CN105792491A - H4 common-negative electrode decode circuit and H4 headlamp - Google Patents
H4 common-negative electrode decode circuit and H4 headlamp Download PDFInfo
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- CN105792491A CN105792491A CN201410788800.4A CN201410788800A CN105792491A CN 105792491 A CN105792491 A CN 105792491A CN 201410788800 A CN201410788800 A CN 201410788800A CN 105792491 A CN105792491 A CN 105792491A
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- 238000001914 filtration Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 37
- 230000009471 action Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 abstract description 2
- 229910052736 halogen Inorganic materials 0.000 description 7
- 150000002367 halogens Chemical class 0.000 description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000003736 xenon Chemical class 0.000 description 1
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Abstract
The invention relates to the field of H4 headlamps, in particular to an H4 common-negative electrode decode circuit and an H4 headlamp. The H4 common-negative electrode decode circuit comprises a passing light self-inspection circuit, a distance light self-inspection circuit, a passing light power supply circuit, a distance light power supply circuit and a filtering circuit, wherein two ends of the passing light self-inspection circuit are independently connected with the passing light control end and the common end of the decoding circuit; two ends of the distance light self-inspection circuit are independently connected with the distance light control end and the common end of the decoding circuit; two ends of the passing light power supply circuit are independently connected with the passing light control end of the decoding circuit and the input end of the filtering circuit; two ends of the distance light power supply circuit are independently connected with the distance light control end of the decoding circuit and the input end of the filtering circuit; the filtering circuit is connected with the output end of the decoding circuit, and the filtering circuit converts rectangular wave power supply into direct-current power supply; and the self-inspection circuits are used for receiving passing light and distance light control end pulse signals to generate current to carry out self inspection. The H4 common-negative electrode decode circuit can meet the dynamic and static detection, the rectangular wave power supply filtering and the quick switching of passing light and distance light of an H4 headlamp detection circuit.
Description
Technical Field
The invention relates to the field of H4 headlamps, in particular to an H4 common negative decoding circuit and an H4 headlamp.
Background
The H4 front headlight is a single-lamp double-light source, and there are H4 halogen lamp and H4 xenon lamp. The H4 lamp is connected with the original vehicle through a group of three-position connectors. Two light power lines and a common line respectively form a low beam and a high beam power supply circuit. The reflection heights of the low beam and the high beam are different due to the different focal lengths of the light sources, so that the difference between the low beam and the high beam is formed.
The H4 halogen lamp is a single lamp with two filaments connected to three power lines, a common line and low and high beam control lines. H4 xenon lamps are various, and common lamps include H4 telescopic lamps, H4 double-cannon lamps, H4 swinging-angle lamps and H4-xenon-halogen lamps; at present, batteries are mostly adopted for power supply, and the original headlight power line is controlled to switch on and off and switch between high and low beams, so that relay harnesses must be additionally installed in most of H4 xenon lamps at present, the installation is complex, and the harnesses are messy after installation.
With the development of automobile technology and the popularization of vehicle computer self-checking technology, a plurality of self-checking functions of vehicle headlights originally installed as H4 headlights are on the market. For example: BMini, Kaiyue HRV, Scoda crystal Sharp, Gaibo. However, the H4 vehicle type modified xenon lamps with the self-checking function adopt an H4 telescopic lamp, an H4 double-cannon, an H4 swing angle lamp which flickers when the lamp is turned on, and an instrument panel lights a fault lamp; the use of H4-xenon-monohalogen as a low beam or high beam halogen lamp and the addition of a ballast with decoding, but two different types of light sources on the same lamp, results in a shorter life of the entire light source due to the relatively short life of the halogen lamp.
Disclosure of Invention
The invention aims to provide an H4 common negative decoding circuit and an H4 headlamp, which are used for solving the problems that the lamp light is unstable, the circuit design is complex and the service life of a lamp body is influenced in the conventional H4 headlamp modification.
One aspect of the present invention provides an H4 common negative decoding circuit, including: the system comprises a low beam self-checking circuit, a high beam self-checking circuit, a low beam power supply circuit, a high beam power supply circuit and a filtering circuit; wherein, two ends of the low beam self-checking circuit are respectively connected with the low beam control end and the common end of the decoding circuit; two ends of the high beam self-checking circuit are respectively connected with a high beam control end and a public end of the decoding circuit; the two ends of the low-beam power supply loop are respectively connected with the low-beam control end of the decoding circuit and the input end of the filtering loop; two ends of the far-beam power supply circuit are respectively connected with the far-beam control end of the decoding circuit and the input end of the filtering circuit; the filtering loop is connected with the output end of the decoding circuit and used for converting rectangular wave power supply into direct current power supply and absorbing interference generated by high voltage at the moment of lighting the ballast; the near-beam self-checking loop is used for receiving a pulse signal sent by the near-beam control end, so that a normally-on pin of the single-pole double-throw relay, an analog resistor and a diode form the self-checking loop to generate current; the high beam self-checking loop is used for receiving a pulse signal sent by the high beam control end, so that a normally-on pin of the single-pole double-throw relay, the analog resistor and the diode form the self-checking loop to generate current.
In some embodiments, preferably, the low beam power supply circuit includes: and the first diode and the single-pole double-throw relay are connected with the common end of the decoding circuit, when the near-light control end is electrified, the single-pole double-throw relay is closed, and the input end of the filter loop is connected with the output end of the first diode.
In some embodiments, preferably, the high beam power supply circuit includes: and the second diode and the single-pole double-throw relay are connected with the common end of the decoding circuit, when the far-light control end is electrified, the single-pole double-throw relay is closed, and the input end of the filter loop is connected with the output end of the second diode.
In some embodiments, preferably, the first diode and the second diode are used for reverse connection, isolate the near light control end or the far light control end, and prevent errors in the common negative near light control end, the far light control end and the common end.
In some embodiments, preferably, the filter circuit includes: the filter capacitor comprises a first electrolytic capacitor, a second electrolytic capacitor, a magnetic ring coil and the filter capacitor, wherein the first electrolytic capacitor, the second electrolytic capacitor and the filter capacitor are respectively connected with the magnetic ring coil in parallel.
In some embodiments, preferably, the high beam power supply circuit further includes: and the second filter capacitor is used for converting the rectangular power supply wave into direct current power supply and supplying power to the far-beam telescopic action.
In some embodiments, preferably, a negative electrode of the second filter capacitor is connected to a common terminal of the decoding circuit, and a positive electrode of the second filter capacitor is connected to the high beam control terminal.
In some embodiments, preferably, the low beam self-inspection circuit includes: the self-checking circuit comprises a third diode, the analog resistor, a single-pole double-throw relay, wherein the single-pole double-throw relay is in an open state, a normally closed end of the single-pole double-throw relay is connected with a low-beam control end through a fourth diode, and the fourth diode is used for supplying power to the single-pole double-throw relay in low-beam self-checking.
In some embodiments, preferably, the high beam self-checking circuit includes: the high-beam-power-consumption remote-control circuit comprises a fifth diode, a sixth diode, the analog resistor and the single-pole double-throw relay, wherein the single-pole double-throw relay is in an open state, a normally closed end of the single-pole double-throw relay is connected with a high-beam control end through a seventh diode, and the seventh diode is used for supplying power to the single-pole double-throw relay in the high-beam self-inspection.
In another aspect, the present invention provides an H4 headlamp comprising: a lamp, an electronic ballast and the H4 common negative decoding circuit of any one of claims 1-9, wherein the lamp is connected with the electronic ballast, and the electronic ballast is connected with the output end of the H4 headlamp common negative decoding circuit.
The decoding circuit is suitable for the common-negative headlamp, adopts three plugs of the original vehicle to supply power for lighting, designs a low-beam detection circuit and a high-beam detection circuit, receives pulse detection signals sent by a low-beam control end or a high-beam control end, is not enough for a relay to act, generates the same current as that generated by a halogen lamp of the original vehicle, and solves the problem of self-checking and fault light reporting. On the other hand, a low beam power supply loop and a high beam power supply loop are designed to supply power for low beam and high beam, and a filtering loop is added in the power supply to convert the rectangular wave power supply into direct current power supply; the distance light and the near light are freely and quickly switched and do not interfere with each other.
Drawings
Fig. 1 is a schematic diagram of an H4 common negative decoding circuit according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Because the problems of complex circuit design and influence on the service life of a modified lamp in the conventional H4 headlamp modification are solved, the invention provides an H4 common negative decoding circuit and an H4 headlamp.
An H4 common negative decoding circuit, comprising: the system comprises a low beam self-checking circuit, a high beam self-checking circuit, a low beam power supply circuit, a high beam power supply circuit and a filtering circuit; wherein,
two ends of the low beam self-detection circuit are respectively connected with a low beam control end and a common end of the decoding circuit;
two ends of the high beam self-checking circuit are respectively connected with a high beam control end and a public end of the decoding circuit;
the two ends of the low-beam power supply loop are respectively connected with a low-beam control end of the decoding circuit and an input end of the filtering loop;
two ends of the high beam power supply loop are respectively connected with a high beam control end of the decoding circuit and an input end of the filtering loop;
the filtering loop is connected with the output end of the decoding circuit and used for converting rectangular wave power supply into direct current power supply and absorbing interference generated by high voltage at the moment of lighting the ballast;
the near-beam self-checking loop is used for receiving a pulse signal sent by the near-beam control end, so that a normally-on pin of the single-pole double-throw relay, the analog resistor and the diode form a self-checking loop to generate current;
the high beam self-checking circuit is used for receiving a pulse signal sent by the high beam control end, so that a normally-on pin of the single-pole double-throw relay, the analog resistor and the diode form the self-checking circuit to generate current.
An H4 headlamp comprising: the lamp tube, the electronic ballast and the H4 common negative decoding circuit are connected, and the electronic ballast is connected with the output end of the H4 headlamp common negative decoding circuit.
The decoding circuit is suitable for a common-negative headlamp, adopts the original three-plug power supply to light up, designs a near light detection circuit and a far light detection circuit, receives pulse detection signals sent by a near light control end or a far light control end, is not enough for a relay to act, generates current equal to that generated by a halogen lamp of the original vehicle, and solves the problem of self-checking fault light reporting. On the other hand, a low beam power supply loop and a high beam power supply loop are designed to supply power for low beam and high beam, and a filtering loop is added in the power supply to convert the rectangular wave power supply into direct current power supply; the distance light and the near light are freely and quickly switched and do not interfere with each other.
The H4 common negative decoding circuit is specifically described below by some embodiments:
an H4 common negative decoding circuit, as shown in FIG. 1, comprises: the system comprises a low beam self-checking circuit, a high beam self-checking circuit, a low beam power supply circuit, a high beam power supply circuit and a filtering circuit; two ends of the low beam self-detection circuit are respectively connected with a low beam control end and a common end of the decoding circuit; when the near-beam control end is not electrified, the near-beam self-checking loop is in a closed state, and the near-beam self-checking loop receives a pulse signal sent by the near-beam control end, so that a normally-on pin of the single-pole double-throw relay, the analog resistor and the diode form the self-checking loop to generate current. Two ends of the high beam self-checking circuit are respectively connected with a high beam control end and a public end of the decoding circuit; when the far-light control end is not electrified, the far-light self-checking loop is in a closed state, and the far-light self-checking loop receives a pulse signal sent by the far-light control end, so that a normally-open pin of the single-pole double-throw relay, the analog resistor and the diode form the self-checking loop to generate current. The two ends of the low-beam power supply loop are respectively connected with a low-beam control end of the decoding circuit and an input end of the filtering loop; two ends of the high beam power supply loop are respectively connected with a high beam control end of the decoding circuit and an input end of the filtering loop; the filtering loop is connected with the output end of the decoding circuit and used for converting rectangular wave power supply into direct current power supply and absorbing interference generated by high voltage at the moment of lighting the ballast; the low beam power supply circuit comprises: and the first diode and the single-pole double-throw relay are connected with the common end of the decoding circuit, when the near-light control end is electrified, the single-pole double-throw relay is closed, and the input end of the filter circuit is connected with the output end of the first diode. When the near-light control end is electrified, the contact of the single-pole double-throw relay and the near-light loop is closed, the near-light power supply loop is closed, and current is converted into direct current through the filter loop and then is supplied to the outside; when the far-beam control end is electrified, the contact of the single-pole double-throw relay and the far-beam circuit is closed, the far-beam power supply circuit is closed, and the current is converted into direct current through the filter circuit and then is supplied to the outside.
Based on the working principle of the decoding circuit, the specific circuit design is carried out:
when the near-light control end sends out a pulse detection signal, the near-light detection loop starts to work; one end of the low-beam detection loop is connected with a low-beam control end, and is provided with a diode D3, an analog resistor R2, a single-pole double-throw switch K1(12V) and a diode D1, wherein the normally closed end of the single-pole double-throw switch K1 is connected with the common end of the decoding circuit, the current generated by the low-beam detection loop is not enough to enable the single-pole double-throw switch K1 to change the state, and the diode D1 supplies power to the single-pole double-throw switch.
When the far-beam control end sends out a pulse detection signal, the far-beam detection loop starts to work; one end of the high beam detection loop is connected with the high beam control end, and the high beam detection loop is provided with a diode D5, a diode D4, an analog resistor R2, a single-pole double-throw switch K1 and a diode D2, wherein the normally closed end of the single-pole double-throw switch K1 is connected with the common end of the decoding circuit, the current generated by the high beam detection loop is not enough to enable the single-pole double-throw switch K1 to change the state, and the diode D2 supplies power to the single-pole double-throw switch.
After the low-beam control end is electrified, the low-beam power supply circuit starts to work, the 12V lamp is on, and the illumination effect is low beam; one end of the low-beam power supply loop is connected with the low-beam control end, the other end of the low-beam power supply loop is connected with the public end, the low-beam power supply loop is composed of a diode D6 and a single-pole double-throw switch K1, the normally open end of the single-pole double-throw switch is closed, and the filter loop is connected between a diode D6 and the single-pole double-throw switch K1 in series.
After the high beam control end is electrified, the high beam power supply loop starts to work, the 12V lamp is on, and the irradiation effect is high beam; one end of the high beam power supply loop is connected with the high beam control end, the other end of the high beam power supply loop is connected with the public end, the high beam power supply loop is composed of a diode D7 and a single-pole double-throw switch K1, the normally open end of the single-pole double-throw switch is closed, and the filter loop is connected between a diode D7 and the single-pole double-throw switch K1 in series. The high beam power supply circuit supplies power to the H4 headlight through the filter circuit, and on the other hand, the high beam telescopic action is provided after current conversion is carried out through the filter capacitor C5. The anode of the filter capacitor is connected with a diode D5, and the cathode of the filter capacitor is connected with the common terminal.
A filtering circuit, comprising: the decoding circuit comprises an electrolytic capacitor C1, a magnetic coil L1, an electrolytic capacitor C2, a filter capacitor C6 and a filter capacitor C1, wherein the electrolytic capacitor C1, the magnetic coil L1 and the electrolytic capacitor C2 are sequentially connected in parallel, the filter capacitor C6 is connected with the electrolytic capacitor in parallel, the anode and the cathode of the filter capacitor are respectively connected with the output end of the decoding circuit, the electrolytic capacitor C1 and the electrolytic capacitor C2 are respectively charged and discharged, and the filter capacitor converts rectangular wave current into direct current.
The diodes D6 and D7 isolate the far and near light control ends and can prevent the fault of the common positive three plugs. The electrolytic capacitor C1, the magnetic coil L1, the electrolytic capacitor C2 and the filter capacitor C6 form a filter circuit, so that the rectangular wave power supply is converted into direct current to absorb the interference generated by high voltage at the moment of ballast lighting. C5 converts the rectangular wave into DC to provide the far-beam stretching action.
Based on the decoding circuit of the H4 headlight, the invention also designs an H4 headlight, which comprises: the lamp tube is connected with the electronic ballast, and the electronic ballast is connected with the output end of the H4 headlamp common-negative decoding circuit.
The invention has the advantages that: the dynamic and static detection of the H4 car lamp detection circuit can be simultaneously met, and the functions of reducing starting peak current, supplying power and filtering by rectangular waves, rapidly switching far and near light, avoiding time delay and the like are achieved. The three plugs directly supply power, so that a wire harness is not required to be additionally installed, and the installation is convenient.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An H4 common negative decoding circuit, comprising: the system comprises a low beam self-checking circuit, a high beam self-checking circuit, a low beam power supply circuit, a high beam power supply circuit and a filtering circuit; wherein,
two ends of the low-beam self-detection circuit are respectively connected with a low-beam control end and a common end of the decoding circuit;
two ends of the high beam self-checking circuit are respectively connected with a high beam control end and a public end of the decoding circuit;
the two ends of the low-beam power supply loop are respectively connected with the low-beam control end of the decoding circuit and the input end of the filtering loop;
two ends of the far-beam power supply circuit are respectively connected with the far-beam control end of the decoding circuit and the input end of the filtering circuit;
the filtering loop is connected with the output end of the decoding circuit and used for converting rectangular wave power supply into direct current power supply and absorbing interference generated by high voltage at the moment of lighting the ballast;
the near-beam self-checking loop is used for receiving a pulse signal sent by the near-beam control end, so that a normally-on pin of the single-pole double-throw relay, an analog resistor and a diode form the self-checking loop to generate current;
the high beam self-checking loop is used for receiving a pulse signal sent by the high beam control end, so that a normally-on pin of the single-pole double-throw relay, the analog resistor and the diode form the self-checking loop to generate current.
2. The H4 common negative decoding circuit of claim 1, wherein the low beam power supply loop comprises: and the first diode and the single-pole double-throw relay are connected with the common end of the decoding circuit, when the near-light control end is electrified, the single-pole double-throw relay is closed, and the input end of the filter loop is connected with the output end of the first diode.
3. The H4 common negative decoding circuit of claim 2, wherein the high beam power supply loop comprises: and the second diode and the single-pole double-throw relay are connected with the common end of the decoding circuit, when the far-light control end is electrified, the single-pole double-throw relay is closed, and the input end of the filter loop is connected with the output end of the second diode.
4. The H4 codnegative decoding circuit as claimed in claim 3, wherein the first diode and the second diode are used for reverse connection, isolating the near light control terminal or the far light control terminal, and preventing errors in the codnegative near light control terminal, the far light control terminal and the common terminal.
5. The H4 common negative decoding circuit of claim 1, wherein the filtering loop comprises: the filter capacitor comprises a first electrolytic capacitor, a second electrolytic capacitor, a magnetic ring coil and the filter capacitor, wherein the first electrolytic capacitor, the second electrolytic capacitor and the filter capacitor are respectively connected with the magnetic ring coil in parallel.
6. The H4 common negative decoding circuit of claim 5, wherein the high beam supply loop further comprises: and the second filter capacitor is used for converting the rectangular power supply wave into direct current power supply and supplying power to the far-beam telescopic action.
7. The H4 common negative decoding circuit of claim 6, wherein the negative pole of the second filter capacitor is connected to the common terminal of the decoding circuit, and the positive pole is connected to the high beam control terminal.
8. The H4 common negative decoding circuit of any one of claims 1-7, wherein the low beam self-test loop comprises: the self-checking circuit comprises a third diode, the analog resistor, a single-pole double-throw relay, wherein the single-pole double-throw relay is in an open state, a normally closed end of the single-pole double-throw relay is connected with a low-beam control end through a fourth diode, and the fourth diode is used for supplying power to the single-pole double-throw relay in low-beam self-checking.
9. The H4 common negative decoding circuit of any one of claims 1-7, wherein the high beam self-check loop comprises: the high-beam-power-consumption remote-control circuit comprises a fifth diode, a sixth diode, the analog resistor and the single-pole double-throw relay, wherein the single-pole double-throw relay is in an open state, a normally closed end of the single-pole double-throw relay is connected with a high-beam control end through a seventh diode, and the seventh diode is used for supplying power to the single-pole double-throw relay in the high-beam self-inspection.
10. An H4 headlamp comprising: a lamp, an electronic ballast and the H4 common negative decoding circuit of any one of claims 1-9, wherein the lamp is connected with the electronic ballast, and the electronic ballast is connected with the output end of the H4 headlamp common negative decoding circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410788800.4A CN105792491A (en) | 2014-12-16 | 2014-12-16 | H4 common-negative electrode decode circuit and H4 headlamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410788800.4A CN105792491A (en) | 2014-12-16 | 2014-12-16 | H4 common-negative electrode decode circuit and H4 headlamp |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850177A (en) * | 1997-08-21 | 1998-12-15 | Zimmerman; Michael D. | Anti-lock braking system indicator |
| CN1396079A (en) * | 2001-07-18 | 2003-02-12 | 卢功洋 | Emergency lighting controller able to automatically regulate brightness of car headlight |
| CN102267416A (en) * | 2011-05-17 | 2011-12-07 | 毛鹏飞 | System for controlling spot lamp of motor vehicle |
-
2014
- 2014-12-16 CN CN201410788800.4A patent/CN105792491A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850177A (en) * | 1997-08-21 | 1998-12-15 | Zimmerman; Michael D. | Anti-lock braking system indicator |
| CN1396079A (en) * | 2001-07-18 | 2003-02-12 | 卢功洋 | Emergency lighting controller able to automatically regulate brightness of car headlight |
| CN102267416A (en) * | 2011-05-17 | 2011-12-07 | 毛鹏飞 | System for controlling spot lamp of motor vehicle |
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Application publication date: 20160720 |