CN104890573A - Automobile lamp extinguishment forgetting alarm based on constant current protection and logic protection - Google Patents
Automobile lamp extinguishment forgetting alarm based on constant current protection and logic protection Download PDFInfo
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- CN104890573A CN104890573A CN201510317249.XA CN201510317249A CN104890573A CN 104890573 A CN104890573 A CN 104890573A CN 201510317249 A CN201510317249 A CN 201510317249A CN 104890573 A CN104890573 A CN 104890573A
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Abstract
The invention discloses an automobile lamp extinguishment forgetting alarm based on constant current protection and logic protection. The automobile lamp extinguishment forgetting alarm based on the constant current protection and the logic protection is composed of a sound device HA, a control circuit connected with the sound device HA, a photoconductive resistor RL connected with the control circuit, a light beam stimulation type logic amplifying circuit connected with the control circuit and a logic protection emitter coupling amplifying circuit connected with the light beam stimulation type logic amplifying circuit and a negative pole of the sound device HA in series, and is characterized in that a constant current protection circuit is further connected in series between the control circuit and a positive pole of the sound device HA. The automobile lamp extinguishment forgetting alarm based on the constant current protection and the logic protection can automatically send out an alarm when a driver forgets to turn off an automobile lamp, and thereby can effectively eradicate the circumstance that a vehicle-mounted accumulator is exhausted from occurring, and prolongs use life of an automobile bulb and the accumulator to the utmost. Simultaneously, the automobile lamp extinguishment forgetting alarm based on the constant current protection and the logic protection can detect work currents through the constant current protection circuit, and performs adjustments when the work currents are high, and therefore damage to the automobile lamp extinguishment forgetting alarm based on the constant current protection and the logic protection, caused by excess currents, is avoided.
Description
Technical field
The present invention relates to a kind of annunciator, specifically refer to that a kind of automobile lamp based on constant current protection and virtual protection is forgotten to close annunciator.
Background technology
Automobile is current the most widely used a kind of vehicle, but many automobilists forget after often stopping and turn off automobile headlamp, in time restarting automobile next time, the electric energy of Vehicular accumulator cell just approach exhaustion, cannot the situation of start the engine again.In addition, the vehicle of sometimes exercising, daytime opens headlight, and driver is also entirely ignorant of, the service life of reduction car light that not only can be serious, and can shorten the service life of storage battery, is unfavorable for demand energy-conservation at present.
Summary of the invention
The object of the invention is to overcome also do not have on the market at present a kind of can automobilist forget turn off car light after and the defect of device of alarm; not only structure is simple to provide one, and the automobile lamp based on constant current protection and virtual protection that driver can also be reminded in time to turn off headlight is forgotten to close annunciator.
Object of the present invention is achieved through the following technical solutions: a kind of automobile lamp based on constant current protection and virtual protection is forgotten to close annunciator, and it is by sound equipment HA, the control circuit that is connected with this sound equipment HA, the photo resistor RL be connected with control circuit; The beam excitation formula logic amplifying circuit be connected with control circuit; be serially connected in the virtual protection emitter-base bandgap grading manifold type amplifying circuit between beam excitation formula logic amplifying circuit and the negative pole of sound equipment HA, and the constant current protective circuit between the positive pole being serially connected in control circuit and sound equipment HA forms.
Further, described constant current protective circuit is by protect IC U1, aerotron Q5, aerotron Q6, be serially connected in the diode D9 between the COMP pin of protect IC U1 and VREF pin, P pole is connected with the RT pin of protect IC U1, the diode D8 that N pole is then connected with the FB pin of protect IC U1 after resistance R18, one end is connected with the CS pin of protect IC U1, the resistance R19 of other end ground connection, one end is connected with the DVR pin of protect IC U1, the resistance R20 that the other end is then connected with the base stage of aerotron Q5, one end is connected with the collecting electrode of aerotron Q5, the resistance R22 that the other end is then connected with the collecting electrode of aerotron Q6 after resistance R23, one end is connected with the emitter of aerotron Q6, the resistance R21 of other end ground connection, and positive pole is connected with the emitter of aerotron Q6, the polar capacitor C8 that negative pole is then connected with the positive pole of sound equipment HA forms, the N pole of described diode D8 is connected with control circuit, the base stage of aerotron Q6 is connected with the point of connection of resistance R22 with resistance R23, and the grounded emitter of aerotron Q5, the VREF pin of described protect IC U1 is connected with its VCC pin, its GND pin ground connection.
Described control circuit comprises: aerotron Q1, aerotron Q2, one end is connected with the base stage of aerotron Q1, the resistance R1 of other end external automobile motor switch, the resistance R2 that one end is connected with the collecting electrode of aerotron Q1, the other end is connected with automobile lamp switch through diode array group, the resistance R3 that one end is connected with the emitter of aerotron Q1, the other end is connected with the negative pole of sound equipment HA; The base stage of aerotron Q2 is connected with the collecting electrode of aerotron Q1, and the collecting electrode of aerotron Q2 is connected with diode array group, and the emitter of aerotron Q2 is then connected with the N pole of diode D8; Meanwhile, the emitter of aerotron Q2 is also connected with the negative pole of sound equipment HA after light-emitting diode VD1 through resistance R4 in turn; Photo resistor RL is then serially connected between the base stage of aerotron Q1 and the negative pole of sound equipment HA.
This beam excitation formula logic amplifying circuit is primarily of power amplifier P3, NAND gate IC1, NAND gate IC2, NAND gate IC3, negative pole is connected with the in-phase end of power amplifier P3, the polar capacitor C1 of positive pole ground connection after optical diode D3, one end is connected with the positive pole of polar capacitor C1, the resistance R5 of other end ground connection after diode D4, positive pole is connected with the point of connection of diode D4 with resistance R5, the polar capacitor C3 of negative earth, one end is connected with the negative input of NAND gate IC1, the resistance R6 that the other end is connected with the in-phase end of power amplifier P3, be serially connected in the resistance R7 between the end of oppisite phase of power amplifier P3 and mouth, one end is connected with the mouth of NAND gate IC1, the resistance R8 that the other end is connected with the negative input of NAND gate IC3, positive pole is connected with the mouth of NAND gate IC2, the electric capacity C2 that negative pole is connected with the negative input of NAND gate IC3, and one end is connected with the positive pole of polar capacitor C3, the resistance R9 that the other end is connected with the negative input of NAND gate IC2 forms, the electrode input end of described NAND gate IC1 is connected with the end of oppisite phase of power amplifier P3, its mouth is connected with the electrode input end of NAND gate IC2, the electrode input end of NAND gate IC3 is connected with the mouth of power amplifier P3, and the mouth of NAND gate IC3 is then connected with the base stage of aerotron Q1.
Described virtual protection emitter-base bandgap grading manifold type amplifying circuit is primarily of aerotron Q3, aerotron Q4, power amplifier P1, power amplifier P2, be serially connected in the resistance R11 between the end of oppisite phase of power amplifier P1 and mouth, be serially connected in the polar capacitor C6 between the in-phase end of power amplifier P2 and mouth, be serially connected in the resistance R10 between the in-phase end of power amplifier P1 and the collecting electrode of aerotron Q3, be serially connected in the resistance R12 between the collecting electrode of aerotron Q3 and the base stage of aerotron Q4, the electric capacity C5 be in parallel with resistance R12, negative pole is connected with the in-phase end of power amplifier P1, the polar capacitor C4 that positive pole is connected with the emitter of aerotron Q3 after resistance R13, be serially connected in the resistance R14 between the base stage of aerotron Q4 and the positive pole of polar capacitor C4, positive pole is connected with the emitter of aerotron Q4, negative pole is in turn through electric capacity C7 that zener diode D5 is connected with the mouth of power amplifier P1 after resistance R15, P pole is connected with the mouth of power amplifier P2, the diode D6 that N pole is connected with the point of connection of resistance R15 with zener diode D5 after resistance R16 through resistance R17, and P pole is connected with the negative pole of electric capacity C7, the zener diode D7 that N pole is connected with the point of connection of resistance R17 with diode D6 forms, the base stage of described aerotron Q3 is connected with the positive pole of polar capacitor C4, and its emitter is connected with the emitter of aerotron Q4, and its collecting electrode is connected with the end of oppisite phase of power amplifier P1, the collecting electrode of aerotron Q4 is connected with the end of oppisite phase of power amplifier P2, and the in-phase end of power amplifier P2 is connected with the mouth of power amplifier P1, the described positive pole of polar capacitor C4 is connected with the negative input of NAND gate IC2, and resistance R17 is then connected with the negative pole of sound equipment HA with the point of connection of resistance R16.
Described diode array group is formed in parallel by diode D1 and diode D2, and diode D1 after parallel connection and diode D2 is formed with shared N pole and shared P pole jointly, described shared N pole is connected with the collecting electrode of aerotron Q2, shares P pole and is then connected with automobile lamp switch.
Described sound equipment HA is that YMD-12095 type carries source of sound minisize dc sound equipment, and described photo resistor RL is MG44-03 plastic resin-encapsulated photo resistor, and described protect IC U1 is then AP3843CP integrated circuit.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) integral structure of the present invention is comparatively simple, and it makes and very easy to use.
(2) the present invention can give the alarm automatically when driver forgets and turns off automobile lamp, thus effectively can stop the depleted situation generation of Vehicular accumulator cell, farthest extends the service life of automotive bulb and storage battery.
(3) the present invention can be detected working current by constant current protective circuit, then can adjust when electric current is too high, thus protection system self damage by excess current.
(4) the present invention is provided with beam excitation formula logic amplifying circuit, therefore can guarantee overall result of use of the present invention.
Accompanying drawing explanation
Fig. 1 is integral structure schematic diagram of the present invention.
Fig. 2 is virtual protection emitter-base bandgap grading manifold type amplification circuit structure schematic diagram of the present invention.
Fig. 3 is constant current protective circuit structural representation of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention by sound equipment HA, the control circuit that is connected with this sound equipment HA, the photo resistor RL be connected with control circuit; The beam excitation formula logic amplifying circuit be connected with control circuit; be serially connected in the virtual protection emitter-base bandgap grading manifold type amplifying circuit between beam excitation formula logic amplifying circuit and the negative pole of sound equipment HA, and the constant current protective circuit between the positive pole being serially connected in control circuit and sound equipment HA forms.Wherein, sound equipment HA preferentially adopts YMD-12095 type to carry source of sound minisize dc sound equipment and realizes, and photo resistor RL then preferentially adopts MG44-03 plastic resin-encapsulated photo resistor to realize.
Control circuit includes aerotron Q1, aerotron Q2, resistance R1, resistance R2, resistance R3, resistance R4 and diode array group.Wherein, the resistance of resistance R1 is 70K Ω, and its one end is connected with the base stage of aerotron Q1, and its other end is external automobile motor switch then; The resistance of resistance R2 is 1K Ω, and its one end is connected with the collecting electrode of aerotron Q1, and its other end is connected with automobile lamp switch through diode array group; The resistance of resistance R3 is 100 Ω, and its one end is connected with the emitter of aerotron Q1, the other end is connected with the negative pole of sound equipment HA.
The base stage of aerotron Q2 is connected with the collecting electrode of aerotron Q1, and the collecting electrode of aerotron Q2 is then connected with diode array group, and the emitter of aerotron Q2 is then connected with constant current protective circuit.Meanwhile, the emitter of aerotron Q2 is also connected with the negative pole of sound equipment HA after light-emitting diode VD1 through resistance R4 in turn; Photo resistor RL is then serially connected between the base stage of aerotron Q1 and the negative pole of sound equipment HA, and now, the resistance of resistance R4 is 2K Ω.
Described beam excitation formula logic amplifying circuit is primarily of power amplifier P3, NAND gate IC1, NAND gate IC2, NAND gate IC3, negative pole is connected with the in-phase end of power amplifier P3, the polar capacitor C1 of positive pole ground connection after optical diode D3, one end is connected with the positive pole of polar capacitor C1, the resistance R5 of other end ground connection after diode D4, positive pole is connected with the point of connection of diode D4 with resistance R5, the polar capacitor C3 of negative earth, one end is connected with the negative input of NAND gate IC1, the resistance R6 that the other end is connected with the in-phase end of power amplifier P3, be serially connected in the resistance R7 between the end of oppisite phase of power amplifier P3 and mouth, one end is connected with the mouth of NAND gate IC1, the resistance R8 that the other end is connected with the negative input of NAND gate IC3, positive pole is connected with the mouth of NAND gate IC2, the electric capacity C2 that negative pole is connected with the negative input of NAND gate IC3, and one end is connected with the positive pole of polar capacitor C3, the resistance R9 that the other end is connected with the negative input of NAND gate IC2 forms.
The electrode input end of described NAND gate IC1 is connected with the end of oppisite phase of power amplifier P3, its mouth is connected with the electrode input end of NAND gate IC2, the electrode input end of NAND gate IC3 is connected with the mouth of power amplifier P3, and the mouth of NAND gate IC3 is then connected with the base stage of aerotron Q1.
In order to ensure result of use, this diode array group is formed in parallel by diode D1 and diode D2, and diode D1 after parallel connection and diode D2 is formed with shared N pole and shared P pole jointly.So-called common N pole refers to that its N pole is fixed together by diode D1 and diode D2, to form a total N pole; In like manner, so-called common P pole then refers to that its P pole is fixed together by diode D1 and diode D2, to form a total P pole.Now, shared N pole of the present invention is connected with the collecting electrode of aerotron Q2, shares P pole and is then connected with automobile lamp switch.
The structure of described virtual protection emitter-base bandgap grading manifold type amplifying circuit as shown in Figure 2, it is primarily of aerotron Q3, aerotron Q4, power amplifier P1, power amplifier P2, be serially connected in the resistance R11 between the end of oppisite phase of power amplifier P1 and mouth, be serially connected in the polar capacitor C6 between the in-phase end of power amplifier P2 and mouth, be serially connected in the resistance R10 between the in-phase end of power amplifier P1 and the collecting electrode of aerotron Q3, be serially connected in the resistance R12 between the collecting electrode of aerotron Q3 and the base stage of aerotron Q4, the electric capacity C5 be in parallel with resistance R12, negative pole is connected with the in-phase end of power amplifier P1, the polar capacitor C4 that positive pole is connected with the emitter of aerotron Q3 after resistance R13, be serially connected in the resistance R14 between the base stage of aerotron Q4 and the positive pole of polar capacitor C4, positive pole is connected with the emitter of aerotron Q4, negative pole is in turn through electric capacity C7 that zener diode D5 is connected with the mouth of power amplifier P1 after resistance R15, P pole is connected with the mouth of power amplifier P2, the diode D6 that N pole is connected with the point of connection of resistance R15 with zener diode D5 after resistance R16 through resistance R17, and P pole is connected with the negative pole of electric capacity C7, the zener diode D7 that N pole is connected with the point of connection of resistance R17 with diode D6 forms.
The base stage of described aerotron Q3 is connected with the positive pole of polar capacitor C4, and its emitter is connected with the emitter of aerotron Q4, and its collecting electrode is connected with the end of oppisite phase of power amplifier P1; The collecting electrode of aerotron Q4 is connected with the end of oppisite phase of power amplifier P2, and the in-phase end of power amplifier P2 is connected with the mouth of power amplifier P1.Meanwhile, the described positive pole of polar capacitor C4 is connected with the negative input of NAND gate IC2, and resistance R17 is then connected with the negative pole of sound equipment HA with the point of connection of resistance R16.
As shown in Figure 3, it is by protect IC U1, aerotron Q5, aerotron Q6, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, resistance R23, polar capacitor C8 for the structure of constant current protective circuit, and diode D8 and diode D9 forms.
During connection, this diode D9 is serially connected between the COMP pin of protect IC U1 and VREF pin, and the P pole of diode D8 is connected with the RT pin of protect IC U1, its N pole is then connected with the FB pin of protect IC U1 after resistance R18.Wherein, this resistance R18 is that constant current detects resistance; pressure drop on it feeds back to the FB pin of protect IC U1; protect IC U1 then compares according to the height of this feedback voltage and the reference voltage of its inside; thus adjust the pulse duty factor that its DVR pin exports, then can reach the object of constant current thus.
Meanwhile, one end of this resistance R19 is connected with the CS pin of protect IC U1, its other end ground connection, and one end of resistance R20 is connected with the DVR pin of protect IC U1, its other end is then connected with the base stage of aerotron Q5.
One end of resistance R22 is connected with the collecting electrode of aerotron Q5, its other end is then connected with the collecting electrode of aerotron Q6 after resistance R23, one end of resistance R21 is connected with the emitter of aerotron Q6, its other end ground connection, and the positive pole of polar capacitor C8 is connected with the emitter of aerotron Q6, its negative pole is then connected with the positive pole of sound equipment HA.
The N pole of described diode D8 is connected with control circuit; The base stage of aerotron Q6 is connected with the point of connection of resistance R22 with resistance R23, and the grounded emitter of aerotron Q5; The VREF pin of described protect IC U1 is connected with its VCC pin, its GND pin ground connection.In order to reach better protected effect, this protect IC U1 is preferably AP3843CP integrated circuit to realize.
Time by day, because photo resistor RL is subject to natural lighting to be low resistance state, aerotron Q1 ends because base stage is low level.Now, if open by mistake or forget to close car light, then car light both end voltage is loaded into sound equipment HA two ends after diode array resistance.Aerotron Q2 is high level and conducting because of base stage, and light-emitting diode VD1 obtains electroluminescence, and sound equipment HA just gives the alarm, and turns off car light to remind driver.
Time at night, photo resistor RL loses natural lighting and in high resistance state, aerotron Q1 because of base stage be high level and conducting.After opening car light, aerotron Q2 ends because base stage is low level, and now sound equipment HA just can not report to the police.If now turn off engine again, then aerotron Q1 turns off without bias current because of base stage, and aerotron Q2 conducting, now light-emitting diode VD1 and sound equipment HA just gives the alarm, and turns off car light to remind driver.
As mentioned above, just the present invention can well be realized.
Claims (6)
1. the automobile lamp based on constant current protection and virtual protection is forgotten to close an annunciator, and it is by sound equipment HA, the control circuit that is connected with this sound equipment HA, the photo resistor RL be connected with control circuit, the beam excitation formula logic amplifying circuit be connected with control circuit, and the virtual protection emitter-base bandgap grading manifold type amplifying circuit be serially connected between beam excitation formula logic amplifying circuit and the negative pole of sound equipment HA forms, it is characterized in that, between control circuit and the positive pole of sound equipment HA, be also serially connected with constant current protective circuit, described constant current protective circuit is by protect IC U1, aerotron Q5, aerotron Q6, be serially connected in the diode D9 between the COMP pin of protect IC U1 and VREF pin, P pole is connected with the RT pin of protect IC U1, the diode D8 that N pole is then connected with the FB pin of protect IC U1 after resistance R18, one end is connected with the CS pin of protect IC U1, the resistance R19 of other end ground connection, one end is connected with the DVR pin of protect IC U1, the resistance R20 that the other end is then connected with the base stage of aerotron Q5, one end is connected with the collecting electrode of aerotron Q5, the resistance R22 that the other end is then connected with the collecting electrode of aerotron Q6 after resistance R23, one end is connected with the emitter of aerotron Q6, the resistance R21 of other end ground connection, and positive pole is connected with the emitter of aerotron Q6, the polar capacitor C8 that negative pole is then connected with the positive pole of sound equipment HA forms, the N pole of described diode D8 is connected with control circuit, the base stage of aerotron Q6 is connected with the point of connection of resistance R22 with resistance R23, and the grounded emitter of aerotron Q5, the VREF pin of described protect IC U1 is connected with its VCC pin, its GND pin ground connection.
2. a kind of automobile lamp based on constant current protection and virtual protection according to claim 1 is forgotten to close annunciator, it is characterized in that, described control circuit comprises: aerotron Q1, aerotron Q2, one end is connected with the base stage of aerotron Q1, the resistance R1 of other end external automobile motor switch, the resistance R2 that one end is connected with the collecting electrode of aerotron Q1, the other end is connected with automobile lamp switch through diode array group, the resistance R3 that one end is connected with the emitter of aerotron Q1, the other end is connected with the negative pole of sound equipment HA; The base stage of aerotron Q2 is connected with the collecting electrode of aerotron Q1, and the collecting electrode of aerotron Q2 is connected with diode array group, and the emitter of aerotron Q2 is then connected with the N pole of diode D8; Meanwhile, the emitter of aerotron Q2 is also connected with the negative pole of sound equipment HA after light-emitting diode VD1 through resistance R4 in turn; Photo resistor RL is then serially connected between the base stage of aerotron Q1 and the negative pole of sound equipment HA;
This beam excitation formula logic amplifying circuit is primarily of power amplifier P3, NAND gate IC1, NAND gate IC2, NAND gate IC3, negative pole is connected with the in-phase end of power amplifier P3, the polar capacitor C1 of positive pole ground connection after optical diode D3, one end is connected with the positive pole of polar capacitor C1, the resistance R5 of other end ground connection after diode D4, positive pole is connected with the point of connection of diode D4 with resistance R5, the polar capacitor C3 of negative earth, one end is connected with the negative input of NAND gate IC1, the resistance R6 that the other end is connected with the in-phase end of power amplifier P3, be serially connected in the resistance R7 between the end of oppisite phase of power amplifier P3 and mouth, one end is connected with the mouth of NAND gate IC1, the resistance R8 that the other end is connected with the negative input of NAND gate IC3, positive pole is connected with the mouth of NAND gate IC2, the electric capacity C2 that negative pole is connected with the negative input of NAND gate IC3, and one end is connected with the positive pole of polar capacitor C3, the resistance R9 that the other end is connected with the negative input of NAND gate IC2 forms, the electrode input end of described NAND gate IC1 is connected with the end of oppisite phase of power amplifier P3, its mouth is connected with the electrode input end of NAND gate IC2, the electrode input end of NAND gate IC3 is connected with the mouth of power amplifier P3, and the mouth of NAND gate IC3 is then connected with the base stage of aerotron Q1,
Described virtual protection emitter-base bandgap grading manifold type amplifying circuit is primarily of aerotron Q3, aerotron Q4, power amplifier P1, power amplifier P2, be serially connected in the resistance R11 between the end of oppisite phase of power amplifier P1 and mouth, be serially connected in the polar capacitor C6 between the in-phase end of power amplifier P2 and mouth, be serially connected in the resistance R10 between the in-phase end of power amplifier P1 and the collecting electrode of aerotron Q3, be serially connected in the resistance R12 between the collecting electrode of aerotron Q3 and the base stage of aerotron Q4, the electric capacity C5 be in parallel with resistance R12, negative pole is connected with the in-phase end of power amplifier P1, the polar capacitor C4 that positive pole is connected with the emitter of aerotron Q3 after resistance R13, be serially connected in the resistance R14 between the base stage of aerotron Q4 and the positive pole of polar capacitor C4, positive pole is connected with the emitter of aerotron Q4, negative pole is in turn through electric capacity C7 that zener diode D5 is connected with the mouth of power amplifier P1 after resistance R15, P pole is connected with the mouth of power amplifier P2, the diode D6 that N pole is connected with the point of connection of resistance R15 with zener diode D5 after resistance R16 through resistance R17, and P pole is connected with the negative pole of electric capacity C7, the zener diode D7 that N pole is connected with the point of connection of resistance R17 with diode D6 forms, the base stage of described aerotron Q3 is connected with the positive pole of polar capacitor C4, and its emitter is connected with the emitter of aerotron Q4, and its collecting electrode is connected with the end of oppisite phase of power amplifier P1, the collecting electrode of aerotron Q4 is connected with the end of oppisite phase of power amplifier P2, and the in-phase end of power amplifier P2 is connected with the mouth of power amplifier P1, the described positive pole of polar capacitor C4 is connected with the negative input of NAND gate IC2, and resistance R17 is then connected with the negative pole of sound equipment HA with the point of connection of resistance R16.
3. a kind of automobile lamp based on constant current protection and virtual protection according to claim 2 is forgotten to close annunciator; it is characterized in that; described diode array group is formed in parallel by diode D1 and diode D2; and diode D1 after parallel connection and diode D2 is formed with shared N pole and shared P pole jointly; described shared N pole is connected with the collecting electrode of aerotron Q2, shares P pole and is then connected with automobile lamp switch.
4. a kind of automobile lamp based on constant current protection and virtual protection according to claim 3 is forgotten to close annunciator, and it is characterized in that, described sound equipment HA is that YMD-12095 type carries source of sound minisize dc sound equipment.
5. a kind of automobile lamp based on constant current protection and virtual protection according to claim 4 is forgotten to close annunciator, and it is characterized in that, described photo resistor RL is MG44-03 plastic resin-encapsulated photo resistor.
6. a kind of automobile lamp based on constant current protection and virtual protection according to claim 5 is forgotten to close annunciator, and it is characterized in that, described protect IC U1 is AP3843CP integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510317249.XA CN104890573A (en) | 2014-11-28 | 2015-06-10 | Automobile lamp extinguishment forgetting alarm based on constant current protection and logic protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712897.0A CN104442565A (en) | 2014-11-28 | 2014-11-28 | Automobile lamp turn-off forgetting alarm apparatus based on light beam excitation circuit and logic protection circuit |
| CN2014107128970 | 2014-11-28 | ||
| CN201510317249.XA CN104890573A (en) | 2014-11-28 | 2015-06-10 | Automobile lamp extinguishment forgetting alarm based on constant current protection and logic protection |
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| CN104890573A true CN104890573A (en) | 2015-09-09 |
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| CN201410712897.0A Pending CN104442565A (en) | 2014-11-28 | 2014-11-28 | Automobile lamp turn-off forgetting alarm apparatus based on light beam excitation circuit and logic protection circuit |
| CN201510317249.XA Pending CN104890573A (en) | 2014-11-28 | 2015-06-10 | Automobile lamp extinguishment forgetting alarm based on constant current protection and logic protection |
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| JP2004248483A (en) * | 2003-02-10 | 2004-09-02 | Ogi Denso Service:Kk | Protective device against overdischarge of battery |
| CN201721386U (en) * | 2010-07-23 | 2011-01-26 | 陈清尧 | Voice reminder for reminding drivers of turning off headlights of motor vehicles |
| CN202557410U (en) * | 2012-03-29 | 2012-11-28 | 浙江吉利汽车研究院有限公司 | Lighting car lamp alarm device |
| CN202686133U (en) * | 2012-06-06 | 2013-01-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Warning device for preventing driver from forgetting to turn off side lamp of automobile |
| CN104582122A (en) * | 2013-10-29 | 2015-04-29 | 常州星宇车灯股份有限公司 | Overvoltage-controlled LED constant current circuit |
| CN203832345U (en) * | 2013-11-19 | 2014-09-17 | 浙江吉利汽车研究院有限公司 | Device for reminding neglect turn-off of automobile headlamp |
| CN104442565A (en) * | 2014-11-28 | 2015-03-25 | 成都创图科技有限公司 | Automobile lamp turn-off forgetting alarm apparatus based on light beam excitation circuit and logic protection circuit |
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|---|---|
| CN104442565A (en) | 2015-03-25 |
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Application publication date: 20150909 |