An automotive electronic power supply monitoring signal processing circuit
A signal processing circuit and power monitoring technology, which is applied in the field of automotive safety driving and automotive electronic circuits, can solve the problems of power monitoring that cannot achieve real-time feedback and timely intelligent processing, and increase the risk factor of electronic circuits, so as to achieve vehicle safety and compatibility. sex high effect
Active Publication Date: 2018-08-10
DALIAN ROILAND SCI & TECH CO LTD
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Problems solved by technology
In most automotive electronic circuits, the power monitoring part cannot achieve real-time feedback and timely intelligent processing, which will increase the risk factor of electronic circuits, so the design and development of power monitoring circuits become extremely important
Method used
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[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0028] Automotive electronic equipment power supply is generally 12V and 5V power supply, such as figure 1 As shown, an embodiment of an automotive electronic power supply monitoring signal processing circuit includes:
[0029] Power input module, the input terminal is connected to the 12V or 5V power supply of the car, and the 12V or 5V power supply of the car is filtered and anti-coupling processed, and the processed voltage is output to the power monitoring module, and the processed voltage is divided to get embedded The type chip can accept the voltage within the range, and output it to the isolation module; the front end adopts π-type filter, inductive anti-coupling, and interference-removing circuit, so that the entire monitoring circuit can get a power supply input with small ripple and high precision, realizing accurate powered by.
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The invention relates to an automotive electronic power supply monitoring signal processing circuit. Including the power input module, the input terminal is connected to the 12V or 5V power supply of the car, and the processed voltage is output to the power monitoring module, and the processed voltage is divided to obtain a voltage within the acceptable range of the embedded chip, and it is output To the isolation module; the isolation module is used to isolate the signal of the voltage after the voltage division of the power input module, and the output terminal is used to connect the embedded chip; the enable control module, the input terminal is used to connect the embedded chip, and the output terminal is connected to the power monitoring The enable control terminal of the module; the power monitoring module is used to stabilize the power supply provided by the power input module, remove the ripple processing and output; the overvoltage and overcurrent alarm module, the output terminal is connected to the power monitoring module, which is used to alarm The signal is sent to the embedded chip. The invention can monitor the power supply part of the automobile electronic equipment in real time, so that the safety of the driver and the vehicle can be well guaranteed.
Description
technical field [0001] The invention relates to the fields of automobile safe driving and automobile electronic circuits, in particular to an automobile electronic power supply monitoring signal processing circuit. Background technique [0002] With the rapid development of the global economy and the substantial improvement of people's living standards, the penetration rate of cars is increasing year by year. However, when the car enters every family, the maintenance of the car and the safety of driving are given priority. [0003] Modern automobiles have more and more electronic control technologies, and the application of automobile intelligence has greatly increased the corresponding power consumption of automobile electronic equipment. The load space of the circuit system on the car is limited, and the car microcomputer, electronic components, and various sensor circuit systems are easy to cause damage. Adding a large number of additional electronic devices to the car ...
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IPC IPC(8): G01R31/40G01R19/165
CPCG01R19/16538G01R31/40
Inventor 田雨农蒋辉周秀田于维双陆振波
Owner DALIAN ROILAND SCI & TECH CO LTD