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Device and method for waking up automobile CAN (Controller Area Network) bus as well as vehicle

A CAN bus and wake-up device technology, applied in the field of automotive CAN bus wake-up devices, can solve the problems of increased design time and design cost, high cost of transceivers, etc., and achieve the effect of simple structure and low cost

Active Publication Date: 2014-09-17
BAIC MOTOR CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wake-up circuit design of the transceiver with wake-up function is simple, but the cost of the transceiver is relatively high; time and design costs

Method used

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  • Device and method for waking up automobile CAN (Controller Area Network) bus as well as vehicle
  • Device and method for waking up automobile CAN (Controller Area Network) bus as well as vehicle
  • Device and method for waking up automobile CAN (Controller Area Network) bus as well as vehicle

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Experimental program
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Embodiment Construction

[0032] The specific embodiment of the present invention provides a kind of automobile CAN bus wake-up device, as attached figure 2 As shown, the device may specifically include:

[0033] Wake up the electronic control unit 1 and the detection electronic control unit 2;

[0034] The wake-up electronic control unit 1 includes a wake-up sending module 11 and a wake-up transceiver 12;

[0035] The detection electronic control unit 2 includes a wake-up detection module 21 and a detection transceiver 22;

[0036] In the wake-up sending module 11, it may specifically include:

[0037] Pulse extension circuit, switch drive circuit and voltage regulator circuit.

[0038] The power supply end of the pulse extension circuit is connected to VCC, and the signal output end of the pulse extension circuit is connected to the signal input end of the switch drive circuit.

[0039] The power supply end of the switch drive circuit is connected to VCC through the first resistor R1, and the si...

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Abstract

The invention provides a device and a method for waking up an automobile CAN bus as well as a vehicle, wherein in the device, a wake-up sending module comprises a pulse lengthening circuit, a switch drive circuit and a voltage stabilizing circuit; and a wake-up detecting module comprises a time filter and a voltage comparator. Through the adoption of the invention, a transceiver, without a wake-up function can achieve the wake-up function; and the device has the characteristics that the structure is simple, the cost is low, and the device is directly mounted, without the need of designing sofeware.

Description

technical field [0001] The invention relates to the field of automobile CAN (controller area network) bus communication, in particular to an automobile CAN bus wake-up device, method and vehicle. Background technique [0002] Automotive CAN bus has been widely used in various types of cars, and the corresponding CAN bus network management is an important technology to ensure the stable operation of cars. Network management is mainly used to manage the application information of power CAN (VBUS) and body CAN (EBUS) and the sleep wake-up function. figure 1 What is shown is the mutual transfer between the network management sleep and wake-up functions, where NM represents network management. Bus sleep can reduce the static power consumption of the bus, so as to realize the low power consumption of the electronic control unit (ECU), and then turn off the electronic control unit, and finally achieve the purpose of reducing the static power consumption of the whole vehicle; wake-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 孙江辉姬广斌
Owner BAIC MOTOR CORP LTD