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A wake-up circuit suitable for Raspberry Pi

A wake-up circuit, Raspberry Pi technology, applied in the direction of electronic digital data processing, boot program, program control design, etc., can solve problems such as obstacles to intelligent driving experience, poor stability of wake-up circuit, and inability to meet user booting needs, etc., to achieve rich Wake-up method, effect of improving reliability and stability

Pending Publication Date: 2019-03-01
杭州绝策科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The wake-up method of the existing vehicle-mounted terminal is relatively simple, generally through the car ACC power supply
As a cost-effective and comprehensive microcomputer, the Raspberry Pi is often used in the control system of the vehicle terminal. However, in the existing vehicle terminal with the Raspberry Pi as the control core, it generally does not support remote network signals or Bluetooth. The wake-up of short-distance communication signals has caused certain obstacles to the development of intelligent driving experience, and cannot meet the needs of users in different application scenarios.
[0004] In addition, due to its own design reasons, the Raspberry Pi can only be restarted by power reset or running control pins.
Since the Raspberry Pi itself is used as a power control unit, it cannot be restarted by power reset, so it can only be restarted by running the control pin.
In the prior art, the wake-up circuit for waking up the Raspberry Pi by operating the control pin is poor in stability, and cannot reliably provide the wake-up function of the Raspberry Pi

Method used

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  • A wake-up circuit suitable for Raspberry Pi
  • A wake-up circuit suitable for Raspberry Pi
  • A wake-up circuit suitable for Raspberry Pi

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Embodiment Construction

[0018] Below, the invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, on the premise of no conflict, the various embodiments described below or the technical features can be combined arbitrarily to form a new embodiment. .

[0019] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0020] Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper...

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Abstract

The invention discloses a wake-up circuit suitable for a Raspberry Pi. The circuit comprises a wake-up signal input unit and a delay trigger unit, the awakening signal input unit is provided with fourpaths of OR gates for inputting four paths of awakening signals; when the external wake-up signal is a high-level signal; and the wake-up signal input unit is conducted to output a low-level reversewake-up signal to the delay trigger unit, and when the reverse wake-up signal is a low-level signal, the delay trigger unit outputs a 3.3 V high-level signal to the raspberry pi switch control pin andkeeps a preset duration to wake up the raspberry pi to be started. According to the invention, multi-signal awakening of the vehicle-mounted terminal is realized, the starting requirements of a userunder different application scenes are met, and the reliability of the Raspberry Pi awakening function is improved.

Description

technical field [0001] The present invention relates to the technical field of automotive electronics, and more specifically relates to a wake-up circuit suitable for Raspberry Pi. Background technique [0002] The vehicle-mounted terminal is used for vehicle management and monitoring, and integrates multiple functions such as positioning, communication, and vehicle driving records, and plays an indispensable role in vehicle driving. [0003] The wake-up method of the existing vehicle-mounted terminal is relatively simple, and generally wakes up through the ACC power supply of the vehicle. As a cost-effective and comprehensive microcomputer, the Raspberry Pi is often used in the control system of the vehicle terminal. However, in the existing vehicle terminal with the Raspberry Pi as the control core, it generally does not support remote network signals or Bluetooth. The wake-up of short-distance communication signals has caused certain obstacles to the development of intel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/24G06F9/4401
CPCG06F1/24G06F9/4418
Inventor 吴柳萌林剑余珂
Owner 杭州绝策科技有限公司
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