CN103179735A - Two-sided signal light and drive circuit thereof - Google Patents
Two-sided signal light and drive circuit thereof Download PDFInfo
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- CN103179735A CN103179735A CN2011104417975A CN201110441797A CN103179735A CN 103179735 A CN103179735 A CN 103179735A CN 2011104417975 A CN2011104417975 A CN 2011104417975A CN 201110441797 A CN201110441797 A CN 201110441797A CN 103179735 A CN103179735 A CN 103179735A
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- chip microcomputer
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- switching tube
- signal lamp
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Abstract
The invention discloses a two-sided signal light and a drive circuit thereof. The two-sided signal light comprises an A-side light source and a B-side light source which are composed of a plurality of light-emitting diodes (LEDs), a power supply battery, a signal chip microcomputer (SCM) and a first switching tube, a second switching tube, a touch switch and an electro-acoustic device which are connected with the SCM. The first switching tube and the second switching tube are connected to drive ends of A-side and B-side light sources of the SCM respectively to drive the A-side and B-side light sources. The SCM performs counting according to trigger of the touch switch so as to determine four combined working states of the A-side and B-side light sources, and users can select to open one or two light sources freely. The SCM monitors the voltage of the power supply battery and makes a sound for prompt through the electro-acoustic device when the voltage of the power supply battery is lower than a set value. A buzzer is used for low electricity quantity prompt and visual interference is small.
Description
Technical field
The present invention relates to signal lamp, relate in particular to a kind of structure of double-faced signal lamp.
Background technology
The double-faced signal lamp of existing Portable generally adopts poly-lithium battery as power supply, comprises the parts such as two light-emitting areas and light source, shift knob and low battery capacity indication lamp, has the mounting structure that lamp holder and base coordinate, and battery is arranged in battery cavities.Two light sources consist of by some LEDs, are evenly distributed on the two sides of a PCB, and two light sources adopt same button to carry out switch, and the low LED that adopts of cell voltage indicates.
There are two defectives in the structure of this double-faced signal lamp: two light-emitting areas are bright or go out and can not control respectively simultaneously; Low battery capacity indication lamp is very little, when lamp during with a certain distance from the people people be not easy to see clearly whether light yellow of indicator light, low battery capacity indication signal can not in time be delivered to the people.As seen, be necessary the structure of existing double-faced signal lamp is improved in fact.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that exists for above-mentioned prior art, and a kind of double-faced signal lamp is provided, and can realize that the independent control of two-sided light source also can be guaranteed the transmission of low-voltage cue.
The present invention addresses the above problem the technical scheme that proposes, comprise and propose a kind of two-way signal lamp drive circuit, the B area source that comprises the A area source that formed by some LED and formed by some LED with and supplying cell, single-chip microcomputer and the first switching tube that is connected with this single-chip microcomputer, second switch pipe, hand touch switch and electro-acoustic element; Wherein, this first switching tube, second switch pipe are connected to A area source drive end and the B area source drive end of single-chip microcomputer, and in order to drive this A area source and B area source;
The collector electrode of this first switching tube is connected with the power end of single-chip microcomputer through A area source, the first current-limiting resistance successively; The collector electrode of this second switch pipe is connected with the power end of single-chip microcomputer through B area source, the second current-limiting resistance successively; This first switching tube is connected with the second switch pipe that emitter is in parallel to be connected with the earth terminal of single-chip microcomputer; The input of this single-chip microcomputer is connected to the positive pole of power supply by pull-up resistor, the earth terminal of single-chip microcomputer connects the negative pole of power supply; The input of single-chip microcomputer is the filter capacitor ground connection by touching switch in parallel with hand open in usual also;
This single-chip microcomputer according to the triggering of this hand being touched switch count the high/low level of output control the break-make of the first switching tube, second switch pipe and LED light source bright, go out: trigger for the first time the A area source and light, trigger for the second time the B area source and light, trigger for the third time the A area source and the B area source is lighted simultaneously; The 4th triggering signal A area source and B area source extinguish in the lump;
And during lower than a set point, the intermittent pulse cue of the buzzer drive end of single-chip microcomputer output provides sound prompting by this electro-acoustic element to this single-chip microcomputer at the voltage that this supplying cell detected.
Be serially connected with respectively first between the base stage of this first switching tube and second switch pipe and the A area source drive end of single-chip microcomputer or B area source drive end and drive resistance and the second driving resistance;
This single-chip microcomputer also comprises 1 reference voltage input.
This two-way signal lamp drive circuit also comprises a voltage reference chip, and it has an output, and this output is connected with the reference voltage input of single-chip microcomputer; The reference voltage that the voltage reference chip provides is input to the reference voltage input of single-chip microcomputer.
This single-chip microcomputer also comprises 1 high level output end; This voltage reference chip also has an input, and this input is connected with the high level output end of single-chip microcomputer; The high level that single-chip microcomputer provides is input to the input of voltage reference chip.
Be serially connected with dropping resistor between the high level output end of this single-chip microcomputer and the input of voltage reference chip.
This electro-acoustic element is buzzer; This two-way signal lamp drive circuit also comprise be connected with single-chip microcomputer in order to drive the 3rd switching tube of this buzzer.
The emitter of the 3rd switching tube is connected with the earth terminal of single-chip microcomputer through buzzer; The base stage of the 3rd switching tube is connected with the buzzer drive end of single-chip microcomputer; The collector electrode of the 3rd switching tube is connected with the power end of single-chip microcomputer.
The present invention addresses the above problem another technical scheme that proposes, and comprises proposing a kind of double-faced signal lamp, comprises above-mentioned drive circuit, and described A area source is red, and the B area source is green.
This double-faced signal lamp also comprises base and is arranged on magnet in this base.
Compared with prior art, the beneficial effect that has of double-faced signal lamp of the present invention and drive circuit thereof comprises: the user can choose at random as required and open an area source or two sides light source; And, utilize buzzer sounding at intermittence to make low capacity prompt, the interference that is subject to visual signal is little.
Description of drawings
Fig. 1 is the electrical schematic diagram of double-faced signal lamp of the present invention and drive circuit embodiment thereof.
Embodiment
In order to make those skilled in the art person understand better technical scheme of the present invention, be described in further detail below in conjunction with drawings and Examples.
The basic comprising of double-faced signal lamp of the present invention and drive circuit embodiment thereof is, make electro-acoustic element with a buzzer BU and voltage is provided sound prompting during lower than a set point, control the work of buzzer BU and LED light source at least with the single-chip microcomputer U1 of 5 common I/O ends and an A/D end of convert, and detect the signal of cell voltage and the tactile switch SW of hand by single-chip microcomputer U1.Other port of single-chip microcomputer U1 is not limit.
As shown in Figure 1, the electrical principle of two-way signal lamp drive circuit embodiment.LED light source is divided into two groups, and LED1-LEDn is one group and consists of A area source, LED
n+1-LED
2nFor another group consists of the B area source, two groups of light sources are driven by the first switching tube Q1, second switch pipe Q2 respectively, the collector electrode of the first switching tube Q1 and second switch pipe Q2 is connected with A area source or B area source respectively, and the base stage of the first switching tube Q1 and second switch pipe Q2 is by two output b1, b2 of single-chip microcomputer independent control respectively.
Power supply BT selects lithium battery.The input b0 of single-chip microcomputer U1 is connected to the positive pole of lithium battery, the minus earth of lithium battery by pull-up resistor R6.The input b0 of single-chip microcomputer U1 also touches switch SW ground connection by the hand open in usual in parallel with filter capacitor C1, and hand touches the work that switch SW is controlled double-faced signal lamp, and the triggering signal that hand touches the switch SW connection is low level signal.
This two-way signal lamp drive circuit also comprises a voltage reference chip U2, and voltage reference chip U2 is 431 three-terminal voltage-stabilizings, and its input is connected to the high level output end b3 of single-chip microcomputer U1 by dropping resistor R1.High level output end b3 output high level makes 431 voltage reference chip U2 work, provides a 2.5V reference voltage to be input to the reference voltage input b4 of single-chip microcomputer U1; Single-chip microcomputer U1 makes benchmark with this voltage signal, utilizes the magnitude of voltage of A/D translation function collection power end VCC, namely battery voltage value Vb.
The 3rd switching tube Q3 controls and drives buzzer BU, and its base stage connects the buzzer drive end b5 of single-chip microcomputer U1, and its collector electrode meets the power end VCC of single-chip microcomputer U1; Its emitter is through buzzer BU ground connection.
The first switching tube Q1 and second switch pipe Q2 are respectively used to control two groups of light sources, its emitter earth.The collector electrode of the first switching tube Q1 meets the power end VCC of single-chip microcomputer U1 through A area source, the first current-limiting resistance R2, be serially connected with first between the A area source drive end b1 of its base stage and single-chip microcomputer U1 and drive resistance R 5.The collector electrode of second switch pipe Q2 meets the power end VCC of single-chip microcomputer U1 through B area source, the second current-limiting resistance R3, be serially connected with second between the B area source drive end b2 of its base stage and single-chip microcomputer U1 and drive resistance R 4.Current-limiting resistance R2, R3 have determined respectively to flow through the size of current of A area source and B area source, drive resistance R 4, R5 is respectively the first switching tube Q1 and second switch pipe Q2 provides bias current.
Single-chip microcomputer U1 counts according to the triggering that the opponent touches switch SW, with reference to the operating state programming of four kinds of combinations of following double-faced signal lamp, export high/low level control the break-make of the first switching tube, second switch pipe and LED light source bright, go out:
1. detect the triggering signal of the 1st connection of tactile switch SW in one's hands as the input b0 of single-chip microcomputer U1, A area source drive end b1 just exports high level, the first switching tube Q1 conducting work, A area source (LED1-LEDn) is lighted, while B area source drive end b2 output low level, second switch pipe Q2 cut-off, the B area source extinguishes;
2. detect the triggering signal of the 2nd connection of tactile switch SW in one's hands as the input b0 of single-chip microcomputer U1, B area source drive end b2 just exports high level, second switch pipe Q2 conducting work, B area source (LEDn+1-LED2n) is lighted like this, while A area source drive end b1 output low level, the first switching tube Q1 stopping, the A area source extinguishes;
3. detect the triggering signal of the 3rd connection of tactile switch SW in one's hands as the input b0 of single-chip microcomputer U1, A area source drive end b1 and B area source drive end b2 just export high level simultaneously, the first switching tube Q1, second switch pipe Q2 conducting simultaneously, the two sides light source is lighted simultaneously;
4. detect the triggering signal of tactile switch SW the 4th connection in one's hands as the input b0 of single-chip microcomputer U1, A area source drive end b1 and B area source drive end b2 be the while output low level just, and the first switching tube Q1 and second switch pipe Q2 end simultaneously, and the two sides light source all extinguishes;
5. detect the triggering signal of tactile switch SW in one's hands connection next time as the input b0 of single-chip microcomputer U1, again move in circles successively.
In double-faced signal lamp drive circuit works process, when single-chip microcomputer when cell voltage being detected lower than the rated operational voltage set, indicating that battery electric quantity is about to exhaust, single-chip microcomputer U1 is just from one group of intermittent pulse cue of buzzer drive end b5 output, the 3rd switching tube Q3 is operated in the state of intermittent conduction, buzzer BU will send the alarm sound at set intervals like this, and the user hears that prompt tone namely known the battery electric quantity deficiency.
The electric part of signal lamp as mentioned above, wherein two light-emitting areas can be the same colors, can be also different colors, color does not limit yet.
The double-faced signal lamp that utilizes the present invention to make, the user can choose at random as required and open the one or both sides light source; The battery low-electricity quantity cue of buzzer BU can in time pass to the user, and the interference that is subject to distance and other visual signals is very little.
The light source one side of double-faced signal lamp embodiment of the present invention is red, and one side is green.Buzzer BU is welded on above wiring board, and wiring board and battery all are contained in the lamp chamber, and the lamp chamber is shorter, can alleviate the total weight of light fixture.The base orlop is placed with magnet, is convenient to absorption and installs.
Foregoing is only preferred embodiment of the present invention, is not the present invention is carried out the scope restriction.Those skilled in the art can carry out corresponding flexible or modification very easily according to main design of the present invention and spirit.Therefore protection scope of the present invention should be as the criterion with the covering scope of claim.
Claims (10)
1., a kind of two-way signal lamp drive circuit, it is characterized in that, comprise: the A area source that is formed by some LED and the B area source that formed by some LED with and supplying cell, single-chip microcomputer and the first switching tube that is connected with this single-chip microcomputer, second switch pipe, hand touch switch and electro-acoustic element; Wherein, this first switching tube, second switch pipe are connected to A area source drive end and the B area source drive end of single-chip microcomputer, and in order to drive this A area source and B area source;
The collector electrode of this first switching tube is connected with the power end of single-chip microcomputer through A area source, the first current-limiting resistance successively; The collector electrode of this second switch pipe is connected with the power end of single-chip microcomputer through B area source, the second current-limiting resistance successively; This first switching tube is connected with the second switch pipe that emitter is in parallel to be connected with the earth terminal of single-chip microcomputer; The input of this single-chip microcomputer is connected to the positive pole of power supply by pull-up resistor, the earth terminal of single-chip microcomputer connects the negative pole of power supply; The input of single-chip microcomputer is the filter capacitor ground connection by touching switch in parallel with hand open in usual also;
This single-chip microcomputer according to the triggering of this hand being touched switch count the high/low level of output control the break-make of the first switching tube, second switch pipe and LED light source bright, go out: trigger for the first time the A area source and light, trigger for the second time the B area source and light, trigger for the third time the A area source and the B area source is lighted simultaneously; The 4th triggering signal A area source and B area source extinguish in the lump;
And during lower than a set point, the intermittent pulse cue of the buzzer drive end of single-chip microcomputer output provides sound prompting by this electro-acoustic element to this single-chip microcomputer at the voltage that this supplying cell detected.
2. according to two-way signal lamp drive circuit claimed in claim 1, it is characterized in that, this first switching tube is triode, is serially connected with first between the A area source drive end of its base stage and single-chip microcomputer and drives resistance; This second switch pipe is triode, is serially connected with second between the B area source drive end of its base stage and single-chip microcomputer and drives resistance.
3. according to two-way signal lamp drive circuit claimed in claim 2, it is characterized in that, this single-chip microcomputer also comprises 1 reference voltage input.
4. according to two-way signal lamp drive circuit claimed in claim 3, it is characterized in that, this two-way signal lamp drive circuit also comprises a voltage reference chip, and it has an output, and this output is connected with the reference voltage input of single-chip microcomputer; The reference voltage that the voltage reference chip provides is input to the reference voltage input of single-chip microcomputer.
5. according to two-way signal lamp drive circuit claimed in claim 4, it is characterized in that, this single-chip microcomputer also comprises 1 high level output end; This voltage reference chip also has an input, and this input is connected with the high level output end of single-chip microcomputer; The high level that single-chip microcomputer provides is input to the input of voltage reference chip.
6. according to two-way signal lamp drive circuit claimed in claim 5, it is characterized in that, be serially connected with dropping resistor between the high level output end of this single-chip microcomputer and the input of voltage reference chip.
7. according to two-way signal lamp drive circuit claimed in claim 6, it is characterized in that, this electro-acoustic element is buzzer; This two-way signal lamp drive circuit also comprise be connected with single-chip microcomputer in order to drive the 3rd switching tube of this buzzer.
8. according to two-way signal lamp drive circuit claimed in claim 7, it is characterized in that, the 3rd switching tube is triode, and its emitter is connected with the earth terminal of single-chip microcomputer through buzzer; The base stage of the 3rd switching tube is connected with the buzzer drive end of single-chip microcomputer; The collector electrode of the 3rd switching tube is connected with the power end of single-chip microcomputer.
9. a double-faced signal lamp, is characterized in that, comprises the described drive circuit of claim 1 to 8, and described A area source is red, and the B area source is green.
10. according to double-faced signal lamp claimed in claim 9, it is characterized in that, this double-faced signal lamp also comprises base and is arranged on magnet in this base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110441797.5A CN103179735B (en) | 2011-12-26 | 2011-12-26 | Double-faced signal lamp and drive circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110441797.5A CN103179735B (en) | 2011-12-26 | 2011-12-26 | Double-faced signal lamp and drive circuit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103179735A true CN103179735A (en) | 2013-06-26 |
| CN103179735B CN103179735B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110441797.5A Expired - Fee Related CN103179735B (en) | 2011-12-26 | 2011-12-26 | Double-faced signal lamp and drive circuit thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582170A (en) * | 2014-12-29 | 2015-04-29 | 浙江欧易新能源有限公司 | Control method for color-temperature-changing LED light source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296044Y (en) * | 1997-04-08 | 1998-10-28 | 吴天文 | IC card charging device for water supply |
| CN201571034U (en) * | 2009-12-22 | 2010-09-01 | 吴东发 | Electronic section switch |
| EP2400817A1 (en) * | 2010-06-25 | 2011-12-28 | Chao-Li Kuwu | Color-temperature adjustable lighting device |
-
2011
- 2011-12-26 CN CN201110441797.5A patent/CN103179735B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296044Y (en) * | 1997-04-08 | 1998-10-28 | 吴天文 | IC card charging device for water supply |
| CN201571034U (en) * | 2009-12-22 | 2010-09-01 | 吴东发 | Electronic section switch |
| EP2400817A1 (en) * | 2010-06-25 | 2011-12-28 | Chao-Li Kuwu | Color-temperature adjustable lighting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582170A (en) * | 2014-12-29 | 2015-04-29 | 浙江欧易新能源有限公司 | Control method for color-temperature-changing LED light source |
| CN104582170B (en) * | 2014-12-29 | 2017-03-15 | 浙江欧易新能源有限公司 | A kind of control method of color temperature LED light source |
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| Publication number | Publication date |
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| CN103179735B (en) | 2016-06-22 |
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