Projection device heat dissipation control method and apparatus, and projection device
By acquiring the light source temperature and calculating the average temperature in the projection device, and adjusting the fan speed to regulate heat dissipation, the problem of large space occupation by the ambient temperature sensor in traditional methods is solved, and the miniaturization and high integration of the projection device are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FORMOVIE (CHONGQING) INNOVATIVE TECH CO LTD
- Filing Date
- 2023-04-17
- Publication Date
- 2026-07-10
Smart Images
Figure CN116560170B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of projection equipment technology, and in particular to a projection equipment heat dissipation control method, apparatus and projection equipment. Background Technology
[0002] With the development of science and technology, projection devices are becoming increasingly popular and can be used in various scenarios such as offices, homes, and public places. During use, it is necessary to ensure that the projection device can operate normally under different ambient temperatures. Therefore, it is necessary to adjust the fan speed of the projection device according to changes in ambient temperature to adjust the heat dissipation and maintain normal operation of the projection device under different ambient temperatures.
[0003] Traditional methods typically require an ambient temperature sensor at the air inlet of the projection device. The ambient temperature collected by this sensor, along with the light source temperature measured by an internal sensor, are used to determine whether fan speed needs adjustment for heat dissipation. However, this method necessitates an additional ambient temperature sensor, resulting in a larger space requirement and hindering the development of smaller, more integrated projection devices. Summary of the Invention
[0004] Therefore, it is necessary to provide a projection device heat dissipation control method, apparatus, projection device, computer-readable storage medium, and computer program product that can improve the integration of projection devices in order to address the above-mentioned technical problems.
[0005] Firstly, this application provides a method for controlling heat dissipation in a projection device. The method includes:
[0006] Obtain the light source temperature of each light source in the projection device;
[0007] Determine the average temperature of each of the aforementioned light sources;
[0008] The light source temperature and the average temperature of each light source are compared with the corresponding preset thresholds to determine whether the preset fan adjustment conditions are met.
[0009] Under the condition that the preset fan adjustment conditions are met, the speed of the fan in the projection device is adjusted to adjust the heat dissipation of the projection device;
[0010] The preset threshold corresponding to the light source temperature of each light source is determined based on the light source test temperature obtained by testing the light source temperature of each reference projection device under a preset ambient temperature; the preset threshold corresponding to the average temperature is determined based on the average of the test temperatures of each light source.
[0011] Secondly, this application also provides a heat dissipation control device for a projection device. The device includes:
[0012] Temperature acquisition module, used to acquire the light source temperature of each light source in the projection device;
[0013] The average temperature determination module is used to determine the average temperature of each of the light sources.
[0014] The comparison module is used to compare the light source temperature and the average temperature of each light source with the corresponding preset threshold to determine whether the preset fan adjustment conditions are met.
[0015] The fan adjustment module is used to adjust the fan speed in the projection device under the condition that the preset fan adjustment conditions are met, so as to adjust the heat dissipation of the projection device.
[0016] The preset threshold corresponding to the light source temperature of each light source is determined based on the light source test temperature obtained by testing the light source temperature of each reference projection device under a preset ambient temperature; the preset threshold corresponding to the average temperature is determined based on the average of the test temperatures of each light source.
[0017] In one embodiment, the preset fan adjustment conditions include preset fan speed increase conditions;
[0018] The comparison module is also used to determine that the preset fan speed increase condition is met when at least one of the light source temperature and the average temperature of each light source is greater than or equal to the corresponding preset threshold.
[0019] The fan adjustment module is also used to increase the speed of the fan in the projection device when the preset fan speed increase conditions are met, so as to adjust the heat dissipation of the projection device.
[0020] In one embodiment, the preset fan adjustment conditions include preset fan downshift conditions;
[0021] The comparison module is also used to determine that the preset fan downshift condition is met when the light source temperature and the average temperature of each light source are both less than the corresponding preset threshold.
[0022] The fan adjustment module is also used to reduce the speed of the fan in the projection device when the preset fan downshifting conditions are met, so as to adjust the heat dissipation of the projection device.
[0023] In one embodiment, the comparison module is further configured to determine the current speed setting of the fan in the projection device; determine the preset thresholds corresponding to the light source temperature and the average temperature of each light source at the current speed setting; and compare the light source temperature and the average temperature of each light source with the corresponding preset thresholds at the current speed setting to determine whether the preset fan adjustment conditions are met.
[0024] In one embodiment, the device further includes:
[0025] The preset threshold determination module is used to perform light source temperature tests on each reference projection device under a preset ambient temperature, obtain the light source test temperature of each light source in each reference projection device, and determine the average test temperature corresponding to each reference projection device based on the light source test temperature; determine the maximum and minimum temperature values corresponding to each light source based on the light source test temperature of the same light source in each reference projection device, and determine the maximum and minimum average test temperatures based on the average test temperatures corresponding to each reference projection device; determine the preset threshold corresponding to each light source based on the maximum temperature value corresponding to each light source, and determine the preset threshold corresponding to the average temperature based on the average of the maximum and minimum average test temperatures.
[0026] In one embodiment, the preset threshold determination module is further configured to determine a correction value corresponding to each of the light sources based on the distribution of the light source test temperatures corresponding to each of the light sources, and to determine a correction value corresponding to the average temperature based on the distribution of the average test temperatures corresponding to each of the reference projection devices; to determine a preset threshold corresponding to each of the light sources based on the maximum temperature value and the corresponding correction value; and to determine the preset threshold corresponding to the average temperature based on the average of the maximum test temperature and the average of the minimum test temperature, and the correction value corresponding to the average temperature.
[0027] In one embodiment, the preset threshold determination module is further configured to determine the average test temperature of each reference projection device based on the test temperature of each light source other than the abnormal light source if the test temperature distribution of the light source corresponding to the abnormal light source is abnormal.
[0028] In one embodiment, there are multiple preset ambient temperatures; each preset ambient temperature corresponds to a different fan speed setting; the preset threshold values corresponding to each of the light sources and the preset threshold values corresponding to the average temperature obtained at the preset ambient temperature are preset threshold values at the fan speed settings corresponding to the preset ambient temperature.
[0029] Thirdly, this application also provides a projection device. The projection device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it causes the processor to perform the steps in the heat dissipation control method for the projection device described in the embodiments of this application.
[0030] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, causes the processor to perform the steps in the heat dissipation control method for projection devices described in the embodiments of this application.
[0031] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, causes the processor to perform the steps in the heat dissipation control method for projection devices described in the embodiments of this application.
[0032] The aforementioned projection device heat dissipation control method, apparatus, projection device, storage medium, and computer program product pre-test the light source temperature of each reference projection device under a preset ambient temperature to obtain preset thresholds corresponding to the light source temperature and the average temperature of each light source. This allows for comparison of the light source temperature and the average temperature of each light source with their respective preset thresholds to determine whether the ambient temperature has reached the condition for adjusting the fan speed. Therefore, only the light source temperature of each light source in the projection device needs to be collected to determine whether to adjust the fan speed, eliminating the need for an additional ambient temperature sensor. This reduces the size of the projection device and improves its integration. Attached Figure Description
[0033] Figure 1 This is an application environment diagram of a projection device heat dissipation control method in one embodiment;
[0034] Figure 2 This is a flowchart illustrating a heat dissipation control method for a projection device in one embodiment;
[0035] Figure 3 This is a schematic diagram of the process of increasing the fan speed in one embodiment;
[0036] Figure 4 This is a schematic diagram of the process of reducing the fan speed in one embodiment;
[0037] Figure 5 This is a structural block diagram of a heat dissipation control device for a projection device in one embodiment;
[0038] Figure 6 This is a structural block diagram of the heat dissipation control device for a projection device in another embodiment;
[0039] Figure 7 This is an internal structural diagram of a projection device in one embodiment. Detailed Implementation
[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0041] The heat dissipation control method for projection devices provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, the projection device 102 includes multiple light source temperature sensors 1022, a fan 1024, multiple light sources 1026, and a processor 1028. The processor 1028 of the projection device 102 can acquire the light source temperature of each light source 1026 in the projection device collected by each light source temperature sensor 1022, then determine the average temperature of each light source 1026, and compare the light source temperature and the average temperature of each light source 1026 with corresponding preset thresholds to determine whether preset fan adjustment conditions are met. If the preset fan adjustment conditions are met, the processor 1028 of the projection device 102 can control and adjust the speed of the fan 1024 to adjust the heat dissipation of the projection device 102.
[0042] In some embodiments, such as Figure 2 As shown, a heat dissipation control method for a projection device is provided, which is applied to... Figure 1 Taking the projection device 102 as an example, the following steps are included:
[0043] Step 202: Obtain the light source temperature of each light source in the projection device.
[0044] In this context, a projection device is a device used for projecting images. A light source is a component in the projection device used for illumination. For example, a light source can be an LED (light-emitting diode) or a laser light source within the projection device.
[0045] In some embodiments, the light source may include green, red, and blue lights.
[0046] In other embodiments, the light source may include a green light, a red light, a blue light, and a BP light.
[0047] In some embodiments, there may be multiple light source temperature sensors, each corresponding to a specific light source. Each light source temperature sensor in the projection device can collect the temperature of its corresponding light source. The processor in the projection device can obtain the temperature of each light source from each sensor and then execute step 204 and subsequent steps.
[0048] Step 204: Determine the average temperature of each light source.
[0049] In some embodiments, the projection device can perform average processing on the light source temperature of each light source to obtain the average temperature of each light source.
[0050] In some embodiments, the averaging process can be any one of average processing or median processing. Average processing refers to taking the average value of the light source temperatures of all light sources. Median processing refers to taking the median value of the light source temperatures of all light sources.
[0051] For example, projection equipment can average the temperatures of green, red, blue, and BP lamps to obtain an average temperature.
[0052] Step 206: Compare the light source temperature and average temperature of each light source with the corresponding preset threshold to determine whether the preset fan adjustment conditions are met.
[0053] Each light source has a corresponding preset temperature threshold, and the average temperature also has a corresponding preset threshold. The preset fan adjustment conditions are the pre-defined conditions under which the fan speed needs to be adjusted.
[0054] For example, the projection device can compare the light source temperature and average temperature of the green, red, blue and BP lamps with the corresponding preset thresholds to determine whether the preset fan adjustment conditions are met.
[0055] In some embodiments, the preset fan adjustment conditions include preset fan speed-up conditions. If at least one of the light source temperature and the average temperature of each light source is greater than or equal to a corresponding preset threshold, the projection device can determine that the preset fan speed-up conditions are met, and the projection device can increase the fan speed to adjust the heat dissipation of the projection device.
[0056] In some embodiments, increasing the fan speed can mean increasing the fan speed setting. For example, increasing the fan speed from a low setting to a medium setting, or from a medium setting to a high setting. In other embodiments, increasing the fan speed can mean increasing the fan speed value.
[0057] In some embodiments, increasing the fan speed can be done by increasing the fan speed at preset speed intervals. For example, when a preset fan speed-up condition is met, the fan speed can be increased by 3 revolutions per second. In other embodiments, increasing the fan speed can be done by increasing the fan speed by a calculated speed increase value. The projection device can calculate the speed increase value based on a first temperature difference between a temperature greater than or equal to a corresponding preset threshold and the preset threshold. The larger the first temperature difference, the larger the speed increase value.
[0058] In some embodiments, the preset fan adjustment conditions include preset fan speed reduction conditions. When the light source temperature and average temperature of each light source are both less than the corresponding preset threshold, it is determined that the preset fan speed reduction conditions are met, and the projection device can reduce the fan speed to adjust the heat dissipation of the projection device.
[0059] In some embodiments, reducing the fan speed can be done by reducing the fan speed setting. For example, reducing the fan speed from a high setting to a medium setting, or from a medium setting to a low setting. In other embodiments, reducing the fan speed can be done by reducing the fan speed value.
[0060] In some embodiments, reducing the fan speed can be done by reducing the fan speed at preset speed intervals. For example, when a preset fan speed reduction condition is met, the fan speed can be reduced by 3 revolutions per second. In other embodiments, reducing the fan speed can be done by reducing the fan speed according to a calculated speed reduction value. The projection device can calculate the speed reduction value based on a second temperature difference between the light source temperature and the average temperature of each light source and a corresponding preset threshold. The larger the second temperature difference, the larger the speed reduction value.
[0061] Step 208: Under the condition that the preset fan adjustment conditions are met, adjust the fan speed in the projection device to adjust the heat dissipation of the projection device.
[0062] The preset threshold values for the light source temperatures of each light source are determined based on the light source test temperatures obtained by conducting light source temperature tests on each reference projection device under preset ambient temperatures. The preset threshold value for the average temperature is determined based on the average of the test temperatures of each light source.
[0063] A reference projection device is a projection device used at a stage where a preset threshold is determined in advance. In some embodiments, each reference projection device may be a projection device of the same model.
[0064] In some embodiments, when preset fan adjustment conditions are met, the projection device can determine the current fan speed information. If the current speed information matches the speed information to be adjusted to, the step of adjusting the fan speed in the projection device is not performed; if the current speed information does not match the speed to be adjusted to, the step of adjusting the fan speed in the projection device is performed to adjust the heat dissipation of the projection device. In some embodiments, the current speed information can be the current speed value, and the speed information to be adjusted to can be the speed value to be adjusted to. In other embodiments, the current speed information can be the current speed setting, and the speed information to be adjusted to can be the speed setting to be adjusted to.
[0065] In some embodiments, the light source temperature of each reference projection device can be tested in advance at a preset ambient temperature to obtain the light source test temperature of each light source in each reference projection device. The computer device can acquire the light source test temperature of each light source in each reference projection device and determine the average test temperature corresponding to each reference projection device based on the light source test temperature. The computer device can determine the preset threshold corresponding to the light source temperature of each light source based on the light source test temperature of each light source in each reference projection device, and determine the preset threshold corresponding to the average temperature based on the average test temperature corresponding to each reference projection device.
[0066] The aforementioned heat dissipation control method for projection equipment pre-tests the light source temperature of each reference projection device under a preset ambient temperature to obtain preset thresholds for the light source temperature and the average temperature of each light source. By comparing the light source temperature and average temperature of each light source with their respective preset thresholds, it can determine whether the ambient temperature has reached the condition for adjusting the fan speed. Thus, only the light source temperature sensor is needed to collect the light source temperature of each light source in the projection equipment to determine whether to adjust the fan speed, eliminating the need for an additional ambient temperature sensor. This reduces the size of the projection equipment, improves its integration, and lowers the cost. It also ensures that the fan maintains a low speed under low ambient temperatures, balancing the heat dissipation capacity and noise performance of the projection equipment.
[0067] In some embodiments, the preset fan adjustment conditions include preset fan speed increase conditions; comparing the light source temperature and average temperature of each light source with corresponding preset thresholds to determine whether the preset fan adjustment conditions are met includes: determining that the preset fan speed increase conditions are met if at least one of the light source temperature and average temperature of each light source is greater than or equal to the corresponding preset threshold; adjusting the fan speed in the projection device to adjust the heat dissipation of the projection device when the preset fan adjustment conditions are met includes: increasing the speed of the fan in the projection device to adjust the heat dissipation of the projection device when the preset fan speed increase conditions are met.
[0068] In some embodiments, if at least one of the light source temperature and the average temperature of each light source is greater than or equal to the corresponding preset threshold, the projection device can determine that the preset fan speed increase condition is met, and then determine the current fan speed level. If the current fan speed level is inconsistent with the fan speed level to be adjusted, the projection device can increase the fan speed level in the projection device to adjust the heat dissipation of the projection device.
[0069] like Figure 3The diagram shows a flowchart of increasing the fan speed. The projection device can acquire the light source temperature of each light source from the temperature sensors at a preset frequency, calculate the average temperature, and determine the fan speed. The fan speed is determined by the light source temperature and the average temperature (i.e., the average temperature of each light source). Figure 3 If at least one of the following temperatures (T1, T2, T3, and T4, and the average temperature Ta) of light sources A, B, C, and D is greater than or equal to the corresponding preset threshold, the fan speed is increased.
[0070] In the above embodiments, if at least one of the light source temperature and average temperature of each light source is greater than or equal to the corresponding preset threshold, the preset fan speed increase condition is met, and the fan speed in the projection device is increased to adjust the heat dissipation of the projection device. Thus, based on the light source temperature, average temperature, and preset threshold of each light source, it can be determined whether the ambient temperature has reached the condition for increasing the fan speed. Therefore, by simply collecting the light source temperature of each light source in the projection device through a light source temperature sensor, it is possible to accurately determine the need to increase the fan speed when the ambient temperature rises, without the need for an additional ambient temperature sensor. This reduces the size of the projection device and improves its integration.
[0071] In some embodiments, the preset fan adjustment conditions include preset fan speed reduction conditions; comparing the light source temperature and average temperature of each light source with corresponding preset thresholds to determine whether the preset fan adjustment conditions are met includes: determining that the preset fan speed reduction conditions are met when the light source temperature and average temperature of each light source are both less than the corresponding preset thresholds; adjusting the fan speed in the projection device to adjust the heat dissipation of the projection device when the preset fan speed reduction conditions are met includes: reducing the fan speed setting in the projection device to adjust the heat dissipation of the projection device when the preset fan speed reduction conditions are met.
[0072] In some embodiments, when the light source temperature and average temperature of each light source are both less than the corresponding preset threshold, the projection device can determine that the preset fan speed reduction condition is met, and then determine the current fan speed level. If the current fan speed level is inconsistent with the fan speed level to be adjusted, the projection device can reduce the fan speed level in the projection device to adjust the heat dissipation of the projection device.
[0073] like Figure 4 The diagram shows a flowchart of the process for reducing the fan speed. The projection device can acquire the light source temperature of each light source from the light source temperature sensor at a preset frequency, calculate the average temperature, and determine the fan speed. The fan speed is determined by the light source temperature of each light source and the average temperature (i.e., the average temperature of the light source). Figure 3If the temperatures (T1, T2, T3, and T4) and the average temperature (Ta) of light sources A, B, C, and D are all less than the corresponding preset thresholds, the fan speed will be reduced to the appropriate setting.
[0074] In the above embodiments, when the light source temperature and average temperature of each light source are both less than the corresponding preset threshold, the preset fan speed reduction condition is met, and the fan speed in the projection device is reduced to adjust the heat dissipation of the projection device. Thus, based on the light source temperature, average temperature, and preset threshold of each light source, it can be determined whether the ambient temperature has reached the condition for reducing the fan speed. Therefore, by simply collecting the light source temperature of each light source in the projection device through a light source temperature sensor, it is possible to accurately determine the fan speed reduction when the ambient temperature decreases, without the need for an additional ambient temperature sensor. This reduces the size of the projection device and improves its integration.
[0075] In some embodiments, before comparing the light source temperature and average temperature of each light source with corresponding preset thresholds to determine whether the preset fan adjustment conditions are met, the method further includes: determining the current speed setting of the fan in the projection device; determining the preset thresholds corresponding to the light source temperature and average temperature of each light source at the current speed setting; comparing the light source temperature and average temperature of each light source with corresponding preset thresholds to determine whether the preset fan adjustment conditions are met includes: comparing the light source temperature and average temperature of each light source with corresponding preset thresholds at the current speed setting to determine whether the preset fan adjustment conditions are met.
[0076] In some embodiments, the preset threshold corresponding to the light source temperature of each light source at the current speed setting is determined by the light source test temperature obtained by testing the light source temperature of each reference projection device under the preset ambient temperature corresponding to the current speed setting. The preset threshold corresponding to the average temperature at the current speed setting is determined based on the average light source test temperature obtained under the preset ambient temperature corresponding to the current speed setting.
[0077] In the above embodiments, the current fan speed setting in the projection device is determined, and preset thresholds corresponding to the light source temperature and average temperature of each light source at the current speed setting are determined. The light source temperature and average temperature of each light source are compared with the corresponding preset thresholds at the current speed setting to determine whether the preset fan adjustment conditions are met. Thus, for each speed setting, the preset fan adjustment conditions can be accurately determined based on the light source temperature, average temperature, and preset thresholds.
[0078] In some embodiments, before obtaining the light source temperature of each light source in the projection device, the method further includes: performing a light source temperature test on each reference projection device under a preset ambient temperature to obtain the light source test temperature of each light source in each reference projection device, and determining the average test temperature corresponding to each reference projection device based on the light source test temperature; determining the maximum and minimum temperature values corresponding to each light source based on the light source test temperature of the same light source in each reference projection device, and determining the maximum and minimum average test temperatures based on the average test temperatures corresponding to each reference projection device; determining a preset threshold corresponding to each light source based on the maximum temperature value corresponding to each light source, and determining the preset threshold corresponding to the average temperature based on the average of the maximum and minimum average test temperatures.
[0079] The test temperature average is the average test temperature of all light sources in the reference projection equipment. The maximum temperature is the maximum test temperature of the same light source in all reference projection equipment. The minimum temperature is the minimum test temperature of the same light source in all reference projection equipment. The maximum average test temperature is the maximum of the average test temperatures of all reference projection equipment. The minimum average test temperature is the minimum of the average test temperatures of all reference projection equipment.
[0080] In some embodiments, the light source temperature of each light source in each reference projection device can be collected in advance at a preset ambient temperature to obtain the light source test temperature of each light source in each reference projection device at the preset ambient temperature.
[0081] In some embodiments, the computer device can obtain the light source test temperature of each light source in each reference projection device under a preset ambient temperature, and determine the average test temperature of each reference projection device based on the light source test temperature.
[0082] In some embodiments, the computer device can determine the maximum and minimum temperatures corresponding to each light source based on the light source test temperatures of the same light source in each reference projection device. For example, if there are 20 reference projection devices, and the light source temperature of each light source in each reference projection device is tested, the maximum temperature corresponding to the green light is the maximum value among the 20 light source test temperatures of the green light in the 20 reference projection devices.
[0083] For example: Assume that the test temperature ranges of each light source under the preset ambient temperature are [T1], [T2], [T3], [T4], [T5], [T6], [T7], [T8], [T9], [T10], [T11], [T12], [T13], [T14], [T15], [T16], [T17], [T18], [T19], min T1 max [T2] min T2 max [T3] min T3 max ] and [T4min T4 max ], where [T1 min T1 max [T2] represents the temperature range for light source A during testing. min T2 max [T3] represents the temperature range for light source B during testing. min T3 max [T4] represents the temperature range for light source C during testing. min T4 max Let ] be the temperature range for light source D, then the maximum and minimum temperatures corresponding to light source A are T1 and T2, respectively. max and T1 min The maximum and minimum temperatures corresponding to light source B are T2 and T2, respectively. max and T2 min The maximum and minimum temperatures corresponding to light source C are T3 and T3, respectively. max and T3 min The maximum and minimum temperatures corresponding to light source D are T4 and T4, respectively. max and T4 min Assume that the range of the average test temperature corresponding to each reference projection device is [Ta]. min ,Ta max If the average maximum and minimum test temperatures are Ta, then the average maximum and minimum test temperatures are Ta respectively. max and Ta min .
[0084] In some embodiments, the computer device can determine the maximum temperature value corresponding to each light source as the preset threshold value corresponding to each light source. In other embodiments, the computer device can determine the preset threshold value corresponding to each light source based on the maximum temperature value corresponding to each light source and the corresponding correction value. In some embodiments, the computer device can determine the preset threshold value corresponding to each light source based on the sum of the maximum temperature value corresponding to each light source and the corresponding correction value.
[0085] In some embodiments, the computer device can determine the preset threshold corresponding to the average temperature as the average of the maximum and minimum test temperatures. In other embodiments, the computer device can determine the preset threshold corresponding to the average temperature based on the average of the maximum and minimum test temperatures and a corresponding correction value. In some embodiments, the computer device can determine the preset threshold corresponding to the average temperature based on the sum of the average of the maximum and minimum test temperatures and a corresponding correction value.
[0086] In some embodiments, a preset threshold obtained from a computer device can be set in a projection device so that the projection device can control heat dissipation according to the preset threshold.
[0087] In the above embodiments, the light source temperature of each reference projection device is tested under a preset ambient temperature to obtain the light source test temperature of each light source in each reference projection device. The average test temperature of each reference projection device is determined based on the light source test temperature. A preset threshold is determined for each light source based on its maximum temperature. A preset threshold corresponding to the average temperature is determined based on the average of the maximum and minimum average test temperatures. This allows for comparison of the light source temperature and average temperature of each light source with their respective preset thresholds to determine whether the ambient temperature has reached the condition for adjusting the fan speed. Therefore, only the light source temperature sensor is needed to collect the light source temperature of each light source in the projection device to determine whether to adjust the fan speed, eliminating the need for an additional ambient temperature sensor. This reduces the size of the projection device and improves its integration. Furthermore, determining the preset threshold for each light source based on its maximum temperature avoids the problem of individual light sources exceeding the preset threshold due to poor heat dissipation, causing the fan to increase its speed prematurely, thus improving the accuracy of heat dissipation control.
[0088] In some embodiments, determining a preset threshold corresponding to each light source based on the maximum temperature value corresponding to each light source, and determining a preset threshold corresponding to the average temperature based on the average of the maximum and minimum test temperatures, includes: determining a correction value corresponding to each light source based on the distribution of the test temperatures corresponding to each light source, and determining a correction value corresponding to the average temperature based on the distribution of the average test temperatures corresponding to each reference projection device; determining a preset threshold corresponding to each light source based on the maximum temperature value and the corresponding correction value; and determining a preset threshold corresponding to the average temperature based on the average of the maximum and minimum test temperatures and the correction value corresponding to the average temperature.
[0089] In some embodiments, when the temperature distribution of the light source is concentrated within a preset range of the maximum temperature, the correction value corresponding to the light source can be a positive number. When the temperature distribution of the light source is concentrated within a preset range of the minimum temperature, the correction value corresponding to the light source can be a negative number.
[0090] In some embodiments, the higher the concentration of the light source test temperature within a preset range of the maximum temperature value, the larger the correction value for the light source. Conversely, the higher the concentration of the light source test temperature within a preset range of the minimum temperature value, the smaller the correction value for the light source.
[0091] In some embodiments, when the distribution of the average test temperatures of each reference projection device is concentrated within a preset range of the maximum average test temperature, the correction value corresponding to the average temperature can be a positive number. When the distribution of the average test temperatures of each reference projection device is concentrated within a preset range of the minimum average test temperature, the correction value corresponding to the average temperature can be a negative number.
[0092] In some embodiments, the higher the concentration of the average test temperature of each reference projection device within a preset range of the maximum average test temperature, the larger the correction value corresponding to the average temperature. Conversely, the higher the concentration of the average test temperature of each reference projection device within a preset range of the minimum average test temperature, the smaller the correction value corresponding to the average temperature.
[0093] In some embodiments, the computer device can determine the preset threshold corresponding to each light source based on the sum of the maximum temperature value corresponding to each light source and the corresponding correction value.
[0094] In some embodiments, the computer device may determine a preset threshold corresponding to the average temperature based on the sum of the average of the maximum and minimum test temperatures and the correction value corresponding to the average temperature.
[0095] In some embodiments, the calculation formulas for the preset threshold corresponding to each light source and the preset threshold corresponding to the average temperature are as follows:
[0096] P1 = T1 max +L1; (1)
[0097] P2 = T2 max +L2; (2)
[0098] P3 = T3 max +L3; (3)
[0099] P4 = T4 max +L4; (4)
[0100] P5 = (Ta min +Ta max ) / 2+L5;(5)
[0101] Among them, T1 max T2 max T3 max and T4 max These are the maximum temperatures corresponding to each light source. max and Ta minThese are the average maximum and minimum test temperatures, respectively. L1, L2, L3, and L4 are the correction values for each light source. L5 is the correction value for the average temperature. P1, P2, P3, and P4 are the preset thresholds for each light source. P5 is the preset threshold for the average temperature.
[0102] In the above embodiments, the correction value corresponding to each light source is determined according to the distribution of the test temperature of each light source, and the correction value corresponding to the average temperature is determined according to the distribution of the average test temperature of each reference projection device. Then, the preset threshold is adjusted according to the correction value to obtain a more accurate preset threshold, ensuring that the projection device can maintain the fan speed without increasing the gear under the preset ambient temperature.
[0103] In some embodiments, determining the average test temperature of each reference projection device based on the light source test temperature includes: if there is an abnormal light source corresponding to an abnormal light source, then determining the average test temperature of each reference projection device based on the light source test temperatures of each light source other than the abnormal light source.
[0104] Abnormal light sources refer to light sources with abnormal temperature distribution during corresponding light source testing.
[0105] In some embodiments, abnormal distribution may include at least one of the following: the variation range of the light source test temperature exceeds a preset threshold, and the distribution of the light source test temperature is irregular.
[0106] In some embodiments, the computer device can determine the average test temperature corresponding to each reference projection device based on the test temperature of each light source other than the abnormal light source, and then determine the maximum average test temperature and the minimum average test temperature based on the average test temperature corresponding to each reference projection device, and determine the preset threshold corresponding to the average temperature based on the average of the maximum average test temperature and the minimum average test temperature.
[0107] In the above embodiments, if there is an abnormal light source corresponding to an abnormal light source with an abnormal light source temperature distribution, the light source temperature of the abnormal light source is not included in the calculation of the preset threshold corresponding to the average temperature, thereby improving the accuracy of the preset threshold corresponding to the average temperature.
[0108] In some embodiments, there are multiple preset ambient temperatures; each preset ambient temperature corresponds to a different fan speed setting; the preset threshold values corresponding to each light source and the preset threshold values corresponding to the average temperature obtained at the preset ambient temperature are preset threshold values at the fan speed settings corresponding to the preset ambient temperature.
[0109] In some embodiments, the light source temperature of each reference projection device can be tested in advance at various preset ambient temperatures to obtain the preset threshold and the preset threshold corresponding to the average temperature of each light source at each preset ambient temperature. That is, the preset threshold and the preset threshold corresponding to the average temperature of each light source at each preset ambient temperature and speed setting respectively. The preset threshold and the preset threshold corresponding to the average temperature of each light source at each speed setting are then written into the projection device.
[0110] In some embodiments, during the use of the projection device, the projection device can determine the current speed setting of the fan in the projection device, and based on the current speed setting, determine the preset thresholds corresponding to the light source temperature and average temperature of each light source at the current speed setting, and compare the light source temperature and average temperature of each light source with the corresponding preset thresholds at the current speed setting to determine whether the preset fan adjustment conditions are met.
[0111] In the above embodiments, the light source temperature of each reference projection device is tested at the preset ambient temperature corresponding to each speed setting, and the preset threshold and the preset threshold corresponding to the average temperature of each light source at each speed setting are obtained. In this way, it is possible to accurately determine whether the preset fan adjustment conditions are met for each speed setting based on the light source temperature, average temperature and preset threshold.
[0112] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.
[0113] Based on the same inventive concept, this application also provides a heat dissipation control device for implementing the aforementioned heat dissipation control method for projection devices. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the heat dissipation control device provided below can be found in the limitations of the heat dissipation control method for projection devices described above, and will not be repeated here.
[0114] In some embodiments, such as Figure 5As shown, a heat dissipation control device 500 for a projection device is provided, including: a temperature acquisition module 502, an average temperature determination module 504, a comparison module 506, and a fan adjustment module 508, wherein:
[0115] Temperature acquisition module 502 is used to acquire the light source temperature of each light source in the projection device.
[0116] The average temperature determination module 504 is used to determine the average temperature of each light source.
[0117] The comparison module 506 is used to compare the light source temperature and average temperature of each light source with the corresponding preset threshold to determine whether the preset fan adjustment conditions are met.
[0118] The fan adjustment module 508 is used to adjust the fan speed in the projection device to adjust the heat dissipation of the projection device when the preset fan adjustment conditions are met.
[0119] The preset thresholds for the light source temperatures of each light source are determined based on the light source test temperatures obtained by testing the light source temperatures of each reference projection device under a preset ambient temperature; the preset thresholds for the average temperature are determined based on the average of the test temperatures of each light source.
[0120] In some embodiments, the preset fan adjustment conditions include preset fan speed increase conditions; the comparison module 506 is further configured to determine that the preset fan speed increase conditions are met if at least one of the light source temperature and the average temperature of each light source is greater than or equal to the corresponding preset threshold. The fan adjustment module 508 is further configured to increase the speed of the fan in the projection device when the preset fan speed increase conditions are met, so as to adjust the heat dissipation of the projection device.
[0121] In some embodiments, the preset fan adjustment conditions include preset fan speed reduction conditions. The comparison module 506 is further configured to determine that the preset fan speed reduction conditions are met when the light source temperature and average temperature of each light source are both less than their respective preset thresholds. The fan adjustment module 508 is further configured to reduce the speed of the fan in the projection device when the preset fan speed reduction conditions are met, thereby adjusting the heat dissipation of the projection device.
[0122] In some embodiments, the comparison module 506 is further configured to determine the current speed setting of the fan in the projection device; determine the preset thresholds corresponding to the light source temperature and average temperature of each light source at the current speed setting; and compare the light source temperature and average temperature of each light source with the corresponding preset thresholds at the current speed setting to determine whether the preset fan adjustment conditions are met.
[0123] In some embodiments, such as Figure 6As shown, the heat dissipation control device 500 for projection equipment also includes:
[0124] The preset threshold determination module 510 is used to perform light source temperature tests on each reference projection device under a preset ambient temperature, obtain the light source test temperature of each light source in each reference projection device, and determine the average test temperature of each reference projection device based on the light source test temperature; determine the maximum and minimum temperature values of each light source based on the light source test temperature of the same light source in each reference projection device, and determine the maximum and minimum average test temperatures based on the average test temperatures of each reference projection device; determine the preset threshold corresponding to each light source based on the maximum temperature value of each light source, and determine the preset threshold corresponding to the average temperature based on the average of the maximum and minimum average test temperatures.
[0125] In some embodiments, the preset threshold determination module 510 is further configured to determine the correction value corresponding to each light source based on the distribution of the light source test temperature corresponding to each light source, and to determine the correction value corresponding to the average temperature based on the distribution of the average test temperature corresponding to each reference projection device; to determine the preset threshold corresponding to each light source based on the maximum temperature value and the corresponding correction value corresponding to each light source; and to determine the preset threshold corresponding to the average temperature based on the average of the maximum and minimum test temperature values and the correction value corresponding to the average temperature.
[0126] In some embodiments, the preset threshold determination module 510 is further configured to determine the average test temperature of each reference projection device based on the test temperature of each light source other than the abnormal light source if the test temperature distribution of the light source corresponding to the abnormal light source is abnormal.
[0127] In some embodiments, there are multiple preset ambient temperatures; each preset ambient temperature corresponds to a different fan speed setting; the preset threshold values corresponding to each light source and the preset threshold values corresponding to the average temperature obtained at the preset ambient temperature are preset threshold values at the fan speed settings corresponding to the preset ambient temperature.
[0128] The aforementioned heat dissipation control device for projection equipment pre-tests the light source temperature of each reference projection device under a preset ambient temperature to obtain preset thresholds for the light source temperature and the average temperature of each light source. By comparing the light source temperature and average temperature of each light source with their respective preset thresholds, it can determine whether the ambient temperature has reached the condition for adjusting the fan speed. Thus, by simply collecting the light source temperature of each light source in the projection equipment through a light source temperature sensor, it is possible to determine whether to adjust the fan speed, eliminating the need for an additional ambient temperature sensor. This reduces the size of the projection equipment and improves its integration.
[0129] Each module in the aforementioned heat dissipation control device for projection equipment can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the projection equipment in hardware form or independent of it, or stored in the memory of the projection equipment in software form, so that the processor can call and execute the corresponding operations of each module.
[0130] In one embodiment, a projection device is provided, the internal structure of which can be shown as follows: Figure 7 As shown, the projection device includes a processor, memory, and network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface is used to communicate with external terminals via a network connection. When the computer program is executed by the processor, it implements a heat dissipation control method for the projection device.
[0131] Those skilled in the art will understand that Figure 7 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the projection device to which the present application is applied. A specific projection device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.
[0132] In one embodiment, a projection device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.
[0133] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.
[0134] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.
[0135] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.
[0136] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0137] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A heat dissipation control method for a projection device, characterized in that, The method includes: The light source temperature of each reference projection device is tested in advance under a preset ambient temperature to obtain the light source test temperature of each light source in each reference projection device, and the average test temperature of each reference projection device is determined based on the light source test temperature. Based on the test temperature of the same light source in each of the reference projection devices, determine the maximum and minimum temperature values corresponding to each light source, and based on the average test temperature values corresponding to each of the reference projection devices, determine the average maximum and average minimum test temperature values. Based on the maximum temperature value corresponding to each of the light sources, a preset threshold corresponding to each of the light sources is determined, and based on the average of the maximum test temperature and the average of the minimum test temperature, a preset threshold corresponding to the average temperature is determined. Obtain the light source temperature of each light source in the projection device; Determine the average temperature of each of the aforementioned light sources; The light source temperature and the average temperature of each light source are compared with the corresponding preset thresholds to determine whether the preset fan adjustment conditions are met. Under the condition that the preset fan adjustment conditions are met, the speed of the fan in the projection device is adjusted to adjust the heat dissipation of the projection device.
2. The method according to claim 1, characterized in that, The preset fan adjustment conditions include preset fan speed adjustment conditions; The step of comparing the light source temperature and the average temperature of each light source with corresponding preset thresholds to determine whether the preset fan adjustment conditions are met includes: If at least one of the light source temperatures and the average temperature of each light source is greater than or equal to the corresponding preset threshold, it is determined that the preset fan speed increase condition is met. The step of adjusting the fan speed in the projection device to adjust the heat dissipation of the projection device, under the condition that the preset fan adjustment conditions are met, includes: Under the condition of meeting the preset fan speed increase conditions, the fan speed of the projection device is increased to adjust the heat dissipation of the projection device.
3. The method according to claim 1, characterized in that, The preset fan adjustment conditions include preset fan downshift conditions; The step of comparing the light source temperature and the average temperature of each light source with corresponding preset thresholds to determine whether the preset fan adjustment conditions are met includes: If the light source temperature and the average temperature of each light source are both less than the corresponding preset threshold, then the preset fan downshift condition is met. The step of adjusting the fan speed in the projection device to adjust the heat dissipation of the projection device, under the condition that the preset fan adjustment conditions are met, includes: Under the condition of meeting the preset fan speed reduction condition, the fan speed of the projection device is reduced to adjust the heat dissipation of the projection device.
4. The method according to claim 1, characterized in that, Before comparing the light source temperature and the average temperature of each light source with corresponding preset thresholds to determine whether preset fan adjustment conditions are met, the method further includes: Determine the current fan speed setting in the projection device; Determine the preset threshold values corresponding to the light source temperature and the average temperature of each light source at the current speed setting; The step of comparing the light source temperature and the average temperature of each light source with corresponding preset thresholds to determine whether the preset fan adjustment conditions are met includes: The light source temperature and the average temperature of each light source are compared with the corresponding preset threshold at the current speed setting to determine whether the preset fan adjustment conditions are met.
5. The method according to claim 1, characterized in that, The step of determining a preset threshold corresponding to each of the light sources based on the maximum temperature value corresponding to each of the light sources, and determining the preset threshold corresponding to the average temperature based on the average of the maximum and minimum test temperatures, includes: Based on the distribution of the test temperatures of each light source, a correction value is determined for each light source. Based on the distribution of the average test temperatures of each reference projection device, a correction value is determined for the average temperature. Based on the maximum temperature value and corresponding correction value of each light source, a preset threshold value is determined for each light source. Based on the average of the maximum and minimum test temperatures, and the correction value corresponding to the average temperature, a preset threshold corresponding to the average temperature is determined.
6. The method according to claim 1, characterized in that, The step of determining the average test temperature of each of the reference projection devices based on the test temperature of the light source includes: If there is an abnormal light source corresponding to an abnormal light source, the average test temperature of each of the reference projection devices is determined based on the light source test temperatures of each light source other than the abnormal light source.
7. The method according to claim 1, characterized in that, There are multiple preset ambient temperatures; each preset ambient temperature corresponds to a different fan speed setting; the preset threshold values corresponding to each light source and the preset threshold values corresponding to the average temperature obtained at the preset ambient temperature are preset threshold values at the fan speed settings corresponding to the preset ambient temperature.
8. A heat dissipation control device for a projection device, characterized in that, The device includes: The preset threshold determination module is used to perform light source temperature tests on each reference projection device under a preset ambient temperature, obtain the light source test temperature of each light source in each reference projection device, and determine the average test temperature of each reference projection device based on the light source test temperature. Based on the test temperature of the same light source in each of the reference projection devices, determine the maximum and minimum temperature values corresponding to each light source, and based on the average test temperature values corresponding to each of the reference projection devices, determine the average maximum and average minimum test temperature values. Based on the maximum temperature value corresponding to each of the light sources, a preset threshold corresponding to each of the light sources is determined, and based on the average of the maximum test temperature and the average of the minimum test temperature, a preset threshold corresponding to the average temperature is determined. Temperature acquisition module, used to acquire the light source temperature of each light source in the projection device; The average temperature determination module is used to determine the average temperature of each of the light sources. The comparison module is used to compare the light source temperature and the average temperature of each light source with the corresponding preset threshold to determine whether the preset fan adjustment conditions are met. The fan adjustment module is used to adjust the fan speed in the projection device under the condition that the preset fan adjustment conditions are met, so as to adjust the heat dissipation of the projection device.
9. A projection device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.
10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.