Head-mounted device and heat dissipation method therefor, and computer-readable storage medium

Patent metadata

Field	Value
Publication number	US-12501576-B2
Application number	US-202018003926-A
Country	US
Kind code	B2
Filing date	Oct 24, 2020
Priority date	Jun 30, 2020
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

Disclosed is a heat dissipation method for a head-mounted device. A temperature sensor, a heat dissipation fan and a power supply are disposed in the head-mounted device. The heat dissipation method for a head-mounted device comprises: obtaining a temperature acquired by the temperature sensor and an electric quantity of the power supply periodically or in real time; and activating the heat dissipation fan when it is determined that the head-mounted device satisfies a heat dissipation condition according to the temperature and the electric quantity. Further disclosed are a head-mounted device and a computer-readable storage medium. By means of the present disclosure, heat dissipation can be performed on a head-mounted device in a timely manner, thereby ensuring the service life of the head-mounted device.

First claim

What is claimed is:

1 . A heat dissipation method for a head-mounted device, wherein the head-mounted device is provided with a temperature sensor, a heat dissipation fan and a power supply therein, the heat dissipation method for the head-mounted device is performed by the head-mounted device, the heat dissipation method for the head-mounted device comprising:
obtaining a temperature acquired by the temperature sensor and an electric quantity of the power supply periodically or in real time; activating the heat dissipation fan in response to the head-mounted device satisfies satisfying a heat dissipation condition according to the temperature and the electric quantity; determining a first temperature change rate of the head-mounted device periodically according to the temperature acquired by the temperature sensor; determining a target rotational speed of the heat dissipation fan according to the first temperature change rate, wherein determining the target rotational speed of the heat dissipation fan according to the first temperature change rate comprises: in response to a current first temperature change rate being less than a first temperature change rate determined last time, updating a cumulative number of times that the current first temperature change rate is continuously less than the first temperature change rate determined last time, in response to the cumulative number of times reaching a preset number of times, clearing the cumulative number of times, and determining the target rotational speed of the heat dissipation fan according to a preset proportional value and a current rotational speed of the heat dissipation fan, wherein the preset proportional value is less than 1, and wherein determining the target rotational speed of the heat dissipation fan according to the first temperature change rate comprises determining the target rotational speed of the heat dissipation fan according to the first temperature change rate and a current electric quantity of the power supply; and wherein the heat dissipation method for the head-mounted device further comprises adjusting a rotational speed of the heat dissipation fan according to the target rotational speed to ensure that an internal heat of the head-mounted device is not too high.

2 . The heat dissipation method for the head-mounted device of claim 1 , wherein determining the target rotational speed of the heat dissipation fan according to the first temperature change rate and the current electric quantity of the power supply comprises:
performing a weighted calculation to the first temperature change rate and the current electric quantity of the power supply to determine a first reference parameter according to a weight corresponding to the first temperature change rate and a weight corresponding to the current electric quantity of the power supply; and determining the target rotational speed of the heat dissipation fan according to a mapping relationship between a reference parameter and the rotational speed of the heat dissipation fan, and the first reference parameter.

3 . The heat dissipation method for the head-mounted device of claim 2 , wherein the first reference parameter is determined by a weighting formula, the weighting formula is R=0.7*K+0.3*C,
wherein, R is the first reference parameter, K is the temperature, 0.7 is weight corresponding to the temperature, C is the electric quantity, and 0.3 is the weight corresponding to the electric quantity.

4 . The heat dissipation method for the head-mounted device of claim 1 , wherein after determining the first temperature change rate of the head-mounted device periodically according to the temperature acquired by the temperature sensor, the method further comprises:
determining whether the first temperature change rate is less than or equal to a preset change rate; in response to the first temperature change rate is being less than or equal to the preset change rate, controlling the heat dissipation fan to stop operating; and in response to the first temperature change rate is being greater than the preset change rate, performing determining a target rotational speed of the heat dissipation fan according to the first temperature change rate.

5 . The heat dissipation method for the head-mounted device of claim 1 , wherein in response to a second reference parameter is being greater than or equal to a first preset threshold value, it is determined that the head-mounted device satisfies the heat dissipation condition, wherein the second reference parameter is determined according to a second temperature change rate of the head-mounted device and the electric quantity, and the second temperature change rate is determined by the temperature acquired by the temperature sensor.

6 . The heat dissipation method for the head-mounted device of claim 1 , wherein in response to a second reference parameter being greater than or equal to a first preset threshold value and a second temperature change rate within a preset time period increasing sequentially, it is determined that the head-mounted device satisfies the heat dissipation condition, and
wherein the second reference parameter is determined according to the second temperature change rate of the head-mounted device and the electric quantity, and the second temperature change rate is determined by the temperature acquired by the temperature sensor.

7 . The heat dissipation method for the head-mounted device of claim 1 , wherein each module on a mainboard of the head-mounted device is provided with a corresponding temperature sensor, and before activating the heat dissipation fan in response to the head-mounted device satisfying a heat dissipation condition according to the temperature and the electric quantity, the method further comprises:
determining whether the head-mounted device satisfies the heat dissipation condition according to the temperature and the electric quantity; wherein determining whether the head-mounted device satisfies the heat dissipation condition according to the temperature and the electric quantity comprises: determining a third temperature change rate corresponding to each module according to a temperature acquired by the temperature sensor corresponding to the module; determining a third reference parameter corresponding to each module according to the third temperature change rate and the electric quantity; and determining whether the third reference parameter satisfies a preset condition, wherein in response to third reference parameters satisfying the preset condition, it is determined that the head-mounted device satisfies the heat dissipation condition.

8 . The heat dissipation method for the head-mounted device of claim 7 , wherein the preset condition comprises one of the following:
any one of the third reference parameters is greater than or equal to a second preset threshold value; a weighted parameter obtained by performing a weighted calculation to the third reference parameters is greater than or equal to a third preset threshold value.

9 . The heat dissipation method for the head-mounted device of claim 7 , wherein the head-mounted device comprises a plurality of heat dissipation fans, the heat dissipation fans are disposed corresponding to one or more modules, and activating the heat dissipation fan comprises:
determining a target heat dissipation fan among the heat dissipation fans, wherein determining the target heat dissipation fan among the heat dissipation fans satisfies one of the following: the third reference parameter of at least one module corresponding to the target heat dissipation fan is greater than or equal to a second preset threshold value; a weighted parameter corresponding to the

Assignees

• Goertek Inc

Inventors

• Qiu Tao
• Zhang Xiangjun
• Wang Tiecun
• Liu Wenjie

Classifications

• H05K7/20209 Primary

  Thermal management, e.g. fan control · CPC title

• G02B27/017 Primary

  Head mounted · CPC title

• G01P1/026

  for speed measuring devices, e.g. pulse generator · CPC title

• G01K1/024

  for remote indication · CPC title

• G01K3/10

  in respect of time, e.g. reacting only to a quick change of temperature · CPC title