CN103353621A - Method for calibrating proximity sensor of mobile terminal, and mobile terminal - Google Patents
Method for calibrating proximity sensor of mobile terminal, and mobile terminal Download PDFInfo
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- CN103353621A CN103353621A CN2013102379179A CN201310237917A CN103353621A CN 103353621 A CN103353621 A CN 103353621A CN 2013102379179 A CN2013102379179 A CN 2013102379179A CN 201310237917 A CN201310237917 A CN 201310237917A CN 103353621 A CN103353621 A CN 103353621A
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- light intensity
- infrared light
- threshold value
- infrared
- portable terminal
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Abstract
The invention discloses a method for calibrating a proximity sensor of a mobile terminal, and the mobile terminal. The method comprises the following steps of presetting received infrared light intensity threshold values; and during the use of the mobile terminal, determining whether a currently received infrared light intensity value is in a range of the threshold values or not firstly once the proximity sensor starts to work, and if not, adjusting emission current of an infrared LED in the proximity sensor until the received infrared light intensity value is in the range of the threshold values. The mobile terminal comprises an infrared LED, an infrared receiver, a photoelectric conversion module, an analog-to-digital conversion module, a storage module and a controller, wherein the emission current of the infrared LED is adjustable; the controller compares the infrared light intensity value with the threshold values, and adjusts the emission current of the infrared LED according to comparison results. According to the method and the mobile terminal, calibration can be performed on a proximity sensor of a single mobile terminal, and the calibration can be performed actively due to different environments, and thus relatively reliable function experience is provided for users.
Description
Technical field
The present invention relates to the mobile terminal device research field, particularly a kind of method and this portable terminal that the portable terminal proximity transducer is calibrated.
Background technology
Proximity transducer is the contact measurement modes such as replacement limit switch, detects as the general name of the sensor of purpose need not the contact detection object.This class sensor can not wear and tear and damage check object, the not impact of examined object color.The fields such as face detection, distance detection now have been widely used in.
Touch-screen mobile phone is as example in the portable terminal, it is equipped with proximity transducer at headphone, this sensor correspondence near the method to set up of threshold values is: the intensity level that reads infrared light transducer[sensor when at every turn starting shooting, and after setting start, benchmark approaches away from threshold values, software can be calibrated first the intensity level of infrared sensor at every turn according to practical service environment when opening near function, can be referred to as the mean value, this mean value can be in certain scope generally speaking, normal with assurance function, namely when reach certain approach apart from the time must put out screen, reach certain must bright screen during away from distance.The mean value generally is the time configuration of dispatching from the factory, can not Self-adjustment when the user uses, say nothing of active accommodation.
But because structural design, complete machine equipment difference, and proximity transducer itself can be subjected to environment temperature, the impact of object, same type of sensor on every side, often causes having the machine of certain probability, its mean value is understood larger or less.If the mean value causes just putting out screen apart from very near than senior general, if the mean value is too little, then often distance is also far, just spreads its tail.To have a strong impact on like this user experiences.
Publication number is that the Chinese invention patent of CN102761648A discloses the method and system that a kind of calibration has the portable terminal of photoelectric type proximity transducer, provided a kind of typical light typical proximity sensor in this patent, generally include the optical front-end that transmits and receives the light signal function, analog mixed-signal treatment circuit and some other mechanical mechanisms form, principle of work is: light emitting diode (LED) the utilizing emitted light signal by optical front-end arrives the barrier surface, light signal generation transmission, get back to the optical diode detecting device of optical front-end after scattering or the emission, this detecting device is converted to current signal with light signal, obtains the ADC(analog to digital conversion after the analog mixed-signal processing circuit processes) value.This patent is before dispatching from the factory portable terminal to be calibrated, and need to actually repeatedly test, and the user can not adjust equally in use.
Therefore, how can calibrate for the proximity transducer of single mobile terminal self, and this calibration can be because of the difference of environment initiatively occurs, have important using value.
Summary of the invention
Fundamental purpose of the present invention is to overcome the shortcoming of prior art with not enough, a kind of method that the portable terminal proximity transducer is calibrated is provided, the method can be eliminated mobile terminal design, add the impact of the different errors of each terminal that causes man-hour, and guaranteeing that all proximity transducer can normally use under the environment for use arbitrarily, for the user provides more reliable functional experience.
Another object of the present invention is to provide a kind of portable terminal that adopts said method.This portable terminal can all detect proximity transducer when each the use, in case find to exceed preset range, then regulates, and promotes widely the user and experiences.
Purpose of the present invention realizes by following technical scheme: a kind of method that the portable terminal proximity transducer is calibrated may further comprise the steps:
(1) the default infrared light intensity threshold scope that receives; The infrared light intensity threshold that receives is two, and one is near threshold value, surpass this threshold value then when conversation screen extinguish, one is away from threshold value, is lower than then screen opening of this threshold value, threshold range is [away from threshold value, near threshold value];
(2) when portable terminal uses, proximity transducer in case the infrared light intensity level that current reception is namely judged first in work whether in above-mentioned threshold range, if so, then normal operation; If not, then enter step (3);
(3) transmitter current of infrared LED in the adjusting proximity sensor is until the infrared light intensity level that receives is in above-mentioned threshold range.
Preferably, describedly be built in the portable terminal before dispatching from the factory near threshold value with away from threshold value.
Preferably, in the described step (2), be provided with several transmitter current values in the infrared LED, in case proximity transducer work is at first chosen intermediate value as the fixed transmission electric current.Regulate number of times to reduce as far as possible.
Concrete, described step (3), the infrared light intensity level of establishing current reception is X, is X1 away from threshold value, is X2 near threshold value, then:
If X〉whether X2, then reduce transmitter current, and again read new infrared light intensity level and see in preset range;
If X＜X1 then increases transmitter current, and again read new infrared light intensity level and see whether in preset range.
Further, in the described step (3), the transmitter current of infrared LED adopts the PWM mode to modulate.The light that infrared LED is sent is stable, makes measurement more accurate.
A kind of portable terminal that adopts said method comprises:
Infrared LED, its transmitter current is adjustable, is used for the utilizing emitted light signal and arrives the barrier surface;
Infrared remote receiver is for the light signal after receiving optical signals generation transmission, scattering or the emission;
Photoelectric conversion module is used for the light signal that infrared remote receiver receives is converted to electric signal;
Analog-to-digital conversion module is used for converting the electrical signal to the infrared light intensity level;
Memory module is used for the default infrared light intensity threshold of storage;
Controller is compared for the infrared light intensity level that analog-to-digital conversion module is obtained and the threshold value of memory module, according to comparison result, the transmitter current of infrared LED is regulated.
Preferably, described infrared LED adopts the led drive circuit take the pulse-width modulation PWM chip as core, and this circuit links to each other with controller.Thereby can make current constant, light signal is constant.
The present invention compared with prior art has following advantage and beneficial effect:
The defective that causes during for mobile terminal design adds the different errors that each terminal of causing man-hour exists, and prior art can not be processed mostly, perhaps need to calibrate one by one before dispatching from the factory, and also out of true wastes time and energy.Simultaneously, because proximity transducer itself can be subjected to environment temperature, the impact of object, same type of sensor on every side, fixing threshold value can't satisfy the requirement of application.The present invention is by default threshold value, then all it is being detected when using proximity transducer each under the constant prerequisite of this threshold value, in case find to exceed preset range, just transmitter current is regulated, the infrared light intensity level of reception can be remained in the default threshold range all the time, can promote widely the user and experience.
Description of drawings
Fig. 1 is the schematic flow sheet of the inventive method.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment 1
As shown in Figure 1, a kind of method that the portable terminal proximity transducer is calibrated may further comprise the steps:
(1) the default infrared light intensity threshold that receives comprises two, and one is near threshold X 2, surpass this threshold value then when conversation screen extinguish, one is away from threshold X 1, is lower than then screen opening of this threshold value.Two are built in the portable terminal before all dispatching from the factory.Be the confidence band of mean value, be made as [X1, X2].
(2) when portable terminal uses, proximity transducer is work in a single day, and then infrared LED is chosen the intermediate value of its adjustable several transmitter current values as the fixed transmission electric current.Then the infrared light intensity level of judging current reception whether in above-mentioned threshold range, if so, then normal operation; If not, then enter step (3).
(3) the infrared light intensity level of establishing current reception is X, then: if X〉whether X2, then reduce transmitter current, and again read new infrared light intensity level and see in preset range; If X＜X1 then increases transmitter current, and again read new infrared light intensity level and see whether in preset range.Repeatedly repeat above-mentioned steps, until the infrared light intensity level that receives is in above-mentioned threshold range.
In the present embodiment, the transmitter current of infrared LED adopts the PWM mode to modulate.
Method described in the present embodiment can realize by following portable terminal.This portable terminal comprises: infrared LED, and its transmitter current is adjustable, is used for the utilizing emitted light signal and arrives the barrier surface; Infrared remote receiver is for the light signal after receiving optical signals generation transmission, scattering or the emission; Photoelectric conversion module is used for the light signal that infrared remote receiver receives is converted to electric signal; Analog-to-digital conversion module is used for converting the electrical signal to the infrared light intensity level; Memory module is used for the default infrared light intensity threshold of storage; Controller is compared for the infrared light intensity level that analog-to-digital conversion module is obtained and the threshold value of memory module, according to comparison result, the transmitter current of infrared LED is regulated.Wherein, described infrared LED adopts the led drive circuit take the pulse-width modulation PWM chip as core, and this circuit links to each other with controller.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. the method that the portable terminal proximity transducer is calibrated is characterized in that, may further comprise the steps:
(1) the default infrared light intensity threshold scope that receives, the infrared light intensity threshold is two, one is near threshold value, surpass this threshold value then when conversation screen extinguish, one is away from threshold value, is lower than then screen opening of this threshold value, threshold range is [away from threshold value, near threshold value];
(2) when portable terminal uses, proximity transducer in case the infrared light intensity level that current reception is namely judged first in work whether in above-mentioned threshold range, if so, then normal operation; If not, then enter step (3);
(3) transmitter current of infrared LED in the adjusting proximity sensor is until the infrared light intensity level that receives is in above-mentioned threshold range.
2. the method that the portable terminal proximity transducer is calibrated according to claim 1 is characterized in that, describedly is built in the portable terminal before dispatching from the factory near threshold value with away from threshold value.
3. the method that the portable terminal proximity transducer is calibrated according to claim 1, it is characterized in that, in the described step (2), be provided with several transmitter current values in the infrared LED, in case proximity transducer work is at first chosen intermediate value as the fixed transmission electric current.
4. the method that the portable terminal proximity transducer is calibrated according to claim 1 is characterized in that, described step (3), and the infrared light intensity level of establishing current reception is X, is X1 away from threshold value, is X2 near threshold value, then:
If X〉whether X2, then reduce transmitter current, and again read new infrared light intensity level and see in preset range;
If X＜X1 then increases transmitter current, and again read new infrared light intensity level and see whether in preset range.
5. the method that the portable terminal proximity transducer is calibrated according to claim 4 is characterized in that, in the described step (3), the transmitter current of infrared LED adopts the PWM mode to modulate.
6. a portable terminal that adopts method claimed in claim 1 is characterized in that, comprising:
Infrared LED, its transmitter current is adjustable, is used for the utilizing emitted light signal and arrives the barrier surface;
Infrared remote receiver is for the light signal after receiving optical signals generation transmission, scattering or the emission;
Photoelectric conversion module is used for the light signal that infrared remote receiver receives is converted to electric signal;
Analog-to-digital conversion module is used for converting the electrical signal to the infrared light intensity level;
Memory module is used for the default infrared light intensity threshold of storage;
Controller is compared for the infrared light intensity level that analog-to-digital conversion module is obtained and the threshold value of memory module, according to comparison result, the transmitter current of infrared LED is regulated.
7. portable terminal according to claim 6 is characterized in that, described infrared LED adopts the led drive circuit take the pulse-width modulation PWM chip as core, and this circuit links to each other with controller.
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103561165A (en) * | 2013-10-18 | 2014-02-05 | 广东欧珀移动通信有限公司 | Method and device for preventing sticking film from affecting normal working of proximity transducer |
| CN103941310A (en) * | 2014-04-09 | 2014-07-23 | 苏州佳世达电通有限公司 | Correcting method and system of proximity sensor |
| CN104407399A (en) * | 2014-12-02 | 2015-03-11 | 三星半导体(中国)研究开发有限公司 | Method for calibrating proximity sensor in portable terminal |
| CN104467762A (en) * | 2014-12-05 | 2015-03-25 | 青岛鼎信通讯股份有限公司 | Method for modulating transmission intensity of infrared transmission pipe through PWM |
| CN104570144A (en) * | 2013-10-24 | 2015-04-29 | 展讯通信（上海）有限公司 | Self-adaptive induction threshold adjusting system and method for proximity sensor |
| CN105025159A (en) * | 2015-06-05 | 2015-11-04 | 广东欧珀移动通信有限公司 | A proximity sensor adjusting method and apparatus |
| CN105334631A (en) * | 2014-07-24 | 2016-02-17 | 浙江亿思达显示科技有限公司 | 3D glasses resistant to infrared interference |
| WO2016049861A1 (en) * | 2014-09-30 | 2016-04-07 | 华为技术有限公司 | Method and device for controlling proximity optical sensor, and mobile terminal |
| CN106289360A (en) * | 2015-05-19 | 2017-01-04 | 科沃斯机器人股份有限公司 | The detection method of sensor reliability and oneself mobile processing means and system |
| CN106323353A (en) * | 2016-08-12 | 2017-01-11 | 广东欧珀移动通信有限公司 | Calibration method and device for proximity sensor, and terminal |
| CN106941551A (en) * | 2017-02-28 | 2017-07-11 | 努比亚技术有限公司 | Mobile terminal, mobile terminal light sensation calibrating installation, method and system |
| CN107688413A (en) * | 2017-08-07 | 2018-02-13 | 广东欧珀移动通信有限公司 | Proximity transducer, proximity transducer output control method and terminal device |
| CN107943345A (en) * | 2017-11-22 | 2018-04-20 | 广东欧珀移动通信有限公司 | Calibration method, device, storage medium and the electronic equipment of proximity sensor |
| CN109738004A (en) * | 2019-01-24 | 2019-05-10 | Oppo广东移动通信有限公司 | The calibration method and device, electronic equipment and storage medium of proximity sensor |
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| CN111337907A (en) * | 2020-02-26 | 2020-06-26 | 歌尔股份有限公司 | Near object sensor calibration method, device, equipment and computer medium |
| CN112198520A (en) * | 2020-09-29 | 2021-01-08 | 上海兰宝传感科技股份有限公司 | Method for reducing range finding blind area of infrared photoelectric sensor |
| CN112665627A (en) * | 2020-12-24 | 2021-04-16 | 佛山市顺德区美的电子科技有限公司 | Method and device for calibrating infrared performance of air conditioner and storage medium |
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| CN103561165A (en) * | 2013-10-18 | 2014-02-05 | 广东欧珀移动通信有限公司 | Method and device for preventing sticking film from affecting normal working of proximity transducer |
| CN103561165B (en) * | 2013-10-18 | 2015-06-17 | 广东欧珀移动通信有限公司 | Method and device for preventing sticking film from affecting normal working of proximity transducer |
| CN104570144A (en) * | 2013-10-24 | 2015-04-29 | 展讯通信（上海）有限公司 | Self-adaptive induction threshold adjusting system and method for proximity sensor |
| CN103941310A (en) * | 2014-04-09 | 2014-07-23 | 苏州佳世达电通有限公司 | Correcting method and system of proximity sensor |
| CN103941310B (en) * | 2014-04-09 | 2017-02-15 | 苏州佳世达电通有限公司 | Correcting method and system of proximity sensor |
| CN105334631A (en) * | 2014-07-24 | 2016-02-17 | 浙江亿思达显示科技有限公司 | 3D glasses resistant to infrared interference |
| WO2016049861A1 (en) * | 2014-09-30 | 2016-04-07 | 华为技术有限公司 | Method and device for controlling proximity optical sensor, and mobile terminal |
| CN105519086A (en) * | 2014-09-30 | 2016-04-20 | 华为技术有限公司 | Method and device for controlling proximity optical sensor, and mobile terminal |
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| CN104467762A (en) * | 2014-12-05 | 2015-03-25 | 青岛鼎信通讯股份有限公司 | Method for modulating transmission intensity of infrared transmission pipe through PWM |
| CN106289360A (en) * | 2015-05-19 | 2017-01-04 | 科沃斯机器人股份有限公司 | The detection method of sensor reliability and oneself mobile processing means and system |
| CN106289360B (en) * | 2015-05-19 | 2019-10-22 | 科沃斯机器人股份有限公司 | The detection method of sensor reliability and its certainly mobile processing unit and system |
| CN105025159B (en) * | 2015-06-05 | 2018-04-17 | 广东欧珀移动通信有限公司 | proximity sensor adjusting method and device |
| CN105025159A (en) * | 2015-06-05 | 2015-11-04 | 广东欧珀移动通信有限公司 | A proximity sensor adjusting method and apparatus |
| CN106323353A (en) * | 2016-08-12 | 2017-01-11 | 广东欧珀移动通信有限公司 | Calibration method and device for proximity sensor, and terminal |
| CN106941551B (en) * | 2017-02-28 | 2020-07-07 | 陈惠金 | Mobile terminal, mobile terminal light sensation calibration device, method and system |
| CN106941551A (en) * | 2017-02-28 | 2017-07-11 | 努比亚技术有限公司 | Mobile terminal, mobile terminal light sensation calibrating installation, method and system |
| CN107688413A (en) * | 2017-08-07 | 2018-02-13 | 广东欧珀移动通信有限公司 | Proximity transducer, proximity transducer output control method and terminal device |
| CN107688413B (en) * | 2017-08-07 | 2021-05-07 | Oppo广东移动通信有限公司 | Proximity sensor, proximity sensor output control method, and terminal device |
| CN107943345A (en) * | 2017-11-22 | 2018-04-20 | 广东欧珀移动通信有限公司 | Calibration method, device, storage medium and the electronic equipment of proximity sensor |
| CN107943345B (en) * | 2017-11-22 | 2020-10-02 | Oppo广东移动通信有限公司 | Method and device for calibrating proximity sensor, storage medium and electronic equipment |
| CN109738004A (en) * | 2019-01-24 | 2019-05-10 | Oppo广东移动通信有限公司 | The calibration method and device, electronic equipment and storage medium of proximity sensor |
| CN109738004B (en) * | 2019-01-24 | 2021-02-26 | Oppo广东移动通信有限公司 | Method and device for calibrating proximity sensor, electronic equipment and storage medium |
| CN113574417A (en) * | 2019-03-14 | 2021-10-29 | 株式会社理光 | Detection device, detection system and detection method |
| CN110441826A (en) * | 2019-07-30 | 2019-11-12 | 欧姆龙(上海)有限公司 | The teaching method and non-visible light sensor of sensor |
| CN111337907A (en) * | 2020-02-26 | 2020-06-26 | 歌尔股份有限公司 | Near object sensor calibration method, device, equipment and computer medium |
| CN111337907B (en) * | 2020-02-26 | 2022-03-25 | 歌尔光学科技有限公司 | Near object sensor calibration method, device, equipment and computer medium |
| CN112198520A (en) * | 2020-09-29 | 2021-01-08 | 上海兰宝传感科技股份有限公司 | Method for reducing range finding blind area of infrared photoelectric sensor |
| CN112198520B (en) * | 2020-09-29 | 2022-11-04 | 上海兰宝传感科技股份有限公司 | Method for reducing range finding blind area of infrared photoelectric sensor |
| CN112665627A (en) * | 2020-12-24 | 2021-04-16 | 佛山市顺德区美的电子科技有限公司 | Method and device for calibrating infrared performance of air conditioner and storage medium |
| CN112665627B (en) * | 2020-12-24 | 2023-10-10 | 佛山市顺德区美的电子科技有限公司 | Method, device and storage medium for calibrating infrared performance of air conditioner |
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