Vehicle-mounted equipment power supply management method and related components

Abstract

The invention discloses a vehicle-mounted equipment power supply management method. When a communication module is switched to a low frequency band, DCDC power supply is turned off, an LDO power supply supplies power to the communication module, and the DCDC power supply stops working, so that the problem that the DCDC power supply interferes with the low-frequency band of the communication moduledoes not exist, meanwhile, the LDO power supply does not have switching frequency and does not interfere with an antenna of the communication module, and therefore, the stability of 2G network communication can be ensured through power supply of the LDO power supply; and when the communication module is switched to the high frequency band, the DCDC power supply is switched to supply power, so that efficient and stable power supply of the power supply module can be ensured. Therefore, the method not only can effectively solve the problem that the DCDC is poor in low-frequency-band receiving sensitivity to the communication module, but also guarantees the long-term stable operation of the vehicle-mounted equipment. The invention further provides a vehicle-mounted equipment power supply management device, the vehicle-mounted equipment and a readable storage medium, which have the above beneficial 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...

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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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