Automobile instrument alarming lamp self-checking system and detection method

A technology of automobile instrumentation and self-inspection system, which is applied in the direction of alarms, instruments, electric light circuit layout, etc., to simplify the inspection work, reduce working hours and technical requirements, and save time.

Active Publication Date: 2007-09-12
BOSCH CAR MULTIMEDIA WUHU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a situation has brought a lot of workload to the maintenance personnel, and it i...

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  • Automobile instrument alarming lamp self-checking system and detection method
  • Automobile instrument alarming lamp self-checking system and detection method
  • Automobile instrument alarming lamp self-checking system and detection method

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail;

[0013] Fig. 1 is a kind of block diagram of self-inspection system of automobile meter warning light of the present invention;

[0014] Fig. 2 is a kind of automobile meter alarm lamp self-inspection system structural circuit structural diagram of the present invention;

[0015] Fig. 3 is a graph of voltage drop and current of the red light-emitting diode shown in Fig. 2;

[0016] Fig. 4 is a curve diagram of the voltage drop and current of the white light-emitting diode tube shown in Fig. 2;

[0017] Fig. 5 is the flow chart of the detection method of a kind of automobile meter warning lamp self-inspection system of the present invention;

[0018] In Fig. 1 and Fig. 2, 1. single-chip microcomputer; 2. alarm circuit; 3. detection circuit; 4. memory; 5. light-emitting diode; 6. diagnostic instrument.

[0019] As shown in Fig. 1 and Fig. 2, a k...

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PUM

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Abstract

The present invention discloses a system of self-inspection and a inspecting method for auto meter warning lights, include alarm circuits connected with SCM, power supply connected with each circuit, the alarm lights of the alarm circuits, connect to SCM via detection circuits; The SCM connect with a memory; alarm lights connected with SCM via detection circuit, inspect state of the alarm lights, and send the inspecting result to SCM. Through software and combinational logic circuit for each LED warning lights for data coding state, and storage in external memory, A LED alarming lights using in detection circuit driver will no longer focus on the self-inspection information, also eliminated security risks for the alarm lights shattered. User can read the fault code value through suited diagnostic apparatus, moreover basing list of fault code found material circuitry of instrument fault. Simplify the investigation work, save time; depress working hours and technical requirements of the Vehicle maintenance.

Description

technical field [0001] The invention relates to an automobile instrument, in particular to a self-inspection system and a detection method for an automobile instrument warning light. Background technique [0002] In an ordinary car instrument assembly, since the alarm circuit will only work when a fault occurs, in order to know the state of the warning lights, some important warning lights will be lit for 3 seconds when the car is ignited, and the driver In these 3 seconds, judge whether the warning lights are good or bad by visually observing whether the warning lights are lit. With the continuous development of automotive electronics, there are more and more warning lights on the car instrument, and more and more warning lights are lit during ignition self-check. There are as many as 8 warning lights in the instrument that need to be self-checked when the ignition is fired. Because there are too many warning lights for self-inspection, the driver also needs to pay attent...

Claims

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Application Information

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IPC IPC(8): H05B37/03G08B21/24
CPCY02B20/42Y02B20/40
Inventor 陈泽坚
Owner BOSCH CAR MULTIMEDIA WUHU
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