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A method for operating a fan of a laser projection device

A technology of laser projection and operation method, applied in the field of electronics, can solve problems such as large and insufficient rotor starting resistance, or when the rotor is located in certain positions, the fan cannot operate normally, etc., to improve continuity, reduce equipment maintenance costs, The effect of improving reliability

Active Publication Date: 2019-12-06
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, if the magnetization amount of the permanent magnet is insufficient, or the rotor is located in a certain position, the resistance to rotation of the rotor may be relatively large.
Or, when the fan is running, if foreign matter enters between the fan blades, it will also increase the resistance of the rotor to rotate.
All of the above situations may cause the fan to not operate normally and cannot perform the cooling function normally.

Method used

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  • A method for operating a fan of a laser projection device
  • A method for operating a fan of a laser projection device
  • A method for operating a fan of a laser projection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as figure 2 As shown, Embodiment 1 of the present invention provides a method for operating a fan of a laser projection device. The method includes:

[0063] Step S00: receiving a target fan operation feedback signal;

[0064] In a specific implementation, the fan assembly will feed back the running status of the fan to the device control chip. The feedback signal can be, for example, the fan speed signal, reflecting the current speed of the fan running, or the feedback signal can also be the rotation of the fan. The signal reflects whether the fan is currently in a rotating state or not.

[0065] The fan can actively provide feedback signals of the operation status to the device control chip at regular intervals, and the device control chip can also actively query the fan, and the fan provides feedback signals according to the query command.

[0066] Or, set in the program, if the operation of the fan meets the set conditions, such as a sudden drop in speed, or...

Embodiment 2

[0132]Embodiment 2 of the present invention provides a method for operating a fan of a laser projection device. The difference from Embodiment 1 is that when it is judged that the fan is operating abnormally, the current driving voltage is switched to the second driving voltage to drive the target fan at the same time. The driving voltage of at least one fan around the target fan is also switched, specifically, the driving voltage of the at least one fan is increased, so that there is an increased wind pressure driving force along the speed direction of the target fan.

[0133] This improvement scheme can be in embodiment one image 3 or Figure 4 or Figure 5 An improvement over any of the process methods shown, for example, when based on image 3 When improving on the basis of the method shown, the operation method is as follows Figure 9 Shown:

[0134] Step S900: receiving a target fan operation feedback signal;

[0135] Step S920: According to the feedback signal, de...

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Abstract

The invention discloses a laser projection equipment fan operation method. The laser projection equipment fan operation method comprises the following steps of receiving a target fan operation feedback signal; judging whether a target fan operates normally or not according to the feedback signal; and if it is judged that operation is in anomaly, switching from current driving voltage to second driving voltage to drive the target fan until the target fan operates normally, wherein the second driving voltage is greater than the current driving voltage. According to the laser projection equipmentfan operation method, the operation reliability of the equipment fan can be improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method for operating a fan of a laser projection device. Background technique [0002] Laser projection equipment has display characteristics such as large projection size, wide color gamut, high brightness, and strong interactivity, which makes laser projection equipment widely adaptable in different environments such as home entertainment, business, education, and community services. It brings a brand-new viewing experience to the audience. [0003] The light source of laser projection equipment uses lasers, and its photoelectric conversion efficiency is 20%~25%, while the power of general laser projection equipment is 300~600W. For heat dissipation, the current mainstream heat dissipation method is still air cooling. [0004] In an air-cooled heat dissipation system, multiple fans are usually set up to form an air duct, so that cold air enters the air duct from the air...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00G03B21/16
CPCF04D27/00F04D27/008F05D2270/303F05D2270/304F05D2270/42G03B21/16
Inventor 刘洁
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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