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A conversion and matching circuit of vehicle speed pulse signal level

A pulse signal and matching circuit technology, which is applied in the direction of circuits or fluid pipelines, vehicle parts, transportation and packaging, etc., can solve the problems of low reliability and achieve the effect of overcoming low reliability

Active Publication Date: 2019-07-05
SHENZHEN STREAMING VIDEO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a conversion matching circuit of the vehicle speed pulse signal level, aiming to solve the problem of low reliability of using the vehicle speed pulse signal as the basis for calculating the vehicle speed

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  • A conversion and matching circuit of vehicle speed pulse signal level
  • A conversion and matching circuit of vehicle speed pulse signal level
  • A conversion and matching circuit of vehicle speed pulse signal level

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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] figure 1 The module structure of the conversion and matching circuit of the vehicle speed pulse signal level provided by the embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0019] A conversion and matching circuit of vehicle speed pulse signal level, said conversion and matching circuit of vehicle speed pulse signal level comprises:

[0020] A vehicle speed pulse signal voltage detection circuit 1 for detecting the vehicle speed pulse signal carried by the vehicle;

[0021] Be c...

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Abstract

Provided is a circuit for level switch and match of a vehicle speed pulse signal. The circuit for level switch and match of a vehicle speed pulse signal comprises: a vehicle speed pulse signal voltage detection circuit (1), a vehicle speed pulse detection circuit (2) and an MCU processor (3). The vehicle speed pulse detection circuit (2) converts, according to the minimum voltage value of a vehicle speed pulse signal, the vehicle speed pulse signal into a matched vehicle speed pulse signal which the MCU processor (3) can accept. The vehicle speed pulse signal is used as the basis for calculating the vehicle speed, overcoming the problem of low reliability in the current usage of vehicle speed pulse signals as a vehicle speed calculation basis.

Description

technical field [0001] The invention belongs to the technical field of vehicle-mounted electronic equipment, and in particular relates to a conversion and matching circuit for a vehicle speed pulse signal level. Background technique [0002] Now with the rapid development of social economy and the advancement of science and technology, automobiles have become popular commodities and have entered thousands of households. However, due to the high speed of automobiles, traffic accidents are very likely to occur, and speed limit driving is required in some sections of the road. For road sections with good GPS / BEIDOU signals, the existing GPS / BEIDOU monitoring and speed measuring devices can effectively manage, but relatively remote sections or tunnels are not easy to manage. In order to better manage remote road sections or tunnels, use vehicle speed The pulse signal is input as the vehicle speed source of the on-board electronic equipment. On the other hand, because the increa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R16/023
CPCB60R16/0232
Inventor 蒋建兵
Owner SHENZHEN STREAMING VIDEO TECH