CN102271177A - Method and system for calibrating proximity sensor of mobile phone - Google Patents
Method and system for calibrating proximity sensor of mobile phone Download PDFInfo
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- CN102271177A CN102271177A CN2011102006780A CN201110200678A CN102271177A CN 102271177 A CN102271177 A CN 102271177A CN 2011102006780 A CN2011102006780 A CN 2011102006780A CN 201110200678 A CN201110200678 A CN 201110200678A CN 102271177 A CN102271177 A CN 102271177A
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Abstract
The invention relates to the technical field of a mobile terminal, and discloses a method and system for calibrating a proximity sensor of a mobile phone. The method comprises the steps of fixing the mobile phone with the proximity sensor on a test fixture, arranging a panel for simulating a barrier on the test fixture, and adjusting the distance between the panel and the tested mobile phone to a specified distance; connecting the mobile phone with a PC (Personal Computer); after the reception of a calibration instruction transmitted by a PC end through the mobile phone, starting the proximity sensor to induct the panel for simulating the barrier, and inducting to read out a corresponding ADC (Airborne Digital Computer) reading at the moment; and comparing the ADC reading with a preset value, judging whether the ADC reading exceeds the preset value, and if not, storing the ADC reading. According to the invention, the problem of differences between mobile phone sensors is solved, the consistency of threshold values of the mobile phone sensors is ensured, and the calibrating precision of the proximity sensor of the mobile phone is increased. Simultaneously, the test efficiency is improved, and the production cost is reduced.
Description
Technical field
The present invention relates to technical field of mobile terminals, in particular a kind of mobile phone proximity transducer calibration steps and system.
Background technology
Proximity transducer can well be avoided the misoperation of capacitive touch screen, has been widely used on the smart mobile phone of middle and high end at present.The principle that proximity transducer has utilized infrared emission to receive again realizes the induction of target range.Usually after finishing, a mobile phones design needs also this reading to be called threshold value to the pairing ADC reading of distance of reaction of transducer calibration.
Because transducer self exists ± and 10% error, when adding the mobile phone assembling and the error brought of external environment, this threshold value is to be difficult to accomplish unanimity.Make mobile phone proximity transducer calibration accuracy of the prior art poor, testing efficiency is low.Which type of algorithm that don't work in the prior art goes given this threshold value, always has part mobile phone transducer and departs from threshold value.If strengthened the collection sample, not only brought the human cost during researching and developing, a large amount of mobile phone samples also can bring the model machine cost of trial production.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, above-mentioned defective at prior art, a kind of mobile phone proximity transducer calibration steps and system are provided, solved the otherness between the mobile phone transducer, guaranteed the consistency of mobile phone sensor threshold value, and improved mobile phone proximity transducer calibration accuracy, improved testing efficiency simultaneously, reduced production cost.
The technical scheme that technical solution problem of the present invention is adopted is as follows:
A kind of calibration steps of mobile phone proximity transducer wherein, comprises step:
A, will be fixed on the test fixture, and the panel of an analog obstacle thing is set on this test fixture, and the distance of regulating between this panel and the tested mobile phone is a distance to a declared goal with the mobile phone of proximity transducer;
B, mobile phone and PC are coupled together;
C, PC send the proximity transducer calibration command by serial communication to mobile phone;
D, mobile phone start proximity transducer the panel of analog obstacle thing is responded to, and corresponding ADC reading this moment are read in induction after receiving the calibration command that the PC end sends;
E, this an ADC reading and a predetermined value are compared, judge whether this ADC reading exceeds this predetermined value, when not, this ADC reading storage.
The calibration steps of described mobile phone proximity transducer, wherein, described PC sends the pstest calibration command to mobile phone by serial communication software.
The calibration steps of described mobile phone proximity transducer, wherein, described mobile phone receives this pstest calibration command, and control starts the proximity transducer of mobile phone, and the panel of analog obstacle thing is responded to, and obtains the reading of an ADC after the induction.
The calibration steps of described mobile phone proximity transducer, wherein, described step e also comprises: when judging that this ADC reading exceeds this predetermined value, readjust the distance between this target obstacle and the tested mobile phone, and return step C.
The calibration steps of described mobile phone proximity transducer, wherein, described step e also comprises: this ADC reading is stored in the nonvolatile storage of mobile phone, calls for the proximity transducer driver.
The calibration steps of described mobile phone proximity transducer, wherein, described step e also comprises: this ADC reading is kept in the journal file.
A kind of calibration system of mobile phone proximity transducer, wherein, comprise: the mobile phone of PC, band proximity transducer, be used for fixing the test fixture of this mobile phone, the panel of an analog obstacle thing that on this test fixture, is provided with, and an adjusting device that is used to regulate distance between this panel and the tested mobile phone;
Described PC is connected with mobile phone, is used for sending the proximity transducer calibration command by serial communication to mobile phone;
Described mobile phone comprises:
Receive and control module, be used to receive the calibration command that the PC end sends after, starts proximity transducer the panel of analog obstacle thing is responded to, and corresponding ADC reading this moment is read in induction;
Relatively judge module is used for this an ADC reading and a predetermined value are compared, and judges whether this ADC reading exceeds this predetermined value;
Memory module is used for when judging that this ADC reading does not exceed this predetermined value this ADC reading being stored.
The calibration system of described mobile phone proximity transducer, wherein, described PC sends the pstest calibration command to mobile phone by serial communication software.
The calibration system of described mobile phone proximity transducer, wherein, described mobile phone also comprises:
Reset and save module, be used for when judging that this ADC reading exceeds this predetermined value, readjusting the distance between this target obstacle and the tested mobile phone.
The calibration system of described mobile phone proximity transducer, wherein, described memory module comprises:
First memory cell is used for this ADC reading is stored in the nonvolatile storage of mobile phone, calls for the proximity transducer driver;
Second memory cell is used for this ADC reading is kept at journal file.
Mobile phone proximity transducer calibration steps provided by the present invention and system, owing to adopted and in daily factory testing calibration procedure, added a target obstacle, and given target range (, also can come the value of given this distance) according to concrete requirement as 5cm.Mobile phone and PC are coupled together, utilize serial communication, send test instruction to mobile phone.Mobile phone starts proximity transducer, and reads corresponding ADC reading this moment after receiving the test instruction that PC end sends, and this reading is under the 5CM barrier, the numerical value of proximity transducer.After obtaining numerical value, be stored in the nonvolatile storage of mobile phone on the one hand, call for the proximity transducer driver.In addition for daily quality of production monitoring, this threshold value can also be kept in the journal file, solved the otherness between the mobile phone transducer, guaranteed the consistency of mobile phone sensor threshold value, and improved mobile phone proximity transducer calibration accuracy, improve testing efficiency simultaneously, reduced production cost.
Description of drawings
Fig. 1 is the mobile phone proximity transducer calibration system syndeton schematic diagram of the embodiment of the invention.
Fig. 2 is the test fixture backboard open mode structural representation of embodiment of the invention mobile phone proximity transducer calibration system.
Fig. 3 is the test fixture backboard closure state structural representation of embodiment of the invention mobile phone proximity transducer calibration system.
Fig. 4 is the mobile phone proximity transducer calibration steps flow chart of the embodiment of the invention.
Fig. 5 is the cell-phone function theory diagram of the embodiment of the invention.
Embodiment
A kind of mobile phone proximity transducer calibration steps provided by the present invention and system, clearer, clear and definite for making purpose of the present invention, technical scheme and advantage, below develop simultaneously with reference to accompanying drawing that the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The calibration system of a kind of mobile phone proximity transducer that the embodiment of the invention provides, be mainly used in the detection calibration that carries out the mobile phone proximity transducer in the daily production of mobile phone, as shown in Figure 1, the calibration system of the mobile phone proximity transducer of present embodiment comprises: the mobile phone 200 of PC 100, band proximity transducer, be used for fixing the test fixture 300 of this mobile phone.This test clip 300 is provided with the panel 310 of an analog obstacle thing, and is provided with an adjusting device 320 that is used to regulate distance between this panel 310 and the tested mobile phone 200.
Wherein, proximity transducer is to replace contact detection mode such as limit switch, is the general name of purpose transducer need not that the contact detection object detects.The mobile message of energy detected object is an electric signal with there being information translation.In being changed to the detection mode of electric signal, comprise the vortex flow that produces in the metallic object that utilizes the detected object that electromagnetic induction causes mode, catch the mode of surveying body near mode, sharp stone and the guide switch of the volume change of the electric signal that causes.
To the mobile phone proximity transducer carry out calibration testing the time, with described mobile phone 200 and PC(computer) 100 be connected, described PC100 is used for sending the proximity transducer calibration command for mobile phone 200 by serial communication.Wherein, described PC sends the pstest calibration command to mobile phone by serial communication software.
The calibration system of the mobile phone proximity transducer of the invention described above embodiment can be put into breadboard threshold testing in the daily production of factory and go.The panel 310 that in daily factory testing calibration procedure, adds an analog obstacle thing, and given target range (, also can come the value of given this distance) according to concrete requirement as 5cm.Mobile phone 200 is coupled together with PC100, utilize serial communication, send test instruction to mobile phone.Mobile phone starts proximity transducer, and reads corresponding ADC(threshold value this moment after receiving the test instruction that PC end sends) reading, this reading is under the 5CM barrier, the numerical value of proximity transducer.After obtaining numerical value, be stored in the nonvolatile storage of mobile phone on the one hand, call for the proximity transducer driver.For daily quality of production monitoring, this threshold value can also be kept in the journal file in addition.Specific as follows:
As shown in Figure 4, the calibration steps of a kind of mobile phone proximity transducer that the embodiment of the invention provides may further comprise the steps:
Step S410, referring to Fig. 1, the mobile phone 200 of band proximity transducer is fixed on the test fixture 300, and the panel 310 of an analog obstacle thing is set on this test fixture 300, and the distance of regulating between this panel 310 and the tested mobile phone 200 is a distance to a declared goal, as 5cm.
Referring to Fig. 2, test fixture 300 is provided with mobile phone rest area 301, and this mobile phone rest area can be communicated by letter for the mobile phone power supply and with PC.The panel 310 of analog obstacle thing is height adjustable panel, here as the analog obstacle thing.PC 100 ends are equipped with serial communication program, so that communicate with mobile phone, send calibration command and accept calibration data.
Step S420, mobile phone 200 is coupled together with PC 100.As shown in Figure 1, behind the mobile phone power-on, utilize data wire to be connected, connect the transmission that the back serial communication program can instruct to mobile phone and the reception of data and enter step S430 with PC.
Step S430, PC 100 send the proximity transducer calibration command for mobile phone 200 by serial communication; Wherein, described PC sends the pstest calibration command to mobile phone 200 by serial communication software.
In this step, should be noted that the foreign matter of cleaning sensing top, because foreign matter also can reflect the Infrared of sensor emission to transducer, the distance perspective that makes the mistake should.Then, after the closed back plate 302, on the serial communication software of PC end, send " pstest " calibration command and give mobile phone 200, this instruction is the instruction that starts proximity transducer, and enters step S440.
Step S440, mobile phone start proximity transducer the panel of analog obstacle thing is responded to, and corresponding ADC reading this moment are read in induction after receiving the calibration command that the PC end sends;
In the present embodiment, connect above-mentioned shown in, after mobile phone received this pstest calibration command, control started the proximity transducer of mobile phone, and the panel of analog obstacle thing is responded to, and obtains the reading of an ADC after the induction.This reading is under the 5cm situation, the threshold value of sensor-triggered.
Step S450, this an ADC reading and a predetermined value are compared, judge whether this ADC reading exceeds this predetermined value, when not, enter step S451; When being, enter step S452.
Step S451, with the storage of this ADC reading.For example, this ADC reading can be stored in the nonvolatile storage of mobile phone, call for the proximity transducer driver.Also this ADC reading can be kept in the journal file.After promptly obtaining the ADC reading, on the one hand this ADC reading is stored in the nonvolatile storage of mobile phone, calls for the proximity transducer driver.For daily quality of production monitoring, this threshold value can also be kept in the journal file in addition.
Step S452, when judging that this ADC reading exceeds this predetermined value, readjust the distance between this target obstacle and the tested mobile phone, and whether detect above the transducer whether foreign matter is arranged, return step S430.
Therefore the embodiment of the invention has solved the otherness between the mobile phone transducer, has guaranteed the consistency of mobile phone sensor threshold value, and has improved mobile phone proximity transducer calibration accuracy, has improved testing efficiency simultaneously, has reduced production cost.
Wherein, as shown in Figure 5, described mobile phone 200 comprises:
Receive and control module 210, be used to receive the calibration command that the PC end sends after, starts proximity transducer the panel of analog obstacle thing is responded to, and corresponding ADC reading this moment is read in induction; Specifically as mentioned above.
Relatively judge module 220 is used for this an ADC reading and a predetermined value are compared, and judges whether this ADC reading exceeds this predetermined value; Specifically as mentioned above.
Reset and save module 240, be used for when judging that this ADC reading exceeds this predetermined value, readjusting the distance between this target obstacle and the tested mobile phone, specifically as mentioned above.
Wherein, described memory module 230 comprises:
First memory cell is used for this ADC reading is stored in the nonvolatile storage of mobile phone, calls for the proximity transducer driver, specifically as mentioned above.
Second memory cell is used for this ADC reading is kept at journal file, specifically as mentioned above.
In sum, mobile phone proximity transducer calibration steps provided by the present invention and system, in daily factory testing calibration procedure, add a target obstacle owing to adopted, and given target range (as 5cm, also can come the value of given this distance according to concrete requirement).Mobile phone and PC are coupled together, utilize serial communication, send test instruction to mobile phone.Mobile phone starts proximity transducer, and reads corresponding ADC reading this moment after receiving the test instruction that PC end sends, and this reading is under the 5CM barrier, the numerical value of proximity transducer.After obtaining numerical value, be stored in the nonvolatile storage of mobile phone on the one hand, call for the proximity transducer driver.In addition for daily quality of production monitoring, this threshold value can also be kept in the journal file, solve the otherness between the mobile phone transducer, guarantee the consistency of mobile phone sensor threshold value, and improved mobile phone proximity transducer calibration accuracy, improved testing efficiency simultaneously.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion that all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (10)
1. the calibration steps of a mobile phone proximity transducer is characterized in that, comprises step:
A, will be fixed on the test fixture, and the panel of an analog obstacle thing is set on this test fixture, and the distance of regulating between this panel and the tested mobile phone is a distance to a declared goal with the mobile phone of proximity transducer;
B, mobile phone and PC are coupled together;
C, PC send the proximity transducer calibration command by serial communication to mobile phone;
D, mobile phone start proximity transducer the panel of analog obstacle thing is responded to, and corresponding ADC reading this moment are read in induction after receiving the calibration command that the PC end sends;
E, this an ADC reading and a predetermined value are compared, judge whether this ADC reading exceeds this predetermined value, when not, this ADC reading storage.
2. according to the calibration steps of the described mobile phone proximity transducer of claim 1, it is characterized in that described step C is specially: PC sends the pstest calibration command to mobile phone by serial communication software.
3. according to the calibration steps of the described mobile phone proximity transducer of claim 2, it is characterized in that described step D is specially: mobile phone receives this pstest calibration command, and control starts the proximity transducer of mobile phone, panel to the analog obstacle thing is responded to, and obtains the reading of an ADC after the induction.
4. according to the calibration steps of the described mobile phone proximity transducer of claim 1, it is characterized in that described step e also comprises: when judging that this ADC reading exceeds this predetermined value, readjust the distance between this target obstacle and the tested mobile phone, and return step C.
5. according to the calibration steps of the described mobile phone proximity transducer of claim 1, it is characterized in that described step e also comprises: this ADC reading is stored in the nonvolatile storage of mobile phone, calls for the proximity transducer driver.
6. according to the calibration steps of the described mobile phone proximity transducer of claim 1, it is characterized in that described step e also comprises: this ADC reading is kept in the journal file.
7. the calibration system of a mobile phone proximity transducer, it is characterized in that, comprise: the mobile phone of PC, band proximity transducer, be used for fixing the test fixture of this mobile phone, the panel of an analog obstacle thing that on this test fixture, is provided with, and an adjusting device that is used to regulate distance between this panel and the tested mobile phone;
Described PC is connected with mobile phone, is used for sending the proximity transducer calibration command by serial communication to mobile phone;
Described mobile phone comprises:
Receive and control module, be used to receive the calibration command that the PC end sends after, starts proximity transducer the panel of analog obstacle thing is responded to, and corresponding ADC reading this moment is read in induction;
Relatively judge module is used for this an ADC reading and a predetermined value are compared, and judges whether this ADC reading exceeds this predetermined value;
Memory module is used for when judging that this ADC reading does not exceed this predetermined value this ADC reading being stored.
8. according to the calibration system of the described mobile phone proximity transducer of claim 7, it is characterized in that described PC sends the pstest calibration command to mobile phone by serial communication software.
9. according to the calibration system of the described mobile phone proximity transducer of claim 7, it is characterized in that described mobile phone also comprises:
Reset and save module, be used for when judging that this ADC reading exceeds this predetermined value, readjusting the distance between this target obstacle and the tested mobile phone.
10. according to the calibration system of the described mobile phone proximity transducer of claim 7, it is characterized in that described memory module comprises:
First memory cell is used for this ADC reading is stored in the nonvolatile storage of mobile phone, calls for the proximity transducer driver;
Second memory cell is used for this ADC reading is kept at journal file.
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| CN107631750A (en) * | 2017-08-04 | 2018-01-26 | 宇龙计算机通信科技(深圳)有限公司 | For testing the method, apparatus, terminal and storage medium of terminal to be measured |
| CN107917726A (en) * | 2017-11-20 | 2018-04-17 | 上海与德科技有限公司 | The test device and test method of sensor |
| CN107917726B (en) * | 2017-11-20 | 2020-07-24 | 盐城市世波电子有限公司 | Sensor testing device and method |
| CN109061611A (en) * | 2018-09-12 | 2018-12-21 | Oppo广东移动通信有限公司 | Proximity sensor calibration method and relevant apparatus |
| CN109061611B (en) * | 2018-09-12 | 2021-04-13 | Oppo广东移动通信有限公司 | Proximity sensor calibration method and related device |
| CN109451131A (en) * | 2018-12-26 | 2019-03-08 | 上海闻泰电子科技有限公司 | Mobile terminal test device |
| CN111239750A (en) * | 2020-01-03 | 2020-06-05 | 歌尔股份有限公司 | Proximity sensor testing method and proximity sensor testing system |
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