CN102069752B

CN102069752B - Automatic luminosity-changing device for headlights of automotive vehicle

Info

Publication number: CN102069752B
Application number: CN 200910225710
Authority: CN
Inventors: 赵立
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-23
Filing date: 2009-11-23
Publication date: 2013-01-02
Anticipated expiration: 2029-11-23
Also published as: CN102069752A

Abstract

The invention relates to an automatic luminosity-changing device for headlights of an automotive vehicle, which consists of a voltage-stabilizing circuit (1), a singlechip circuit (2), a signal transmitting and receiving circuit (3), a detection circuit (4), a safety prompting circuit (5), a luminosity-changing executive circuit (6) and a progressive luminosity-changing control circuit (7). When in use, the automatic luminosity-changing device is arranged in an engine hood and a driving cab of the automotive vehicle, and is connected with an ignition switch (11), a luminosity-changing switch (12), a dipped headlight (8) and a far-reaching headlight (9) which are arranged originally. When the two automotive vehicles with the device meet at night, as long as the dipped headlight of one automotive vehicle is opened, the other automotive vehicle which opens the far-reaching headlight against rules is forced to be changed into the dipped headlight automatically; after the dipped headlight is changed, and if the automotive vehicle needs to give an overtaking signal or an emergent prompting signal, the far-reaching headlight still can be used intermittently; and after meeting is finished, the far-reaching headlight is restored automatically. Therefore, dazzle glare caused by the far-reaching headlight during the meeting can be prevented, accidents can be prevented, and the safety driving can be ensured. The automatic luminosity-changing device is convenient to install and reliable in operation, and does not influence other functions of the automotive vehicle.

Description

Automatic device for changing light of front headlight of motor vehicle

Technical field

The present invention relates to a kind of used circuit of illumination optical apparatus of power actuated vehicle, specifically, relate to a kind of automatic device for changing light of front headlight of motor vehicle.

Background technology

Front headlight of motor vehicle possesses distance light, two kinds of illumination functions of dipped beam.When self-propelled vehicle normally travelled at night, the general country beam that adopts throws light on, and when two car intersections, dazzle the eyes for preventing distance light, avoid consequent traffic accidents, national communication section stipulates about automobile safety: during motor-driven vehicle meeting at night, apart outside 150M, the meeting both sides just should initiatively become head lamp the passing light illumination, because self-propelled vehicle is far away, the conversion of dipped beam is manually to be handled by chaufeur, because of the chaufeur carelessness, lacks moral fiber, the reasons such as malice unlatching, current mobility car night safe meeting is unsatisfactory, dazzle the eyes the traffic accident that causes because of country beam night and happen occasionally, be unfavorable for safe driving.

Summary of the invention

Cause the problem of traffic accident when the nighttime meeting because of long switch-on distance light in order to solve existing self-propelled vehicle, purpose of the present invention, be to provide a kind of self-propelled vehicle that forces that country beam is automatically changeb to the automatic device for changing light of front headlight of motor vehicle of passing light, thus the safe driving when guaranteeing nighttime meeting.

Solution of the present invention is as follows.Referring to Fig. 1 electric functional-block diagram of the present invention, the present invention it by mu balanced circuit 1, single chip circuit 2, signal transceiver circuit 3, testing circuit 4, safety instruction circuit 5, become light executive circuit 6, progressive change light control circuit 7 connects to form, wherein the mouth 101 of mu balanced circuit 1 is connected respectively to single chip circuit 2, the working power end of signal transceiver circuit 3 and testing circuit 4 is to provide dc supply, the FPDP of single chip circuit 2 links to each other with control port with the FPDP of signal transceiver circuit 3 respectively with control port, the control port of single chip circuit 2 respectively with become light executive circuit 6, progressive change light control circuit 7, the control port of testing circuit 4 and safety instruction circuit 5 joins, the mouth of testing circuit 4, the mouth of the passing light signal detection end of one end and single chip circuit 2 and change light executive circuit 6 connects together, the other end links to each other with the mouth of progressive change light control circuit 7, becomes the working power end of light executive circuit 6 and the working power end of progressive change light control circuit 7 and connects together.

Has the present invention of foregoing circuit structure when installing and using, the power input of its mu balanced circuit 1 is connected with self-propelled vehicle ignition lock 11 movable contact head ends 111, mouth of above-mentioned testing circuit 4 is connected end altogether with the passing light signal prompt end of single chip circuit 2 be connected with mouth and the power input of the passing light 8 and stationary contact 122 of self-propelled vehicle beam deflector switch 12 that becomes light executive circuit 6, the end that connects altogether of the working power end of above-mentioned change light executive circuit 6 and progressive change light control circuit 7 is connected with another stationary contact 123 of self-propelled vehicle beam deflector switch 12; Simultaneously, another mouth with testing circuit 4 is connected with the mouth of progressive change light control circuit 7 and the power input of country beam 9.Main frame of the present invention can be installed in the motor vehicle engine lid or the operator's compartment gap, only needs associated tracks with head light in self wire and the self-propelled vehicle fuse box etc. to be connected by above-mentioned annexation and gets final product.LED light in the safety instruction circuit 5 then can be drawn with wire separately and is connected to bridge instrumentation dish and place, front windshield slit, like this with regard to unlikely damage instrument panel of motor vehicle.

Principle of work of the present invention is as follows.The prerequisite that principle of work is described is all to have installed automatic device for changing light of front headlight of the present invention on the self-propelled vehicle of two nighttime meetinges.Just to mu balanced circuit 1 power supply, the mouth 101 of mu balanced circuit 1 provides stable dc supply to single chip circuit 2, signal transceiver circuit 3 and testing circuit 4 to power supply 10 in the joining machine motor-car ignition lock 11, motor vehicle.In the time of when driving, need opening passing light 8, the moving contact of self-propelled vehicle beam deflector switch 12 is beaten to 122 dipped beam shelves from 121 neutral gears.Power supply 10 is given passing light 8 power supplies and it is opened bright in the car, the interior power supply 10 of car this moment also acts on the control end of single chip circuit 2, be judged as high level through single chip circuit 2, output signal to signal transceiver circuit 3, make it to the varying optical signal of the other side's self-propelled vehicle emission certain frequency of meeting, and after some seconds, stopping emission under the running of single chip circuit 2 internal processes.When needs are opened country beam 9, then with 12 dozens of beam deflector switchs to 123 distance light shelves, so in the car power supply 10 to become light executive circuit 6, progressive change light control circuit 7 provides dc supply, and simultaneously through the field effect transistor V2 of asymptotic change optical circuit 7 to country beam 9 power supplies and open bright country beam 9.Meanwhile, the signal function that progressive change light control circuit 7 is opened country beam is in single chip circuit 2 and through being judged as high level, after the time (generally can be set as 0.2 second) that its internal processes is set, if this high level is still constant, single chip circuit 2 just outputs signal to signal transceiver circuit 3, signal transceiver circuit 3 is in receives the varying optical signal state.Otherwise, then return initial state, this time-delay of 0.2 second receives varying optical signal, can guarantee self-propelled vehicle whenever all can open off and on country beam 9 (as beat overtake other vehicles and promptly during warning light).After signal transceiver circuit 3 is in the varying optical signal that the other side's self-propelled vehicle of receiving the varying optical signal state and receiving meeting sends, the control end of single chip circuit 2 is sent signal to the input end that becomes light executive circuit 6, make and become field effect transistor V1 conducting in the light executive circuit 6, so it is bright that passing light 8 opens, single chip circuit 2 starts the progressive change light path order of time-delay simultaneously, the series of pulses that namely increases gradually from its control end output pulse width in some second is to progressive change light control circuit 7, be transformed into country beam voltage from Nv (Nv into motor vehicle in the power line voltage of power supply 10) to OV through progressive change light control circuit 7, this voltage give country beam 9 make its by bright to dark.Single chip circuit 2 is carried out progressive change light path order, and whole change photoreduction process can be made as 15S, and wherein to become OV by Nv be 5S to the voltage on the country beam 9, and ov holds time and is 10S; During this single chip circuit 2 discontinuously sending control signal make its contained LED light be flicker shape (light and shade alternately), to point out as auxiliary security to safety instruction circuit 5.When country beam 9 fully dimmed and through 10 seconds after (15S when being whole meeting becomes photoreduction process finish after), the control end of single chip circuit 2 is sent signal to the input end that becomes light executive circuit 6 and progressive change light control circuit 7, make the field effect transistor V1 cut-off that becomes light executive circuit 6, the V2 conducting of progressive change light control circuit 7, so passing light 8 extinguishes, country beam 9 opens bright, and self-propelled vehicle recovers the country beam illumination again.Simultaneously because micro controller system of the present invention contains internal memory, thereby system can record, preserve, delete much information as requested, according to establishing the program requirement in the single chip circuit 2, signal transceiver circuit 3 is except transmitting and receiving the varying optical signal, can also transmit and receive other signal, as: self encrypted message that can will be retained in after receiving cue in the memory device is launched.In addition, because micro controller system contains built-in AD conversion, behind the system boot, when motor-driven vehicle headlight adapter (damage) does not open when bright, under the program indication, can respectively the shunt resistance of passing light 8 and country beam 9 be measured through the built-in AD conversion of micro controller system by the output of the amplifier IC4 in the testing circuit 5 high level, and resistance is recorded in the internal memory preserves, when detecting headlight, under the program indication, need only compare newly surveying the data that kept in electric positive data and the memory device, increase if find positive value, system judges that namely headlight damages, and certainly is advanced into dormant state, this moment signal transceiver circuit 3 neither emission do not receive varying optical signal yet, LED can make alarm in the safety instruction circuit 5.Be in when forcing to become in the photoreduction process when self-propelled vehicle reception varying optical signal, if progressive change light control circuit 7 breaks down, then it can be to 2 one cues of single chip circuit, and according to the internal processes of single chip circuit 2, complete machine also can enter aforesaid dormant state.Above-mentioned dormant state is preserved by the internal memory record, if system receives prompting breaking dormancy status signal, this sleep state information will be deleted by system, but complete machine breaking dormancy state.

The invention has the beneficial effects as follows: the purpose that 1. reaches both sides' civilization meeting by mandatory change light.Because this system adopts single chip machine controlling circuit, this system's everything is by micro controller system plug-in commander, when the self-propelled vehicle that this system is housed is opened country beam and travelled, after receiving varying optical signal, micro controller system is carried out progressive change light path order, and dipped beam opens bright, and distance light extinguishes gradually, become between the photophase (15S), under the program indication, self-propelled vehicle can use country beam in intermittence ground, as: play lamp when overtaking and urgent prompting, in addition, the fixing use country beam of self-propelled vehicle.Can stop like this part chaufeur and be become after the light, recover rapidly again to use the country beam illumination by adjusting headlamp beam switch, guarantee finishing of whole Vehicle during Crossing Event.Simultaneously, significantly mandatory owing to being had by the change photoreduction process, be conducive to this self-propelled vehicle and also initiatively become light.Reach the purpose of both sides' civilization meeting.2. can guarantee driver driving at night safety.Self-propelled vehicle was forced to become between the photophase, and passing light is entirely bright, and country beam extinguishes gradually, and whole process vision nature without the sudden change sense, is guaranteed driver driving at night safety.Safety instruction circuit 5 LED light that are arranged in simultaneously operator's compartment keep high brightness flicker, make safe aid prompting.In addition, micro controller system contains built-in AD conversion in the native system single chip circuit 2, testing circuit 4 contains amplifier, under interlock circuit is supported, can automatically detect headlight and progressive change light control circuit 7 by the SCM program requirement, as finding that headlight damages or progressive change light control circuit 7 breaks down, system can enter dormant state automatically, and by the LED alarm.Guarantee to become the safety of photoreduction process, eliminate safe hidden trouble.3. easy to install.As previously mentioned, this device for changing light need not change the self-propelled vehicle owned circuit when installing, and uses the own power supply of self-propelled vehicle, and all operations is by the own head light beam deflector switch control of self-propelled vehicle.When opening passing light, this device for changing light can be launched varying optical signal, and when opening country beam, this Dim Dimmer can receive varying optical signal, and automatically produces relevant action, and is easy to use.4. have complete emission, reception and writing function.As previously mentioned, because micro controller system contains internal memory in the single chip circuit 2, its signal transceiver circuit 3 is except can receiving the emission varying optical signal, can also receive or launch other signal, after receiving the special cue of sending in the external world, system can launch self encrypted message that is kept in the memory device.Therefore, in certain area, if unified this device of installing of self-propelled vehicle, external system can be by launching cue to self-propelled vehicle, and according to specific self encrypted message that this self-propelled vehicle emits its identity is identified automatically, can make things convenient for like this functional department to the inspecting of this area's self-propelled vehicle.

Description of drawings

Fig. 1 is electric functional-block diagram of the present invention;

Fig. 2 is the schematic diagram of Fig. 1 a kind of physical circuit of the present invention.

The specific embodiment

Referring to Fig. 1 and Fig. 2.Mu balanced circuit 1 of the present invention is made of integrated voltage stabilizer IC1, single chip circuit 2 is by the micro controller system IC2 that contains internal memory and AD conversion, resistance R 3, R9, R15, R16 connects to form, signal transceiver circuit 3 is made of radio receiving transmitting module IC3, testing circuit 4 is by amplifier IC4 (IC4-A, IC4-B), capacitor C 1, C2, resistance R 4, R5, R6, R7, R11, R12, R13, R14, R17, R21 connects to form, safety instruction circuit 5 is by LED, resistance R 10, connect to form, become light executive circuit 6 by field effect transistor V1 aerotron T1, resistance R 1, R2, R8 connects to form, and progressive change light control circuit 7 is by field effect transistor V2, aerotron T2, resistance R 18, R19, R20 connects to form.Wherein the mouth 101 of the integrated voltage stabilizer IC1 of mu balanced circuit 1 is connected respectively to the VCC end of the micro controller system IC2 of single chip circuit 2, VCC end and the resistance R 7 of radio receiving transmitting module IC3, the end of R11, the GND port ground connection of the micro controller system IC2 of single chip circuit 2, R4 in IC2 input end and the testing circuit 4, R13 links to each other, all the other IC2 ports are inputted with the data of radio receiving transmitting module IC3 respectively, mouth, transmitting-receiving conversion and control end, 1 of

amplifier ic chip

4,7 pin, resistance R 8, R3, R9, R10, R18, R15, R16, R17, the end of R21 links to each other, the resistance R 18 of single chip circuit 2 is connected with the base stage of the aerotron T1 of progressive change light control circuit 7, R8 links to each other with the base stage of the aerotron T1 that becomes light executive circuit 6, resistance R 6 in the testing circuit 4, resistance R 3 connects altogether end and links to each other with the field effect transistor V1 drain electrode that becomes light executive circuit 6 in R7 and the single chip circuit 2, resistance R 11 in the testing circuit 4, resistance R 15 connects end altogether with the resistance R 19 in the progressive change optical circuit 7 in R12 and the single chip circuit 2, after field effect transistor V2 source electrode links to each other, again with the field effect transistor V1 source electrode that becomes light executive circuit 6, R1 links to each other.The drain electrode of the field effect transistor V2 of progressive change light control circuit 7, resistance R 21 are connected with the country beam input end.The model of IC1 among Fig. 2, IC2, IC3 and IC4 can adopt respectively LM78L05, PIC16F676, STR-6 and LM358, and is all commercially available.

Fig. 2 embodiment circuit is when installing and using, the power input of its integrated voltage stabilizer IC1 is connected with the movable contact head end 111 of self-propelled vehicle ignition lock 11, the end that connects altogether of the drain electrode of R3, R6, R7 and field effect transistor V1 is connected with the stationary contact 122 of self-propelled vehicle beam deflector switch 12, with the source electrode of field effect transistor V1, V2, the end that connects altogether of resistance R 1, R19, R11, R12, R15 is connected with the stationary contact 123 of self-propelled vehicle beam deflector switch 12; Simultaneously, the drain electrode of field effect transistor V2 and the end that connects altogether of resistance R 21 are connected with the input end of country beam 9.

Referring to Fig. 2.The interior power supply 10 of the motor vehicle in the drawings Battery voltage EC of embodiment is 12V, and the voltage of integrated voltage stabilizer IC1 mouth 101 is 5V.In the time of need opening passing light in when driving, to dipped beam shelves 122, passing light 8 opens bright with 12 dozens of beam deflector switchs, and this moment, micro controller system IC2 judged that its P-4 pin is high level, and radio receiving transmitting module IC3 begins to launch the varying optical signal of 433MHZ, stops emission after 3 seconds.When need are opened country beam 9, with 12 dozens of beam deflector switchs to distance light shelves 123, so EC through field effect transistor V2 to country beam 9 power supplies and open bright.Meanwhile; micro controller system IC2 judges that its P-6 pin is high level; 0.2 radio receiving transmitting module IC3 then is initially located in the varying optical signal state that receives after second; otherwise just return initial state; the time-delay in this 0.2 second receives varying optical signal, can guarantee self-propelled vehicle whenever can intermittently open country beam 9 (as beat overtake other vehicles and promptly during warning light).After radio receiving transmitting module IC3 is in reception varying optical signal state and receives the varying optical signal of 433MHZ, the P-2 pin of micro controller system IC2 is in high level, make T1, V1 conducting, so it is bright that passing light 8 opens, micro controller system IC2 starts the progressive change light path order of time-delay simultaneously, the series of pulses that namely P-5 pin output pulse width increases gradually in some second converts country beam voltage from 12V to OV to through T2, V2, this voltage give country beam 9 make they by bright to secretly.Whole change photoreduction process is 15s, and wherein to become OV by 12V be 5s to the voltage on the country beam 9, the OV 10S that holds time; Become in the photoreduction process being forced to, if chaufeur becomes country beam into passing light first in 15S.Then revert to again country beam, at this moment, micro controller system will continue to finish progressive change photoreduction process; High level appears in this period P-5 pin discontinuously, and LED light is the flicker shape.Fully dimmed and through after 10 seconds kinds when country beam 9, P-2 pin zero setting level makes T1, V1 cut-off, and the P-5 pin sets high level, makes T2, V2 conducting, so passing light 8 extinguishes, country beam 9 opens bright, and self-propelled vehicle recovers far lighting again.Because micro controller system includes internal memory, system is according to the program requirement of micro controller system IC2, radio receiving transmitting module IC3 also can transmit and receive other signal except transmitting and receiving the varying optical signal, and self encrypted message that both can will be kept at after receiving cue in the memory device is launched.The principle of testing circuit is: behind the system boot, when motor-driven vehicle headlight adapter (headlight all damage) does not open when bright, under the SCM program indication, can respectively the resistance of passing light 8 and country beam 9 be measured by the built-in AD conversion of the output of the amplifier integrated package output pin in the testing circuit 4 high level footpath micro controller system, and resistance data is recorded in the micro controller system internal memory preserves, when detecting headlight, under the program indication, the data that kept in new measuring resistance data and the memory device need only be compared, if two headlights in parallel damage one arbitrarily, this group resistance increases and is twice, and old data obviously are not inconsistent in this moment new data and the memory device, and system namely enters dormant state.Simultaneously LED flicker, expression have headlight to damage.Self-propelled vehicle is in forcing the change photoreduction process, if field effect transistor V damages, this moment, complete machine also entered dormant state.System does not namely launch and does not receive varying optical signal yet, the system that is in dormant state still can receive other non-varying optical signal, if receive the inspection cue, system is kept at information in the memory device with emission, if receive the cue of breaking dormancy, system again recovers the breaking dormancy state emission and presses the ability of receiving varying optical signal.

Claims

1. automatic device for changing light of front headlight of motor vehicle, it is characterized in that, it is by mu balanced circuit (1), single chip circuit (2), signal transceiver circuit (3), testing circuit (4), safety instruction circuit (5), become light executive circuit (6), progressive change light control circuit (7) connects to form, wherein the mouth (101) of mu balanced circuit (1) is connected respectively to single chip circuit (2), the working power end of signal transceiver circuit (3) and testing circuit (4) is to provide dc supply, the FPDP of single chip circuit (2) links to each other with control port with the FPDP of signal transceiver circuit (3) respectively with control port, the control port of single chip circuit (2) respectively with become light executive circuit (6), progressive change light control circuit (7), the control port of testing circuit (4) and safety instruction circuit (5) joins, the mouth of testing circuit (4), the passing light signal detection end of one end and single chip circuit (2) connects together, the other end links to each other with the mouth of progressive change light control circuit (7), becomes the working power end of light executive circuit (6) and the working power end of progressive change light control circuit (7) and connects together; Described change light executive circuit (6) is connected to form by field effect transistor V1, aerotron T1, resistance R 1, R2, R8.

2. automatic device for changing light of front headlight of motor vehicle according to claim 1, it is characterized in that, mu balanced circuit (1) is made of integrated voltage stabilizer IC1, single chip circuit (2) is by the micro controller system IC2 that contains internal memory and AD conversion, resistance R 3, R9, R15, R16 connects to form, signal transceiver circuit (3) is made of radio receiving transmitting module IC3, testing circuit (4) is by amplifier IC4 (IC4-A, IC4-B), capacitor C 1, C2, resistance R 4, R5, R6, R7, R11, R12, R13, R14, R17, R21 connects to form, safety instruction circuit (5) is by LED, resistance R 10 connects to form, and progressive change light control circuit (7) is by field effect transistor V2, aerotron T2, resistance R 18, R19, R20 connects to form; Wherein the mouth (101) of the integrated voltage stabilizer IC1 of mu balanced circuit (1) is connected respectively to the VCC end of the micro controller system IC2 of single chip circuit (2), VCC end and the resistance R 7 of radio receiving transmitting module IC3, the end of R11, the GND port ground connection of the micro controller system IC2 of single chip circuit (2), R4 in IC2 input end and the testing circuit (4), R13 links to each other, all the other IC2 ports are inputted with the data of radio receiving transmitting module IC3 respectively, mouth, transmitting-receiving conversion and control end, 1 of amplifier ic chip 4,7 pin, resistance R 8, R3, R9, R10, R18, R15, R16, R17, the end of R21 links to each other, resistance R 18 is connected with the base stage of the aerotron T2 of progressive change light control circuit (7), R8 links to each other with the base stage of the aerotron T1 that becomes light executive circuit (6), resistance R 6 in the testing circuit (4), R7 connects altogether end with the middle resistance R 3 of single chip circuit (2) and links to each other with the field effect transistor V1 drain electrode that becomes light executive circuit (6), resistance R 11 in the testing circuit (4), resistance R 15 connects end altogether with the resistance R 19 in the progressive change optical circuit (7) in R12 and the single chip circuit (2), after field effect transistor V2 source electrode links to each other, again with the field effect transistor V1 source electrode that becomes light executive circuit (6), R1 links to each other, the drain electrode of the field effect transistor V2 of progressive change light control circuit (7), resistance R 21 is connected with the country beam input end.