CN104816670A - Automobile low and high beam control system and method - Google Patents
Automobile low and high beam control system and method Download PDFInfo
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- CN104816670A CN104816670A CN201510274121.XA CN201510274121A CN104816670A CN 104816670 A CN104816670 A CN 104816670A CN 201510274121 A CN201510274121 A CN 201510274121A CN 104816670 A CN104816670 A CN 104816670A
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Abstract
The invention discloses an automobile low and high beam control system and method. The control system comprises a left low beam lamp, a right low beam lamp, a left high beam lamp, a right high beam lamp, an MCU (Microprogrammed Control Unit), an input processing circuit connected to a switching operation signal input port of the MCU, a combination switch connected to the input processing circuit, a CAN (Controller Area Network) transceiver connected to a communication port of the MCU, a first drive circuit connected to two control signal output ports of the MCU, and a second drive circuit connected to another two control signal output ports of the MCU. The left low beam lamp is connected to one of drive signal output ports of the first drive circuit. The left high beam lamp is connected to the other drive signal output port of the first drive circuit. The right low beam lamp is connected to one of drive signal output ports of the second drive circuit. The right high beam lamp is connected to the other drive signal output port of the second drive circuit. The automobile low and high beam control system and method can reduce the probability of complete failure of low and high beam functions and improve the driving safety.
Description
Technical field
The invention belongs to vehicle electric field, be specifically related to that a kind of automobile is near, distance light control system and control method.
Background technology
Along with the fast development of modern automobile technology, running safety has become the emphasis that people pay close attention to.
As shown in Figure 1, existing automobile is near, distance light control system, comprise light modulation 1 in the vicinity, right passing light 2, left country beam 3, right country beam 4, MCU 5, the input processing circuit 6 be connected with the switching operation signal input port 5-A of MCU 5, the combined switch 7 be connected with input processing circuit 6, with the communication port 5-D-1 of MCU 5, the CAN transceiver 10 that 5-D-2 connects, former first driving circuit 12 connected by a control signal output port 5-B of input port 12-B and MCU 5 and former second driving circuit 13 connected by another control signal output port 5-C of input port 13-B and MCU 5, light modulation 1 is connected with a drive singal output port 12-A of former first driving circuit 12 with right passing light 2 in the vicinity, left country beam 3 is connected with a drive singal output port 13-A of former second driving circuit 13 with right country beam 4, combined switch sends switching operation signal to MCU by input processing circuit, the ignition lock gear signal obtained from CAN is sent to MCU by CAN transceiver, MCU carries out Logic judgment: if need to realize low-beam function, then MCU sends control signal to former first driving circuit 12, and former first driving circuit exports high level rear left and right passing light and lights simultaneously, if need to realize road function, then MCU sends control signal to former second driving circuit 13, and former second driving circuit output HIGH voltage rear left and right country beam is lighted simultaneously.There are the following problems for this control system: (1) is connected on same driving element (i.e. former first driving circuit) due to left and right passing light, if former first driving circuit et out of order, then light modulation and right passing light can lose efficacy (namely low-beam function is entirely ineffective) simultaneously in the vicinity; Because left and right country beam is connected on same driving element (i.e. former second driving circuit), if former second driving circuit et out of order, then left country beam and right country beam also can lose efficacy (namely road function is entirely ineffective) simultaneously, and travel safety is lower; (2) first, second driving circuit former adopts relay construction, do not have backfeed loop, control system does not connect combination instrument, if first, second driving circuit former or left and right passing light or left and right country beam et out of order, then cannot remind chaufeur, traffic safety hidden danger is larger.
Summary of the invention
The object of this invention is to provide a kind of near, distance light control system and control method, to reduce near, that road function is entirely ineffective probability, improve travel safety.
Automobile of the present invention is near, distance light control system, the second driving circuit comprising light modulation, right passing light, left country beam, right country beam, MCU, the input processing circuit be connected with the switching operation signal input port of MCU, the combined switch be connected with input processing circuit, the CAN transceiver be connected with the communication port of MCU, the first driving circuit be connected with two control signal output ports of MCU in the vicinity and be connected with another two control signal output ports of MCU; Described light modulation is in the vicinity connected with a drive singal output port of the first driving circuit, and left country beam is connected with another drive singal output port of the first driving circuit; Described right passing light is connected with a drive singal output port of the second driving circuit, and right country beam is connected with another drive singal output port of the second driving circuit; Combined switch sends switching operation signal to MCU by input processing circuit, the ignition lock gear signal obtained from CAN is sent to MCU by CAN transceiver, and MCU controls left and right passing light by first, second driving circuit after comprehensive descision or left and right country beam is lighted/extinguished.
Two feedback signal output mouths of described first driving circuit are connected with two feedback signal input port of MCU, and two feedback signal output mouths of the second driving circuit are connected with another two feedback signal input port of MCU; One combination instrument is connected with CAN transceiver, display failure message.
Adopt the method that above-mentioned automobile is near, distance light control system controls near, distance light, comprising:
Step one, MCU receive the switching operation signal after input processing circuit conversion that combined switch transmits, MCU receives the ignition lock gear signal obtained from CAN that CAN transceiver transmits, MCU receives the diagnostic message of first, second driving circuit feedback, then performs step 2.
Step 2, MCU are according to the switching operation signal received and ignition lock gear signal, and comprehensive descision, the need of lighting left and right passing light, if it is performs step 3; Otherwise, perform step 4.
According to the diagnostic message of feedback, step 3, MCU judge whether first, second driving circuit and left and right passing light exist fault: if first, second driving circuit and left and right passing light all exist fault, then failure message sends to combination instrument to show by CAN transceiver by MCU; If there is not fault in first, second driving circuit and left and right passing light, then MCU outputs a control signal to the first driving circuit, first driving circuit drives light modulation in the vicinity to light, and MCU outputs a control signal to the second driving circuit simultaneously, and the second driving circuit drives right passing light to light; If there is fault in the first driving circuit and/or in the vicinity light modulation, there is not fault in the second driving circuit and right passing light, then MCU outputs a control signal to the second driving circuit, second driving circuit drives right passing light to light, and failure message sends to combination instrument to show by CAN transceiver by MCU simultaneously; If there is not fault in the first driving circuit and in the vicinity light modulation, there is fault in the second driving circuit and/or right passing light, then MCU outputs a control signal to the first driving circuit, first driving circuit drives light modulation in the vicinity to light, and failure message sends to combination instrument to show by CAN transceiver by MCU simultaneously.
Step 4, MCU judge whether to need to light left and right country beam, if it is perform step 5, otherwise return execution step one.
According to the diagnostic message of feedback, step 5, MCU judge whether first, second driving circuit and left and right country beam exist fault: if first, second driving circuit and left and right country beam all exist fault, then failure message sends to combination instrument to show by CAN transceiver by MCU; If there is not fault in first, second driving circuit and left and right country beam, then MCU outputs a control signal to the first driving circuit, first driving circuit drives left country beam to light, and MCU outputs a control signal to the second driving circuit simultaneously, and the second driving circuit drives right country beam to light; If there is fault in the first driving circuit and/or left country beam, there is not fault in the second driving circuit and right country beam, then MCU outputs a control signal to the second driving circuit, second driving circuit drives right country beam to light, and failure message sends to combination instrument to show by CAN transceiver by MCU simultaneously; If there is not fault in the first driving circuit and left country beam, there is fault in the second driving circuit and/or right country beam, then MCU outputs a control signal to the first driving circuit, first driving circuit drives left country beam to light, and failure message sends to combination instrument to show by CAN transceiver by MCU simultaneously.
The present invention compared with prior art has following effect:
Certain driving element (such as the first driving circuit) fault, two that are associated are adhered to separately near, the light source fails (namely light modulation and left country beam lost efficacy in the vicinity) of road function, if but another driving element (i.e. the second driving circuit) is normal, realize near, two other light source of road function normal (i.e. right passing light and right country beam normal), then it still can realize closely, road function, ensure that Emergency use, and when the function on that this driving element (i.e. the first driving circuit) associates, the failure message of this driving element (i.e. the first driving circuit) can be sent to combination instrument display by MCU, remind chaufeur on-call maintenance.
Certain circuit or light source failure (such as right passing light and a line fault thereof, right passing light lost efficacy), if but realize the another one light source normal (namely light modulation is normal) of low-beam function in the vicinity, then it still can realize low-beam function, and when low-beam function starts, the failure message of this circuit or light source can be sent to combination instrument display by MCU, reminds chaufeur on-call maintenance.
Therefore, no matter the some link breaks down in light source, circuit or actuator, it still can ensure closely, road function is emergent realizes, and failure message can be sent to combination instrument display by MCU, remind chaufeur on-call maintenance, which reduce near, that road function is entirely ineffective probability, improve travel safety.
Accompanying drawing explanation
Fig. 1 is that existing automobile is near, the circuit block diagram of distance light control system.
Fig. 2 is circuit block diagram of the present invention.
Fig. 3 is the connection diagram of input processing circuit of the present invention and combined switch and MCU.
Fig. 4 is the first driving circuit figure.
Fig. 5 is control flow chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is elaborated.
Automobile is as shown in Figures 2 to 4 near, distance light control system, comprise light modulation 1 in the vicinity, right passing light 2, left country beam 3, right country beam 4, MCU 5(adopts STM8 series monolithic), the input processing circuit 6 be connected with the switching operation signal input port 5-A of MCU 5, the combined switch 7 be connected with input processing circuit 6, with the communication port 5-D-1 of MCU 5, the CAN transceiver 10 that 5-D-2 connects, the combination instrument 11 be connected with CAN transceiver 10, by input port 8-C, two control signal output port 5-B of 8-D and MCU 5, the first driving circuit 8 that 5-I connects and by input port 9-C, another two control signal output port 5-G of 9-D and MCU 5, the second driving circuit 9 that 5-C connects, light modulation 1 is connected with a drive singal output port 8-A of the first driving circuit 8 in the vicinity, and left country beam 3 is connected with another drive singal output port 8-B of the first driving circuit 8, right passing light 2 is connected with a drive singal output port 9-A of the second driving circuit 9, and right country beam 4 is connected with another drive singal output port 9-B of the second driving circuit 9, two feedback signal output mouth 8-E of the first driving circuit 8, two feedback signal input port 5-J, 5-E of 8-F and MCU 5 connect, and two feedback signal output mouth 9-E of the second driving circuit 9, another two feedback signal input port 5-F, 5-H of 9-F and MCU 5 connect.First, second driving circuit structure is identical, mainly adopts the driving chip based on metal-oxide-semiconductor and peripheral element to be formed (see Fig. 4).Combined switch 7 sends switching operation signal to MCU 5 by input processing circuit 6, the ignition lock gear signal obtained from CAN is sent to MCU 5 by CAN transceiver 10, diagnostic message is fed back to MCU 5 by first, second driving circuit, MCU 5 controls left and right passing light by first, second driving circuit after comprehensive descision or left and right country beam is lighted/extinguished, if there is fault, then failure message sends to combination instrument 11 to show by CAN transceiver 10 by MCU 5.
As shown in Figure 5, adopt the method that above-mentioned automobile is near, distance light control system controls near, distance light, comprising:
Step one, MCU 5 receive the switching operation signal after input processing circuit 6 is changed that combined switch 7 transmits, the ignition lock gear signal obtained from CAN that the CAN transceiver 10 that receives MCU 5 transmits, MCU 5 receives the diagnostic message of first, second driving circuit feedback, then performs step 2.
Step 2, MCU 5 are according to the switching operation signal received and ignition lock gear signal, and comprehensive descision, the need of lighting left and right passing light, if it is performs step 3; Otherwise, perform step 4.
According to the diagnostic message of feedback, step 3, MCU 5 judge whether first, second driving circuit and left and right passing light exist fault and (such as the value of the voltage signal values fed back and MCU storage inside compared, judge that whether this voltage signal values is in normal range): if first, second driving circuit and left and right passing light all exist fault, then these failure messages send to combination instrument 11 to show by CAN transceiver 10 by MCU 5; If there is not fault in first, second driving circuit and left and right passing light, then MCU 5 exports control signal that light modulation in the vicinity lights to the first driving circuit 8, first driving circuit 8 drives light modulation 1 in the vicinity to light, simultaneously MCU 5 exports the control signal that right passing light lights and drives right passing light 2 to light to the second driving circuit 9, second driving circuit 9; If there is fault in the first driving circuit 8 and/or in the vicinity light modulation 1, there is not fault in the second driving circuit 9 and right passing light 2, then MCU 5 exports control signal that right passing light lights to the second driving circuit 9, second driving circuit 9 drives right passing light 2 to light, and simultaneously the failure message of the first driving circuit 8 and/or light modulation 1 in the vicinity sends to combination instrument 11 to show by CAN transceiver 10 by MCU 5; If there is not fault in the first driving circuit 8 and in the vicinity light modulation 1, there is fault in the second driving circuit 9 and/or right passing light 2, then MCU 5 exports control signal that light modulation in the vicinity lights to the first driving circuit 8, first driving circuit 8 drives light modulation 1 in the vicinity to light, and the failure message of the second driving circuit 9 and/or right passing light 2 sends to combination instrument 11 to show by CAN transceiver 10 by MCU simultaneously.
Step 4, MCU 5 judge whether to need to light left and right country beam, if it is perform step 5, otherwise return execution step one.
According to the diagnostic message of feedback, step 5, MCU 5 judge whether first, second driving circuit and left and right country beam exist fault and (such as the value of the voltage signal values fed back and MCU storage inside compared, judge that whether this voltage signal values is in normal range): if first, second driving circuit and left and right country beam all exist fault, then these failure messages send to combination instrument 11 to show by CAN transceiver 10 by MCU 5; If there is not fault in first, second driving circuit and left and right country beam, then MCU 5 exports control signal that left country beam lights to the first driving circuit 8, first driving circuit 8 drives left country beam 3 to light, simultaneously MCU 5 exports the control signal that right country beam lights and drives right country beam 4 to light to the second driving circuit 9, second driving circuit 9; If there is fault in the first driving circuit 8 and/or left country beam 3, there is not fault in the second driving circuit 9 and right country beam 4, then MCU 5 exports control signal that right country beam lights to the second driving circuit 9, second driving circuit 9 drives right country beam 4 to light, and the failure message of the first driving circuit 8 and/or left country beam 3 sends to combination instrument 11 to show by CAN transceiver 10 by MCU 5 simultaneously; If there is not fault in the first driving circuit 8 and left country beam 3, there is fault in the second driving circuit 9 and/or right country beam 4, then MCU 5 exports control signal that left country beam lights to the first driving circuit 8, first driving circuit 8 drives left country beam 3 to light, and the failure message of the second driving circuit 9 and/or right country beam 4 sends to combination instrument 11 to show by CAN transceiver 10 by MCU 5 simultaneously.
Claims (3)
1. an automobile is near, distance light control system, comprise light modulation (1) in the vicinity, right passing light (2), left country beam (3), right country beam (4), MCU(5), the input processing circuit (6) be connected with the switching operation signal input port of MCU, the combined switch (7) be connected with input processing circuit, the CAN transceiver (10) be connected with the communication port of MCU, the first driving circuit (8) be connected with two control signal output ports of MCU and the second driving circuit (9) be connected with another two control signal output ports of MCU, it is characterized in that: described light modulation in the vicinity (1) is connected with a drive singal output port of the first driving circuit (8), left country beam (3) is connected with another drive singal output port of the first driving circuit (8), described right passing light (2) is connected with a drive singal output port of the second driving circuit (9), and right country beam (4) is connected with another drive singal output port of the second driving circuit (9), combined switch sends switching operation signal to MCU by input processing circuit, the ignition lock gear signal obtained from CAN is sent to MCU by CAN transceiver, and MCU controls left and right passing light by first, second driving circuit after comprehensive descision or left and right country beam is lighted/extinguished.
2. near, the distance light control system of automobile according to claim 1, it is characterized in that: two feedback signal output mouths of described first driving circuit (8) are connected with two feedback signal input port of MCU, two feedback signal output mouths of the second driving circuit (9) are connected with another two feedback signal input port of MCU; One combination instrument (11) is connected with CAN transceiver (10), display failure message.
3. adopt the method that automobile according to claim 2 is near, distance light control system controls near, distance light, comprising:
Step one, MCU(5) receive the switching operation signal after input processing circuit (6) conversion that combined switch (7) transmits, MCU receives the ignition lock gear signal obtained from CAN that CAN transceiver (10) transmits, MCU receives the diagnostic message of first, second driving circuit feedback, then performs step 2;
Step 2, MCU(5) according to the switching operation signal received and ignition lock gear signal, comprehensive descision, the need of lighting left and right passing light, if it is performs step 3; Otherwise, perform step 4;
Step 3, MCU(5) judge whether first, second driving circuit and left and right passing light exist fault according to the diagnostic message of feedback: if first, second driving circuit and left and right passing light all exist fault, then failure message sends to combination instrument (11) to show by CAN transceiver (10) by MCU; If there is not fault in first, second driving circuit and left and right passing light, then MCU outputs a control signal to the first driving circuit (8), first driving circuit drives light modulation (1) in the vicinity to light, MCU(5 simultaneously) output a control signal to the second driving circuit (9), the second driving circuit drives right passing light (2) to light; If there is fault in the first driving circuit and/or in the vicinity light modulation, there is not fault in the second driving circuit and right passing light, then MCU(5) output a control signal to the second driving circuit (9), second driving circuit drives right passing light (2) to light, and failure message sends to combination instrument to show by CAN transceiver by MCU simultaneously; If there is not fault in the first driving circuit and in the vicinity light modulation, there is fault in the second driving circuit and/or right passing light, then MCU(5) output a control signal to the first driving circuit (8), first driving circuit drives light modulation (1) in the vicinity to light, and failure message sends to combination instrument to show by CAN transceiver by MCU simultaneously;
Step 4, MCU(5) judge whether to need to light left and right country beam, if it is perform step 5, otherwise return execution step one;
Step 5, MCU(5) judge whether first, second driving circuit and left and right country beam exist fault according to the diagnostic message of feedback: if first, second driving circuit and left and right country beam all exist fault, then failure message sends to combination instrument (11) to show by CAN transceiver (10) by MCU; If there is not fault in first, second driving circuit and left and right country beam, then MCU outputs a control signal to the first driving circuit, first driving circuit (8) drives left country beam (3) to light, MCU(5 simultaneously) output a control signal to the second driving circuit (9), the second driving circuit drives right country beam (4) to light; If there is fault in the first driving circuit and/or left country beam, there is not fault in the second driving circuit and right country beam, then MCU(5) output a control signal to the second driving circuit (9), second driving circuit drives right country beam (4) to light, and failure message sends to combination instrument (11) to show by CAN transceiver (10) by MCU simultaneously; If there is not fault in the first driving circuit and left country beam, there is fault in the second driving circuit and/or right country beam, then MCU(5) output a control signal to the first driving circuit (8), first driving circuit drives left country beam (3) to light, and failure message sends to combination instrument (11) to show by CAN transceiver (10) by MCU simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510274121.XA CN104816670B (en) | 2015-05-27 | 2015-05-27 | Control method of automobile low and high beam control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510274121.XA CN104816670B (en) | 2015-05-27 | 2015-05-27 | Control method of automobile low and high beam control system |
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| Publication Number | Publication Date |
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| CN104816670A true CN104816670A (en) | 2015-08-05 |
| CN104816670B CN104816670B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510274121.XA Active CN104816670B (en) | 2015-05-27 | 2015-05-27 | Control method of automobile low and high beam control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212303A (en) * | 2021-04-19 | 2021-08-06 | 东风柳州汽车有限公司 | Automatic control method and system for vehicle emergency response light system |
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| JPS6015235A (en) * | 1983-07-04 | 1985-01-25 | Sumitomo Electric Ind Ltd | Controller of light |
| US20040240224A1 (en) * | 2003-05-26 | 2004-12-02 | Tai-An Chiang | [power adjustableg headlight system] |
| CN2862582Y (en) * | 2005-12-12 | 2007-01-24 | 天津卡达克汽车高新技术公司 | Light control device for vehicle network system |
| CN202641493U (en) * | 2012-05-18 | 2013-01-02 | 上海同捷科技股份有限公司 | Lighting circuit of car |
| CN203902381U (en) * | 2014-06-05 | 2014-10-29 | 重庆长安铃木汽车有限公司 | High beam and low beam combined control circuit of headlamp |
-
2015
- 2015-05-27 CN CN201510274121.XA patent/CN104816670B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6015235A (en) * | 1983-07-04 | 1985-01-25 | Sumitomo Electric Ind Ltd | Controller of light |
| US20040240224A1 (en) * | 2003-05-26 | 2004-12-02 | Tai-An Chiang | [power adjustableg headlight system] |
| CN2862582Y (en) * | 2005-12-12 | 2007-01-24 | 天津卡达克汽车高新技术公司 | Light control device for vehicle network system |
| CN202641493U (en) * | 2012-05-18 | 2013-01-02 | 上海同捷科技股份有限公司 | Lighting circuit of car |
| CN203902381U (en) * | 2014-06-05 | 2014-10-29 | 重庆长安铃木汽车有限公司 | High beam and low beam combined control circuit of headlamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212303A (en) * | 2021-04-19 | 2021-08-06 | 东风柳州汽车有限公司 | Automatic control method and system for vehicle emergency response light system |
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