WO2017201990A1

WO2017201990A1 - Projector safe working method and device

Info

Publication number: WO2017201990A1
Application number: PCT/CN2016/106641
Authority: WO
Inventors: 张永亮
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-05-24
Filing date: 2016-11-21
Publication date: 2017-11-30
Also published as: CN107422591B; CN107422591A

Abstract

A projector safe working method and device, the method comprises the following steps: detecting the fan rotational speed of the projector fan (S101); detecting the battery temperature of the projector's built-in battery (S102); detecting the brightness of the projector's light engine (S103); when the fan rotational speed is less than a preset first rotational speed value and is greater than or equal to a preset second rotational speed value, and the brightness of the light engine is a preset first brightness value, reducing the brightness of the light engine from the first brightness value to a preset second brightness value (S104); when the battery temperature is lower than a preset first temperature value and is higher than or equal to a preset second temperature value, and the brightness of the light engine is the preset first brightness value, reducing the brightness of the light engine from the first brightness value to the preset second brightness value (S105), thereby maintaining the internal temperature of the projector at a long-term safety level.

Description

Projector safe working method and device

Technical field

The present invention relates to the field of optical instrument technology, and more particularly to a projector safe working method and apparatus.

Background technique

At present, for the user's portable considerations, a large-capacity battery is usually placed inside the projector, for example, a battery of 5000 mAh or more and even 10000 mAh or more to ensure that the whole machine is normally projected for two to three hours. However, when the brightness of the projector is above 100 lumens and the device is highly intelligent, both the optical machine and the circuit board generate a large amount of power consumption, for example, for an optical machine, whether it is an LED light source or a laser light source, The power consumption is on the order of tens of watts; for the circuit board, the heat will be more than ten watts. And the internal space of the projector is small, so the heat treatment of the whole machine is extremely important. If the heat treatment is not timely, the internal temperature of the whole machine will continue to be high temperature. If the battery is working in a high temperature environment for a long time, the battery will be bulged. In serious cases, the battery may explode and the projector cannot be safely operated.

It can be seen that there is a problem of low security performance when the projector is currently working.

Summary of the invention

An object of the embodiments of the present invention is to provide a projector safe working method and device, which solves the problem that the projector has low security performance when working.

In order to achieve the above objective, in a first aspect, an embodiment of the present invention provides a projector security working method, including the following steps:

Detecting a fan speed of a fan of the projector;

Detecting a battery temperature of the built-in battery of the projector;

Detecting the brightness of the optomechanical machine of the projector;

When the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to The preset brightness value is preset, and the brightness of the light machine is a preset first brightness value, and the brightness of the light machine is reduced from the first brightness value to a preset second brightness value;

When the battery temperature is lower than a preset first temperature value, and the battery temperature is higher than or equal to a preset second temperature value, and the brightness of the light machine is a preset first brightness value, The brightness of the light machine is reduced from the first brightness value to a preset second brightness value.

Optionally, the method further includes: when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the light machine brightness is the second a brightness value, the brightness of the light machine is lowered from the second brightness value to a preset third brightness value, or the light machine of the projector is turned off; when the brightness of the light machine is the second brightness value, And the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, and the brightness of the light machine is reduced from the second brightness value to a preset third brightness value , or turn off the projector's light machine.

Optionally, the method further includes: turning off the optical machine of the projector when the fan speed is less than the third speed value; and closing the battery when the battery temperature is higher than or equal to the first temperature value The projector's optomechanics.

Optionally, the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the light machine brightness is the second brightness value, including And when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the cumulative number of times the light machine brightness is the second brightness value is greater than or equal to Set a positive integer.

Optionally, when the brightness of the optical machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, the method includes: When the brightness of the light machine is the second brightness value, and within a preset time, the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value.

Optionally, the method further includes: detecting a continuous on time of the optical machine; and if the continuous on time is greater than or equal to a preset time, turning off the optical machine of the projector.

Optionally, the detecting the battery temperature of the built-in battery of the projector includes: each interval unit The temperature is detected once for the built-in battery of the projector, and is continuously detected N times, and the average value of the N times of detection results is taken as the battery temperature of the built-in battery, and the N times are positive integers set in advance.

Optionally, the turning off the optical machine of the projector comprises: outputting a prompt message for turning off the optical machine; determining whether a user response to the prompt message is received within a preset time period after outputting the prompt message The input command, if no, turns off the projector's optomechanical machine.

Optionally, the reducing the brightness of the light machine from the first brightness value to the preset second brightness value comprises: outputting the brightness of the light machine from the first brightness value to a preset a prompt message of the second brightness value; reducing the brightness of the light machine from the first brightness value to a preset second brightness value.

In a second aspect, an embodiment of the present invention provides a projector security working device, including:

a first detecting module configured to detect a fan speed of the fan of the projector;

a second detecting module configured to detect a battery temperature of the built-in battery of the projector;

a third detecting module, configured to detect a brightness of the light machine of the projector of the projector;

a first execution module, configured to: when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the brightness of the light machine is a preset first brightness a value, the brightness of the light machine is reduced from the first brightness value to a preset second brightness value;

a second execution module, configured to: when the battery temperature is lower than a preset first temperature value, and the battery temperature is higher than or equal to a preset second temperature value, and the brightness of the optical machine is a preset a brightness value that reduces the brightness of the light machine from the first brightness value to a preset second brightness value.

Optionally, the device further includes: a third execution module, configured to: when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the light The brightness of the machine is the second brightness value, the brightness of the light machine is reduced from the second brightness value to a preset third brightness value, or the light machine of the projector is turned off; the fourth execution module is set to When the brightness of the light machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, the brightness of the light machine is taken from The second brightness value is lowered to a preset third brightness value, or the projector of the projector is turned off.

Optionally, the device further includes: a fifth execution module, configured to turn off the optical machine of the projector when the fan speed is less than the third speed value; and the sixth execution module is configured to be when the battery The temperature of the projector is turned off by the temperature above or equal to the first temperature value.

Optionally, the third execution module is configured to: when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the brightness of the light machine is The cumulative number of times of the second brightness value is greater than or equal to a preset positive integer, the brightness of the light machine is reduced from the second brightness value to a preset third brightness value, or the projector of the projector is turned off.

Optionally, the fourth execution module is configured to when the brightness of the optical machine is the second brightness value, and the battery temperature is lower than the first temperature value within a preset time, and The battery temperature is higher than the second temperature value, the brightness of the light machine is lowered from the second brightness value to a preset third brightness value, or the projector of the projector is turned off.

Optionally, the device further includes: a fourth detecting module, configured to detect a continuous opening time of the optical machine; and a seventh executing module, configured to close if the continuous opening time is greater than or equal to a preset time The projector's optomechanism.

Optionally, the second detecting module is configured to perform temperature detection on the built-in battery of the projector every time interval, continuously detecting N times, and using an average value of the N times of detection results as a battery of the built-in battery Temperature, the N times are pre-set positive integers.

Optionally, the fifth execution module includes: a first output unit, configured to output a prompt message for turning off the optical machine when the fan rotational speed is less than the third rotational speed value; and determining, configured to determine that the output is Whether an instruction input by the user in response to the prompt message is received within a preset time period after the prompt message; the first execution subunit is configured not to receive the user response within a preset time period after outputting the prompt message The instruction input by the prompt message turns off the projector of the projector.

Optionally, the first execution module includes: a second output unit, configured to: when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and The brightness of the light machine is a preset first brightness value, and the output is the brightness of the light machine from the The first brightness value is lowered to a preset second brightness value prompt message; the second execution subunit is configured to reduce the light machine brightness from the first brightness value to a preset second brightness value.

The embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores one or more programs executable by a computer, and when the one or more programs are executed by the computer, the computer is executed as described above. A projector safe working method is provided.

One of the above technical solutions has the following advantages or advantages: in the embodiment of the present invention, the joint detection of the fan speed of the fan, the battery temperature of the built-in battery, and the brightness of the optical machine of the optical machine during the operation of the projector are performed. Conducive to maintain the internal temperature of the projector at a long-term safe level.

DRAWINGS

1 is a schematic flow chart of a projector safe working method according to an embodiment of the present invention;

2 is a schematic flow chart of another projector safe working method according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart diagram of another method for safely operating a projector according to an embodiment of the present invention; FIG.

4 is a schematic flow chart of another method for safely operating a projector according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart diagram of another projector safe working method according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a projector safety working device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another projector safety working device according to an embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of another projector safety working device according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of another projector safety working device according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic structural diagram of another projector safety working device according to an embodiment of the present invention; FIG.

FIG. 11 is a schematic structural diagram of another projector safety working device according to an embodiment of the present invention.

detailed description

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in the following description.

Please refer to FIG. 1. FIG. 1 is a schematic flowchart of a method for safely working a projector according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:

S101. Detect a fan speed of a fan of the projector.

When the projector is working, the light machine, the processor, and the built-in battery will generate a large amount of heat during charging and discharging. In addition, the internal space of the projector is small. If the heat is not dissipated in time, the projector will not be safely operated. For example, the built-in battery generates a large amount of gas due to the high temperature environment, and the battery pack induces a bulge, which may even cause an explosion.

Among them, the fan is an important heat-dissipating component of the projector, and the detection of the fan speed is particularly important. The larger the fan speed, the better the heat dissipation effect, and the smaller the fan speed, the worse the heat dissipation effect. Since the projector's optomechanical is the core illuminating component of the projector and the most power-consuming component, the fan speed is often adjusted according to the optomechanical temperature of the optomechanical machine. Under normal circumstances, the temperature of the optical machine will reach a higher temperature within 2 to 3 minutes after the optical machine is turned on. Therefore, under normal working conditions, the fan speed should be maintained at the maximum speed.

It can be seen that detecting the fan speed of the fan of the projector is of great significance for ensuring the safe operation of the projector.

S102. Detect a battery temperature of the built-in battery of the projector.

Among them, for the pico projector, for the user's portable consideration, a large-capacity built-in battery is usually placed inside. In order to ensure the projector's normal projection for two to three hours, the built-in battery capacity is generally above 5000mAh, and some even More than 10000mAh. Built-in battery in charge When discharging, it also generates a large amount of heat energy. In addition to the heat energy generated by the aforementioned optical machine or processor, the battery temperature of the built-in battery is likely to exceed the safe temperature value, which poses a great safety hazard.

It can be seen that detecting the battery temperature of the built-in battery of the projector is of great significance for ensuring the safe operation of the projector.

Among them, the battery temperature of the built-in battery can be detected by the battery board NTC (Negative Temperature Coefficient) sensor, or can be detected by the sensor around the built-in battery case. Generally, the temperature detected by the NTC is compared with the periphery of the case. The ambient temperature has a difference of 3-4 degrees (that is, when the battery case temperature is 59 degrees, the battery NTC detection temperature is 55 degrees), and the temperature difference can be taken into account in the specific detection process.

S103. Detect the brightness of the optomechanism of the projector of the projector.

As mentioned above, the optical machine is the core light-emitting component of the projection. For the common light source of the projector, whether it is an LED light source or a laser light source, its power consumption reaches a level of several tens of watts, and the heat generated by the light machine occupies the entire projection. The instrument produces more than half of the heat. In existing projectors, a temperature detecting sensor is attached to the light source to transmit the temperature of the light source to the device core processor in real time.

Among them, the thermal energy generated by the optical machine is proportional to the brightness of the optical machine. The higher the brightness of the optical machine, the more thermal energy it generates, and the weaker the brightness of the optical machine, the lower the thermal energy generated.

It can be seen that detecting the brightness of the optomechanical machine of the projector is of great significance for ensuring the safe operation of the projector.

S104, when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the light machine brightness is a preset first brightness value, The brightness of the light machine is reduced from the first brightness value to a preset second brightness value.

Wherein, when the fan speed value is classified, the fan speed may be used for grading, or the fan duty ratio may be used for grading, since the duty ratio of the fan is generally a relatively stable factor for distinguishing the speed gear position, In the embodiment, we use the duty cycle to measure the preset speed value.

The preset first speed value corresponds to the maximum speed of the fan, and may be set according to the configuration of the fan itself and the heat dissipation requirement, such as 95% duty ratio or 96% duty ratio or 98% duty ratio. Etc.; the preset second speed value can be set, for example, 80% duty cycle or 85% duty cycle or 88% duty cycle, etc.; other fan speed values, such as the third speed value, etc., can also be added, The third rotational speed value may be set to, for example, a 55% duty ratio or a 60% duty ratio or a 62% duty ratio or the like. In this regard, the embodiment is not limited.

Wherein, the brightness value of the brightness of the light machine can be preset according to the luminous flux of the light machine, and the higher the luminous flux of the light machine, the higher the power consumption, and the higher the heat energy generated. The brightness of the light machine can be set according to the configuration of the light machine itself, and the maximum brightness of the light machine can be preset to the first brightness value, the second brightness of the light machine is preset to the second brightness value, and other brightness of the light machine can be added. value. From the visual effect, the first brightness value can be understood as full brightness, the second brightness value can be understood as half brightness, and the third brightness value can also be set, and the third brightness value can be understood as slightly bright. In terms of luminous flux, taking the maximum luminous flux of the optical machine as 200 lumens, for example, the first brightness value can be set to 200 lumens or 195 lumens or 190 lumens, etc., and the second brightness value can be set to 100 lumens or 95 lumens or 90 lumens, etc. Etc., you can set the third brightness value to 50 lumens or 45 lumens or 40 lumens and so on. In this regard, the embodiment is not limited.

As mentioned above, after the optical machine is turned on, the temperature of the optical machine will reach a higher temperature within 2 to 3 minutes. Therefore, under normal working conditions, the fan speed should be the maximum speed value, that is, the fan speed should be greater than or equal to the above preheating. Set the first speed value. If the fan speed is less than the preset first speed value, it means that the heat dissipation of the projector cannot achieve the expected effect. For safety reasons, the projector should take corresponding measures to ensure the safe operation of the projector.

In this embodiment, the fan speed is less than the preset first speed value, and is greater than or equal to the preset second speed value. Although the first speed value is not reached, the speed may be close to the first speed value, and the fan may not be completely determined. The problem, therefore, in this case, in order not to reduce the user's experience, measures to reduce the brightness of the optical machine can be taken to reduce the temperature of the optical machine and keep the projector in a safe working state. If the brightness of the light machine is the first brightness value, in order to avoid overheating of the projector, the brightness of the light machine may be reduced from the first brightness value to the second brightness value.

S105. When the battery temperature is lower than a preset first temperature value, and the battery temperature is higher than or equal to a preset second temperature value, and the brightness of the light machine is a preset first brightness value, Place The brightness of the light machine is reduced from the first brightness value to a preset second brightness value.

Among them, in order to ensure the safe operation of the projector, it is necessary to hierarchically manage the battery temperature in advance, and respond to different actions according to different temperature levels, thereby realizing safe operation of the projector. At present, the built-in battery can be divided into the following charging and discharging intervals according to its own temperature value: 0 degree to 45 degrees is the normal temperature charging area, in the normal temperature charging area, the battery can be fully charged and discharged at full voltage; 45 degrees to 60 degrees is the high temperature charging area. In the high temperature charging area, the battery needs to be step-down and down-regulated; more than 60 degrees is the prohibited charging area. A relatively high temperature value in the high temperature charging zone may be selected as a preset first temperature value, such as 54 degrees or 55 degrees or 56 degrees, etc.; a relatively low temperature value in the high temperature charging zone may be selected as The preset second temperature value, such as 45 degrees or 46 degrees or 47 degrees, etc.; other battery temperature values can also be added. In this regard, the embodiment is not limited.

In this embodiment, when the battery temperature is lower than a preset first temperature value, higher than or equal to a preset second temperature value, if the brightness of the optical machine is a preset first brightness value, at this time, if the optical machine is long When the time is working, the temperature inside the projector will be maintained in the high-temperature charging area of the battery for a long time, and even the temperature may rise to the forbidden charging area, which poses a greater risk to the built-in battery, in order to avoid the projector. To overheat, it is possible to reduce the brightness of the light machine from the first brightness value to the second brightness value.

It should be noted that, in this embodiment, the three steps S101 to S103 do not have a sequence sequence, and S101 may be executed first, or S102 may be executed first, or S103 may be executed first, or any two or three may be executed simultaneously. In the steps, the two steps S104 to S105 also have no sequence.

In this embodiment, the joint detection of the fan speed of the fan, the battery temperature of the built-in battery, and the brightness of the optical machine of the optical machine during the operation of the projector are combined to form a “combination punch”, which is beneficial to maintaining the internal temperature of the projector in the long-term. The level of safety.

Optionally, the detecting the battery temperature of the built-in battery of the projector comprises: performing temperature detection on the built-in battery of the projector every time interval, continuously detecting N times, and using an average value of the N times of detection results as The battery temperature of the built-in battery, the N times is a positive integer set in advance.

Optionally, the detecting the fan speed of the fan of the projector includes: performing a rotation speed detection on the fan of the projector every time interval, continuously detecting N times, and using an average value of the N times of detection results as the The fan speed of the fan, the N times is a positive integer set in advance.

Wherein, the interval unit time can be set to, for example, 3 seconds or 5 seconds or 6 seconds, etc., and is continuously detected N times, and can be set to, for example, 30 times or 36 times or 40 times or 80 times or 100 times or 120 times, and the like. In this regard, the present embodiment is not limited.

Since the internal battery temperature and the fan rotation speed are in a state of fluctuating at the time of the operation of the projector, the true working environment cannot be reflected by the value of one detection. Therefore, in the present embodiment, the temperature is continuously performed multiple times. The detection prevents the projector from making an inappropriate response.

In the embodiment of the present invention, the above method can be applied to a projector or a pico projector device, that is, the devices can implement the above method.

Referring to FIG. 2, FIG. 2 is a schematic flowchart of another method for safely working a projector according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:

S201. Detect a fan speed of a fan of the projector.

S202. Detect a battery temperature of the built-in battery of the projector.

S203. Detect the brightness of the optomechanism of the projector of the projector.

S204, when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the brightness of the light machine is a preset first brightness value, The brightness of the light machine is reduced from the first brightness value to a preset second brightness value.

S205. Turn off the projector when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the light machine brightness is the second brightness value. Light machine.

Wherein, when the fan speed is less than the second speed value and greater than or equal to the third speed value, if the brightness of the light machine is the second brightness value, at this time, although the fan speed is not lower than the minimum speed, the fan at this time has In abnormal working condition (may be due to mechanical failure of the fan or The electrical failure of the fan), the heat dissipation capability of the fan cannot meet the long-term operation of the optical machine in a semi-bright state. To avoid overheating of the projector, the projector's optical machine can be turned off.

The reason why the brightness of the optical machine is the second brightness value is that the fan speed is still above the minimum speed value. Therefore, the projector is not directly turned off, but a buffer time is added. The time during which the number of times the detection result is the second brightness value is accumulated. The brightness of the optical machine can be accumulated once every 5 seconds, and the second brightness value is accumulated once, and the total time is 120 times, that is, the buffering time is 10 minutes. Of course, other buffering time can also be set, which is not limited in this embodiment. .

Optionally, when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the brightness of the light machine is the second brightness value, The brightness of the light machine is lowered from the second brightness value to the third brightness value, that is, the brightness of the light machine is reduced to a slightly bright state.

S206, when the battery temperature is lower than a preset first temperature value, and the battery temperature is higher than or equal to a preset second temperature value, and the brightness of the light machine is a preset first brightness value, The brightness of the light machine is reduced from the first brightness value to a preset second brightness value.

S207. When the brightness of the optical machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, turning off the projector Light machine.

Wherein, when the brightness of the light machine is at the second brightness value, the light machine does not work at full load, and the temperature inside the projector should be within the normal temperature range. If the battery temperature is still in the high temperature charging area, the battery temperature is still first. Between the temperature value and the second temperature value indicates that the projector has a safety hazard of overheating. In order to ensure the projector works safely, you can take the projector's light machine off. When the projector temperature drops to normal, start the projector again.

The reason why the battery temperature is continuously monitored within a preset time is that a process is required in consideration of the battery temperature drop. Therefore, instead of directly turning off the projector's light machine, a buffer time is added, and the buffer time is the preset. The time can be set to 3 minutes or 5 minutes or 10 minutes or 15 minutes and so on. If the battery temperature is still between the first temperature value and the second temperature value within a preset time, it indicates that the battery temperature cannot be expected to be lowered to the normal temperature charging area, and for safety reasons, the projector can be turned off. When the projector temperature drops to normal, start the projector again.

Optionally, when the brightness of the optical machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, the light may also be The brightness of the machine is reduced from the second brightness value to the third brightness value, that is, the brightness of the light machine is reduced to a slightly bright state.

Please refer to FIG. 3. FIG. 3 is a schematic flowchart of another method for safely working a projector according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:

S301. Detect a fan speed of a fan of the projector.

S302. Detect a battery temperature of the built-in battery of the projector.

S303. Detect the brightness of the optomechanism of the projector of the projector.

S304, when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the light machine brightness is a preset first brightness value, The brightness of the light machine is reduced from the first brightness value to a preset second brightness value.

S305. Turn off the projector when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the light machine brightness is the second brightness value. Light machine.

S306. When the fan speed is less than the third speed value, turn off the projector of the projector.

The third speed value is the minimum speed value of the preset fan. When the fan speed is less than the minimum speed value, the fan has an abnormality. To ensure the safety of the projector, the projector turns off the light machine. It should be noted that if the fan speed is lower than the third speed value, regardless of the brightness of the light machine, and regardless of the battery temperature, the battery needs to be turned off for safety reasons.

S307. When the battery temperature is lower than a preset first temperature value, and the battery temperature is higher than or equal to a preset second temperature value, and the brightness of the light machine is a preset first brightness value, The brightness of the light machine is reduced from the first brightness value to a preset second brightness value.

S308. When the brightness of the optical machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, turning off the projector Light machine.

S309. Turn off the projector of the projector when the battery temperature is higher than or equal to the first temperature value.

Wherein, the battery temperature is higher than or equal to the first temperature value, indicating that the battery temperature is already in the forbidden charging zone. At this time, regardless of the brightness of the light machine, and regardless of the fan speed, the fan speed value is for safety considerations. Both need to turn off the light machine.

Optionally, the reducing the brightness of the optical machine from the first brightness value to the preset second brightness value comprises: outputting the brightness of the light machine from the first brightness value to a preset a prompt message of the second brightness value; reducing the brightness of the light machine from the first brightness value to a preset second brightness value.

The output prompt message may be a text message, a voice message, or a graphic message, and may be directly output to a user interface.

In the foregoing implementation manner, by outputting a prompt message to the user interface, it is beneficial to enhance the user's Experience and keep the user informed of the working condition of the projector.

Optionally, a projector safe working method, further comprising: detecting a continuous turn-on time of the light machine; and if the continuous turn-on time is greater than or equal to a preset time, turning off the light machine of the projector.

The optical projector is continuously working on the projector. If the battery is not powered, don't worry, because the battery can't be supported for too long, but if it is powered by an external power adapter, it will bring the risk to the battery inside the projector. In this state, the battery will remain fully charged for a long time, and will not enter the charging and will not discharge to the outside. At this time, it is equivalent to the high-temperature battery stored for a long time, and the battery will generate a large amount of gas due to the high temperature. It will induce a bulge, and even a lithium battery will induce an explosion. To this end, the device requires the necessary restrictions on long-term projection work. A better balance time between limiting the projection working time and not affecting the user's use is that the daily projection continues to work between 8 and 12 hours. The following takes 12 hours as an example to illustrate the scene:

Scenes:

1. The continuous state of the optical machine is greater than or equal to 12 hours;

2. The brightness of the light machine is any brightness;

3. User interface output prompt message "The projector will be turned off to avoid overheating. We strongly recommend that the projector be turned on again after cooling."

The beneficial effect of the embodiment is that, on the one hand, even if the viewer forgets to turn off the power, the device will be forcibly turned off, and on the other hand, in order not to affect the user experience, the prompt interface will give the user the opportunity to intervene if the user cuts down the light machine in the countdown. Select to continue to use before the prompt, the user can use; if the user does not intervene in the countdown, it will shut down directly.

Optionally, a safe working method for the projector, including battery charging detection.

The charging process of the large-capacity battery will take a long time. If the charging process will produce a large amount of heat at the same time, if the battery temperature continues to be higher than the above second temperature value (generally 45 degrees), the device risk will also increase; in addition, the large-capacity battery Long-term use has a life limit (mainly accumulated bulge or gas overrun or low charge and discharge efficiency, etc.). The following description of the scene:

scene 1:

1. Insert the charger;

2. The battery temperature is greater than or equal to the second temperature value;

3. The battery voltage is greater than or high temperature charging limit value (usually the battery high temperature charging should limit the current limit, the pressure limit value will be lower than the full pressure value).

4. The machine preferentially drops the battery voltage from the battery to the high temperature charging limit value; after the battery voltage drops to the high temperature charging limit value, the power is preferentially supplied from the charger.

When the charger is plugged in, the device is powered from the charger and does not supply power from the battery. Therefore, if the battery temperature is above the second temperature value (NTC temperature) when the battery is fully charged, the battery is at a high risk of high temperature storage. However, when the battery voltage value is lower than the high temperature charging voltage limit value, the risk is small. Normally, when the projector's light machine is turned on, the battery temperature will be higher than the second temperature value, so the battery is fully charged and the risk is very small when the light machine is not turned on. Of course, the full-voltage voltage is reduced to the high-temperature charging voltage limit value for a period of time (such as 1.5 hours, which is relatively safe after this time), but due to the short duration, the risk is controllable.

Scene 2:

1. The battery accumulates in the projection on state for a duration of design life;

2. Stop charging the battery, and the user interface outputs a message “We strongly recommend replacing the battery. The projector can only work under the power supply of the external charging adapter”, the light switcher.

According to the opening time of the optical machine, the battery is exposed to a continuous high temperature environment. If the time exceeds the theoretical drum rupture or the sudden change of the air pressure, the battery is stopped, prompting the user to directly supply power or replace the battery with an external power source.

Please refer to FIG. 4. FIG. 4 is a schematic flowchart of another projector security work according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

Start S401;

In the first step S402, it is determined whether the fan speed is less than the third speed value. If not, the branch one and the branch two are executed; if yes, the branch three is executed (the processing of the branch three and the third step of the branch two) After the same);

Branch one:

In the first step S403, it is determined whether the fan speed is less than the first speed value, and if yes, the second step is performed; if not, the normal working state is exited;

In the second step S404, it is determined whether the brightness of the light machine is the first brightness value, and if so, the third step is performed; if not, the first brightness value is detected as 0 times, and the fourth step is performed;

In step S405, the first luminance value is accumulated.

In the fourth step S406, it is determined whether the number of times of the first brightness value is more than a preset positive integer, and if not, the fifth step is performed;

In the fifth step S407, the prompt message is output, the brightness of the optical machine is reduced to the second brightness value, and the branch 2 is performed.

Branch two:

In the first step S408, it is determined whether the fan speed is less than the second speed value, and if yes, the second step is performed; if not, the normal working state is exited;

In the second step S409, it is determined whether the brightness of the light machine is the second brightness value, and if so, the third step is performed; if not, the second brightness value is detected as 0 times, and the fourth step is performed;

In the third step S410, the second luminance value is accumulated.

In the fourth step S411, it is determined whether the number of times of the second brightness value is more than a preset positive integer, if the super-continuation does not continue to accumulate; if it is exceeded, the fifth step is performed;

In the fifth step S412, a prompt message is output, and the light is turned off.

Branch three:

The third step S410 of the same branch 2, the fourth step S411, and the fifth step S412.

End S413.

It should be noted that, in the fourth step S406 and S411 mentioned in the branch one and the second branch, it is determined whether the second brightness value number is accumulated over a preset positive integer, and may be set to be, for example, 80 times or 100 or 120 positive integers.

The following is a detailed description of Figure 4 for a specific scenario:

scene 1:

1. Fan speed setting value: the first speed value (ie the maximum speed, based on the temperature of the machine is the highest temperature condition);

2. Check the fan speed every 3 seconds. After 120 consecutive checks, the actual fan speed detection value is greater than 80% duty cycle, and the current fan speed is less than 98% duty cycle;

3. The current brightness of the light machine is the first brightness value;

4. The user interface outputs a prompt message "The projector adjusts the brightness to avoid overheating of the device", and the brightness of the light machine is reduced to the second brightness value.

Scene 2:

2. Check the fan speed every 5 seconds. After 120 consecutive checks, the actual fan speed detection value is greater than 80% duty cycle of the current fan speed, and the current fan speed is less than 98% duty cycle;

3. The current brightness of the light machine is the second brightness value.

4. Normal work.

In this case, it indicates that the fan should not reach the third speed value for 10 minutes, but the fan is actually abnormal. However, considering that the fan has not entered a completely abnormal state, it is easy to cause user experience, so add one. The buffering time on the stepping speed monitoring, which is the 80% duty ratio in this embodiment, and may be other such as 85% duty ratio or 88% duty ratio, and the like.

Scene 3:

1. Fan speed setting value: the first speed value (ie the maximum speed, based on the temperature of the optical machine is the most High temperature condition);

2. Check the fan speed every 6 seconds. After 100 consecutive checks, the actual fan speed detection value is greater than 60% duty cycle of the current fan speed, and the current fan speed is less than 80% duty cycle;

3. The current brightness of the light machine is the second brightness value.

4. The user interface outputs a prompt message "The projector will be turned off to avoid overheating. Please contact customer service for assistance" to turn off the optical machine.

Scene 4:

2. Check the fan speed every 8 seconds. After continuously checking 80 times, the actual fan speed detection value is the current fan speed less than or equal to 60% duty cycle;

3. The current brightness of the optical machine is any brightness;

At the maximum speed, only the speed is below 60% duty cycle, indicating that the fan has a problem, you need to contact the projector equipment manufacturer for help (replace the fan, etc.).

Referring to FIG. 5, FIG. 5 is a schematic flowchart of another method for safely operating a projector according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:

Start S501;

In the first step S502, it is determined whether the battery temperature is greater than the second temperature value, and if so, the second step is performed; if not, the normal operation is performed and the process is exited;

In the second step S503, it is determined whether the brightness of the light machine is the first brightness value, and if so, the third step is performed; if not, the fourth step is performed;

In a third step S504, a prompt message is output, and the brightness of the optical machine is reduced to a second brightness value;

In the fourth step S505, it is determined whether the brightness of the light machine is the second brightness value, and if so, the fifth step is performed; if not, the sixth step is performed;

In the fifth step S506, after the preset time is run, the prompt message is output, and the light closing machine is output; during the preset time operation, the sixth step may be directly executed; wherein the preset time may be two hours, or one hour or half hour may be preset. Or at other times, there is no limit to this.

In step S507, it is determined whether the battery temperature is greater than the first temperature value, and if yes, performing the seventh step; if not, performing the first step;

The seventh step S508, the light off machine.

End S509.

The following specifically describes Figure 5 for a specific detection scenario:

scene 1:

1. Check the battery temperature every 5 seconds, continuously detect 36 times, take 36 times to check the average value of the current battery temperature, such as the current battery temperature is greater than or equal to the second temperature value, and the current battery temperature is less than the first temperature value;

2. The current brightness of the light machine is the first brightness value;

3. The user interface appears “Projector reduces the brightness of the light machine to avoid overheating of the device”, and the brightness of the light machine drops to the second brightness value.

Scene 2:

1. Check the battery temperature every 3 seconds, continuously check 40 times, take 40 times to check the average value of the current battery temperature, such as the current battery temperature is greater than the second temperature value, and the current battery temperature is less than the first temperature value;

2. The current brightness of the light machine is the second brightness value;

3. Check the battery temperature every 5 seconds. If the battery temperature continues for a certain period of time (such as 2 hours), the current battery temperature is greater than the second temperature value, and the current battery temperature is less than the first temperature value;

4. The user interface appears "The projector will be turned off to avoid overheating. We strongly recommend waiting for projection. After the instrument cools down, turn it on again, turn off the light machine.

Scene 3:

1. Check the battery temperature every 5 seconds, continuously check 36 times, take 36 times to check the average value of the current battery temperature, such as the current battery temperature is greater than or equal to the first temperature value;

2. The user interface appears “The projector will turn off to avoid overheating” and turn off the optical machine.

It should be noted that if the current battery temperature is greater than or equal to the first temperature value, a prompt message is displayed on the user interface, such as the user has no feedback for a few seconds, such as lasting 3 seconds, 5 seconds, 8 seconds, or 10 seconds, etc. Then turn off the light machine directly. Because of this, there is a large risk of overheating, so the user is not prompted to intervene, and the machine is turned off directly after the countdown.

Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a projector safety working device according to an embodiment of the present invention. As shown in FIG. 6, the projector safety working device 600 includes:

The first detecting module 601 is configured to detect a fan speed of the fan of the projector;

a second detecting module 602, configured to detect a battery temperature of the built-in battery of the projector;

a third detecting module 603, configured to detect a brightness of the light machine of the projector of the projector;

The first execution module 604 is configured to: when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the brightness of the light machine is a preset first a brightness value, the brightness of the light machine is reduced from the first brightness value to a preset second brightness value;

The second execution module 605 is configured to: when the battery temperature is lower than a preset first temperature value, and the battery temperature is higher than or equal to a preset second temperature value, and the brightness of the optical machine is preset The first brightness value decreases the brightness of the light machine from the first brightness value to a preset second brightness value.

Optionally, please refer to FIG. 7. FIG. 7 is a schematic structural diagram of another projector safety working device according to an embodiment of the present invention. As shown in FIG. 7, on the basis of FIG. 6, the projector safety working device 600 is provided. Also includes:

The third execution module 606 is configured to: when the fan speed is less than the second speed value, and The fan speed is greater than or equal to a preset third speed value, and the brightness of the light machine is the second brightness value, and the brightness of the light machine is reduced from the second brightness value to a preset third brightness value. Value, or turn off the projector's light machine;

a fourth execution module 607, configured to: when the brightness of the optical machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, The brightness of the optomechana is lowered from the second brightness value to a preset third brightness value, or the optomechanism of the projector is turned off.

Optionally, please refer to FIG. 8. FIG. 8 is a schematic structural diagram of another projector safety working device according to an embodiment of the present invention. As shown in FIG. 8, on the basis of FIG. 7, the projector safety working device 600 is provided. Also includes:

a fifth execution module 608, configured to turn off the optical machine of the projector when the fan speed is less than the third speed value;

The sixth execution module 609 is configured to turn off the projector of the projector when the battery temperature is higher than or equal to the first temperature value.

Optionally, the third execution module 606 is configured to: when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the brightness of the light machine is The cumulative number of times the second brightness value is greater than or equal to a preset positive integer, and the brightness of the light machine is reduced from the second brightness value to a preset third brightness value.

Optionally, the third execution module 606 is configured to: when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the brightness of the light machine is The cumulative number of times of the second brightness value is greater than or equal to a preset positive integer, and the projector of the projector is turned off.

Optionally, the fourth execution module 607 is configured to: when the brightness of the optical machine is the second brightness value, and the battery temperature is lower than the first temperature value within a preset time, and The battery temperature is higher than the second temperature value, and the brightness of the light machine is lowered from the second brightness value to a preset third brightness value.

Optionally, the fourth execution module 607 is configured to when the brightness of the optical machine is the second bright a degree value, and the battery temperature is lower than the first temperature value for a preset time, and the battery temperature is higher than the second temperature value, turning off the projector of the projector.

Optionally, please refer to FIG. 9. FIG. 9 is a schematic structural diagram of another projector safety working device according to an embodiment of the present invention. As shown in FIG. 9, on the basis of FIG. 6, the projector safety working device 600 is provided. Also includes:

The fourth detecting module 610 is configured to detect a continuous turn-on time of the optical machine;

The seventh executing module 611 is configured to turn off the projector of the projector if the continuous opening time is greater than or equal to a preset time.

Optionally, the second detecting module 602 is configured to perform temperature detection on the built-in battery of the projector every time interval, continuously detecting N times, and using an average value of the N times of detection results as the built-in battery. The battery temperature, the N times is a positive integer set in advance.

Optionally, please refer to FIG. 10. FIG. 10 is a schematic structural diagram of another projector security working device according to an embodiment of the present invention. As shown in FIG. 10, on the basis of FIG. 8, the fifth execution module is provided. 608 includes:

The first output unit 6081 is configured to output a prompt message for turning off the optical machine when the fan speed is less than the third speed value;

The determining unit 6082 is configured to determine whether an instruction input by the user in response to the prompt message is received within a preset time period after outputting the prompt message;

The first execution subunit 6083 is configured to: close the optical machine of the projector when the user does not receive an instruction to input the prompt message within a preset time period after outputting the prompt message.

Optionally, please refer to FIG. 11. FIG. 11 is a schematic structural diagram of another projector security working device according to an embodiment of the present invention. As shown in FIG. 11, the first execution module is based on FIG. 604 includes:

The second output unit 6041 is configured to: when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the brightness of the light machine is preset a first brightness value, outputting a prompt message for reducing the brightness of the light machine from the first brightness value to a preset second brightness value;

The second execution subunit 6042 is configured to reduce the brightness of the optical machine from the first brightness value to a preset second brightness value.

In this embodiment, the projector safe working device 600 may be implemented in the embodiment shown in FIG. 1 to FIG. 5, that is, the methods provided in the embodiments shown in FIG. 1 to FIG. 5 may be safe by the projector. The work device 600 is implemented, and the same technical effects can be achieved, and details are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

It will be understood by those skilled in the art that all or part of the steps of implementing the above embodiments may be performed by hardware associated with program instructions, which may be stored in a computer readable medium, including when executed, including The following steps:

Detecting a fan speed of a fan of the projector;

Detecting a battery temperature of the built-in battery of the projector;

Detecting the brightness of the optomechanical machine of the projector;

When the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the brightness of the light machine is a preset first brightness value, the optical machine is The brightness is decreased from the first brightness value to a preset second brightness value;

Optionally, it also includes:

When the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the light machine brightness is the second brightness value, the brightness of the light machine is The second brightness value is lowered to a preset third brightness value, or the projector of the projector is turned off;

When the brightness of the light machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, the brightness of the light machine is taken from The second brightness value is lowered to a preset third brightness value, or the projector of the projector is turned off.

Optionally, it also includes:

Turning off the projector of the projector when the fan speed is less than the third speed value;

When the battery temperature is higher than or equal to the first temperature value, the projector of the projector is turned off.

Optionally, the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the light machine brightness is the second brightness value, including :

When the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the cumulative number of times the light machine brightness is the second brightness value is greater than or equal to a preset Positive integer.

Optionally, when the brightness of the optical machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, the method includes:

When the brightness of the light machine is the second brightness value, and within a preset time, the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value.

Optionally, it also includes:

Detecting a continuous on time of the optical machine;

If the continuous on time is greater than or equal to the preset time, the projector of the projector is turned off.

Optionally, the detecting the battery temperature of the projector's built-in battery includes:

Performing temperature detection on the built-in battery of the projector every unit time, continuously detecting N times, using the average value of the N times of detection results as the battery temperature of the built-in battery, the N times being a preset positive integer .

Optionally, the optical machine that turns off the projector includes:

Outputting a prompt message to turn off the optical machine;

Determining whether a command input by the user in response to the prompt message is received within a preset time period after outputting the prompt message, and if not, turning off the light machine of the projector.

Optionally, the reducing the brightness of the optical machine from the first brightness value to the preset second brightness value comprises:

Outputting a prompt message for reducing the brightness of the optical machine from the first brightness value to a preset second brightness value;

The brightness of the optomechana is lowered from the first brightness value to a preset second brightness value.

The storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Industrial applicability

As described above, a projector safe working method and apparatus provided by the embodiments of the present invention have the following beneficial effects: combining the fan speed of the fan, the battery temperature of the built-in battery, and the brightness of the optical machine when the projector is working. Detection helps maintain the internal temperature of the projector at a long-term safe level.

Claims

A safe working method for a projector, comprising:

Detecting a fan speed of a fan of the projector;

Detecting a battery temperature of the built-in battery of the projector;

Detecting the brightness of the optomechanical machine of the projector;

When the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the brightness of the light machine is a preset first brightness value, the optical machine is The brightness is decreased from the first brightness value to a preset second brightness value;

When the battery temperature is lower than a preset first temperature value, and the battery temperature is higher than or equal to a preset second temperature value, and the brightness of the light machine is a preset first brightness value, The brightness of the light machine is reduced from the first brightness value to a preset second brightness value.
The method of claim 1 wherein the method further comprises:

When the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the light machine brightness is the second brightness value, the brightness of the light machine is The second brightness value is lowered to a preset third brightness value, or the projector of the projector is turned off;

When the brightness of the light machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, the brightness of the light machine is taken from The second brightness value is lowered to a preset third brightness value, or the projector of the projector is turned off.
The method of claim 2, wherein the method further comprises:

Turning off the projector of the projector when the fan speed is less than the third speed value;

When the battery temperature is higher than or equal to the first temperature value, the projector of the projector is turned off.
The method of claim 2, wherein the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the brightness of the light machine is The second brightness value includes:

When the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the cumulative number of times the light machine brightness is the second brightness value is greater than or equal to a preset Positive integer.
The method of claim 2, wherein said brightness of said light machine is said second brightness value, and said battery temperature is lower than said first temperature value, and said battery temperature is higher than said The second temperature value includes:

When the brightness of the light machine is the second brightness value, and within a preset time, the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value.
The method of any of claims 1 to 5, wherein the method further comprises:

Detecting a continuous on time of the optical machine;

If the continuous on time is greater than or equal to the preset time, the projector of the projector is turned off.
The method according to any one of claims 1 to 5, wherein the detecting the battery temperature of the built-in battery of the projector comprises:

Performing temperature detection on the built-in battery of the projector every unit time, continuously detecting N times, using the average value of the N times of detection results as the battery temperature of the built-in battery, the N times being a preset positive integer .
The method of claim 2 or 3, wherein said turning off the projector of said projector comprises:

Outputting a prompt message to turn off the optical machine;

Determining whether a command input by the user in response to the prompt message is received within a preset time period after outputting the prompt message, and if not, turning off the light machine of the projector.
The method of claim 1, wherein the reducing the brightness of the light machine from the first brightness value to a preset second brightness value comprises:

The output reduces the brightness of the light machine from the first brightness value to a preset second brightness value Prompt message;

The brightness of the optomechana is lowered from the first brightness value to a preset second brightness value.
A projector safe working device, comprising:

a first detecting module configured to detect a fan speed of the fan of the projector;

a second detecting module configured to detect a battery temperature of the built-in battery of the projector;

a third detecting module, configured to detect a brightness of the light machine of the projector of the projector;

a first execution module, configured to: when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the brightness of the light machine is a preset first brightness a value, the brightness of the light machine is reduced from the first brightness value to a preset second brightness value;

a second execution module, configured to: when the battery temperature is lower than a preset first temperature value, and the battery temperature is higher than or equal to a preset second temperature value, and the brightness of the optical machine is a preset a brightness value that reduces the brightness of the light machine from the first brightness value to a preset second brightness value.
The device of claim 10, wherein the device further comprises:

a third execution module, configured to: when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and the brightness of the light machine is the second brightness value, Decreasing the brightness of the light machine from the second brightness value to a preset third brightness value, or turning off the light machine of the projector;

a fourth execution module, configured to: when the brightness of the light machine is the second brightness value, and the battery temperature is lower than the first temperature value, and the battery temperature is higher than the second temperature value, The brightness of the light machine is lowered from the second brightness value to a preset third brightness value, or the light machine of the projector is turned off.
The apparatus of claim 11 wherein said apparatus further comprises:

a fifth execution module, configured to turn off the projector of the projector when the fan speed is less than the third speed value;

And a sixth execution module, configured to turn off the projector of the projector when the battery temperature is higher than or equal to the first temperature value.
The apparatus according to claim 11, wherein the third execution module is configured to: when the fan speed is less than the second speed value, and the fan speed is greater than or equal to a preset third speed value, and The brightness of the light machine is such that the cumulative number of times of the second brightness value is greater than or equal to a preset positive integer, the brightness of the light machine is reduced from the second brightness value to a preset third brightness value, or the The projector's optomechanical machine.
The apparatus according to claim 11, wherein said fourth execution module is configured to: when said brightness of said light machine is said second brightness value, and said battery temperature is lower than said first time a temperature value, and the battery temperature is higher than the second temperature value, reducing the brightness of the light machine from the second brightness value to a preset third brightness value, or turning off the light machine of the projector .
The device of any of claims 10 to 14, wherein the device further comprises:

a fourth detecting module, configured to detect a continuous opening time of the optical machine;

And a seventh execution module, configured to turn off the projector of the projector if the continuous on time is greater than or equal to a preset time.
The apparatus according to any one of claims 10 to 14, wherein the second detecting module is configured to perform temperature detection on the built-in battery of the projector every time interval, continuously detecting N times, and the N times The average value of the detection results is taken as the battery temperature of the built-in battery, and the N times are positive integers set in advance.
The apparatus of claim 12 wherein said fifth execution module comprises:

a first output unit, configured to output a prompt message for turning off the optical machine when the fan speed is less than the third speed value;

a determining unit, configured to determine whether an instruction input by the user in response to the prompt message is received within a preset time period after outputting the prompt message;

The first execution subunit is configured to: close the optical machine of the projector when the user does not receive an instruction to input the prompt message within a preset time period after outputting the prompt message.
The apparatus of claim 10 wherein said first execution module comprises:

a second output unit, configured to: when the fan speed is less than a preset first speed value, and the fan speed is greater than or equal to a preset second speed value, and the brightness of the light machine is a preset first brightness a value, outputting a prompt message that reduces the brightness of the light machine from the first brightness value to a preset second brightness value;

And a second execution subunit, configured to reduce the brightness of the optical machine from the first brightness value to a preset second brightness value.