In-vehicle device power management method and related components

Abstract

The present application discloses that in the power management method of the on-board equipment provided, when the communication module is switched to the low frequency band, the DCDC power supply is turned off, and the LDO power supply is used to supply power to the communication module, and the DCDC power supply stops working, so the DCDC power supply interferes with the low frequency band of the communication module. The problem does not exist. At the same time, the LDO power supply does not have a switching frequency and will not interfere with the antenna of the communication module. Therefore, the stability of 2G network communication can be ensured through the LDO power supply; when the communication module switches to the high frequency band, switch to DCDC The power supply can ensure the efficient and stable power supply of the power module. Therefore, this method can not only effectively solve the problem of poor receiving sensitivity of the DCDC to the low-frequency band of the communication module, but also ensure the long-term stable operation of the vehicle-mounted equipment. The present application also provides a vehicle-mounted equipment power management device, a vehicle-mounted equipment, and a readable storage medium, which have the above-mentioned advantageous effects.

Description

technical field [0001] The present application relates to the field of electronic technology, and in particular to a power management method and device for a vehicle-mounted device, a vehicle-mounted device, and a readable storage medium. Background technique [0002] On-board OBD (on-board diagnostic system) equipment is mainly used for vehicle data collection, diagnosis, etc. It can also upload data to the remote platform through the 4G communication module, and assumes important responsibilities in the vehicle. [0003] The internal space of OBD is small, and multiple functions such as CAN, GPS, and 4G are integrated at the same time. The internal electromagnetic environment is complex, and the power management design of the OBD whole system is complicated. To ensure high-efficiency and continuous power supply, the power supply generally adopts a 2-level DCDC power supply . The frequency of DCDC power supply is generally 300K-2.2M, which is higher frequency. Due to the h...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of this application is to provide a power management method for vehicle-mounted equipment, a device, vehicle-mounted equipment, and a readable storage medium, through a new power management solution to achieve electromagnetic compatibility within the equipment, to solve the problem of DCDC power supply for GSM The problem of poor reception sensitivity caused by interference, to improve the reception sensitivity of GSM low frequency band, the specific plan is as follows:

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