Ambient light sensor based on LIN bus and online proving, calibrating and transmitting method
An ambient light sensor and bus technology, applied in the field of ambient light sensors, can solve problems such as inconvenient debugging, difficult sensors, and output consistency, and achieve the effects of ensuring product output consistency, strong anti-interference ability, and good confidentiality
Active Publication Date: 2015-01-21
HUBEI KAIT AUTOMOTIVE ELECTRONICS & ELECTRICAL SYST
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Problems solved by technology
[0003] The traditional sensor design has the following limitations: It is difficult for traditional sensors to achieve output consistency. Due to the discreteness of the component characteristics of each batch of products, there will be differences in product characteristics; at the same time, the traditional sensor adjustment threshold is based on adjusting the resistance. way, so debugging is very inconvenient, it is difficult to adjust the threshold to be consistent
And the traditional sensor can not detect the error occurred in the sensor itself
Method used
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[0038] Such as figure 1 As shown, in an ambient light sensor based on a LIN bus in an embodiment of the present invention, it includes an inductive illumination acquisition module 10, an A / D acquisition module 20, a controller module 50, and a LIN transceiver module 30; the inductive illumination acquisition The module 10 is electrically connected to the A / D acquisition module 20; the controller module 50 is electrically connected to the A / D acquisition module 20 and the LIN transceiver module 30; the LIN transceiver module 30 is connected to an external LIN network.
[0039] The external LIN network includes a LIN bus 40, a host computer 60, and a BCM70 (body control system).
[0040] The inductive illumination acquisition module 10 is used to convert the physical signal of ambient light into an analog voltage signal, and send the analog voltage signal to the A / D acquisition module 20;
[0041] The A / D acquisition module 20 is used for sampling the received analog voltage si...
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The invention provides an ambient light sensor based on an LIN bus. The ambient light sensor comprises an induction illumination collecting module, an A / D collecting module, a controller module and an LIN receiving and transmitting module. The induction illumination collecting module is electrically connected with the A / D collecting module. The controller module is electrically connected with the A / D collecting module and the LIN receiving and transmitting module. The LIN receiving and transmitting module is connected with an external LIN network. According to the ambient light sensor, a sampling value of a digital signal can be calibrated, the consistency of output control information can be achieved, mistakes happening to the sensor can be detected, and the usability of the ambient light sensor of an automobile is improved.
Description
technical field [0001] This design relates to the field of automotive electronic sensors, especially an ambient light sensor based on LIN bus. Background technique [0002] At present, the control of automobile headlights has developed from the initial manual control to the current intelligent control. Manual control is the driver's manual way to turn on and off the headlights, which is inconvenient to use. With the development of automotive electronics technology, many cars now automatically control the switch headlights, which requires a better sensor to realize the detection of external ambient light and data transmission and processing. [0003] The traditional sensor design has the following limitations: It is difficult for traditional sensors to achieve output consistency. Due to the discreteness of the component characteristics of each batch of products, there will be differences in product characteristics; at the same time, the traditional sensor adjustment threshol...
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IPC IPC(8): G01J1/42
Inventor 李鄂胜叶海洋邹昌虎李一鸣
Owner HUBEI KAIT AUTOMOTIVE ELECTRONICS & ELECTRICAL SYST