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Power supply device and power supply method of vehicle-mounted electronic device

A technology for in-vehicle electronics and electronic equipment, applied in emergency protection circuit devices, protection against overvoltage, protection against undervoltage or no voltage, etc., can solve the problem of unreliable and damaged automotive electronic equipment , damage to the vehicle electronic equipment system, etc.

Active Publication Date: 2013-11-13
AEROSPACE INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Crosstalk interference is that the interference signal generated on the car is transmitted to the on-board electronic equipment through various connecting lines, so that the on-board electronic equipment cannot work reliably
The interference signal is one of the main ways to interfere with the vehicle-mounted equipment through the power line. The light of the above-mentioned interference signal will cause the data of the vehicle-mounted electronic equipment to be inaccurate or lost, and cannot work normally reliably, and seriously cause damage to the vehicle-mounted electronic equipment.
[0004] Now there are many voltage regulator chips for automotive power supplies, but the protection measures are not comprehensive enough.
The worse the condition of the vehicle, the stronger the crosstalk interference. It often occurs that the power supply of the vehicle electronic equipment is damaged due to insufficient protection measures for the voltage regulator chip of the vehicle power supply, and the entire system of the vehicle electronic equipment is damaged due to the damage of the power supply of the vehicle electronic equipment.

Method used

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  • Power supply device and power supply method of vehicle-mounted electronic device
  • Power supply device and power supply method of vehicle-mounted electronic device
  • Power supply device and power supply method of vehicle-mounted electronic device

Examples

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Embodiment 1

[0022] The embodiment of the present invention provides a power supply device for vehicle-mounted electronic equipment aiming at automobile crosstalk interference, and its specific structure is as follows: figure 1 As shown, it includes: a vehicle power supply unit 11, a voltage detection protection unit 12, an electronic switch unit 13,

[0023] The vehicle power supply unit 11 is connected with a voltage detection protection unit and an electronic switch unit. It is used to output voltage to the voltage detection protection unit and electronic switch unit, which can be realized by the vehicle battery.

[0024] The voltage detection and protection unit 12 is connected with the vehicle power supply unit and the electronic switch unit. It is used to detect the voltage output from the on-board power supply unit, and judge whether the detected voltage value is lower than the set low voltage threshold or higher than the set high voltage threshold, and if so, report to The electr...

Embodiment 2

[0041] This embodiment provides a kind of above-mentioned figure 2 The specific implementation circuit diagram of the power supply device of the vehicle-mounted electronic equipment shown is as follows: image 3 As shown, including: vehicle power supply, power input filter and protection circuit, car ACC key door switch control circuit, voltage undervoltage trigger circuit, voltage overvoltage trigger circuit, electronic switch circuit, power supply voltage stabilization circuit and power failure of electrical equipment Control circuit. The functions of each circuit are introduced as follows:

[0042] Such as image 3 As shown, the power input terminal of the on-board electronic equipment is directly connected to the car battery, so that the interference signal generated on the car must go through the connecting line to the battery terminal to enter the power supply of the on-board equipment. The crosstalk signal is attenuated by the connecting line and absorbed by the batt...

Embodiment 3

[0074] This embodiment provides a power supply method for vehicle-mounted electronic equipment, and its specific processing flow is as follows: Figure 4 As shown, the following processing steps are included:

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Abstract

The embodiment of the invention relates to a power supply device and a power supply method of a vehicle-mounted electronic device. The power supply method mainly comprises the steps of receiving the voltage output by a vehicle-mounted power supply through an electronic circuit, detecting the voltage, judging whether a voltage value obtained through the detection is lower than a set voltage over-low threshold value or higher than a set voltage over-high threshold value, and switching off the electronic circuit through an electronic switch if so; and outputting the voltage to the vehicle-mounted electronic device through the electronic circuit if not. According to the power supply device and the power supply method, which are disclosed by the embodiment of the invention, the situation of switching off a power supply of the vehicle-mounted electronic device in time when the voltage output by an automobile vehicle-mounted power supply is in the phenomena of under-voltage and over-voltage can be realized, the vehicle-mounted electronic device can be prevented from being damaged due to the damage of the power supply of the vehicle-mounted electronic device caused by over-high voltage output by the power supply of an automobile power supply and can be prevented from working unreliably due to over-low voltage output by the power supply of the vehicle-mounted electronic device caused by over-low voltage output by the automobile power supply, and the influence of various interferences such as crosstalk interference of the vehicle-mounted power supply on the vehicle-mounted electronic device can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of electronic applications, in particular to a power supply device and method for vehicle-mounted electronic equipment. Background technique [0002] Cars are an indispensable means of mobile transportation in our modern society. There are more and more electronic devices on cars, and cars have very strong space radiation interference, crosstalk interference, etc. due to their own existence and external conditions. interference. [0003] Crosstalk interference is that the interference signal generated on the car is transmitted to the on-board electronic equipment through various connecting lines, so that the on-board electronic equipment cannot work reliably. One of the main ways is that the interference signal interferes with the on-board equipment through the power line. The above-mentioned light interference signal makes the data of the on-board electronic equipment inaccurate or lost, cannot work normal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02H02H3/24H02H3/20H02H11/00
Inventor 杨会平马振洲张尊兰王顺仁夏栩
Owner AEROSPACE INFORMATION
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