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Vehicle-mounted diagnostic system and upgrade method for same

An on-board diagnostic system and upgrade package technology, applied in the field of on-board diagnostic systems, can solve problems such as missed server push upgrades and inability to guarantee equipment working status, and achieve the effect of timely upgrades

Inactive Publication Date: 2018-07-27
高新兴物联科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not difficult to see that the active distribution adopted by the MCU has strict requirements on the reliability of the server, and the server cannot guarantee that the device is in a working state when pushing, so the MCU is likely to miss the push update of the server continuously

Method used

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  • Vehicle-mounted diagnostic system and upgrade method for same
  • Vehicle-mounted diagnostic system and upgrade method for same
  • Vehicle-mounted diagnostic system and upgrade method for same

Examples

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Embodiment Construction

[0025] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] In the following description, use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only to facilitate description of the present invention and has no specific meaning by itself. Therefore, 'module', 'part' or 'unit' may be used in combination.

[0027] like figure 1 As shown, an embodiment of the present invention provides an on-board diagnostic system, and the on-board diagnostic system in this embodiment includes a modem 110 and a microcontroller unit 120 .

[0028] The modem 110 requests a preset server to download the upgrade package.

[0029] In this embodiment, the Modem requests the server to download an upgrade package, and the upgrade package may include the upgrade content of the Modem, and may also include the upgrade content of the MCU. Specific as figure 2 As shown in , ...

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Abstract

The invention discloses a vehicle-mounted diagnostic system and an upgrade method for the same. The vehicle-mounted diagnostic system comprises a modulator-demodulator and a micro control unit; the modulator-demodulator requests to download an upgrade packet for a preset server; the modulator-demodulator detects contents for carrying out upgrading on the micro control unit from the downloaded upgrade packet; and the modulator-demodulator sends the contents for carrying out upgrading on the micro control unit to the micro control unit, and the micro control unit is upgraded by using the contents for carrying out upgrading on the micro control unit. According to the invention, the micro control unit of the vehicle-mounted diagnostic system does not adopt a strategy that the server actively pushes the upgrade packet, but the modulator-demodulator of the vehicle-mounted diagnostic system is utilized to actively request to download the upgrade packet for the server; when the upgrade contents of the micro control unit are included in the upgrade packet, the upgrade contents are sent to the micro control unit to carry out upgrading; and the modulator-demodulator can actively and timely download the upgrade packet, and thus, the micro control unit is more timely to upgrade.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an on-board diagnosis system and an upgrading method for the on-board diagnosis system. Background technique [0002] In OBD (On-Board Diagnostic, on-board diagnostic system) products, MCU (Microcontroller Unit, micro control unit) is responsible for control, data collection and data reporting, while Modem (modem) is mainly responsible for wireless communication. This division of labor and close cooperation The mechanism enables OBD products to complete vehicle data collection and reporting, and provide wireless communication services at the same time. Like all wireless communication products, such products can also be upgraded through FOTA (Firmware Over-The-Air, software upgrade over the air) to repair software faults and add new functions in a timely manner. [0003] In the upgrade strategy, the MCU adopts the strategy of active push by the server. It is not difficult t...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L29/08
CPCH04L41/082H04L67/12H04L67/34H04L67/60
Inventor 尚文科
Owner 高新兴物联科技股份有限公司
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