Input/output circuit, electronic device and vehicle

An input and output circuit and circuit technology, applied in the field of vehicles, can solve problems such as device burnout, inability to achieve compatible input of vehicle power supply, etc., and achieve the effects of avoiding breakdown, ingenious and streamlined structural design, and good reliability.

Pending Publication Date: 2022-03-01
ZHIDAO NETWORK TECH (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the existing solutions based on digital circuits to realize ultrasonic circuits, the designed circuits only support input of 12V or only support input of 24V, and the same circuit cannot realize compatible input of vehicle power supplies with different amplitudes such as 12V and 24V.
In addition, the external input voltage of the circuit cannot exceed the threshold of the IO voltage, otherwise there will be a risk of the device being burned
For ultrasonic circuits, the external input voltage may exceed the threshold of the IO voltage of internal components in different echo signals. It is difficult to avoid this risk in the existing ultrasonic circuit structure based on digital circuits

Method used

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  • Input/output circuit, electronic device and vehicle
  • Input/output circuit, electronic device and vehicle
  • Input/output circuit, electronic device and vehicle

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments It is a part of embodiments of the present disclosure, but not all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.

[0026] It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "...

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Abstract

The invention relates to an input and output circuit, an electronic device and a vehicle. The circuit comprises a signal output and input unit. The signal output unit comprises a first triode, wherein a collector electrode of the first triode is connected between a first power supply and a circuit IO end through a first pull-up resistor, and the circuit IO end serves as a signal output end of the signal output unit; the emitter is grounded; the base electrode is connected to the output end of the control unit through a first divider resistor. The signal input unit comprises a second triode, a base electrode of the second triode is connected to one end of a second divider resistor and one end of a third divider resistor in parallel, the other end of the second divider resistor is grounded, the other end of the third divider resistor is connected between the first pull-up resistor and a circuit IO end, and the circuit IO end serves as the signal input end of the signal input unit. The emitter is grounded; and a collector electrode is connected to the input end of the control unit and is connected to a second power supply through a second pull-up resistor. The circuit can be compatible with 12V and 24V vehicle-mounted power supplies, and can be applied to unmanned vehicles / automatic driving vehicles and the like.

Description

technical field [0001] The present disclosure relates to the technical field of vehicles, in particular to an input and output circuit, electronic devices and a vehicle. Background technique [0002] In the field of unmanned vehicles or self-driving vehicles, distance detection and obstacle detection can be realized by using ultrasonic waves. In some application scenarios, digital circuits can be used to realize the function of ultrasound. [0003] However, in the existing solutions based on digital circuits to realize ultrasonic circuits, the designed circuits only support input of 12V or only support input of 24V, and the same circuit cannot realize compatible input of vehicle power supplies with different amplitudes such as 12V and 24V. . In addition, the external input voltage of the circuit cannot exceed the threshold of the IO voltage, otherwise there will be a risk of the device being burned. For the ultrasonic circuit, different echo signals may have an external i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H11/00G01S7/52
CPCH02H11/002G01S7/52001
Inventor 张慧松
Owner ZHIDAO NETWORK TECH (BEIJING) CO LTD
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