Power adaptive control method and projection device

Abstract

The application relates to a power self-adaptive control method and a projection device, the method is applied to a projector, when a power supply is a PD power supply and it is inquired that the power supply voltage of the power supply meets a target voltage and the power supply power of the power supply meets a target minimum power, the target voltage is confirmed as a working voltage; target current information and power supply current information of the power supply are acquired, the target current information and the power supply current information are compared and processed, and working current is obtained according to the processing result; the working voltage and the working current are used to adjust a projection working mode, so that adaptive power adaptation is realized, the projection working mode is automatically adjusted according to the adapted power, the intelligent degree of the projector is improved, in addition, the projection working mode can be automatically adjusted according to the adapted power, the use effect and the use length of the projector can be balanced, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of projection processing technology, and in particular to a power adaptive control method and projection device. Background Technology

[0002] A projector, also known as a projector, is a device that projects images or videos onto a screen or wall. With the increasing popularity of outdoor activities such as camping, more and more users are choosing to carry compact projectors to enjoy a large-screen viewing experience outdoors. However, current home projectors generally have relatively high power consumption, typically between 65W and 200W, which significantly limits their outdoor use. The ideal solution is to carry a portable power bank to power the projector outdoors.

[0003] Common portable power supplies, such as power banks, generally cannot support such high power output. Therefore, the power supply output of the projector needs to be adapted to ensure that the projector can work normally and stably.

[0004] In the process of implementation, the inventors discovered that traditional technologies have at least the following problems: current projector power supply methods have low power adaptation reliability, high power consumption, and low level of intelligence. Summary of the Invention

[0005] Therefore, it is necessary to address the problems existing in the current power supply methods for projectors by providing a power adaptive control method and projection device that can adaptively adapt to power, has high power adaptation reliability, low power consumption, and a high degree of intelligence.

[0006] In a first aspect, this application provides a power adaptive control method applied to a projector, the method comprising the following steps:

[0007] If the power supply is a PD power supply, and the power supply voltage meets the target voltage and the power supply power meets the target minimum power, then the target voltage is confirmed as the working voltage.

[0008] The target current information and the power supply current information are obtained, the target current information and the power supply current information are compared and processed, and the operating current is obtained based on the processing result.

[0009] Adjust the projection mode according to the operating voltage and current.

[0010] Optionally, the target current information includes the target minimum current and the target maximum current; the supply current information includes the supply maximum current.

[0011] The steps for comparing and processing the target current information and the supply current information, and obtaining the operating current based on the processing results, include:

[0012] When the maximum supply current is greater than or equal to the target minimum current and less than or equal to the target maximum current, the maximum supply current is determined as the operating current.

[0013] When the maximum power supply current is greater than the target maximum current, the target maximum current is determined as the operating current.

[0014] Optionally, the steps for adjusting the projection working mode according to the operating voltage and operating current include:

[0015] The input power is obtained based on the operating voltage and operating current;

[0016] When the input power is less than the first preset value and the projector is powered on, adjust the projection working mode to power saving mode.

[0017] When the input power is greater than or equal to the first preset value and the projector is powered on, adjust the projection working mode to normal mode.

[0018] Optionally, before the steps of acquiring target current information and power supply current information, comparing and processing the target current information and power supply current information, and obtaining the operating current based on the processing result, the following steps are included:

[0019] If the power supply voltage does not meet the target voltage or the power supply power does not meet the target minimum power, the projector should be disabled from powering on; or,

[0020] The projector must not be turned on if the power supply voltage or current cannot be found.

[0021] Optionally, after adjusting the projection working mode according to the operating voltage and operating current, the following steps may be included:

[0022] Obtain the remaining power of the power supply;

[0023] When the remaining battery power is less than the second preset value, adjust the projection working mode to power saving mode;

[0024] When the remaining battery power is greater than or equal to the second preset value, adjust the projection working mode to normal mode.

[0025] Optionally, the projector includes a speaker, a communication module, and a processor; the processor is connected to both the speaker and the communication module; the power-saving mode includes at least one of the following:

[0026] Reduce the brightness of the projector's light source;

[0027] Reduce the speaker's output power;

[0028] Reduce or turn off the output power of the communication module;

[0029] Reduce the processor's operating frequency.

[0030] Optionally, the steps of acquiring target current information and power supply current information, comparing and processing the target current information and power supply current information, and obtaining the operating current based on the processing result include:

[0031] After the projector is powered on, obtain the power supply current information of the pre-stored power supply.

[0032] Obtain the preset target current information and compare and process the target current information and the supply current information;

[0033] Based on the comparison and processing results, the operating current information is obtained;

[0034] Based on the operating current information, the power supply is instructed to provide the corresponding operating current.

[0035] Optionally, before the steps of acquiring target current information and power supply current information, comparing and processing the target current information and power supply current information, and obtaining the operating current based on the processing result, the following steps are included:

[0036] Obtain the wake-up voltage from the power supply;

[0037] Adjust the projector to wake-up state based on the wake-up voltage;

[0038] The steps of acquiring target current information and power supply current information, comparing and processing the target current information and power supply current information, and obtaining the operating current based on the processing result include:

[0039] When the projector is in a wake-up state, obtain the pre-stored power supply current information;

[0040] Obtain the preset target current information and compare and process the target current information and the supply current information;

[0041] Based on the comparison and processing results, the operating current information is obtained;

[0042] After the projector is powered on, the power supply is instructed to provide the corresponding operating current based on the operating current information.

[0043] Optionally, when the power supply is a PD power supply, and the power supply voltage meets the target voltage and the power supply power meets the target minimum power, the step of confirming the target voltage as the operating voltage includes:

[0044] Obtain the startup voltage of the power supply and establish a PD protocol handshake based on the startup voltage;

[0045] According to the PD protocol, obtain the protocol voltage of the power supply; the protocol voltage is used to indicate that the projector is in the initial working state.

[0046] Secondly, this application provides a projection device, including a processor for connecting to a power supply;

[0047] The processor is used to execute the steps of any of the power adaptive control methods described above.

[0048] One of the above technical solutions has the following advantages and beneficial effects:

[0049] In the aforementioned power adaptive control method, applied to a projector, the target voltage is confirmed as the operating voltage when the power supply is a PD power supply and the supply voltage and power supply meet the target minimum power. Target current information and power supply current information are acquired, compared, and the operating current is obtained based on the processing result. The projection mode is adjusted according to the operating voltage and current, thereby achieving adaptive power matching. Based on the matched power, the projection mode is automatically adjusted, improving the projector's intelligence. This application, by querying whether the power supply is a PD power supply and finding that the supply voltage and power supply meet preset requirements, allows the projector to adaptively adjust its operating power according to the output power supported by the power supply, achieving automatic adaptation to power supplies with different output power. This results in high power matching reliability, low power consumption, and automatic adjustment of the projection mode based on the matched power, thus balancing the projector's performance and usage time, and improving the user experience. Attached Figure Description

[0050] Figure 1 This is a schematic diagram illustrating the application scenario of the power adaptive control method in the embodiments of this application;

[0051] Figure 2 This is a first flowchart illustrating the power adaptive control method in the embodiments of this application;

[0052] Figure 3 This is a flowchart illustrating the working current acquisition step in an embodiment of this application.

[0053] Figure 4 This is a schematic diagram of the first process of adjusting the projection working mode in the embodiments of this application;

[0054] Figure 5 This is a schematic diagram of the second process of adjusting the projection working mode in the embodiments of this application;

[0055] Figure 6This is a schematic diagram of the second process of the power adaptive control method in the embodiments of this application;

[0056] Figure 7 This is a schematic diagram of the third process of the power adaptive control method in the embodiments of this application;

[0057] Figure 8 This is a schematic diagram of the projection device in the embodiments of this application. Detailed Implementation

[0058] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0059] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0061] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0062] In addition, the term "multiple" should mean two or more.

[0063] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] The power adaptive control method provided in this application can adaptively adjust the operating mode of electrical equipment in scenarios where the power supply is not mains power. (Reference) Figure 1 As shown, the power supply device can be a projector 102, and the power supply 104 can be a portable power bank, providing real-time power to the projector 102. The projector 102 may include a processor 106, which is connected to the power supply 104. The processor 106 can be used to: confirm the target voltage as the operating voltage when the power supply is a PD power supply and the power supply voltage meets the target voltage and the power supply power meets the target minimum power; acquire target current information and power supply current information, compare and process the target current information and power supply current information, and obtain the operating current based on the processing result; and adjust the projection working mode according to the operating voltage and operating current. The processor 106 can be the host processor of the projector, and the power supply can be a PD (Power Delivery) power supply, for example, a power bank or mobile power bank with a PD protocol.

[0065] In one embodiment, such as Figure 2 As shown, a power adaptive control method is provided, which is applied to... Figure 1 Taking the processor of a projector as an example, the explanation includes the following steps:

[0066] Step S210: When the power supply is a PD power supply, and the power supply voltage meets the target voltage and the power supply power meets the target minimum power, the target voltage is confirmed as the working voltage.

[0067] The PD power supply is a power source with a built-in PD chip that can communicate with the device via the PD protocol. The PD power supply can be a power bank (or portable power bank) with PD protocol functionality. The projector can be powered via a Type-C interface, and the projector's power interface supports the PD protocol. The projector's power interface can connect to a power bank (or portable power bank) and an adapter interface.

[0068] When the power supply is a PD power supply, the supply voltage refers to the output voltage supported by the PD power supply, and the supply power refers to the output power supported by the PD power supply. The target voltage refers to the input voltage supported by the projector, and the target minimum power refers to the minimum input power supported by the projector. The operating voltage refers to the actual operating voltage of the projector.

[0069] The processor can query the connected power supply. If the connected power supply is a PD power supply, it further queries the power supply voltage and power supply, compares the queried power supply voltage with the target voltage, and compares the power supply power with the target minimum power. If the power supply voltage meets the target voltage and the power supply power meets the target minimum power, the target voltage is confirmed as the working voltage.

[0070] For example, the power supply can be obtained by processing the power supply current and voltage. For instance, the processor can query the power supply voltage and current, and then obtain the power supply power of the corresponding power supply based on the power supply voltage and current.

[0071] In one example, assuming the target voltage of the projector is 20V, if the PD power supply's supply voltage meets the target voltage and the PD power supply's power supply meets the target minimum power, then it is determined that the PD power supply can support 20V voltage output, and the operating voltage is confirmed to be 20V.

[0072] Step S220: Obtain target current information and power supply current information, compare and process the target current information and power supply current information, and obtain the operating current based on the processing result.

[0073] When the power supply is a PD power supply, the power supply current information refers to the output current information supported by the PD power supply, and the target current information refers to the input current supported by the projector. The operating current refers to the actual operating current of the projector.

[0074] In some embodiments, the electrical device is equipped with a power supply interface, a PD chip, and a main control chip. The power supply interface is electrically connected to the PD chip, and the PD chip is electrically connected to the main control chip. When the power supply and the power supply interface of the electrical device are connected through a power line, the PD chip of the electrical device and the PD chip of the power supply establish a PD protocol handshake and provide the required voltage to the PD chip of the electrical device to enable the PD chip of the electrical device to work normally. Subsequently, the PD chip of the electrical device can obtain the power supply voltage information and power supply current information of each level supported by the power supply. This information can be stored in the PD chip of the electrical device for subsequent retrieval by the main control chip.

[0075] The processor of the electrical device acquires the target current information and the power supply current information, compares and processes the target current information and the power supply current information to determine the battery output level that the power supply can support. Then, based on the current levels supported by the power supply, it selects a suitable current within the input power range required by the projector, enabling the power supply to provide the corresponding current. The processor then obtains the operating current based on the processing result. In this example, the processor of the electrical device includes a PD chip and a main control chip. This step S220 can be achieved by the main control chip acquiring the power supply current information stored in the PD chip and comparing the acquired power supply current information with the input current it supports.

[0076] Step S230: Adjust the projection working mode according to the working voltage and working current.

[0077] The projection operating mode can include at least two modes: a normal operating mode and a power-saving mode. The normal operating mode ensures that all functional modules of the projector operate normally; the power-saving mode can be achieved by reducing projection brightness, lowering volume, and turning off the wireless communication module. The processor of the power device can obtain the input power of the projector based on the operating voltage and current, and adjust the projector's operating mode accordingly.

[0078] In the above embodiments, when the power supply is a PD power supply and the power supply voltage meets the target voltage and the power supply power meets the target minimum power, the target voltage is confirmed as the working voltage. Target current information and power supply current information are obtained, compared and processed, and the working current is obtained based on the processing result. The projection working mode is adjusted according to the working voltage and working current, thereby achieving adaptive power adaptation. Based on the adapted power, the projection working mode is automatically adjusted, improving the intelligence of the projector. This application, by querying whether the power supply is a PD power supply and finding that the power supply voltage and power meet preset requirements, allows the projector to adaptively adapt its working power according to the output power supported by the power supply, achieving automatic adaptation to power supplies with different output power. This results in high power adaptation reliability and low power consumption. Furthermore, it can automatically adjust the projection working mode based on the adapted power, thereby balancing the projector's performance and usage time, and improving the user experience.

[0079] In one example, such as Figure 3 As shown, the target current information includes the target minimum current and the target maximum current; the supply current information includes the supply maximum current. The steps for comparing and processing the target current information and the supply current information, and obtaining the operating current based on the processing result, include:

[0080] Step S310: When the maximum supply current is greater than or equal to the target minimum current and less than or equal to the target maximum current, confirm the maximum supply current as the working current.

[0081] Among them, the target minimum current refers to the minimum input current that the projector can support; the target maximum current refers to the maximum input current that the projector can support; the maximum supply current refers to the maximum output current that the power supply can support.

[0082] The processor obtains the target minimum current, the target maximum current, and the maximum supply current, and compares the maximum supply current with the target minimum current and the target maximum current respectively. When the maximum supply current is greater than or equal to the target minimum current and the maximum supply current is less than or equal to the target maximum current, confirm the maximum supply current as the working current.

[0083] Step S320: When the maximum supply current is greater than the target maximum current, confirm the target maximum current as the working current.

[0084] The processor compares the maximum supply current with the target minimum current and the target maximum current respectively. When the maximum supply current is greater than the target maximum current, confirm the target maximum current as the working current, and then the power supply provides the corresponding working current.

[0085] Exemplarily, assume that the target voltage supported by the projector is 20V; the maximum supply current supported by the power supply is A; the target minimum current supported by the projector is B - MIN; the target maximum current supported by the projector is B - MAX; the actual working current of the projector is C.

[0086] If the supply voltage of the power supply can support a 20V voltage output, then confirm the working voltage as 20V. If B - MIN ≤ A ≤ B - MAX, the projector adaptively adjusts the working current to A, that is, the actual working current C of the projector = A; in addition, the actual working current of the projector needs to satisfy B - MIN ≤ C ≤ A. If B - MAX < A, the projector adaptively adjusts the working current to B - MAX, that is, the actual working current C of the projector = B - MAX.

[0087] In the above embodiments, by querying whether the supply voltage and supply power of the power supply meet the preset requirements, when the preset requirements are met, the projector determines the supply voltage and supply current output gear of the power supply, and then based on each supply current gear that the power supply can provide, selects the appropriate current corresponding to the input power range required by the projector itself, so that the power supply supplies the working voltage and working current, realizing the self - adaptation of the working power according to the output power supported by the power supply, automatically adapting to power supplies with different output powers, with high power adaptation reliability and low power consumption.

[0088] In one example, such as Figure 4 As shown, the steps for adjusting the projection working mode according to the working voltage and working current include:

[0089] Step S410: Obtain the input power based on the operating voltage and operating current.

[0090] Input power refers to the projector's operating power. The processor can multiply the operating voltage and operating current values ​​to obtain the input power.

[0091] Step S420: When the input power is less than the first preset value and the projector is powered on, adjust the projection working mode to power saving mode.

[0092] The processor compares the input power with a first preset value. If the input power is less than the first preset value, it further checks the projector status. If the projector is powered on, it adjusts the projector's projection mode to power-saving mode. That is, when low input power is detected, the projector operates in power-saving mode, with some functions not running or power consumption reduced, balancing the projector's performance and usage time to improve the user experience. When the projector is triggered to power on, it enters the power-on state, which can be achieved by pressing the power button on the projector or the power button on the remote control.

[0093] Step S430: When the input power is greater than or equal to the first preset value and the projector is powered on, adjust the projection working mode to normal mode.

[0094] When the processor detects that the input power is greater than or equal to the first preset value, it further detects the projector status. If the projector is powered on, it adjusts the projector's projection mode to normal mode. That is, when the input power is detected to be high, the projector is controlled to work in normal mode, and all functional modules of the projector operate normally, thereby balancing the projector's performance and usage time and improving the user experience.

[0095] For example, if the processor determines that the output power of the power supply reaches the first preset value based on the requested operating voltage and operating current, the projector will enter normal mode after powering on, and all functional modules will operate normally without needing to enter power saving mode; if the output power of the power supply does not meet the first preset value, the projector will enter power saving mode after powering on, and some functions will not run or will reduce operating power consumption.

[0096] In one example, before the steps of obtaining target current information and power supply current information, comparing and processing the target current information and power supply current information, and obtaining the operating current based on the processing result, the following steps are included: if it is found that the power supply voltage does not meet the target voltage or the power supply power does not meet the target minimum power, the projector is prohibited from being turned on.

[0097] The processor can query the connected power supply. If the connected power supply is a PD power supply, it will further query the power supply voltage and power supply, and compare the queried power supply voltage with the target voltage and the power supply power with the target minimum power. If the power supply voltage does not meet the target voltage or the power supply power does not meet the target minimum power, the projector will be prevented from turning on.

[0098] In one example, assuming the target voltage of the projector is 20V, if the PD power supply voltage does not meet 20V and the PD power supply power does not meet the target minimum power, then the projector will be disabled from powering on.

[0099] In one example, before the steps of obtaining target current information and power supply current information, comparing and processing the target current information and power supply current information, and obtaining the operating current based on the processing result, the following is included: if the power supply voltage or power supply current is not found, the projector is prohibited from being turned on.

[0100] If the processor cannot find the power supply voltage or current supported by the power supply, it will prevent the projector from turning on. This will prevent the projector from being affected by abnormal power supply and extend the projector's lifespan.

[0101] In one example, the processor can query the connected power supply. If the connected power supply is found to be a DC power supply, the projector will directly enter the normal mode after powering on, and all functional modules will operate normally without needing to enter the power saving mode.

[0102] DC (Direct Current) power supply can be a DC power supply consisting of an adapter and a socket. The energy of the DC power supply can come from the alternating current (AC) power grid, and its function is to convert AC voltage into stable DC voltage. For example, electrical equipment is powered by plugging an adapter into a socket. The adapter is used to convert the AC power in the socket into DC power, and then transmit the DC power to the projector to power the projector.

[0103] In one example, such as Figure 5 As shown, the steps for adjusting the projection working mode according to the working voltage and current include:

[0104] Step S510: Obtain the remaining power of the power supply.

[0105] The processor can detect slight changes in the operating voltage; the lower the power supply, the slightly lower its output voltage, and consequently, the slightly lower the operating voltage. For example, a correlation between operating voltage and remaining power can be established in advance. The processor can then collect the operating voltage at a preset cycle and, using a lookup table, obtain the remaining power corresponding to that operating voltage.

[0106] For example, the processor can directly read the real-time power data from the power supply's data storage module to obtain the remaining power of the power supply.

[0107] Step S520: When the remaining battery power is less than the second preset value, adjust the projection working mode to power saving mode.

[0108] The processor can compare the obtained remaining power with a second preset value. Based on the comparison result, if the remaining power is less than the second preset value, it determines that the remaining power of the power supply is insufficient. Then, it adjusts the projection working mode to power saving mode, controls the projector to work in power saving mode, and some functions of the projector are not running or the power consumption is reduced, so as to balance the use effect and usage time of the projector and improve the user experience.

[0109] Step S530: When the remaining battery power is greater than or equal to the second preset value, adjust the projection working mode to normal mode.

[0110] When the processor detects that the remaining battery power is greater than or equal to a second preset value, it adjusts the projector's projection mode to normal mode, allowing all functional modules to operate normally without needing to enter power-saving mode. In other words, when sufficient battery power is detected, the projector operates in normal mode, ensuring all functional modules function correctly, thus balancing the projector's performance and usage time and improving the user experience.

[0111] For example, if the remaining battery power is in the high battery range, the projector will maintain normal projection mode, with all functional modules operating at full power or high levels. If the remaining battery power is in the middle or low battery range, the projector will enter power-saving mode, turning off some unnecessary functions (such as turning off network communication functions, turning off the TOF (Time Of Flight) module and / or turning off the camera module) or reducing the power consumption of some modules (such as reducing the brightness of the light source module, reducing the volume and / or reducing the fan speed) to balance the projector's performance and usage time, thereby improving the user experience.

[0112] In one example, the projector includes a speaker, a communication module, and a processor; the processor is connected to the speaker and the communication module respectively; the power-saving mode includes at least one of the following: reducing the brightness of the projector's light source; reducing the output power of the speaker; reducing or turning off the output power of the communication module; reducing the operating frequency of the processor, thereby reducing the power consumption of the projector and enabling the projector to operate in power-saving mode.

[0113] In one embodiment, such as Figure 6 As shown, a power adaptive control method is provided, which is applied to... Figure 1 Taking the processor of a projector as an example, the explanation includes the following steps:

[0114] Step S610: When the power supply is a PD power supply, and the power supply voltage meets the target voltage and the power supply power meets the target minimum power, the target voltage is confirmed as the working voltage.

[0115] For a detailed explanation of step S610, please refer to the description of the above embodiments, which will not be repeated here.

[0116] Step S620: After the projector is powered on, obtain the pre-stored power supply current information.

[0117] The projector's processor may include a PD chip at the projection end and a main control chip at the projection end. The PD chip is electrically connected to the main control chip and to the power supply. The power supply current information can be pre-stored in the PD chip at the projection end; for example, the PD chip at the projection end can obtain the power supply current information supported by the power supply and cache this power supply current information. Then, after the projector is powered on, the main control chip can read the power supply current information pre-stored on the PD chip to obtain the power supply current information.

[0118] Step S630: Obtain the preset target current information and compare and process the target current information and the power supply current information.

[0119] The preset target current information refers to the input current information supported by the projector that has been pre-configured. The processor can obtain the preset target current information and compare it with the power supply current information to determine the battery output level that the power supply can support.

[0120] Step S640: Based on the comparison processing results, obtain the operating current information.

[0121] The processor can determine the battery output level that the power supply can support based on the comparison results of the target current information and the power supply current information. Based on the current levels that the power supply can support, it selects the appropriate current within the input power range required by the projector itself, so that the power supply can supply the corresponding current, thereby obtaining the working current information.

[0122] Step S650: Based on the operating current information, instruct the power supply to provide the corresponding operating current.

[0123] Based on the operating current information, the processor instructs the power supply to provide the corresponding operating current, thereby enabling the power supply to transmit the corresponding operating current to the projector, achieving adaptive adaptation of operating current and operating voltage.

[0124] Step S660: Adjust the projection working mode according to the working voltage and working current.

[0125] For a detailed explanation of step S660, please refer to the description of the above embodiments, which will not be repeated here.

[0126] By checking whether the power supply is a PD power supply and finding that the power supply voltage and power supply meet the preset requirements, the projector can adapt its own working power according to the output power supported by the power supply, achieving automatic adaptation to power supplies with different output power. This results in high reliability and low power consumption. By adapting the working current information after the projector is turned on, the processor can maintain a low power consumption state before the projector is turned on and is less likely to be burned out by the power supply, thus extending the projector's lifespan. In addition, it can automatically adjust the projection working mode according to the adapted power, thereby balancing the projector's performance and usage time, and improving the user experience.

[0127] In one embodiment, such as Figure 7 As shown, a power adaptive control method is provided, which is applied to... Figure 1 Taking the processor of a projector as an example, the explanation includes the following steps:

[0128] Step S710: When the power supply is a PD power supply, and the power supply voltage meets the target voltage and the power supply power meets the target minimum power, the target voltage is confirmed as the working voltage.

[0129] For a detailed explanation of step S710, please refer to the description of the above embodiments, which will not be repeated here.

[0130] Step S720: Obtain the wake-up voltage of the power supply.

[0131] The projector's processor may include a PD chip and a main control chip at the projection end. The PD chip is electrically connected to the main control chip and also electrically connected to the power supply. A wake-up voltage can be used to wake up the main control chip. It should be noted that the wake-up voltage only needs to be sufficient to wake up the main control chip to at least enable the subsequent functional steps.

[0132] Step S730: Adjust the projector status to wake-up state according to the wake-up voltage.

[0133] When the projector is in wake-up mode, the projector's main control chip can work, but the projector's light source module, wireless communication module, camera, TOF module and speaker modules do not work.

[0134] Step S740: When the projector is in the wake-up state, obtain the pre-stored power supply current information.

[0135] The power supply current information can be pre-stored in the PD chip at the projection end; for example, the PD chip at the projection end can obtain the power supply current information supported by the power supply and cache the power supply current information. Then, when the projector is in a wake-up state, the main control chip can read the power supply current information pre-stored on the PD chip to obtain the power supply current information.

[0136] Step S750: Obtain the preset target current information and compare and process the target current information and the power supply current information.

[0137] The preset target current information refers to the input current information supported by the projector that has been pre-configured. The processor can obtain the preset target current information and compare it with the power supply current information to determine the battery output level that the power supply can support.

[0138] Step S760: Based on the comparison processing results, obtain the operating current information.

[0139] The processor can determine the battery output level that the power supply can support based on the comparison results between the target current information and the power supply current information. Based on the current levels that the power supply can support, it can select the appropriate current within the input power range required by the projector itself, and thus obtain the operating current information.

[0140] Step S770: After the projector is powered on, based on the operating current information, instruct the power supply to provide the corresponding operating current.

[0141] After the projector is powered on, the processor instructs the power supply to provide the corresponding operating current based on the operating current information, thereby enabling the power supply to transmit the corresponding operating current and voltage to the projector, achieving adaptive adaptation of operating current and voltage.

[0142] Step S780: Adjust the projection working mode according to the working voltage and working current.

[0143] For a detailed explanation of step S780, please refer to the description of the above embodiments, which will not be repeated here.

[0144] By checking whether the power supply is a PD power supply and finding that the power supply voltage and power supply meet the preset requirements, the projector can adapt its own working power according to the output power supported by the power supply, achieving automatic adaptation to power supplies with different output power. This results in high reliability and low power consumption. By adapting the working current information before the projector is turned on, the processor can ensure that the power supply can directly provide the working current required by the projector after the projector is turned on, achieving one-step operation and thus speeding up the boot-up process. In addition, it can automatically adjust the projection working mode according to the adapted power, thereby balancing the projector's performance and usage time and improving the user experience.

[0145] In one embodiment, when the power supply is a PD power supply, and it is found that the power supply voltage meets the target voltage and the power supply power meets the target minimum power, the step of confirming the target voltage as the operating voltage includes:

[0146] Obtain the startup voltage of the power supply and establish a PD protocol handshake based on the startup voltage. Obtain the protocol voltage of the power supply according to the PD protocol; the protocol voltage is used to indicate that the projector is in the initial working state.

[0147] Once the power supply is connected to the projector and powers it on, it transmits a startup voltage to the processor, which then obtains this startup voltage. Based on this startup voltage, the processor establishes a PD protocol handshake with the power supply, switching the startup voltage to the protocol voltage. The processor then obtains the protocol voltage and can determine the supported supply voltage and current from the power supply.

[0148] For example, the processor of the projector may include a PD chip at the projection end and a main control chip at the projection end. The PD chip is electrically connected to the main control chip and to the power supply. After the projector is powered on, the projector attempts to establish a PD protocol handshake with the PD chip of the power supply through the PD chip at the projection end, and determines the supported supply voltage and supply current of the power supply through the PD protocol.

[0149] In one example, the power supply is a PD power supply. The projector's processor may include a PD chip at the projection end and a main control chip at the projection end. The PD chip is electrically connected to the main control chip and to the PD power supply. After the power supply is connected to the projector and the PD power supply powers the projector (i.e., the power cord is connected), and before the projector is turned on, the PD power supply outputs a startup voltage to the PD chip at the projection end. The PD chip then establishes a PD protocol handshake with the power supply based on the startup voltage, determining the PD protocol. Subsequently, the PD power supply outputs a protocol voltage to the PD chip at the projection end based on the PD protocol, enabling the PD chip at the projection end to function normally. Under normal operating conditions, the PD chip can query the PD power supply for its supported supply voltage and current output levels and determine whether it meets the projector's minimum power requirements (e.g., whether the power supply has suitable supply voltage and current). If so, the power supply provides the operating voltage to the projector's main control chip, putting the main control chip in a standby state. Subsequently, when the user presses the projector's power button, the projector is powered on. During the power-on process, the projector uses the main control chip to determine the supported power supply voltage and current output levels from the PD chip. Then, based on the various current levels provided by the power supply, it selects a suitable current within the projector's required operating power range, and instructs the PD power supply to provide the corresponding operating voltage and current. Further, the main control chip calculates the input power based on the operating voltage and current, and adjusts the projector's operating mode after power-on accordingly. In this embodiment, the main control chip maintains a low-power consumption state before the projector is powered on and is less susceptible to damage from power supply issues.

[0150] In one example, the power supply is a PD power supply. The projector's processor may include a PD chip at the projection end and a main control chip at the projection end. The PD chip is electrically connected to the main control chip and to the PD power supply. After the power supply is connected to the projector and the PD power supply powers the projector (i.e., the power cord is connected), and before the projector is turned on, the PD power supply outputs a startup voltage to the PD chip at the projection end. The PD chip then establishes a PD protocol handshake with the power supply based on the startup voltage, determining the PD protocol. Subsequently, the PD power supply outputs a protocol voltage to the PD chip at the projection end based on the PD protocol, enabling the PD chip at the projection end to function normally. Under normal operating conditions, the PD chip can query the PD power supply for its supported supply voltage and current output levels and determine whether it has a wake-up voltage to wake up the main control chip. After the main control chip is woken up, it can determine the power supply voltage and current output level of the power supply via the PD chip. Based on the operating voltage required for the projector to work, the main control chip requests the required operating voltage and corresponding operating current information within the power range needed by the projector from the PD power supply. Subsequently, the projector requests this operating voltage and current information from the PD power supply, and the PD power supply outputs the operating voltage to the main control chip (wherein, the operating current request operation is equivalent to giving the PD power supply a current threshold range, so that its current value parameter in the subsequent power supply process is within the threshold range). After the user presses the power button on the projector, the PD power supply directly supplies the operating current required by the projector. Furthermore, the main control chip obtains the input power based on the operating voltage and current, and adjusts the working mode entered by the projector after power-on based on the input power. In this embodiment, the power supply can directly provide the operating current required by the projector after power-on, achieving one-step operation and thus speeding up the power-on process.

[0151] It should be understood that, although Figures 2 to 7 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figures 2 to 7 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but may be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0152] In one embodiment, such as Figure 8 As shown, this application provides a projection device, including a processor 820 for connecting to a power supply 810; the processor 820 is used to execute the steps of any of the power adaptive control methods described above.

[0153] The projection device can be a projector, and the power supply 810 can include a PD chip at the power supply end. The power supply 810 can be a PD power supply or a DC power supply. The processor 820 can include a PD chip at the projection end and a main control chip at the projection end. The PD chip at the projection end is electrically connected to the main control chip, and the PD chip at the projection end is electrically connected to the power supply. For a detailed description of the aforementioned power adaptive control method, please refer to the description of the above embodiments, which will not be repeated here.

[0154] Specifically, when the power supply 810 is a PD power supply and the processor 820 finds that the power supply voltage of the power supply 810 meets the target voltage and the power supply power of the power supply 810 meets the target minimum power, it confirms the target voltage as the working voltage; it acquires the target current information and the power supply current information of the power supply 810, compares and processes the target current information and the power supply current information, and obtains the working current based on the processing result; it adjusts the projection working mode according to the working voltage and working current, thereby achieving adaptive power matching, and automatically adjusts the projection working mode according to the adapted power, improving the intelligence level of the projector. This application, by querying whether the power supply 810 is a PD power supply and finding that the power supply voltage and power supply power of the power supply 810 meet the preset requirements, allows the projector to adaptively adjust its own working power according to the output power supported by the power supply 810, achieving automatic adaptation to power supplies with different output power. The power matching reliability is high, the power consumption is low, and it can also automatically adjust the projection working mode according to the adapted power, thereby balancing the projector's performance and usage time, and improving the user experience.

[0155] In one embodiment, this application provides a computer storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of any of the above-described projection correction methods.

[0156] In one example, when a computer program is executed by a processor, it performs the following steps:

[0157] When the power supply is a PD power supply, and the power supply voltage meets the target voltage and the power supply power meets the target minimum power, the target voltage is confirmed as the working voltage; the target current information and the power supply current information are obtained, the target current information and the power supply current information are compared and processed, and the working current is obtained based on the processing result; the projection working mode is adjusted according to the working voltage and the working current.

[0158] Those skilled in the art will understand that all or part of the processes in 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. When executed, the computer program can include the processes of the embodiments of the division operations described above. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0159] 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.

[0160] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. 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 patent application should be determined by the appended claims.

Claims

1. A power adaptive control method, characterized in that, Applied to a projector, the method includes the following steps: When the power supply is a PD power supply, and the power supply voltage of the power supply meets the target voltage and the power supply power meets the target minimum power, the target voltage is confirmed as the operating voltage; the target voltage refers to the input voltage supported by the projector, the target minimum power refers to the minimum input power supported by the projector; the operating voltage refers to the actual operating voltage of the projector. Obtain target current information and power supply current information of the power supply, compare and process the target current information and the power supply current information, and obtain the operating current based on the processing result; Adjust the projection working mode according to the operating voltage and the operating current; The step of adjusting the projection working mode according to the working voltage and the working current includes: The input power is obtained based on the operating voltage and the operating current; When the input power is less than a first preset value and the projector is powered on, the projection working mode is adjusted to power saving mode. When the input power is greater than or equal to the first preset value and the projector is powered on, the projection working mode is adjusted to normal mode. The step of acquiring the target current information and the power supply current information, comparing the target current information and the power supply current information, and obtaining the operating current based on the processing result includes the following steps before: If the power supply voltage does not meet the target voltage or the power supply power does not meet the target minimum power, the projector shall be disabled from powering on; or, The projector must not be powered on if the power supply voltage or current is not found. The step of acquiring the target current information and the power supply current information, comparing the target current information and the power supply current information, and obtaining the operating current based on the processing result includes the following steps before: Obtain the wake-up voltage of the power supply; Adjust the projector to a wake-up state based on the wake-up voltage; The steps of acquiring target current information and power supply current information, comparing and processing the target current information and the power supply current information, and obtaining the operating current based on the processing result include: When the projector is in a wake-up state, the power supply current information of the pre-stored power supply is obtained; Obtain preset target current information, and compare and process the target current information and the supply current information; Based on the comparison and processing results, the operating current information is obtained; After the projector is powered on, based on the operating current information, the power supply is instructed to provide the corresponding operating current. The step of confirming the target voltage as the operating voltage when the power supply is a PD power supply and the power supply voltage of the power supply meets the target voltage and the power supply power meets the target minimum power includes the following before the step of confirming the target voltage as the operating voltage: Obtain the startup voltage of the power supply and establish a PD protocol handshake based on the startup voltage; According to the PD protocol, the protocol voltage of the power supply is obtained; the protocol voltage is used to indicate that the projector is in the initial working state.

2. The power adaptive control method according to claim 1, characterized in that, The target current information includes the target minimum current and the target maximum current; the power supply current information includes the maximum power supply current. The step of comparing the target current information and the supply current information, and obtaining the operating current based on the processing result, includes: When the maximum power supply current is greater than or equal to the target minimum current information, and less than or equal to the target maximum current, the maximum power supply current is confirmed as the operating current. When the maximum power supply current is greater than the target maximum current, the target maximum current is confirmed as the operating current.

3. The power adaptive control method according to claim 1, characterized in that, The step of adjusting the projection working mode according to the working voltage and the working current includes: Obtain the remaining power of the power supply; When the remaining battery power is less than the second preset value, the projection working mode is adjusted to power saving mode; When the remaining battery power is greater than or equal to the second preset value, the projection working mode is adjusted to normal mode.

4. The power adaptive control method according to claim 1 or 3, characterized in that, The projector includes a speaker, a communication module, and a processor; the processor is connected to the speaker and the communication module respectively; the power-saving mode includes at least one of the following: Reduce the brightness of the projector's light source; Reduce the output power of the speaker; Reduce or turn off the output power of the communication module; Reduce the processor's operating frequency.

5. The power adaptive control method according to claim 1, characterized in that, The steps of acquiring target current information and power supply current information, comparing and processing the target current information and the power supply current information, and obtaining the operating current based on the processing result include: After the projector is powered on, the power supply current information of the pre-stored power supply is obtained; Obtain preset target current information, and compare and process the target current information and the supply current information; Based on the comparison and processing results, the operating current information is obtained; Based on the operating current information, the power supply is instructed to provide the corresponding operating current.

6. A projection device, characterized in that, Includes a processor for connecting to the power supply; The processor is used to perform the steps of the power adaptive control method as described in any one of claims 1 to 5.

Images