A vehicle and an on-board monitoring device thereof and a vehicle signal detection circuit

A signal detection and vehicle technology, which is applied in the field of automobiles and their on-board monitoring equipment, and vehicle signal detection circuits, can solve problems such as high cost and complicated circuits, and achieve the effect of preventing circuit damage and solving complex circuits and high costs

Inactive Publication Date: 2018-10-23
SHENZHEN STREAMING VIDEO TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of complex circuit and high cost in the existing vehicle signal detection circuit, the

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  • A vehicle and an on-board monitoring device thereof and a vehicle signal detection circuit
  • A vehicle and an on-board monitoring device thereof and a vehicle signal detection circuit
  • A vehicle and an on-board monitoring device thereof and a vehicle signal detection circuit

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] It should be noted that the term "comprising" and any variations thereof in the description and claims of the present invention are intended to cover non-exclusive inclusion. For example, a process, method or system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or optionally further includes Other steps or units inherent in these processes, methods, products or apparatus. In addition, the terms "first", "second", and "third", etc. are used to distinguish different objects, not to ...

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Abstract

The invention belongs to the technical field of automobiles, and provides a vehicle and an on-board monitoring device thereof and a vehicle signal detection circuit. The vehicle signal detection circuit comprises: a detection signal input module, a signal pre-processing module, a reference voltage generation module, a voltage comparison module and a main control Module. The signal pre-processing module performs surge protection processing and voltage conversion processing on the received detection signal, and outputs stable to be compared voltage to the voltage comparison module, thereby effectively preventing circuit damage caused by surge, and using the voltage comparison module to compare the voltage to be compared with the reference voltage. The voltage is compared to produce a comparison result, and the wide voltage input and comparison of the multi-path signal is realized. The main control module collects the comparison result, and analyzes the state of the vehicle according to the comparison result, and adjusts the reference voltage according to needs to satisfy voltage comparison requirements of various vehicles, thus effectively solving the problem of complicated circuit and high cost existing in the existing vehicle signal detection circuit.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to an automobile, its vehicle-mounted monitoring equipment, and a vehicle signal detection circuit. Background technique [0002] Due to the complex electrical environment of the car, the detection signal of the vehicle's running state is easily disturbed, such as the detection signal level and amplitude are unstable, and positive and negative surge signals will be superimposed on the detection signal line. Vehicle monitoring equipment generally supports vehicle speed pulse signal detection, vehicle door opening signal detection, vehicle door closing signal detection, brake signal detection, etc. Since most of the action execution parts of the vehicle are inductive components, such as solenoid valves, air pumps, and wiper controllers, these parts will generate surge signals during the action process. When the vehicle monitoring equipment detects the corresponding act...

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00G01R31/006G01R19/0084G01R19/165
Inventor 范章华
Owner SHENZHEN STREAMING VIDEO TECH
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