 4 floor west block No. A-1 Patentee after: SHENZHEN PENGCHENG TRANSPORTATION NETWORK CO.,LTD. Address before: 518048 Great China International Trade Plaza, Jintian Road, Shenzhen, Guangdong, Futian District 2605V Patentee before: LINRUN INDUSTRIAL CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |