CN104935920A - Method and system for correcting functions of key board - Google Patents
Method and system for correcting functions of key board Download PDFInfo
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- CN104935920A CN104935920A CN201510349435.1A CN201510349435A CN104935920A CN 104935920 A CN104935920 A CN 104935920A CN 201510349435 A CN201510349435 A CN 201510349435A CN 104935920 A CN104935920 A CN 104935920A
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Abstract
The invention relates to a method and a system for correcting the functions of a key board, which sequentially acquire voltage values generated when keys are pressed, and perform analog-to-digital conversion on the generated voltage values to obtain induction values corresponding to the keys; calculating according to the induction value of each key to obtain a threshold value between the keys; and respectively obtaining threshold values between two adjacent keys to divide the threshold values to obtain voltage ranges, and matching and storing the keys and the voltage ranges to which the corresponding induction values belong. And when the key board is abnormal due to the oxidation or aging of the circuit, adjusting the threshold value among the keys according to the actually acquired voltage value. When the voltage range of each key is set, the dynamic variable is used as a threshold value between the two keys, so that each key can still be normally used, the key board does not need to be replaced, and the service life of the key board is prolonged.
Description
Technical field
The present invention relates to button control technology field, particularly relate to the bearing calibration of a kind of keypad function and system.
Background technology
The keypad of current most of TV is mechanical dividing potential drop keypad, different key there will be different magnitudes of voltage after pressing, then by ADC (analog-digital converter, analogue-to-digital converters) gather voltage, software obtains ADC value, judges that what button is pressed by fixing threshold value.
As time goes on, can there is the situations such as aging and oxidation in the electronic device on keypad, the magnitude of voltage that each button is corresponding can change, and the situation finally causing the keypress function of keypad to have entanglement or inefficacy occurs.After dysfunction appears in mechanical key, traditional processing mode directly changes keypad, makes the useful life of keypad short.
Summary of the invention
Based on this, be necessary for the problems referred to above, a kind of bearing calibration of keypad function and the system that extend the useful life of keypad are provided.
The bearing calibration of a kind of keypad function, comprises the following steps:
Obtain the magnitude of voltage generated when each button is pressed successively, and analog-to-digital conversion is carried out to the magnitude of voltage generated, obtain the influence value that each button is corresponding;
Threshold value between button is calculated according to the influence value of each button;
Obtain threshold value between adjacent two buttons respectively to carry out division and obtain voltage range, and button is carried out coupling with the voltage range belonging to corresponding influence value preserve.
A kind of keypad function corrective system, comprising:
Collect conversion module, for obtaining the magnitude of voltage generated when each button is pressed successively, and carrying out analog-to-digital conversion to the magnitude of voltage generated, obtaining the influence value that each button is corresponding;
Computing module, for calculating threshold value between button according to the influence value of each button;
Correction module, carries out division obtain voltage range for obtaining threshold value between adjacent two buttons respectively, and button is carried out coupling with the voltage range belonging to corresponding influence value preserves.
The bearing calibration of above-mentioned keypad function and system, obtain the magnitude of voltage generated when each button is pressed successively, and carry out analog-to-digital conversion to the magnitude of voltage generated, and obtains the influence value that each button is corresponding.Threshold value between button is calculated according to the influence value of each button; Obtain threshold value between adjacent two buttons respectively to carry out division and obtain voltage range, and button is carried out coupling with the voltage range belonging to corresponding influence value preserve.When keypad because when circuit oxidation or aging reason occur abnormal, according to actual acquisition to magnitude of voltage threshold value between button is adjusted.Using when setting the voltage range of each button dynamic variable as the threshold value between two buttons, to guarantee that each button still can normally use, without the need to changing keypad, extending the useful life of keypad.
Accompanying drawing explanation
Fig. 1 is the flow chart of keypad function bearing calibration in an embodiment;
Fig. 2 is the flow chart of keypad function bearing calibration in another embodiment;
Fig. 3 is the structure chart of keypad function corrective system in an embodiment;
Fig. 4 is the structure chart of keypad function corrective system in another embodiment.
Embodiment
The bearing calibration of a kind of keypad function, keypad can be specifically the keypad on the equipment such as television set, computer or refrigerator, for facility is understood, all explains with the keypad on television set below.As shown in Figure 1, the bearing calibration of keypad function comprises the following steps:
Step S130: obtain the magnitude of voltage generated when each button is pressed successively, and analog-to-digital conversion is carried out to the magnitude of voltage generated, obtain the influence value that each button is corresponding.
Due to the reason such as aging of keypad, keypad can be made to have certain life span, cause button entanglement or cannot use.User run into button board of television extremely cannot normally service condition time, button is pressed, specifically by sample circuit, magnitude of voltage is sampled, obtain when each button is pressed produce magnitude of voltage.Analog to digital converter specifically can be utilized to carry out analog-to-digital conversion to each magnitude of voltage, obtain the influence value that each button is corresponding.
Step S140: calculate threshold value between button according to the influence value of each button.Wherein in an embodiment, step S140 comprises step 142 and step 144.
Step 142: obtain the influence value of each button in preset time period respectively stored in the array of correspondence, and calculate the induction mean value of each button according to the data in array.Preset time period specifically can adjust according to actual conditions.In the present embodiment, step 142 is specially and utilizes moving average algorithm to calculate induction mean value, specifically comprises step 1 and step 2.
Step 1: in chronological order respectively by the array of the influence value of button each in preset time period stored in correspondence, when in array, the quantity of influence value is greater than predetermined threshold value, removing access time influence value at most, to guarantee in array that the data of influence value remain predetermined threshold value constant.
Step 2: the induction mean value calculating each button according to the data in array.
Predetermined threshold value can adjust according to actual conditions, suppose that carrying out to same button the influence value that data acquisition obtains is stored in array Key_ADC_Save [i] [j], influence value is each time preserved, when a button adds up to reach predetermined number, a up-to-date value is added, the oldest value is cast out, keep the data count in array Key_ADC_Save [i] [j] constant, the statistical average then in calculating K ey_ADC_Save [i] [j] obtains the induction mean value Key_Value [i] of each button.
The current sense of reality of being tried to achieve corresponding to this button by the mass data in preset time period answers mean value, guarantees that data calculate accuracy, improves the accuracy that keypad function corrects.Be appreciated that in other embodiments, step 142 also can be only adopt the partial data in array to calculate induction mean value.
Step 144: according to threshold value between the induction mean value calculation button of each button.
According to threshold value between the button that the induction mean value of each button can calculate between two buttons.If threshold value is Key_Threshold [i] between the button between every two buttons, then the scope of each button is Key_Threshold [i+1] to Key_Threshold [i].In the present embodiment, step 144 specifically comprises:
Threshold value between button is calculated according to Key_Threshold [i]=(Key_Value [i+1]-Key_Value [i]) * r+Key_Value [i].Wherein, Key_Threshold [i] is threshold value between button, and Key_Value [i+1] and Key_Value [i] represents the induction mean value of two buttons respectively, and r is default threshold coefficient, can adjust according to actual conditions, in the present embodiment, r gets 0.7.
Be appreciated that in other embodiments, step S140 directly calculates threshold value between button according to the current influence value collected of each button.
Step S150: obtain threshold value between adjacent two buttons respectively and carry out division and obtain voltage range, and button is carried out coupling with the voltage range belonging to corresponding influence value preserve.
Comprise " power key ", " Menu key ", " volume adds ", " volume down ", " channel adds ", " channel down " and " passage key " for button equally, then the voltage range obtaining each button is as follows:
Power key: 0 ~ Key_Threshould [0]
Menu key: Key_Threshould [0] ~ Key_Threshould [1]
.......
Passage key: Key_Threshould [5] ~ Key_Threshould [6]
So far the voltage range just obtained after the renewal of each button is preserved, and keypress function can recover normal, and namely the function of Menu key presses out menu.
The fixed threshold that the keypad of traditional television set uses in software identification knows method for distinguishing.It is power key that such as software is identified as 0V-0.5V, and this voltage range is fixing, if circuit or intact time, it may be 0.3V that power key presses down, and within the scope of this, power key is normal.If but some device in circuit is oxidized, now this power key presses down is 0.6V, then, not within the scope of this, now keypress function confusion will occur.
The bearing calibration of above-mentioned keypad function, when keypad because when circuit oxidation or aging reason occur abnormal, according to actual acquisition to magnitude of voltage threshold value between button is adjusted.Using when setting the voltage range of each button dynamic variable as the threshold value between two buttons, to guarantee that each button still can normally use, without the need to changing keypad, extending the useful life of keypad.By user operation, again obtain the voltage threshold that each button is corresponding, thus entanglement and invalid keypress function are saved again.As time goes on, the threshold value of keypad button can change dynamically, extends the service life of keypad when not being perceived by the user.
Wherein in an embodiment, as shown in Figure 2, before step S130, the bearing calibration of keypad function also can comprise step S120.
Step S120: after receiving button exceptional instructions, output key plate correction prompt information.
User can select input key exceptional instructions in TV (television, television set) menu, enters keypad calibration function.The keypad correction prompt information exported can according to specifically arranging by key class, wherein in an embodiment, keypad correction prompt information comprises at least one in power key control information, Menu key control information, volume correction information, channel control information and passage key control information.Comprise above-mentioned information for keypad correction prompt information simultaneously, can be specifically occur that following button presses information successively at UI (UserInterface, the user interface) interface of television set: " please power key be press ", " please Menu key be press ", " volume please be press add ", " please volume down be press ", " channel please be press add ", " please channel down be press " and " lower channel key please be press ".Whenever detecting that corresponding button is pressed, then export the information of next button, until prompting user performs the push of all buttons.
Present invention also offers a kind of keypad function corrective system, to explain with the keypad on television set equally below.As shown in Figure 3, keypad function corrective system comprises Collect conversion module 130, computing module 140 and correction module 150.
Collect conversion module 130 for obtaining the magnitude of voltage generated when each button is pressed successively, and carries out analog-to-digital conversion to the magnitude of voltage generated, and obtains the influence value that each button is corresponding.
Due to the reason such as aging of keypad, keypad can be made to have certain life span, cause button entanglement or cannot use.User run into button board of television extremely cannot normally service condition time, button is pressed, specifically by sample circuit, magnitude of voltage is sampled, obtain when each button is pressed produce magnitude of voltage.Analog to digital converter specifically can be utilized to carry out analog-to-digital conversion to each magnitude of voltage, obtain the influence value that each button is corresponding.
Computing module 140 is for calculating threshold value between button according to the influence value of each button.Wherein in an embodiment, computing module 140 comprises the first computing unit and the second computing unit.
First computing unit for obtaining the influence value of each button in preset time period respectively stored in the array of correspondence, and calculates the induction mean value of each button according to the data in array.Preset time period can adjust according to actual conditions.In the present embodiment, first computing unit is specially and utilizes moving average algorithm to calculate induction mean value, be specially in chronological order respectively by the array of the influence value of button each in preset time period stored in correspondence, when in array, the quantity of influence value is greater than predetermined threshold value, removing access time influence value at most, to guarantee in array that the data of influence value remain predetermined threshold value constant; The induction mean value of each button is calculated according to the data in array.
Predetermined threshold value can adjust according to actual conditions, suppose that carrying out to same button the influence value that data acquisition obtains is stored in array Key_ADC_Save [i] [j], influence value is each time preserved, when a button adds up to reach predetermined number, a up-to-date value is added, the oldest value is cast out, keep the data count in array Key_ADC_Save [i] [j] constant, the statistical average then in calculating K ey_ADC_Save [i] [j] obtains the induction mean value Key_Value [i] of each button.
The current sense of reality of being tried to achieve corresponding to this button by the mass data in preset time period answers mean value, guarantees that data calculate accuracy, improves the accuracy that keypad function corrects.Be appreciated that in other embodiments, the first computing unit also can be only adopt the partial data in array to calculate induction mean value.
Second computing unit is used for threshold value between the induction mean value calculation button according to each button.
According to threshold value between the button that the induction mean value of each button can calculate between two buttons.If threshold value is Key_Threshold [i] between the button between every two buttons, then the scope of each button is Key_Threshold [i+1] to Key_Threshold [i].In the present embodiment, the second computing unit, according to threshold value between the induction mean value calculation button of each button, specifically comprises:
Threshold value between button is calculated according to Key_Threshold [i]=(Key_Value [i+1]-Key_Value [i]) * r+Key_Value [i]; Wherein, Key_Threshold [i] is threshold value between button, and Key_Value [i+1] and Key_Value [i] is the induction mean value of the i-th+1 button and i-th button, and r is default threshold coefficient, can adjust according to actual conditions, in the present embodiment, r gets 0.7.
Be appreciated that in other embodiments, computing module 140 also can be directly calculate threshold value between button according to the current influence value collected of each button.
Correction module 150 carries out division obtain voltage range for obtaining threshold value between adjacent two buttons respectively, and button is carried out coupling with the voltage range belonging to corresponding influence value preserves.
So far the voltage range just obtained after the renewal of each button is preserved, and keypress function can recover normal, and namely the function of Menu key presses out menu.
The fixed threshold that the keypad of traditional television set uses in software identification knows method for distinguishing.It is power key that such as software is identified as 0V-0.5V, and this voltage range is fixing, if circuit or intact time, it may be 0.3V that power key presses down, and within the scope of this, power key is normal.If but some device in circuit is oxidized, now this power key presses down is 0.6V, then, not within the scope of this, now keypress function confusion will occur.
Above-mentioned keypad function corrective system, when keypad because when circuit oxidation or aging reason occur abnormal, according to actual acquisition to magnitude of voltage threshold value between button is adjusted.Using when setting the voltage range of each button dynamic variable as the threshold value between two buttons, to guarantee that each button still can normally use, without the need to changing keypad, extending the useful life of keypad.By user operation, again obtain the voltage threshold that each button is corresponding, thus entanglement and invalid keypress function are saved again.As time goes on, the threshold value of keypad button can change dynamically, extends the service life of keypad when not being perceived by the user.
Wherein in an embodiment, as shown in Figure 4, keypad function corrective system also can comprise output module 120, output module 120 is for obtaining the magnitude of voltage generated when each button is pressed successively in Collect conversion module 130, and analog-to-digital conversion is carried out to the magnitude of voltage generated, before obtaining influence value corresponding to each button, after receiving button exceptional instructions, output key plate correction prompt information.
User can select input key exceptional instructions in TV menu, enters keypad calibration function.The keypad correction prompt information exported can according to specifically arranging by key class, wherein in an embodiment, keypad correction prompt information comprises at least one in power key control information, Menu key control information, volume correction information, channel control information and passage key control information.Comprise above-mentioned information for keypad correction prompt information, can be specifically occur that following button presses information successively at the UI interface of television set simultaneously: " please press power key ", " please press Menu key ", " please press volume to add ", " please press volume down ", " please press channel to add ", " please press channel down " and " please press lower channel key ".Whenever detecting that corresponding button is pressed, then export the information of next button, until prompting user performs the push of all buttons.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the bearing calibration of keypad function, is characterized in that, comprises the following steps:
Obtain the magnitude of voltage generated when each button is pressed successively, and analog-to-digital conversion is carried out to the magnitude of voltage generated, obtain the influence value that each button is corresponding;
Threshold value between button is calculated according to the influence value of each button;
Obtain threshold value between adjacent two buttons respectively to carry out division and obtain voltage range, and button is carried out coupling with the voltage range belonging to corresponding influence value preserve.
2. keypad function according to claim 1 bearing calibration, it is characterized in that, the described magnitude of voltage obtaining generation when each button is pressed successively, and analog-to-digital conversion is carried out to the magnitude of voltage generated, before obtaining the step of influence value corresponding to each button, also comprise after receiving button exceptional instructions, the step of output key plate correction prompt information.
3. keypad function according to claim 1 bearing calibration, is characterized in that, the described influence value according to each button calculates the step of threshold value between button, comprises the following steps:
Obtain the influence value of each button in preset time period respectively stored in the array of correspondence, and calculate the induction mean value of each button according to the data in array;
According to threshold value between the induction mean value calculation button of each button.
4. keypad function according to claim 3 bearing calibration, it is characterized in that, in described acquisition preset time period, the influence value of each button is respectively stored in the array of correspondence, and calculates the induction mean value of each button according to the data in array, specifically comprises the following steps:
In chronological order respectively by the array of the influence value of button each in preset time period stored in correspondence, when in array, the quantity of influence value is greater than predetermined threshold value, removing access time influence value at most, to guarantee in array that the data of influence value remain predetermined threshold value constant;
The induction mean value of each button is calculated according to the data in array.
5. keypad function according to claim 3 bearing calibration, is characterized in that, according to the step of threshold value between the induction mean value calculation button of each button, comprises the following steps:
Threshold value between button is calculated according to Key_Threshold [i]=(Key_Value [i+1]-Key_Value [i]) * r+Key_Value [i]; Wherein, Key_Threshold [i] is threshold value between button, and Key_Value [i+1] and Key_Value [i] represents the induction mean value of two buttons respectively, and r is default threshold coefficient.
6. a keypad function corrective system, is characterized in that, comprising:
Collect conversion module, for obtaining the magnitude of voltage generated when each button is pressed successively, and carrying out analog-to-digital conversion to the magnitude of voltage generated, obtaining the influence value that each button is corresponding;
Computing module, for calculating threshold value between button according to the influence value of each button;
Correction module, carries out division obtain voltage range for obtaining threshold value between adjacent two buttons respectively, and button is carried out coupling with the voltage range belonging to corresponding influence value preserves.
7. keypad function corrective system according to claim 6, it is characterized in that, also comprise output module, described output module is used for obtaining in described Collect conversion module the magnitude of voltage generated when each button is pressed successively, and analog-to-digital conversion is carried out to the magnitude of voltage generated, before obtaining influence value corresponding to each button, after receiving button exceptional instructions, output key plate correction prompt information.
8. keypad function corrective system according to claim 6, it is characterized in that, described computing module comprises:
First computing unit, for obtaining the influence value of each button in preset time period respectively stored in the array of correspondence, and calculates the induction mean value of each button according to the data in array;
Second computing unit, for according to threshold value between the induction mean value calculation button of each button.
9. keypad function corrective system according to claim 8, it is characterized in that, described first computing unit obtains the influence value of each button in preset time period respectively stored in the array of correspondence, and the induction mean value of each button is calculated according to the data in array, be specially in chronological order respectively by the array of the influence value of button each in preset time period stored in correspondence, when in array, the quantity of influence value is greater than predetermined threshold value, removing access time influence value at most, to guarantee in array that the data of influence value remain predetermined threshold value constant; The induction mean value of each button is calculated according to the data in array.
10. keypad function corrective system according to claim 8, is characterized in that, described second computing unit, according to threshold value between the induction mean value calculation button of each button, comprising:
Threshold value between button is calculated according to Key_Threshold [i]=(Key_Value [i+1]-Key_Value [i]) * r+Key_Value [i]; Wherein, Key_Threshold [i] is threshold value between button, and Key_Value [i+1] and Key_Value [i] represents the induction mean value of two buttons respectively, and r is default threshold coefficient.
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| CN111693763A (en) * | 2020-05-22 | 2020-09-22 | 科华恒盛股份有限公司 | Detection system for power module in modular electrical equipment |
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