CN116760925A - Distance-based illumination brightness automatic adjustment method and mobile terminal thereof - Google Patents

Distance-based illumination brightness automatic adjustment method and mobile terminal thereof Download PDF

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Publication number
CN116760925A
CN116760925A CN202310434366.9A CN202310434366A CN116760925A CN 116760925 A CN116760925 A CN 116760925A CN 202310434366 A CN202310434366 A CN 202310434366A CN 116760925 A CN116760925 A CN 116760925A
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China
Prior art keywords
brightness
current
distance
illumination
distance sensor
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CN202310434366.9A
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Chinese (zh)
Inventor
银雪
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Sichuan Kubi Communication Equipment Co ltd
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Sichuan Kubi Communication Equipment Co ltd
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Priority to CN202310434366.9A priority Critical patent/CN116760925A/en
Publication of CN116760925A publication Critical patent/CN116760925A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Environmental & Geological Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Telephone Function (AREA)

Abstract

The invention discloses a distance-based automatic illumination brightness adjusting method and a mobile terminal thereof, wherein the distance-based automatic illumination brightness adjusting method comprises the following steps: when the flashlight function is started, the processor reads current data of the distance sensor; when the current data is judged to be beyond the set working range, the brightness of the lighting lamp is correspondingly increased or decreased. The brightness of the flashlight can be automatically adjusted according to the distance between the shielding object and the mobile terminal, manual operation is not needed, and unnecessary power consumption can be saved.

Description

Distance-based illumination brightness automatic adjustment method and mobile terminal thereof
Technical Field
The invention relates to the technical field of terminals, in particular to an automatic illumination brightness adjusting method based on distance and a mobile terminal thereof.
Background
The mobile terminal has the characteristic of portability, has more internal functions, and can be greatly convenient for users to use in daily work and life. Taking a mobile phone as an example, users often use the flashlight function of the mobile phone to illuminate. The flashlight function is a basic function commonly used in the existing mobile phone, the LED lamp is powered by the LED driving chip on hardware, and the working modes (different application modes) of the LED lamp are controlled according to the application operation of a user on software, such as illumination, flashing, warning lamps and the like.
Based on the characteristics of the high-power LED lamp, the flashlight can enable the mobile phone to heat and scald after long-time or high-brightness illumination in actual use, can accelerate ageing of internal devices, influences the service life of the mobile phone, and can bring scalding risks to users when some mobile phones with poor quality are illuminated for a long time. In addition, some flashlights can be manually operated to adjust the brightness, manual operation is needed, automatic adjustment cannot be achieved, unnecessary power consumption of the mobile phone is increased to a certain extent, and long-time cruising of the mobile phone is not facilitated.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a distance-based automatic illumination brightness adjustment method and a mobile terminal thereof, so as to solve the problem that the existing mobile terminal cannot automatically adjust illumination brightness.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an automatic adjustment method of illumination brightness based on distance, comprising the steps of:
when the flashlight function is started, the processor reads current data of the distance sensor;
when the current data is judged to be beyond the set working range, the brightness of the lighting lamp is correspondingly increased or decreased.
In the distance-based automatic illumination brightness adjustment method, before the step of reading current data of the distance sensor by the processor when the flashlight function is started, the method further comprises:
when the function of the flashlight is detected to be started, the distance sensor is initialized.
In the distance-based automatic illumination brightness adjustment method, when the current data exceeds the set working range, the step of performing corresponding brightness enhancement or dimming adjustment on the brightness of the illumination lamp comprises the following steps:
judging whether the current data of the distance sensor is larger than or equal to a first threshold value and smaller than or equal to a second threshold value, and outputting a reference current to light the lighting lamp if the current data of the distance sensor is larger than or equal to the first threshold value and smaller than or equal to the second threshold value; otherwise, executing the next step;
judging whether the current data of the distance sensor is smaller than the first threshold value, if so, increasing the reference current and then turning on the lighting lamp; otherwise, executing the next step;
and judging whether the current data of the distance sensor is larger than the second threshold value, if so, reducing the reference current and then dimming the lighting lamp.
In the distance-based automatic illumination brightness adjusting method, the step of increasing the reference current and then brightening the illumination lamp comprises the following steps:
and adding the reference current and the set stepping current to obtain a value of the power supply current, and outputting the power supply current to be increased to lighten the brightness of the illuminating lamp.
In the distance-based automatic illumination brightness adjustment method, the step of reducing the reference current and then dimming the illumination lamp comprises the following steps:
subtracting the reference current from the set stepping current value to the power supply current according to the condition that the current data of the distance sensor is larger than the second threshold value; the calculation formula is as follows: io=ii-Ir, io is a supply current, ii is a reference current, and Ir is a stepping current.
In the distance-based automatic illumination brightness adjustment method, after the step of outputting the reference current to light the illumination lamp, the method further comprises:
and when the acquired temperature value is judged to be more than or equal to the high-temperature alarm threshold value, carrying out high-temperature alarm prompt on a display screen of the mobile terminal.
The mobile terminal for realizing the distance-based illumination brightness automatic adjustment method comprises a distance sensor, a processor, a driving module and an illumination lamp;
when the flashlight function is started, the processor is used for reading current data of the distance sensor, and when the current data exceeds the set working range, the driving module is controlled to correspondingly increase or decrease the brightness of the lighting lamp
The mobile terminal also comprises a temperature detection module for detecting the temperature of the illuminating lamp and outputting a corresponding temperature value; and when the processor judges that the acquired temperature value is greater than or equal to the high-temperature alarm threshold value, the processor prompts the high-temperature alarm on the display screen of the mobile terminal.
Compared with the prior art, the automatic illumination brightness adjusting method based on the distance and the mobile terminal thereof provided by the invention comprise the following steps: when the flashlight function is started, the processor reads current data of the distance sensor; when the current data is judged to be beyond the set working range, the brightness of the lighting lamp is correspondingly increased or decreased. The brightness of the flashlight can be automatically adjusted according to the distance between the shielding object and the mobile terminal, manual operation is not needed, and unnecessary power consumption can be saved.
Drawings
FIG. 1 is a flow chart of steps of a distance-based automatic illumination brightness adjustment method provided by the invention;
fig. 2 is a schematic block diagram of a mobile terminal provided by the present invention.
Detailed Description
The invention provides a distance-based automatic illumination brightness adjusting method and a mobile terminal thereof, which can automatically adjust the brightness of a flashlight according to the distance between a user and the mobile terminal, do not need manual operation, and can also save unnecessary power consumption. In order to make the objects, technical solutions and effects of the present invention clearer and more specific, the present invention will be described in further detail below with reference to the accompanying drawings and examples. 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 invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any module and all combination of one or more of the associated listed items.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Fig. 1 is a flowchart of a distance-based automatic illumination brightness adjustment method according to the present invention. As shown in fig. 1, the automatic illumination brightness adjusting method includes the steps of:
s10, when the flashlight function is started, the processor reads current data of the distance sensor;
and S20, when the current data exceeds the set working range, carrying out corresponding brightness enhancement or dimming adjustment on the brightness of the lighting lamp.
The automatic illumination brightness adjusting method based on the distance is suitable for mobile terminals with flashlight functions and current-adjustable LED drive ICs (chips), such as mobile phones, intelligent watches and the like. The brightness self-adjusting function (particularly corresponding program codes can be written in a processor) is added in the existing flashlight function of the mobile terminal.
Based on the mobile terminal being typically used by the user, in said step S10 the covering is typically a respective part of the user, such as the user' S face or body; in the specific implementation, the shielding object may be other, such as a wall surface, a table, etc., which is not limited herein. The distance between the front surface of the mobile terminal and the user is detected through the added distance sensor, and the infrared light reflection principle is utilized: namely, an infrared diode inside the distance sensor emits infrared light outwards, the infrared light which is blocked by the blocking object and reflected back is absorbed by the photodiode of the distance sensor, the obtained data can reflect the distance between the blocking object and the mobile terminal, and the processor reads the data to judge whether the preset threshold condition is met or not at present, and then corresponding operation is carried out.
In an actual use process, a display screen of the mobile terminal faces a user, an illuminating lamp is arranged on the back of the mobile terminal, and in order to avoid the influence of the handheld mobile terminal on the receiving and transmitting of infrared light, a distance sensor is preferably arranged on the top of the front of the mobile terminal, such as the vicinity of a front camera, the front of the mobile terminal faces the face or the body of the user or faces other shielding objects, the distance sensor can detect corresponding data, and the closer the distance is, the larger the value of the data is, so that the distance between the mobile terminal and the shielding objects is reflected.
Each time the mobile terminal is started, before the step S10, the distance sensor is initialized to calibrate. When the flashlight function of the mobile terminal is detected to be started, the processor reads the current data of the distance sensor to judge which brightness gear threshold condition is met currently, so that the brightness of the flashlight is adjusted.
In this embodiment, the step S20 specifically includes:
step 21, judging whether the current data is larger than or equal to a first threshold value and smaller than or equal to a second threshold value, and outputting a reference current to light the lighting lamp if the current data is larger than or equal to the first threshold value and smaller than or equal to the second threshold value; otherwise, step 22 is performed.
The method comprises the steps that in a normal illumination state, the working range is the condition that when a flashlight function is normally used, namely, the distance between a mobile terminal and a user meets a first threshold value or more and a second threshold value or less; at this time, the brightness of the illumination lamp lighted according to the reference current is the normal brightness of the flashlight function. The reference current is provided by the driving module 30, and the driving module 30 can be composed of an LED driving chip and a peripheral circuit thereof when in implementation.
Step 22, judging whether the current data of the distance sensor is smaller than the first threshold value, if yes, increasing the reference current and then turning on the illuminating lamp; otherwise, step 23 is performed.
The step is that the super-bright illumination state is smaller than the first threshold value, the distance between the mobile terminal and the user is far, if the user stretches hands to shine to a far distance, the brightness of the required quantity illumination lamp is increased at the moment, the super-bright illumination can provide enough bright illumination effect for a scene at the far distance, and the vision of the user is ensured to be still clear.
When the reference current is increased, a fixed stepping current is arranged to be superposed on the reference current, so that a final power supply current is obtained to light the illuminating lamp. The duty ratio of PWM signals of the LED driving chip is regulated to regulate the magnitude of the finally output power supply current, and the calculation formula is as follows: io=ii+ir, io represents the supply current output after regulation, ii represents the reference current, and Ir represents the stepping current.
Preferably, this step may also set more brightness levels, for example, adding a brighter level with brightness less than that of the super bright illumination, the software may add a different threshold, for example, a third threshold, and a corresponding Ir value, for example, ir2. And selecting and increasing corresponding stepping current values according to the threshold condition reached by the current data of the distance sensor, so that the brightness is automatically adjusted in more gears along with the distance in the super-bright illumination state.
Preferably, the power supply current can be dynamically increased or decreased according to the current data of the distance sensor, the stepping current is adjusted according to the difference value between the first threshold value and the value of the data, and the reference current and the adjusted stepping current are added to obtain the power supply current. That is, when the data is smaller than the first threshold, the quotient of the difference between the first threshold and the data divided by the step value is several, and then several step currents are added on the basis of the current supply current, and the calculation formula is as follows: io=ii+n×ir, n representing a quotient. The step value represents the size of the distance change and the brightness adjustment degree, and the brightness is correspondingly adjusted once when the distance between the mobile terminal and the user is changed by 1 step value. It is to be understood that the definition of threshold and data is not in centimeter units, but rather a specific number, e.g., 1000, 3000, etc., the specific setting is related to the noise floor value of the distance sensor. For example, the first threshold is 2000, the step value is 300, the first current data is 1600, (2000-1600)/(300=1.3, and the quotient is 1.3, then io=ii+1.3×ir. The second current data is 1100, (2000-1100)/(300=3, quotient is 3, io=ii+3×ir. The third current data is 1900, (2000-1900)/(300=0.3, and quotient is 0.3), io=ii+0.3×ir. The quotient is increased and decreased correspondingly to control the increase and decrease of the power supply current, so that the brightness is automatically and dynamically adjusted to be bright and dark along with the distance in the super-bright illumination state.
And step 23, judging whether the current data of the distance sensor is larger than the second threshold value, if so, reducing the reference current and then dimming the lighting lamp.
Step 21 is used for judging whether the current data of the distance sensor is greater than or equal to the first threshold and less than or equal to the second threshold, step 22 is used for judging whether the distance value is smaller than the first threshold, and if so, the distance value can only be greater than the second threshold, namely step 23 is in an energy-saving illumination state, which means that the distance between the mobile terminal and the user is relatively close, and at the moment, the brightness can be properly reduced to save the electric energy consumption.
Preferably, the brightness of the scheme can be adjusted to three gears of high brightness, normal brightness and low brightness. Subtracting the reference current and the set stepping current value to supply current under the condition that the current distance sensor data is judged to be larger than a second threshold value according to the processor; the calculation formula is as follows: io=ii-Ir.
In step 23, more brightness levels may be set, for example, a darker level with brightness less than that of the low-brightness illumination may be added, and the software may add a different threshold, for example, a fourth threshold, and a corresponding Ir value, for example, ir3. And selecting and reducing the corresponding stepping current value according to the threshold condition reached by the current distance sensor data, so that the brightness is automatically adjusted in more gears along with the distance in an energy-saving illumination state.
Preferably, in step 23, the power supply current can be dynamically increased or decreased according to the current data of the distance sensor, the step current is adjusted according to the difference value between the data and the second threshold value, and the reference current and the adjusted step current are subtracted to obtain the power supply current, where the calculation formula is as follows: io=ii-m×ir, m is the quotient of the difference of the data from the second threshold divided by the step value. I.e. the difference between the second threshold and the data divided by the step value is a few, in case the data is larger than said second threshold, the step current is reduced by a few on the basis of the present supply current. For example, the second threshold is 1500, the step value is 300, the first time the current data is 1700, (1700-1500)/(300=0.67, the quotient is 0.67 (rounded), then io=ii-0.67×ir. The second current data is 2100, (2100-1500)/(300=2, quotient 2, io=ii-2×ir. The third current data is 1800, (1800-1500)/(300=1, quotient is 1, io=ii-1×ir. The quotient is increased and reduced correspondingly to control the increase and the decrease of the power supply current, so that the brightness is automatically and dynamically adjusted to be bright and dark along with the distance in the energy-saving illumination state.
It is understood that when super bright illumination is performed, heat is easily generated due to a large power supply current. A temperature detection module, such as an NTC thermistor or temperature sensor, may be added on the circuit board near the lamp for the system to detect temperature. The high-temperature alarm threshold is set in the processor, when the processor judges that the temperature value calculated according to the resistance value of the NTC thermistor or the temperature value acquired by the temperature sensor is greater than or equal to the high-temperature alarm threshold, the high-temperature alarm prompt can be carried out on the display screen of the mobile terminal to remind a user to turn off the flashlight or reduce the using distance so as to reduce the brightness, so that the user is prevented from being scalded due to heating caused by long-time highlighting, the aging of other devices on the high-temperature acceleration circuit board can be avoided, and the service life of the mobile terminal is prolonged.
Referring to fig. 2, the present embodiment further discloses a mobile terminal, which includes a distance sensor 10, a processor 20, a driving module 30 and an illumination lamp 40, on the basis of disclosing the above-mentioned automatic adjustment method of illumination brightness based on distance; when the flashlight function is started, the processor 20 is used for reading current data of the distance sensor 10, and when the current data exceeds the set working range, the driving module 30 is controlled to correspondingly increase or decrease the brightness of the lighting lamp.
Preferably, the mobile terminal further includes a temperature detection module 50 disposed near the illumination lamp for detecting a temperature of the illumination lamp and outputting a corresponding temperature value. And when the processor judges that the acquired temperature value is greater than or equal to the high-temperature alarm threshold value, the processor prompts the high-temperature alarm on the display screen of the mobile terminal.
In summary, in the distance-based automatic illumination brightness adjusting method and the mobile terminal provided by the invention, when the flashlight function is used, the illumination brightness can be automatically adjusted by adjusting the distance between the mobile terminal and the user, so that the existing normal illumination is ensured, meanwhile, the super-bright illumination and the energy-saving illumination are increased, the alarm prompt of the mobile terminal when the body heats due to long-time illumination can be detected, the electricity is saved, meanwhile, scalding can be prevented, the use safety is improved, the overheat burning of devices is prevented, and the service life of the mobile terminal is prolonged.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims (8)

1. The automatic illumination brightness adjusting method based on the distance is characterized by comprising the following steps:
when the flashlight function is started, the processor reads current data of the distance sensor;
when the current data is judged to be beyond the set working range, the brightness of the lighting lamp is correspondingly increased or decreased.
2. The method of automatically adjusting the brightness of a distance-based illumination of claim 1, wherein, prior to the step of the processor reading current data from the distance sensor when the flashlight function is activated, further comprising:
when the function of the flashlight is detected to be started, the distance sensor is initialized.
3. The method for automatically adjusting the brightness of the illumination based on the distance according to claim 1, wherein the step of performing the corresponding brightness increase or brightness decrease adjustment on the brightness of the illumination lamp when the current data is judged to be out of the set working range comprises:
judging whether the current data of the distance sensor is larger than or equal to a first threshold value and smaller than or equal to a second threshold value, and outputting a reference current to light the lighting lamp if the current data of the distance sensor is larger than or equal to the first threshold value and smaller than or equal to the second threshold value; otherwise, executing the next step;
judging whether the current data of the distance sensor is smaller than the first threshold value, if so, increasing the reference current and then turning on the lighting lamp; otherwise, executing the next step;
and judging whether the current data of the distance sensor is larger than the second threshold value, if so, reducing the reference current and then dimming the lighting lamp.
4. The method of automatically adjusting the brightness of illumination based on distance according to claim 3, wherein the step of increasing the reference current to turn on the illumination lamp comprises:
and adding the reference current and the set stepping current to obtain a value of the power supply current, and outputting the power supply current to be increased to lighten the brightness of the illuminating lamp.
5. A distance-based automatic illumination intensity adjustment method according to claim 3, wherein the step of reducing the reference current and subsequently dimming the illumination lamp comprises:
subtracting the reference current from the set stepping current value to the power supply current according to the condition that the current data of the distance sensor is larger than the second threshold value; the calculation formula is as follows: io=ii-Ir, io is a supply current, ii is a reference current, and Ir is a stepping current.
6. The method of automatically adjusting the illumination brightness based on the distance according to claim 3, wherein after the step of outputting the reference current to light the illumination lamp, the method further comprises:
and when the acquired temperature value is judged to be more than or equal to the high-temperature alarm threshold value, carrying out high-temperature alarm prompt on a display screen of the mobile terminal.
7. A mobile terminal for implementing the distance-based illumination brightness automatic adjustment method of claim 1, characterized by comprising a distance sensor, a processor, a driving module and an illumination lamp;
when the flashlight function is started, the processor is used for reading current data of the distance sensor, and when the current data exceeds the set working range, the driving module is controlled to correspondingly lighten or reduce the brightness of the lighting lamp.
8. The mobile terminal of claim 7, further comprising a temperature detection module for detecting a temperature of the illumination lamp and outputting a corresponding temperature value; and when the processor judges that the acquired temperature value is greater than or equal to the high-temperature alarm threshold value, the processor prompts the high-temperature alarm on the display screen of the mobile terminal.
CN202310434366.9A 2023-04-21 2023-04-21 Distance-based illumination brightness automatic adjustment method and mobile terminal thereof Pending CN116760925A (en)

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Application Number Priority Date Filing Date Title
CN202310434366.9A CN116760925A (en) 2023-04-21 2023-04-21 Distance-based illumination brightness automatic adjustment method and mobile terminal thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310434366.9A CN116760925A (en) 2023-04-21 2023-04-21 Distance-based illumination brightness automatic adjustment method and mobile terminal thereof

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CN116760925A true CN116760925A (en) 2023-09-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117355006A (en) * 2023-12-04 2024-01-05 茂迪太阳能科技（东莞）有限公司 Method and device for illuminating solar flashlight, solar flashlight and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117355006A (en) * 2023-12-04 2024-01-05 茂迪太阳能科技（东莞）有限公司 Method and device for illuminating solar flashlight, solar flashlight and storage medium
CN117355006B (en) * 2023-12-04 2024-03-19 茂迪太阳能科技（东莞）有限公司 Method and device for illuminating solar flashlight, solar flashlight and storage medium

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