CN111586227A - Method for detecting angle of display screen of folding mobile phone - Google Patents
Method for detecting angle of display screen of folding mobile phone Download PDFInfo
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- CN111586227A CN111586227A CN202010396483.7A CN202010396483A CN111586227A CN 111586227 A CN111586227 A CN 111586227A CN 202010396483 A CN202010396483 A CN 202010396483A CN 111586227 A CN111586227 A CN 111586227A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 70
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000002618 waking effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
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Abstract
The invention discloses a method for detecting the angle of a display screen of a folding mobile phone, which is implemented according to the following steps: step 1, arranging a variable resistor in a fixed end of a rotating shaft connected with a main screen and an auxiliary screen of a mobile phone; step 2, connecting the variable resistor with the flexible circuit board; step 3, calculating an output voltage detection signal of the flexible circuit board through a pull-up resistor on the flexible circuit board, a resistance value change value of the variable resistor and a detection circuit power supply; step 4, calculating the real-time resistance value of the variable resistor through the detection signal, the pull-up resistor and the detection circuit power supply; and step 5, judging the opening and closing angle of the main screen and the auxiliary screen of the mobile phone through the detection signal and the real-time resistance value of the variable resistor, and awakening the processor by the flexible circuit board when the opening and closing angle of the main screen and the auxiliary screen of the mobile phone is not less than 150 degrees, so that the mobile phone is awakened, and the problems of insufficient detection precision and low reliability of the opening and closing angle of the main screen and the auxiliary screen of the mobile phone in the prior art are solved.
Description
Technical Field
The invention belongs to the technical field of mobile intelligent terminals, and relates to a method for detecting an angle of a display screen of a folding mobile phone.
Background
With the popularization of mobile communication technology, the form of the intelligent terminal is developing towards diversification, and the double-screen mobile phone gradually becomes a hot-selling product. This handset has two display screens: the main screen and the auxiliary screen are connected through a rotating shaft. The main screen and the auxiliary screen are different in opening and closing angle, and the mobile phone works in different display modes. Therefore, the accurate detection of the opening and closing angle of the main screen and the auxiliary screen of the double-screen mobile phone becomes a key technology. Because the rotating shaft structure of the double-screen mobile phone is very small, the opening and closing angles of the main screen and the auxiliary screen are reliably and accurately detected with higher difficulty.
The method for detecting the opening and closing angle of the main screen and the auxiliary screen of the current mobile phone is mainly realized by combining a magnet with a Hall device, the magnet is arranged on a rotating shaft connected with the main screen and the auxiliary screen, the Hall device is arranged on a main board of the mobile phone and close to the position of the magnet, the rotating shaft rotates to drive the magnet to rotate, the Hall device senses the change of magnetic induction intensity, and the opening and closing angle is judged through the magnetic induction intensity value.
The prior art has two disadvantages: 1. the opening and closing angles of the main screen and the auxiliary screen of the mobile phone are not in a complete linear relation with the magnetic induction intensity sensed by the Hall devices, and the consistency of the magnetic field performance of the individual magnets is different, so that the range of the magnetic induction intensity detected by the Hall devices of different mobile phones is large, and the angle detection is inaccurate. 2. The magnet can appear magnetism and weaken (or demagnetization) along with the rising of surrounding operating environment temperature, leads to the cell-phone angle of opening and shutting to judge the mistake, and the mode of operation is unstable, appears the confusion even, seriously influences user experience.
Disclosure of Invention
The invention provides a method for detecting the angle of a display screen of a folding mobile phone, which solves the problems that in the prior art, the opening and closing angle detection is not accurate, and the angle judgment of the display screen of the mobile phone is wrong due to the change of the working temperature of the mobile phone.
The technical scheme adopted by the invention is that the method for detecting the angle of the display screen of the folding mobile phone is implemented according to the following steps:
step 1, arranging a variable resistor in a fixed end of a rotating shaft connected with a main screen and an auxiliary screen of a mobile phone;
and 5, judging the opening and closing angle of the main screen and the auxiliary screen of the mobile phone through the detection signal and the real-time resistance value of the variable resistor, and when the opening and closing angle of the main screen and the auxiliary screen of the mobile phone is not less than 150 degrees, waking up the processor by the flexible circuit board so as to wake up the mobile phone, and if the opening and closing angle of the main screen and the auxiliary screen of the mobile phone is less than 150 degrees, continuously keeping the mobile phone in a dormant state.
The present invention is also characterized in that,
the step 1 is that a rotating shaft fixing end is fixedly connected between the main screen and the auxiliary screen, a variable resistor is arranged in the rotating shaft fixing end, the variable resistor is provided with a fixed end of the variable resistor, the fixed end of the variable resistor is fixed on the fixed end of the rotating shaft, the rotating end of the variable resistor, which is far away from the fixed end of the rotating shaft, is fixedly connected with the rotating end of the rotating shaft, the rotating end of the variable resistor can rotate along with the rotating end of the rotating shaft, the rotating end of the variable resistor is connected with the variable resistor through a rotating shaft, the variable resistor can convert the opening and closing angle of the main screen and the auxiliary screen into a voltage detection signal, the variable resistor can connect the voltage detection signal to the analog-to-digital conversion module and the comparator, the analog-to-digital converter converts the voltage detection signal into digital quantity and transmits the digital quantity to the processor, the processor converts the digital quantity into the opening and closing angle between the current main screen and the auxiliary screen, and the comparator outputs a signal to wake up the mobile phone from a dormant state to be in a working state.
And 5, judging the opening and closing angle of the main screen and the auxiliary screen of the mobile phone through the detection signal and the real-time resistance value of the variable resistor, comparing the voltage detection signal with a threshold voltage through a comparator to generate a terminal interrupt signal when the opening and closing angle of the main screen and the auxiliary screen of the mobile phone is not less than 150 degrees, awakening a processor under the condition that the interrupt signal is used for enabling the mobile phone to be dormant, awakening the processor through the flexible circuit board, and awakening the mobile phone, wherein if the opening and closing angle of the main screen and the auxiliary screen of the mobile phone is less than 150 degrees, the mobile phone continues to be in a dormant state.
the method for detecting the angle of the display screen of the folding mobile phone has the advantages that the method for detecting the angle of the display screen of the folding mobile phone can accurately detect the opening and closing angles of the main screen and the auxiliary screen of the mobile phone, so that the mobile phone can stably work in different display modes. The resistance value of the variable resistor can be changed along with the rotation of the rotating shaft, so that a certain corresponding relation exists between the opening and closing angle between the main screen and the auxiliary screen and the resistance value of the variable resistor in the rotating shaft, the opening and closing angles are different, the resistance values corresponding to the variable resistor are different, the voltage detection signal is converted into a digital quantity by the analog-to-digital converter, and the opening and closing angle of the main screen and the auxiliary screen of the mobile phone is accurately obtained.
Drawings
FIG. 1 is a schematic view of a working flow of a method for detecting an angle of a display screen of a foldable mobile phone according to the present invention;
FIG. 2 is a schematic diagram illustrating the detection of the opening/closing angle between the main screen and the auxiliary screen according to the method for detecting the angle of the display screen of the foldable mobile phone;
FIG. 3 is a schematic structural diagram of a method for detecting an angle of a display screen of a foldable mobile phone according to the present invention;
FIG. 4 is a schematic diagram of a variable resistor structure of a method for detecting an angle of a display screen of a foldable mobile phone according to the present invention;
FIG. 5 is a connection diagram of a variable resistor and a flexible circuit board according to the method for detecting the angle of the display screen of the foldable mobile phone;
fig. 6 is a schematic diagram of an opening and closing angle signal processing circuit of the method for detecting the angle of the display screen of the folding mobile phone according to the present invention.
In the figure, 1, a secondary screen, 2, a main screen, 3, a fixed end of a variable resistor, 4, a rotating end of the variable resistor, 5, a sliding end of a variable resistor controller, 6, the variable resistor, 7, a rotating end of a rotating shaft, 8, a fixed end of the rotating shaft, 9, a flexible circuit board, 10, a connector, 11, a detection circuit power supply, 12, a threshold voltage, 13, a comparator, 14, a terminal signal, 15, a pull-up resistor, 16, a detection voltage, 17, a digital-to-analog converter, 18, a processor and 19 are connected with a reference line GND.
Detailed Description
The following detailed description is to be read with reference to the drawings and the accompanying detailed description.
The invention discloses a method for detecting the angle of a display screen of a folding mobile phone, which is implemented according to the following steps as shown in figure 1:
step 1, a variable resistor 6 is arranged in a rotating shaft fixing end 8 connected with a main screen 2 and an auxiliary screen 1 of a mobile phone;
step 1 is specifically, as shown in fig. 2, a rotating shaft fixing end 8 is fixedly connected between a main screen 2 and a sub-screen 1, a variable resistor 6 is arranged in the rotating shaft fixing end 8, a variable resistor fixing end 4 is arranged on the variable resistor 6, the variable resistor fixing end 4 is fixed on the rotating shaft fixing end 8, a rotating shaft rotating end 7 is fixedly connected at the position, far away from the rotating shaft fixing end 8, of the rotating end 4 of the variable resistor, the rotating end 4 of the variable resistor can rotate along with the rotating shaft rotating end 7, the rotating end 4 of the variable resistor is connected with the variable resistor 6 through a rotating shaft, the variable resistor 6 can convert the opening and closing angle of the main screen 2 and the sub-screen 1 into a voltage detection signal 16, the variable resistor 6 can connect the voltage detection signal 16 to an analog-to-digital conversion module 17 and a comparator 13, the analog-to-digital converter 17 converts the, the processor 18 converts the digital quantity into the opening and closing angle between the current main screen and the auxiliary screen, and the comparator 13 outputs a signal to wake up the mobile phone from the dormant state into the working state.
specifically, as shown in fig. 3, a variable resistor sliding end 5 is provided on the variable resistor 6, the variable resistor sliding end 5, the variable resistor fixing end 4, and the rotating end 7 of the rotating shaft are all connected to a flexible circuit board (9) through pins, and the other end of the flexible circuit board is connected to a connector. Step 3, calculating an output voltage detection signal 16 of the flexible circuit board through a pull-up resistor 15 on the flexible circuit board, a resistance value change value of the variable resistor 6 and a detection circuit power supply (11);
and 5, judging the opening and closing angles of the main screen 2 and the auxiliary screen 1 of the mobile phone through the detection signal 16 and the real-time resistance value of the variable resistor 6, and awakening the processor 18 by the flexible circuit board when the opening and closing angles of the main screen 2 and the auxiliary screen 1 of the mobile phone are not less than 150 degrees so as to awaken the mobile phone, and continuously keeping the mobile phone in a dormant state when the opening and closing angles of the main screen 2 and the auxiliary screen 1 of the mobile phone are less than 150 degrees.
In the angle detection method for the display screen of the folding mobile phone, the flexible circuit board comprises a detection circuit power supply 11, the detection circuit power supply 11 is sequentially connected with a pull-up resistor 15, a detection signal 16, an analog-to-digital converter 17, a processor 18, a threshold voltage 12, a comparator 13 and a terminal signal 14, and the comparator 13 is in signal connection with the detection signal 16.
One end of a pull-up resistor 15 is connected with the detection circuit power supply 11, the other end of the pull-up resistor 15 is connected with the variable resistor 6, a detection signal 16 is output between the pull-up resistor 15 and the variable resistor 6, and one end of the variable resistor 6 is connected with a reference line GND 19.
The detection voltage 16 can be used as an input signal of an analog-digital converter 17 and a comparator 13 respectively, the analog-digital converter 17 outputs a digital signal to a processor 18, the processor 18 converts the digital signal into an angle for controlling the display modes of the main screen 2 and the auxiliary screen 1, and the comparator 13 outputs a signal 14 which is used as an input signal of the processor 18 for awakening the mobile phone from a sleep state and converting the mobile phone into a working state.
A first terminal of the comparator 13 is connected between the voltage dividing resistor 15 and the variable resistor 6, a second terminal of the comparator 13 is connected to the threshold voltage 12, and a third terminal of the comparator 13 is connected to the processor 18.
The principle of the method for detecting the angle of the display screen of the folding mobile phone is that a variable resistor 6 is arranged in a rotating shaft fixing end 8 connected with a main screen 2 and an auxiliary screen 1 of the mobile phone, a variable resistor fixing end 4 is arranged on the rotating shaft fixing end 8, and a rotating end 4 of the variable resistor rotates along with a rotating end 7 of the rotating shaft, so that the resistance value of the variable resistor changes along with the rotation of the rotating shaft.
As shown in fig. 3, the variable resistor controller slider end 5 is connected to the variable resistor rotating end 3, and the slider end 5 is movable to cause a change in resistance between the variable resistor rotating end 3 and the fixed end 4.
As shown in fig. 4, the rotating section 3, the fixed end 4 and the sliding end 5 of the variable resistor 6 are connected to one end of a flexible circuit board 9, and a connector 10 is welded to the other end of the flexible circuit board 9; the flexible circuit board connector 10 is connected to the printed circuit board of the mobile phone as an output signal of the variable resistor.
As shown in fig. 5, the detection circuit power supply 11 on the printed circuit board is connected with the pull-up resistor 15 and the variable resistor 6 to form a voltage division circuit to output a voltage detection signal 16, the opening and closing angle between the main screen and the sub screen is changed, the resistance value of the variable resistor 6 is changed, the voltage detection signal 16 is output, and the voltage detection signal 16 is calculated as shown in formula (1), and is connected to the analog-to-digital converter 17 and the comparator 13. Knowing the voltage detection signal 16, the pull-up resistor 15, and the power supply 11, the value of the variable resistor 6 can be inferred using equation (2).
The threshold voltage 12 may be generated by a voltage divider circuit or a digital-to-analog conversion module, and the voltage detection signal is compared with the threshold voltage 12 by a comparator 13 to generate a terminal signal 14, where the terminal signal 14 is used to wake up the handset processor 18 in case of making the handset sleep.
The resistance change and the opening and closing angle of the variable resistor are linear relations, and the relations among the resistance value of the variable resistor, the voltage detection signal, the opening and closing angle of the main screen and the sub screen are shown in table 1.
TABLE 1 variable resistor resistance and Voltage sense Signal calculation
| Opening and closing angle of main screen and auxiliary screen | Variable resistor resistance (kilo-ohm) | Voltage detecting signal (volt) |
| 0 | 0.000 | 0.000 |
| 10 | 5.556 | 0.095 |
| 20 | 11.111 | 0.180 |
| 30 | 16.667 | 0.257 |
| 40 | 22.222 | 0.327 |
| 50 | 27.776 | 0.391 |
| 60 | 33.333 | 0.450 |
| 70 | 38.889 | 0.504 |
| 80 | 44.444 | 0.554 |
| 90 | 50.000 | 0.600 |
| 100 | 55.556 | 0.643 |
| 110 | 61.111 | 0.683 |
| 120 | 66.667 | 0.720 |
| 130 | 72.222 | 0.755 |
| 140 | 77.778 | 0.788 |
| 150 | 83.333 | 0.818 |
| 160 | 88.889 | 0.847 |
| 170 | 84.444 | 0.874 |
| 180 | 100.00 | 0.900 |
If the mobile phone needs to be awakened when the opening and closing angle of the main screen and the auxiliary screen rotates to 150 degrees during standby of the mobile phone, the threshold voltage is set to 0.818V.
The method for detecting the angle of the display screen of the folding mobile phone can accurately detect the opening and closing angles of the main screen and the auxiliary screen of the mobile phone, so that the mobile phone can stably work in different display modes. The resistance value of the variable resistor changes along with the rotation of the rotating shaft, so that a certain corresponding relation exists between the opening and closing angle between the main screen and the auxiliary screen and the resistance value of the variable resistor in the rotating shaft, the opening and closing angle is different, and the resistance values corresponding to the variable resistor are different. The analog-to-digital converter converts the voltage detection signal into a digital quantity, and then the opening and closing angles of the main screen and the auxiliary screen of the mobile phone are accurately obtained.
Claims (6)
1. A method for detecting the angle of a display screen of a folding mobile phone is characterized by comprising the following steps:
step 1, a variable resistor (6) is arranged in a rotating shaft fixing end (8) connected with a main screen (2) and an auxiliary screen (1) of a mobile phone;
step 2, connecting the variable resistor (6) with the flexible circuit board;
step 3, calculating an output voltage detection signal (16) of the flexible circuit board through a pull-up resistor (15) on the flexible circuit board, a resistance value change value of the variable resistor (6) and a detection circuit power supply (11);
step 4, calculating the real-time resistance value of the variable resistor (6) through the detection signal (16), the pull-up resistor (15) and the detection circuit power supply (11);
and 5, judging the opening and closing angle of the main screen (2) and the auxiliary screen (1) of the mobile phone through the detection signal (16) and the real-time resistance value of the variable resistor (6), and when the opening and closing angle of the main screen (2) and the auxiliary screen (1) of the mobile phone is not less than 150 degrees, awakening the processor (18) through the flexible circuit board so as to awaken the mobile phone, and if the opening and closing angle of the main screen (2) and the auxiliary screen (1) of the mobile phone is less than 150 degrees, keeping the mobile phone in a dormant state continuously.
2. The method for detecting the angle of the display screen of the foldable mobile phone according to claim 1, wherein the step 1 is implemented by fixedly connecting a rotating shaft fixing end (8) between the main screen (2) and the sub screen (1), disposing a variable resistor (6) in the rotating shaft fixing end (8), disposing a variable resistor fixing end (4) on the variable resistor (6), fixing the variable resistor fixing end (4) on the rotating shaft fixing end (8), fixedly connecting a rotating shaft rotating end (7) on the rotating shaft rotating end (4) far away from the rotating shaft fixing end (8), rotating the variable resistor rotating end (4) along with the rotating shaft rotating end (7), connecting the variable resistor (6) to the rotating shaft rotating end (4), converting the opening and closing angle of the main screen (2) and the sub screen (1) into a voltage detection signal (16), the variable resistor (6) can connect the voltage detection signal (16) to an analog-digital conversion module (17) and a comparator (13), the analog-digital converter (17) converts the voltage detection signal (16) into a digital quantity and transmits the digital quantity to a processor (18), the processor (18) converts the digital quantity into an opening and closing angle between the current main screen and the current auxiliary screen, and the comparator (13) outputs a signal to wake up the mobile phone from a sleep state to be in a working state.
3. The method for detecting the angle of the display screen of the folding mobile phone according to claim 2, wherein in the step 5, the opening and closing angle of the main screen (2) and the sub screen (1) of the mobile phone is judged according to the detection signal (16) and the real-time resistance value of the variable resistor (6), when the opening and closing angle of the main screen (2) and the sub screen (1) of the mobile phone is not less than 150 degrees, the voltage detection signal is compared with the threshold voltage (12) through the comparator (13) to generate the terminal interrupt signal (14), the interrupt signal (14) is used for waking up the processor (18) under the condition that the mobile phone is in a dormant state, the flexible circuit board wakes up the processor (18) so as to wake up the mobile phone, and if the opening and closing angle of the main screen (2) and the sub screen (1) of the mobile phone is less than 150 degrees, the mobile phone.
4. The method for detecting the angle of the display screen of the folding mobile phone according to claim 1, wherein in step 2, a variable resistor sliding end (5) is provided on the variable resistor (6), the variable resistor sliding end (5), the fixed end (4) of the variable resistor, and the rotating end (7) of the rotating shaft are all connected to a flexible circuit board (9) through pins, and the other end of the flexible circuit board is connected to a connector.
5. The method for detecting the angle of the display screen of the folding mobile phone according to claim 1, wherein the step 3 is to calculate the output voltage detection signal (16) of the flexible circuit board through the pull-up resistor (15) on the flexible circuit board, the resistance value variation value of the variable resistor (6) and the detection circuit power supply (11), and the calculation formula is as follows:
6. the method for detecting the angle of the display screen of the folding mobile phone according to claim 1, wherein the step 4 is to calculate the real-time resistance value of the variable resistor (6) through the detection signal (16), the pull-up resistor (15) and the detection circuit power supply (11), and the calculation formula is as follows:
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010396483.7A CN111586227A (en) | 2020-05-13 | 2020-05-13 | Method for detecting angle of display screen of folding mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010396483.7A CN111586227A (en) | 2020-05-13 | 2020-05-13 | Method for detecting angle of display screen of folding mobile phone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244941A (en) * | 2022-01-25 | 2022-03-25 | Oppo广东移动通信有限公司 | Electronic device |
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2020
- 2020-05-13 CN CN202010396483.7A patent/CN111586227A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244941A (en) * | 2022-01-25 | 2022-03-25 | Oppo广东移动通信有限公司 | Electronic device |
| CN114244941B (en) * | 2022-01-25 | 2024-04-16 | Oppo广东移动通信有限公司 | Electronic equipment |
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Application publication date: 20200825 |