CN118170175A - Temperature control system and method suitable for backlight heat source of projector - Google Patents
Temperature control system and method suitable for backlight heat source of projector Download PDFInfo
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- CN118170175A CN118170175A CN202410287429.7A CN202410287429A CN118170175A CN 118170175 A CN118170175 A CN 118170175A CN 202410287429 A CN202410287429 A CN 202410287429A CN 118170175 A CN118170175 A CN 118170175A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 41
- 230000017525 heat dissipation Effects 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
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- 230000032683 aging Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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Abstract
The application discloses a temperature control system and a temperature control method suitable for a backlight heat source of a projector. The system comprises a power supply module, a projection SOC, a fan, an NTC detection circuit and a projection backlight heat source, wherein the power supply module is electrically connected with the projection SOC, the fan and the projection backlight heat source respectively for supplying power; the projection SOC acquires the electric signal sent by the NTC detection circuit, and controls the rotating speed of the fan according to the electric signal sent by the NTC detection circuit; the fan works for the projection backlight heat source, and the rotating speed is changed according to the electric signal sent by the projection SOC; the NTC detection circuit detects the temperature of a backlight heat source of the projector in real time after the projector is started, converts the temperature into an electric signal and feeds the electric signal back to the projection SOC. The application can solve the problems of loud noise and temperature control caused by the operation of the fan in the using process of the projector product.
Description
Technical Field
The invention relates to the technical field of integrated circuits, in particular to a temperature control system and a temperature control method suitable for a backlight heat source of a projector.
Background
The projector is a device capable of projecting images or videos onto a curtain, is widely applied to families, offices, schools and entertainment places, has the advantages of high definition, flexible picture size, exquisite and small size, convenience in carrying and the like, and is increasingly popular and touted by people.
Because of the large power and the exquisite and small size of the projector, heat dissipation is a big problem, and in order to solve the problem, it is common practice to use a built-in fan to dissipate heat and accelerate air convection, so that heat in the projector is rapidly taken away to maintain a relatively low temperature environment.
However, the heat dissipation of the built-in fan has a disadvantage that a larger noise problem is caused when the fan works, and the heat dissipation of the built-in fan is additionally outstanding in relatively quiet environments such as at night, so that the user experience is affected. The heat generated by the backlight heat source of the projector is very large, and if the fan is abnormal, a large amount of heat is accumulated in a short time, so that the temperature is abnormally increased to damage the projector.
Disclosure of Invention
Based on the above, the embodiment of the application provides a temperature control system and a temperature control method suitable for a backlight heat source of a projector, which can solve the problems of high noise and temperature control caused by the operation of a fan in the using process of a projector product.
In a first aspect, a temperature control system suitable for a projector backlight heat source is provided, the system comprising a power supply module, a projection SOC, a fan, an NTC detection circuit and a projection backlight heat source, in particular:
the power supply module is respectively and electrically connected with the projection SOC, the fan and the projection backlight heat source and is used for respectively supplying power to the projection SOC, the fan and the projection backlight heat source;
The projection SOC is used for acquiring the electric signal sent by the NTC detection circuit and controlling the rotating speed of the fan according to the electric signal sent by the NTC detection circuit;
the fan works for the projection backlight heat source and is used for changing the rotating speed according to the electric signal sent by the projection SOC;
And the NTC detection circuit is used for detecting the temperature of the backlight heat source of the projector in real time after the projector is started, converting the temperature into an electric signal and feeding the electric signal back to the projection SOC.
Optionally, the NTC detection circuit specifically includes:
when the NTC detection circuit detects that the temperature of a backlight heat source of the projector is increased, the voltage value on the NTC is reduced, and a voltage value reducing signal is sent to the projection SOC, and the projection SOC sends a rotating speed increasing signal to the fan according to the voltage value reducing signal.
Optionally, the NTC detection circuit specifically includes:
when the NTC detection circuit detects that the temperature of a backlight heat source of the projector is reduced, the voltage value on the NTC is increased, and a voltage value increasing signal is sent to the projection SOC, and the projection SOC sends a rotating speed reducing signal to the fan according to the voltage value increasing signal.
Optionally, the projection SOC is further configured to:
And when the NTC detection circuit detects that the temperature of the backlight heat source of the projector is higher than a first preset threshold value, reducing the power of the backlight heat source.
Optionally, the projection SOC is further configured to:
when the NTC detection circuit detects that the temperature of the backlight heat source of the projector is higher than a second preset threshold value, high-temperature reminding is carried out through an interface, and the projector is turned off within a set time.
In a second aspect, a temperature control method suitable for a backlight heat source of a projector is provided, where the method is implemented in the temperature control system of any one of the first aspects, and includes:
After the starting-up signal of the projector is obtained, the temperature of a backlight heat source of the projector is detected in real time through an NTC detection circuit, the temperature is converted into an electric signal and then fed back to a projection SOC, and the projection SOC controls the rotating speed of the fan according to the fed-back electric signal.
Optionally, converting the temperature into an electrical signal and feeding back to the projection SOC, where the projection SOC controls the fan rotation speed according to the fed-back electrical signal specifically includes:
When the temperature of the backlight heat source of the projector is detected to be increased, the voltage value on the NTC is reduced, and a voltage value reducing signal is sent to the projection SOC, and the projection SOC sends a rotating speed increasing signal to the fan according to the voltage value reducing signal.
Optionally, converting the temperature into an electrical signal and feeding back to the projection SOC, where the projection SOC controls the fan rotation speed according to the fed-back electrical signal specifically includes:
When the temperature of the backlight heat source of the projector is detected to be reduced, the voltage value on the NTC is increased, and a voltage value increasing signal is sent to the projection SOC, and the projection SOC sends a rotating speed reducing signal to the fan according to the voltage value increasing signal.
Optionally, the method further comprises:
And setting a first preset threshold, and reducing the power of the backlight heat source when the temperature of the backlight heat source of the projector is detected to be higher than the first preset threshold.
Optionally, the method further comprises:
Setting a second preset threshold, and when the temperature of the backlight heat source of the projector is detected to be higher than the second preset threshold, carrying out high-temperature reminding through an interface and turning off the projector within a set time.
The technical scheme provided by the embodiment of the application comprises a power supply module, a projection SOC, a fan, an NTC detection circuit and a projection backlight heat source, wherein the power supply module is respectively electrically connected with the projection SOC, the fan and the projection backlight heat source for supplying power; the projection SOC acquires the electric signal sent by the NTC detection circuit, and controls the rotating speed of the fan according to the electric signal sent by the NTC detection circuit; the fan works for the projection backlight heat source, and the rotating speed is changed according to the electric signal sent by the projection SOC; the NTC detection circuit detects the temperature of a backlight heat source of the projector in real time after the projector is started, converts the temperature into an electric signal and feeds the electric signal back to the projection SOC. It can be seen that the technical solution provided by the embodiment of the present application at least includes:
(1) By monitoring the temperature of the backlight heat source of the projector in real time and adjusting the rotating speed of the fan according to the temperature, the system can realize intelligent temperature control and ensure that the projector can keep proper temperature under various working conditions.
(2) By automatic calibration and temperature compensation, the system can provide more accurate temperature monitoring data, and accurate temperature control can reduce component aging or damage caused by overheating, thereby prolonging the service life of the projector.
(3) The power of the backlight heat source and the rotating speed of the fan are dynamically adjusted according to actual needs, so that unnecessary energy consumption can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
Fig. 1 is a logic diagram of temperature control for a backlight heat source of a projector according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In the description of the present invention, the terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed but inherent to such process, method, article, or apparatus or steps or elements added based on further optimization of the inventive concept.
The application is composed of a fan, an NTC (negative temperature coefficient resistor), a projection SOC, a power supply module and a projection backlight heat source. Specifically, please refer to fig. 1, which illustrates a temperature control logic diagram for controlling temperature of a backlight heat source of a projector according to an embodiment of the present application, a power supply module supplies power to a projection SOC, a fan, and a projection backlight. The projected SOC may directly control the fan speed while checking whether the fan is operating properly. The fan works for the projection backlight, and rapidly takes away the heat of the projection backlight heat source in an air convection mode. The projection backlight heat source converts the heat signal into an electric signal through the NTC detection circuit and feeds the electric signal back to the projection SOC, and the projection SOC can quickly make corresponding. The projection SOC can directly control the backlight heat source.
Specifically:
The power supply module is electrically connected with the projection SOC, the fan and the projection backlight heat source respectively and is used for supplying power to the projection SOC, the fan and the projection backlight heat source respectively.
The projection SOC is used for acquiring the electric signal sent by the NTC detection circuit and controlling the rotating speed of the fan according to the electric signal sent by the NTC detection circuit. And when the NTC detection circuit detects that the temperature of the backlight heat source of the projector is higher than a first preset threshold value, reducing the power of the backlight heat source. When the NTC detection circuit detects that the temperature of the backlight heat source of the projector is higher than a second preset threshold value, high-temperature reminding is carried out through an interface, and the projector is turned off within a set time. The first preset threshold may be a manually set threshold set in a safe environment, and the second preset threshold may be a factory set threshold of the device exceeding the safe environment.
The fan works for the projection backlight heat source and is used for changing the rotating speed according to the electric signal sent by the projection SOC.
And the NTC detection circuit is used for detecting the temperature of the backlight heat source of the projector in real time after the projector is started, converting the temperature into an electric signal and feeding the electric signal back to the projection SOC. When the NTC detection circuit detects that the temperature of a backlight heat source of the projector is increased, the voltage value on the NTC is reduced, a voltage value reducing signal is sent to the projection SOC, and the projection SOC sends a rotating speed increasing signal to the fan according to the voltage value reducing signal. When the NTC detection circuit detects that the temperature of a backlight heat source of the projector is reduced, the voltage value on the NTC is increased, and a voltage value increasing signal is sent to the projection SOC, and the projection SOC sends a rotating speed reducing signal to the fan according to the voltage value increasing signal.
One specific control implementation method is given below:
When the projector is started, the projector works normally, the fan works normally, the temperature of the backlight heat source of the projector rises and scalds, the NTC detection circuit starts to detect the temperature of the backlight heat source of the projector in real time, the NTC detection circuit converts the temperature into an electric signal and feeds the electric signal back to the projection SOC, and the projection SOC controls the rotating speed of the fan through the fed-back electric signal. The projected SOC may directly control the power of the backlight heat source.
When the temperature of the backlight heat source of the projector is lower, the fan works at a lower rotating speed, the rotating speed is low, and the noise is low.
When the projector works for a period of time, the temperature rises, and the fan properly increases the rotating speed to maintain a good temperature of the backlight heat source.
When the projector works for a long time, the temperature can rise to a higher temperature, and at the moment, the fan works at the highest rotating speed, so that the temperature of the backlight heat source is in a friendly controllable range.
When the temperature of the projector is continuously increased and the temperature of the backlight heat source cannot be maintained in a controllable range when the fan works at the highest rotating speed, the projection SOC properly reduces the power of the backlight heat source, the power of the backlight heat source is reduced, the heating value is reduced, and the temperature is reduced. So that the temperature can be maintained within an allowable range.
When the projector is abnormal, the temperature of the backlight heat source is very high and exceeds the allowable range, the projection SOC can be used for protecting the projector from being damaged by prompting that the temperature is too high at the interface and then shutting down after 10 seconds and shutting down the machine after 10 seconds. When the abnormality is relieved, the next normal use is not affected.
When the temperature of the backlight heat source of the projector is reduced, the rotating speed of the fan is properly reduced so as to reduce noise caused by the fan.
The embodiment of the application also provides a temperature control method suitable for the backlight heat source of the projector, which comprises the following steps:
After the starting-up signal of the projector is obtained, the temperature of a backlight heat source of the projector is detected in real time through an NTC detection circuit, the temperature is converted into an electric signal and then fed back to a projection SOC, and the projection SOC controls the rotating speed of the fan according to the fed-back electric signal.
In an alternative embodiment of the present application, converting the temperature into an electrical signal and feeding back the electrical signal to the projection SOC, where the projection SOC controls the fan speed according to the fed-back electrical signal specifically includes: when the temperature of the backlight heat source of the projector is detected to be increased, the voltage value on the NTC is reduced, and a voltage value reducing signal is sent to the projection SOC, and the projection SOC sends a rotating speed increasing signal to the fan according to the voltage value reducing signal. When the temperature of the backlight heat source of the projector is detected to be reduced, the voltage value on the NTC is increased, and a voltage value increasing signal is sent to the projection SOC, and the projection SOC sends a rotating speed reducing signal to the fan according to the voltage value increasing signal.
In an alternative embodiment of the application, the method further comprises: and setting a first preset threshold, and reducing the power of the backlight heat source when the temperature of the backlight heat source of the projector is detected to be higher than the first preset threshold. Setting a second preset threshold, and when the temperature of the backlight heat source of the projector is detected to be higher than the second preset threshold, carrying out high-temperature reminding through an interface and turning off the projector within a set time.
The temperature control method for a projector backlight heat source provided in the embodiment of the present application is implemented in the above temperature control system for a projector backlight heat source, and specific limitation regarding the temperature control method for a projector backlight heat source can be referred to above for limitation regarding the temperature control system for a projector backlight heat source, which is not described herein. The various parts of the above-described temperature control system suitable for use in a projector backlight heat source may be implemented in whole or in part in software, hardware, and combinations thereof. The above modules may be embedded in hardware or independent of a processor in the device, or may be stored in software in a memory in the device, so that the processor may call and execute operations corresponding to the above modules.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A temperature control system suitable for a projector backlight heat source, characterized in that the system comprises a power supply module, a projection SOC, a fan, an NTC detection circuit and a projection backlight heat source, in particular:
the power supply module is respectively and electrically connected with the projection SOC, the fan and the projection backlight heat source and is used for respectively supplying power to the projection SOC, the fan and the projection backlight heat source;
The projection SOC is used for acquiring the electric signal sent by the NTC detection circuit and controlling the rotating speed of the fan according to the electric signal sent by the NTC detection circuit;
the fan works for the projection backlight heat source and is used for changing the rotating speed according to the electric signal sent by the projection SOC;
And the NTC detection circuit is used for detecting the temperature of the backlight heat source of the projector in real time after the projector is started, converting the temperature into an electric signal and feeding the electric signal back to the projection SOC.
2. The system according to claim 1, wherein the NTC detection circuit specifically comprises:
when the NTC detection circuit detects that the temperature of a backlight heat source of the projector is increased, the voltage value on the NTC is reduced, and a voltage value reducing signal is sent to the projection SOC, and the projection SOC sends a rotating speed increasing signal to the fan according to the voltage value reducing signal.
3. The system according to claim 1, wherein the NTC detection circuit specifically comprises:
when the NTC detection circuit detects that the temperature of a backlight heat source of the projector is reduced, the voltage value on the NTC is increased, and a voltage value increasing signal is sent to the projection SOC, and the projection SOC sends a rotating speed reducing signal to the fan according to the voltage value increasing signal.
4. The system of claim 1, wherein the projected SOC is further to:
And when the NTC detection circuit detects that the temperature of the backlight heat source of the projector is higher than a first preset threshold value, reducing the power of the backlight heat source.
5. The system of claim 1, wherein the projected SOC is further to:
when the NTC detection circuit detects that the temperature of the backlight heat source of the projector is higher than a second preset threshold value, high-temperature reminding is carried out through an interface, and the projector is turned off within a set time.
6. A temperature control method suitable for a projector backlight heat source, implemented in the temperature control system of any one of claims 1 to 5, the method comprising:
After the starting-up signal of the projector is obtained, the temperature of a backlight heat source of the projector is detected in real time through an NTC detection circuit, the temperature is converted into an electric signal and then fed back to a projection SOC, and the projection SOC controls the rotating speed of the fan according to the fed-back electric signal.
7. The method of claim 6, wherein converting the temperature into an electrical signal and feeding the electrical signal back to the projected SOC, and wherein the projected SOC controls the fan speed based on the fed-back electrical signal comprises:
When the temperature of the backlight heat source of the projector is detected to be increased, the voltage value on the NTC is reduced, and a voltage value reducing signal is sent to the projection SOC, and the projection SOC sends a rotating speed increasing signal to the fan according to the voltage value reducing signal.
8. The method of claim 6, wherein converting the temperature into an electrical signal and feeding the electrical signal back to the projected SOC, and wherein the projected SOC controls the fan speed based on the fed-back electrical signal comprises:
When the temperature of the backlight heat source of the projector is detected to be reduced, the voltage value on the NTC is increased, and a voltage value increasing signal is sent to the projection SOC, and the projection SOC sends a rotating speed reducing signal to the fan according to the voltage value increasing signal.
9. The method of claim 6, wherein the method further comprises:
And setting a first preset threshold, and reducing the power of the backlight heat source when the temperature of the backlight heat source of the projector is detected to be higher than the first preset threshold.
10. The method of claim 6, wherein the method further comprises:
Setting a second preset threshold, and when the temperature of the backlight heat source of the projector is detected to be higher than the second preset threshold, carrying out high-temperature reminding through an interface and turning off the projector within a set time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410287429.7A CN118170175A (en) | 2024-03-13 | 2024-03-13 | Temperature control system and method suitable for backlight heat source of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410287429.7A CN118170175A (en) | 2024-03-13 | 2024-03-13 | Temperature control system and method suitable for backlight heat source of projector |
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| Publication Number | Publication Date |
|---|---|
| CN118170175A true CN118170175A (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410287429.7A Pending CN118170175A (en) | 2024-03-13 | 2024-03-13 | Temperature control system and method suitable for backlight heat source of projector |
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| Country | Link |
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| CN (1) | CN118170175A (en) |
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- 2024-03-13 CN CN202410287429.7A patent/CN118170175A/en active Pending
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