CN102069751A

CN102069751A - Automatic luminosity-changing device for headlights of automotive vehicle

Info

Publication number: CN102069751A
Application number: CN 200910225709
Authority: CN
Inventors: 赵立
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-23
Filing date: 2009-11-23
Publication date: 2011-05-25
Anticipated expiration: 2029-11-23
Also published as: CN102069751B

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 (which comprises a built-in memory and an analog-digital (AD) converter), 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.Self-propelled vehicle is at night during cruising, the general country beam that adopts throws light on, and when two car intersections, dazzle the eyes for preventing distance light, avoid consequent safety traffic accident, national communication portion is about the self-propelled vehicle security regulations: 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, quality is low, 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

In order to solve existing self-propelled vehicle causes traffic accident when the nighttime meeting because of long switch-on distance light problem, 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 is by mu balanced circuit 1, single chip circuit 2, signal transceiver circuit 3, testing circuit 4, safety instruction circuit 5, the change light executive circuit 6 that contains relay 61, progressive change light control circuit 7 connects to form, wherein the mouth of mu balanced circuit 1 (101) is connected respectively to single chip circuit 2, the working power end of signal transceiver circuit 3 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, one end 612a of the passing light signal detection end of one end and single chip circuit 2 and the open contact 612 of relay 61 links together, one end 611b of the normally closed contact 611 of the country beam signal detection end of the other end and single chip circuit 2 and the input end of progressive change light control circuit 7 and relay 61 links to each other, become the working power end of light executive circuit 6 and progressive change light control circuit 7 and the power supply prompting end of single chip circuit 2 and link together, the mouth of progressive change light control circuit 7 is connected with the common port 611a of relay 61 normally closed contacts 611 and open contact 612.

The present invention with foregoing circuit structure is 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, the power supply test side of above-mentioned single chip circuit 2 and testing circuit 4 with after the working power end that becomes light executive circuit 6 and progressive change light control circuit 7 links to each other, is connected with the power input of passing light 8 and country beam 9 and the stationary contact 112 of self-propelled vehicle ignition lock 11 again.After one end 612a of the open contact of the mouth of the passing light signal detection end of above-mentioned single chip circuit 2 and testing circuit 4 and relay 61 linked to each other, be connected with the mouth of passing light 8 and the static contact 122 of beam deflector switch 12 again.Simultaneously, follow the power output end of country beam 9 to be connected with the input end of progressive change light control circuit 7 and an end 611b of relay 6 normally closed contacts 611 another mouth of testing circuit 4.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 lead 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 lead 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.Connect self-propelled vehicle ignition lock 11, 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 to power supply 10 in the self-propelled vehicle car.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 its varying optical signal, and after some seconds, stopping emission under the running of single chip circuit 2 internal processes to the other side's self-propelled vehicle emission certain frequency of meeting.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 normally closed contact 611 to country beam 9 power supplies and open bright country beam 9.Meanwhile, the signal that progressive change light control circuit 7 is opened country beam acts on single chip circuit 2 and through being judged as high level, after the time (generally can be set at 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 and is given the input end that becomes light executive circuit 6, make relay 61 actions that become in the light executive circuit 6, be that its normally closed contact 611 disconnects and open contact 612 closures, so it is bright that passing light 8 opens, single chip circuit 2 starts the progressive change light path preface of time-delay simultaneously, promptly the series of pulses that increased gradually from its control end output pulse width in some seconds is given the input end of progressive change light control circuit 7, be transformed into country beam voltage through progressive change light control circuit 7 from Nv (Nv into the self-propelled vehicle car in the power line voltage of power supply 10) to 0V, this voltage give country beam 9 make its by bright to dark.Single chip circuit 2 is carried out progressive change light path preface, and whole change photoreduction process can be made as 15S, and wherein to become 0V by Nv be 5S to the voltage on the country beam 9, and ov holds time and is 10S; Single chip circuit 2 is sent control signal discontinuously and is given safety instruction circuit 5 during this, makes its contained LED light be flicker shape (light and shade alternately), to point out as auxiliary security.When country beam 9 complete deepenings and after (15S when being whole meeting becomes photoreduction process finish after) through 10 seconds, the control end of single chip circuit 2 is sent signal and is given the mouth that becomes light executive circuit 6, the state of relay 61 is changed once more, be its normally closed contact 611 closures, open contact 612 disconnects, 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 write down, preserve, delete multiple information as requested, according to establishing the program requirement in the single chip circuit 2, signal transceiver circuit 3 is except that 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 4 high level, and resistance is recorded in the 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, increase if find resistance, system judges that promptly headlight damages, and be advanced into dormant state certainly, this moment signal transceiver circuit 3 neither emission do not receive varying optical signal yet, relay 61 is in release position, 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 give 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 by the internal memory recorded and stored, 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 preface, 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 overtake other vehicles lamp and urgent prompting, in addition, the fixing use country beam of self-propelled vehicle.Can stop the part chaufeur like this and be become after the light, recover rapidly again to use the country beam illumination, guarantee finishing of whole Vehicle during Crossing Event by adjusting headlamp beam switch.Simultaneously, significantly mandatory owing to being had by the change photoreduction process, help this self-propelled vehicle and also initiatively become light.Reach the purpose of both sides' civilization meeting.2. can guarantee chaufeur night travel safety.Self-propelled vehicle was forced to become between the photophase, and passing light is bright entirely, and country beam extinguishes gradually, and whole process vision nature does not have the sudden change sense, guarantees chaufeur night travel safety.Safety instruction circuit 5 LED light that are arranged in operator's compartment simultaneously 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 detect automatically 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 produces relevant action automatically, 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 that 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 discerned automatically, can make things convenient for the inspection work of functional department like this to this area's self-propelled vehicle.

Description of drawings

Fig. 1 is an 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 of the present invention (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, R7, R8, R10, R13, R17 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 1, R2, R4, R5, R6, R14, R15, R16, R22, R23, R11, R18 connects to form, safety instruction circuit (5) is by LED, resistance R 8 connects to form, become light executive circuit (6) by aerotron T1, diode VD, resistance R 12, relay (61) and normally closed contact (611) thereof connect to form with open contact (612), and progressive change light control circuit (7) is by field effect transistor V, aerotron T2, resistance R 19, R20, R21 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, the VCC end of radio receiving transmitting module IC3, the GND port ground connection of the micro controller system IC2 of single chip circuit 2, R11 in IC2 input end and the testing circuit 4, R18 links to each other, all the other IC2 ports respectively with the quantitative data input of radio receiving transmitting module IC3, mouth, transmitting-receiving conversion and control end, 1 of

amplifier ic chip

4,7 pin, resistance R 3, R7, R8, R9, R12, R13, R17, the end of R21 links to each other, the resistance R 21 of single chip circuit 2 is connected with the base stage of the aerotron T2 of progressive change light control circuit 7, in the testing circuit 4 in resistance R 3 and the single chip circuit 2 resistance R 1 connect end altogether and link to each other with an end 612a of the open contact 612 of the relay 61 that becomes light executive circuit 6, resistance R 18 in the testing circuit 4, in R23 and the single chip circuit 2 after the connecting end altogether and field effect transistor V source electrode in the progressive change optical circuit 7 links to each other of resistance R 178, the end 611b with the normally closed contact 611 of the relay 61 that becomes light executive circuit 6 links to each other again.An end that becomes resistance R 7, R10 in resistance R 19 1 ends that connect end and progressive change light control circuit 7 altogether and the single chip circuit 2 of negative pole of the line Bao Yiduan of relay 61 of light executive circuit 6 and diode VD links to each other, the end that connects altogether of the drain electrode of the field effect transistor V of progressive change light control circuit 7 and aerotron T2 links to each other with the normally closed contact 611 of relay 61 and the common port 611a of open contact 612, links to each other with the stationary contact 123 of beam deflector switch 12 again.The model of IC1 among Fig. 2, IC2, IC3 and IC4 can adopt LM78L05, PIC16F676, STR-6 and LM358 respectively, 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 of self-propelled vehicle ignition lock 11, line bag, the diode VD of resistance R 7, R10, R19 and relay 61 are connected together, and be connected with the power input of the stationary contact 112 of self-propelled vehicle ignition lock 11 and passing light 8, country beam 9, be connected with resistance R 1, R3 and relay 61 open contacts, 612 1 ends and with the stationary contact 122 of self-propelled vehicle beam deflector switch 12; Simultaneously, the end that connects altogether with the normally closed contact open contact of field effect transistor V, diode T2 and relay 61 is connected with the stationary contact 123 of beam deflector switch 12.

Referring to Fig. 2.The Battery voltage EC that power supply 10 is implemented in the drawings in the self-propelled vehicle car is 12V, and the voltage of integrated voltage stabilizer IC1 mouth 101 is 5V.When driving the time need be opened passing light, to dipped beam shelves 122, passing light 8 opened bright with 12 dozens of beam deflector switchs, and this moment, micro controller system IC2 judged that its P-1 pin is a 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 normally closed contact 611 to country beam 9 power supplies and open bright.Meanwhile; micro controller system IC2 judges that its P-6 pin is a high level; 0.2 a second back radio receiving transmitting module IC3 then is initially located in the varying optical signal state that receives; 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-5 pin of micro controller system IC2 is in high level, make T2 conducting and relay 61 adhesives, be that its normally closed contact 611 disconnects and open contact 612 closures, so it is bright that passing light 8 opens, micro controller system IC2 starts the progressive change light path preface of time-delay simultaneously, the i.e. series of pulses that P-9 pin output pulse width increases gradually in some second, convert country beam voltage from 12V to 0V to through T2, V, this voltage give country beam 9 make they by bright to dark.Whole change photoreduction process is 15s, and wherein to become 0V by 12V be 5s to the voltage on the country beam 9, the 0V 10S that holds time; Be forced to become in the photoreduction process, if chaufeur becomes country beam into passing light earlier in 15S.Revert to country beam then again, at this moment, micro controller system will continue to finish progressive change photoreduction process; High level appears in this period P-4 pin discontinuously, and LED light is the flicker shape.When country beam 9 complete deepenings and through after 10 seconds kinds, P-5 pin zero setting level ends T1, the state of relay 61 becomes release, i.e. its normally closed contact 611 closures, and its open contact 612 disconnects, 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 that 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 shunt 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 arbitrarily damage one, 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 promptly enters dormant state.LED keeps flicker for a long time simultaneously, and expression has headlight to damage.Self-propelled vehicle is being forced to become in the photoreduction process, if field effect transistor V damage is opened circuit and is caused the P-7 pin of IC2 zero level to occur, or during the 5S-15S that change light carries out, making the P-7 pin of IC2 high level occur owing to fault causes field effect transistor V to end fully, this moment, complete machine also can enter dormant state.System does not promptly launch and does not receive varying optical signal yet, and relay 61 is in release position.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 the cue of receiving breaking dormancy, system recovers the breaking dormancy state again 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), the change light executive circuit (6) that contains relay (61), 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) 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), one end (612a) of the open contact (612) of the passing light signal detection end of one end and single chip circuit (2) and relay (61) links together, one end (611b) of the normally closed contact (611) of the country beam signal detection end of the other end and single chip circuit (2) and the input end of progressive change light control circuit (7) and relay (61) links to each other, become the working power end of light executive circuit (6) and progressive change light control circuit (7) and the power supply prompting end of single chip circuit (2) and link together, the mouth of progressive change light control circuit (7) is connected with the common port (611a) of relay (61) normally closed contact (611) and open contact (612).

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, R7, R8, R10, R13, R17 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 1, R2, R4, R5, R6, R14, R15, R16, R22, R23, R11, R18 connects to form, safety instruction circuit (5) is by LED, resistance R 9 connects to form, become light executive circuit (6) by aerotron T1, diode VD, resistance R 12, relay (61) and normally closed contact (611) thereof connect to form with open contact (612), and progressive change light control circuit (7) is by field effect transistor V, aerotron T2, resistance R 19, R20, R21 connects to form.