CN201555703U - Adaptive headlamp on-line dimming test controller based on LIN bus - Google Patents
Adaptive headlamp on-line dimming test controller based on LIN bus Download PDFInfo
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- CN201555703U CN201555703U CN2009202137855U CN200920213785U CN201555703U CN 201555703 U CN201555703 U CN 201555703U CN 2009202137855 U CN2009202137855 U CN 2009202137855U CN 200920213785 U CN200920213785 U CN 200920213785U CN 201555703 U CN201555703 U CN 201555703U
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- lin bus
- light modulation
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Abstract
The utility model provides an adaptive headlamp on-line dimming test controller based on an LIN bus, which comprises a central control unit, an I/O port control module, an LED nixie tube, an LED indicator light, a keyboard interface unit, an operation panel, a power supply module and an LIN bus communication module, wherein, the central control unit takes a high-speed vehicle-used singlechip as a core; the I/O port control module is connected with the central control unit; the LED nixie tube and the LED indicator light are connected with the central control unit; the keyboard interface unit is connected with the central control unit and used for being connected with a keyboard; the operation panel is connected with the central control unit and provided with a switch for controlling the control state of the central control unit; and the LIN bus communication module is connected with the central control unit and used for being communicated with an ECU (electronic control unit) of an automobile headlamp to be tested through an LIN bus protocol. Therefore, the dimming test control of a headlamp in an AFS (adaptive frontlighting system) can be achieved.
Description
Technical field
The utility model relates to the detection control system of car headlamp luminous intensity distribution quality, is specifically related to the control system based on the online light modulation test of the adaptive front lamp (AFS) of LIN bus.
Background technology
(Adaptive Frontlighting System is to make the dipped headlights optical axis in the horizontal and vertical directions can be automatically and the light servomechanism adjusted of vehicle condition interlock AFS) to self-adaptive headlamp system.It makes the driver can obtain the suitable visual field on the reflective road of bend, broad road surface, climb and fall and ponding, can significantly reduce the incidence of accident thus.At present, numerous America and Europes, Japanese car are made the standard configuration that the commercial city has been considered as the AFS car light medium-to-high grade car, and some domestic car light manufacturers have also finished the development to the AFS production domesticization of some vehicle.
Because the manufacturing of light assembly and installation all have the corresponding standard standard, before dispatching from the factory, all need through strict adjustment to guarantee the light conformance with standard, and have only through the AFS headlamp being carried out steering angle control, online light modulation, the various luminous intensity distribution performances that could realize the AFS car light detect, guarantee product quality, enhance productivity.Therefore the light modulation test controller of design and exploitation AFS headlamp just becomes the important topic of modern car light luminous intensity distribution detection system.
The utility model content
The purpose of this utility model is to provide a kind of adaptive front lamp based on the LIN bus online light modulation test controller, to realize the AFS headlamp of different model is carried out the test and the debugging control of dimming function.
Another purpose of the present utility model is to provide a kind of adaptive front lamp based on the LIN bus online light modulation test controller, by simulating various dimming state with the requirement of realization to the difference detection of the headlamp of same model.
A purpose more of the present utility model is to provide a kind of adaptive front lamp based on the LIN bus online light modulation test controller, by automatic and manual control model and alarm mechanism is provided, make things convenient for the different demands of manual test control and production line Automatic Detection and Control, and directly to embed with industrial computer etc. be the car light luminous intensity distribution quality detecting system of core.
For reaching above-mentioned purpose and other purposes, the online light modulation test controller of adaptive front lamp based on the LIN bus of the present utility model comprises with the speed car single-chip microcomputer being the central control unit of core, the I/O port controlling module that is connected with described central control unit, the LED charactron and the LED light that are connected with described central control unit, be connected with described central control unit and be used to connect the unit keyboard interface of establishing keyboard, be connected with described central control unit and have the guidance panel of switch with control central control unit state of a control, power module, and be connected with described central control unit and be used for the LIN bus communication module that the ECU with car headlamp to be measured communicates by the LIN bus protocol.
Preferable, the model of described single-chip microcomputer can be C8051F530.
Preferable, described central control unit is to have automatically and the unit of manual two kinds of mode of operations.When described central control unit was operated in automatic mode, described I/O port controlling module was connected with industrial computer or Programmable Logic Controller.
The beneficial effects of the utility model are, can directly embed the luminous intensity distribution quality testing that realizes in the car light luminous intensity distribution quality detection apparatus system based on the adaptive front lamp of LIN bus, can satisfy the demand of the online brightness adjustment control of various different model headlamps, can accurately feed back the dimming state of AFS headlamp, speed is fast, the reliability height.
Description of drawings
Fig. 1 is the basic structure synoptic diagram of the online light modulation test controller of the adaptive front lamp based on the LIN bus of the present utility model.
Fig. 2 is the basic framework synoptic diagram that the online light modulation test controller of the adaptive front lamp based on the LIN bus of the present utility model is installed in the automatic luminous intensity distribution quality detecting system of car light.
Fig. 3 is the online light modulation test controller of the adaptive front lamp based on a LIN bus of the present utility model workflow synoptic diagram.
Embodiment
Below with reference to accompanying drawing the online light modulation test controller of adaptive front lamp based on LIN (Local Interconnect Network, local internet) bus of the present utility model is described in detail.
As shown in Figure 1, the online light modulation test controller of the adaptive front lamp based on the LIN bus of the present utility model comprises at least: central control unit, I/O port controlling module, LED charactron and LED light, unit keyboard interface, guidance panel, power module and LIN bus communication module etc.
Described central control unit is a core with the speed car single-chip microcomputer, it has automatically and manual two kinds of mode of operations, it can provide parameter that the interface is set, for the testing staff model and the light modulation parameter of AFS headlamp to be measured are set, to realize the AFS headlamp of different model is carried out the test and the debugging control of dimming function; Simultaneously, also can simulate different dimming state, satisfy the different specific requirements that detect with this according to set light modulation parameter.In the present embodiment, the model of described single-chip microcomputer is C8051F530.
Described I/O port controlling module is connected with described central control unit, and the I/O port that it has is used to connect establishes industrial computer or Programmable Logic Controller (PLC).See also Fig. 2, the online light modulation test controller 6 of described adaptive front lamp based on the LIN bus embeds in the car light luminous intensity distribution quality detection apparatus system 9, and the I/O port 8 of described I/O port controlling module is connected with the core industrial computer 5 of car light luminous intensity distribution quality detection apparatus system 9.Wherein, car light luminous intensity distribution quality detection apparatus system 9 has display screen 3, is used to place the car light mold 4 of headlamp 1 to be measured and lens 2 etc.
Described LED charactron is used for demonstration and is connected with described central control unit with LED light, and described LED charactron and LED light are used to the light modulation direction and light modulation angle or the failure message etc. that show that described central control unit provides.
Described unit keyboard interface is connected with described central control unit, is used to connect establish keyboard, for testing staff's input parameter is set.
Described guidance panel is connected with described central control unit, and has switch, so that the testing staff sends control signal by the switching of by-pass cock, and then controls the state of a control of described central control unit.In the present embodiment, described guidance panel is provided with three switches and is used for selecting state of a control based on the online light modulation test controller of the adaptive front lamp of LIN bus, that is: the left and right sides type of headlamp, light modulation direction and mode of operation.Also have three independent switches respectively corresponding car light light modulation return zero control, left/go up brightness adjustment control and to the right/following brightness adjustment control.
Described power module is used for providing required voltage (unreduced diagram is not drawn all connection lines of power module among Fig. 1) to described central control unit, I/O port controlling module, LED charactron and LED light, unit keyboard interface, guidance panel, power module and LIN bus communication module.
Described LIN bus communication module is connected with described central control unit, is used for communicating by the LIN bus protocol with the electronic control unit (ECU) of car headlamp to be measured.As shown in Figure 2, described LIN bus communication module is connected by the ECU of LIN bus 7 with headlamp 1.
See also Fig. 3, the workflow of the online light modulation test controller of described adaptive front lamp based on the LIN bus is as follows:
System initialization at first, after being power connection, central control unit reads the light modulation parameter that is stored in the built-in FLASH storer automatically, to enter detected state, then central control unit reads the status information of the relevant I/O port that industrial computer 5 provides, with left and right sides type and the light modulation direction (level or vertical) of judging, distinguish headlamp 1 to be measured, thereby upgrade headlamp 1 information to be measured, and enter corresponding work mode (being the automatic or manual pattern).In the present embodiment, be that example illustrates with the automatic operation mode earlier.Then, judge whether to carry out the parameter setting, if then provide relevant parameter the interface to be set, and after the testing staff was by keyboard input relevant parameters, central control unit stored the parameter of input, and the arrival of wait control signal for demonstration.After industrial computer 5 sends control signal, i.e. start detection operation promptly sends handshake message, sets up or the maintenance communications status.Then central control unit status information that industrial computer 5 is sent to becomes the data layout of LIN bus protocol with the light modulation Parameters Transformation based on the FLASH memory built-in of the online light modulation test controller of the adaptive front lamp of LIN bus, it is the LIN message, and send to the ECU of headlamp, ECU is according to the LIN message control headlamp 1 that receives, and dimming state information returned, after central control unit receives the echo message of ECU, whether interpretation it be failure message, if failure message, then carry corresponding failure code to the LED charactron, the LED charactron can show different failure codes, simultaneously, the I/O port is exported fault type to industrial computer, and wherein, failure code comprises: E00---and the front shining lamp adjustment motor is positive stop not; E01---front shining lamp adjustment anisotropy or connection disconnect; E02---receive unknown command etc., central control unit is waited for the wrong input of removing or waiting for new control signal simultaneously.If the echo message that central control unit receives is not a fault information, that is to say that light modulation puts in place, then central control unit sends the current light modulation position of instruction maintenance headlamp, make LED charactron and LED light show current light modulation direction and light modulation angle simultaneously, and return to I/O of industrial computer signal that puts in place.The information that industrial computer returns according to central control unit determines next step dimmer command or luminous intensity distribution to detect content.
In addition, when being operated in manual mode based on the online light modulation test controller of the adaptive front lamp of LIN bus, operating personnel can select state of a control and brightness adjustment control by the switch on the guidance panel.After stirring corresponding switch, central control unit becomes the relevant status information and the light modulation Parameters Transformation of FLASH memory built-in the data layout of LIN bus protocol, and send to the ECU of headlamp, the control car light is finished corresponding light modulation action, accept the dimming state information that ECU returns simultaneously, LED charactron and LED light show current light modulation direction and light modulation angle or failure code.
This shows that the online light modulation test controller of the adaptive front lamp based on the LIN bus of the present utility model can be operated in the automatic or manual mode of operation.When automatic mode, can embed car light luminous intensity distribution quality detection apparatus system based on the online light modulation test controller of the adaptive front lamp of LIN bus, mode with outside input and output (I/O) port is connected with the control core (industrial computer or PLC) of checkout equipment, communication, corresponding light modulation motion control to the AFS headlamp is finished in order according to the control core, receive the brightness adjustment control status information of AFS car light feedback, LED charactron and LED light show current light modulation direction and light modulation angle or failure message simultaneously, and the brightness adjustment control result are reported to the control core of checkout equipment by the I/O port.During manual mode, the state of the switch that is provided with according to guidance panel based on the online light modulation test controller of the adaptive front lamp of LIN bus can be connected with the ECU of headlamp and communicate by letter in that off-line state is independent, simulates the control function under the realization automatic mode.
In sum, the online light modulation test controller of adaptive front lamp based on the LIN bus of the present utility model has simple human-computer interaction interface, by systematic parameter is set, can realize that the AFS headlamp to different model carries out the test and the debugging control of dimming function.Simultaneously, to the headlamp of same model, different parameters also can be set reach the specific requirements that the various dimming state of simulation satisfy different detections.In addition, automatic and manual control model and alarm mechanism also is provided, make things convenient for the different demands of manual test control and production line Automatic Detection and Control, and directly to embed with industrial computer etc. be the car light luminous intensity distribution quality detecting system of core, can be connected with the ECU of headlamp and communicate by letter in that off-line state is independent, realization is tested the light modulation of AFS headlamp and is controlled.
Claims (4)
1. online light modulation test controller of the adaptive front lamp based on the LIN bus, comprise with the speed car single-chip microcomputer being the central control unit of core, the I/O port controlling module that is connected with described central control unit, the LED charactron and the LED light that are connected with described central control unit, be connected with described central control unit and be used to connect the unit keyboard interface of establishing keyboard, be connected with described central control unit and have the guidance panel of switch with control central control unit state of a control, and power module, it is characterized in that also comprising: be connected with described central control unit and be used for the LIN bus communication module that the ECU with car headlamp to be measured communicates by the LIN bus protocol.
2. the online light modulation test controller of the adaptive front lamp based on the LIN bus according to claim 1 is characterized in that: the model of described single-chip microcomputer is C8051F530.
3. the online light modulation test controller of the adaptive front lamp based on the LIN bus according to claim 1 is characterized in that: described central control unit is to have automatically and the unit of manual two kinds of mode of operations.
4. the online light modulation test controller of the adaptive front lamp based on the LIN bus according to claim 3, it is characterized in that: when described central control unit was operated in automatic mode, described I/O port controlling module was connected with industrial computer or Programmable Logic Controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202137855U CN201555703U (en) | 2009-11-18 | 2009-11-18 | Adaptive headlamp on-line dimming test controller based on LIN bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202137855U CN201555703U (en) | 2009-11-18 | 2009-11-18 | Adaptive headlamp on-line dimming test controller based on LIN bus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010050747A1 (en) * | 2010-11-08 | 2012-05-10 | Vishay Electronic Gmbh | Circuit arrangement for operating a light-emitting diode |
| CN102869178A (en) * | 2012-08-30 | 2013-01-09 | 北京德天泉机电设备有限公司 | Locomotive headlamp dimmer |
| CN103234737A (en) * | 2013-04-26 | 2013-08-07 | 上海理工大学 | Detection system of light distribution characteristic of ellipsoid unit and method thereof |
| CN103900800A (en) * | 2014-04-16 | 2014-07-02 | 上海理工大学 | Electric dimming device and car lamp online detecting system |
| CN106596080A (en) * | 2016-12-14 | 2017-04-26 | 北京经纬恒润科技有限公司 | Head light test system |
-
2009
- 2009-11-18 CN CN2009202137855U patent/CN201555703U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010050747A1 (en) * | 2010-11-08 | 2012-05-10 | Vishay Electronic Gmbh | Circuit arrangement for operating a light-emitting diode |
| CN102869178A (en) * | 2012-08-30 | 2013-01-09 | 北京德天泉机电设备有限公司 | Locomotive headlamp dimmer |
| CN103234737A (en) * | 2013-04-26 | 2013-08-07 | 上海理工大学 | Detection system of light distribution characteristic of ellipsoid unit and method thereof |
| CN103234737B (en) * | 2013-04-26 | 2015-06-17 | 上海理工大学 | Detection system of light distribution characteristic of ellipsoid unit and method thereof |
| CN103900800A (en) * | 2014-04-16 | 2014-07-02 | 上海理工大学 | Electric dimming device and car lamp online detecting system |
| CN103900800B (en) * | 2014-04-16 | 2017-03-08 | 上海理工大学 | Electronic light modulating device and car light on-line detecting system |
| CN106596080A (en) * | 2016-12-14 | 2017-04-26 | 北京经纬恒润科技有限公司 | Head light test system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20101118 |