CN102378038A - Method for detecting button malfunction of electronic product - Google Patents
Method for detecting button malfunction of electronic product Download PDFInfo
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- CN102378038A CN102378038A CN2010102514228A CN201010251422A CN102378038A CN 102378038 A CN102378038 A CN 102378038A CN 2010102514228 A CN2010102514228 A CN 2010102514228A CN 201010251422 A CN201010251422 A CN 201010251422A CN 102378038 A CN102378038 A CN 102378038A
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Abstract
The invention is suitable for an electronic product, and provides a method for detecting button malfunction of an electronic product. The method comprises the steps of detecting an output voltage value of a button circuit of the electronic product within a time section for operating a detecting flow of the button malfunction of the electronic product; and judging the button malfunction of the electronic product if the output voltage value is not a voltage value as a button is idle. Due to the technical scheme provided by the invention, the situation of the button malfunction can be effectively detected; besides, the button function is shielded when the button malfunction is detected, so that the obvious fault phenomenon cannot be caused; the user can still use a remote controller to realize the control for the electronic product; and furthermore, the existing hardware of the electronic product cannot be changed and the cost cannot be increased through the scheme provided by the invention.
Description
Technical field
The invention belongs to electronic technology field, relate in particular to the malfunctioning detection method of a kind of electronic product button.
Background technology
Existing television function becomes increasingly complex, and to the operation of television set, the various functions of television set can realize through remote controller basically for the convenience of the user.But existing television set panel usually is provided with button, adds/subtract button and channel adds/subtract button etc. like menu key, volume.
But one of parts that existing television fault rate is the highest promptly are its panel buttons, and normally button is malfunctioning, and the fault performance often is that television set calls menu automatically and shows, adjusts automatically volume or transfer platform automatically.And under the malfunctioning situation of button, the user can't implement effectively control to television set through TV remote controller, makes the user can't normally use television set at all.
The television set key circuit comprises button and divider resistance, and each divider resistance is together in series, and is connected to power end through a pull-up resistor, and the pull-up resistor other end connects the A/D interface pin of MCU (microprocessor) simultaneously.Press as button,, have the A/D interface pin that a voltage is input to MCU, the corresponding output of different keys different voltages with different value according to the electric resistance partial pressure principle.The effect of MCU is that the magnitude of voltage of importing is carried out the A/D conversion, converts binary data into and discerns.Move TV set software simultaneously, in software, carry out different operation to the binary data that obtains.
It is circular flow in software that button among the MCU is handled function, and when button is not triggered (when button is idle), the magnitude of voltage of key circuit output is the magnitude of voltage of button during the free time, generally is 0V.When button is pressed; Different key is according to the difference of its divider resistance; Can produce different voltages with different; Convert magnitude of voltage to binary code through the A/D conversion then and send TV MCU to handle, MCU judges it is that which button is triggered according to the corresponding binary code of magnitude of voltage, the corresponding function incident thereby this button of control television set execution is triggered.
At present the panel button of TV is because the factor on design and the cost, under particular surroundings or service time of a specified duration, can produce electric leakage; There is error in divider resistance resistance in the circuit simultaneously, and when causing button idle, the magnitude of voltage of key circuit output no longer is 0V; And possibly be the be triggered magnitude of voltage of time output of button; Like this, when MCU is not triggered at button, will takes for button and be triggered always; Cause keypress function disorderly, the above-mentioned menu that calls automatically occurs and show, adjust automatically phenomenons such as volume or automatic accent platform.
Except television set, also there is same problem in other electronic products that are provided with panel button.
Therefore, be necessary to provide a kind of technical scheme, to solve the above problems.
Summary of the invention
The object of the present invention is to provide the malfunctioning detection method of a kind of electronic product button, be intended to solve the malfunctioning problem that detects of electronic product button.
The present invention is achieved in that the malfunctioning detection method of a kind of electronic product button, and described method comprises:
A, in the malfunctioning testing process of electronic product button section running time, detect the output voltage values of this electronic product key circuit, if the magnitude of voltage of this output voltage values when not to be button idle judges that then this electronic product button is malfunctioning.
More specifically, wherein the malfunctioning testing process of the said button of step a section running time is that electronic product was started shooting back 3 seconds in.
More specifically, wherein step a specifically comprises:
A1, in the malfunctioning testing process of this button section running time; The output voltage values of this electronic product key circuit of duplicate detection is more than twice or twice; If the output voltage values that once detects is not the magnitude of voltage of button during the free time, judge that then this electronic product button is malfunctioning.
More specifically, wherein the described duplicate detection of step a1 is specially: according to regular time interval cycle detection.
More specifically, said regular time is spaced apart 20ms.
More specifically, wherein also comprise after the step a:
B, judge that this electronic product button is malfunctioning after, shield all buttons of this electronic product, this electronic product does not respond the input signal of its key circuit.
More specifically, wherein step a specifically comprises:
A1, in the malfunctioning testing process of this electronic product button section running time; The output voltage values that this electronic product key circuit of duplicate detection is taken turns in execution one is more than twice or twice; If each output voltage values that detects all is the magnitude of voltage of button during the free time; Judge that then this electronic product button is normal, withdraw from the button testing process in advance; If the output voltage values that once detects is not the magnitude of voltage of button during the free time, change step a2;
A2, repeating step a1 when running time, section expired, judge that this electronic product button is malfunctioning until the malfunctioning testing process of this button.
More specifically, described electronic product is a television set, and said button is the TV set panel button.
The present invention overcomes the deficiency of prior art; Start shooting in the time period of normal operation at electronic product; The output voltage values of its key circuit of cycle detection if the output voltage values of key circuit remains unchanged always, and is not the magnitude of voltage of button during the free time; Show that then button is malfunctioning, then shield all buttons.Technical scheme provided by the invention can effectively detect the malfunctioning situation of button, and detecting the malfunctioning time shielding keypress function of button, can not cause tangible phenomenon of the failure, and the user still can use a teleswitch and realize the control to electronic product; In addition, scheme provided by the invention can not change the existing hardware of electronic product, need not increase cost.
Description of drawings
Fig. 1 is an embodiment of the invention flow chart.
Embodiment
Technical scheme provided by the invention is: start shooting in the time period of normal operation (to call the malfunctioning testing process of button section running time in the following text) at electronic product; The output voltage values of its key circuit of cycle detection; If the output voltage values of key circuit is not the magnitude of voltage of button during the free time; Show that then button is malfunctioning, then shield all buttons.
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and 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.
Be that example describes with the television set in the embodiment of the invention, other are provided with the electronic product of panel button, are disposing under the situation of remote controller, also can adopt method provided by the invention to handle.
Existing television function can realize that the panel button probability of use of television set is very little, based on this through remote controller basically; In the technical scheme provided by the invention, when television set judges that button is malfunctioning, button is directly shielded; Avoid the normal use of the malfunctioning user of influence of button to television set; Processing can be covered the malfunctioning dominance phenomenon of the failure of bringing of button like this, though thoroughly do not deal with problems, can not influence the user normally uses.
Of background technology, when the television set button is malfunctioning, the output voltage values of key circuit will be a fixed voltage value, and not be the magnitude of voltage of button during the free time.Whether malfunctioning judgement is exactly according to this point to button in the embodiment of the invention: when in fact not having button to be triggered, the output voltage values of key circuit can judge then that if not the magnitude of voltage of button during the free time this button is malfunctioning.
Television set possibly need a period of time from the normal operation of starting shooting; The time that present most of television set needs is more than 6 seconds; Respond faster that television set also needs the 5-6 time of second, in this time period, because normally operation of television set; Normally do not show as yet that like image the user can not operate television set through button.In the embodiment of the invention; With time period of television boot-strap to normal operation as the malfunctioning testing process of button section running time, television set will be carried out the malfunctioning testing process of button, and judge whether that according to testing result button is malfunctioning; If the malfunctioning situation of button is arranged, then shields all buttons.In the embodiment of the invention; The time set of television set being carried out the malfunctioning testing process of button is 3 seconds (in the start 3 seconds afterwards); This time value can be adjusted according to actual conditions; As long as be no more than television set from starting shooting the needed time of normal operation, can judge whether malfunctioning getting final product of button simultaneously again.
Behind the television boot-strap, carrying out the initialization of variable, mainly is initialization time variable and malfunctioning flag bit, and malfunctioning flag bit is changed to 1 when initialization, and it is malfunctioning promptly giving tacit consent to button.Time variable is used for calculating the available machine time, and its initial value is zero.
The malfunctioning testing process of button brings into operation then, and television set is carried out button and detected, and detects the magnitude of voltage of key circuit output; Judge whether output voltage values is the output voltage values of button during the free time, like 0V, if; Show that then button is normal, if not, show that then button is malfunctioning.
For preventing the shake interference, can carry out repeated detection to the output voltage values of key circuit, carry out one-touch malfunctioning detection at a distance from regular time such as 20MS as every; Repeat 10 times and take turns testing process as one; If the magnitude of voltage of continuous 10 key circuits output all is the output voltage values of button during the free time, can judge that then button is idle in the 200MS, there is not button to be triggered; Button is normal; It is 0 that malfunctioning flag bit is put by system, simultaneously checkout time variable, the malfunctioning testing process of end key in advance; If in the magnitude of voltage of continuous 10 key circuits output, the magnitude of voltage of at least 1 key circuit output is not the output voltage values of button when idle, then thinks the malfunctioning state that button is still given tacit consent to.Then carry out the malfunctioning detection of button of next round 10 times; If the magnitude of voltage of continuous 10 key circuits output all is the output voltage values of button during the free time, can judge that then button is idle in the 200MS, there is not button to be triggered; Button is normal; It is 0 that malfunctioning flag bit is put by system, simultaneously checkout time variable, the malfunctioning testing process of end key in advance; Otherwise continue to carry out again 10 malfunctioning detections of button of next round ..., until the malfunctioning testing process of button section running time at the expiration (promptly in 3 seconds after the start).
After end running time of the malfunctioning testing process of button, handle according to malfunctioning flag bit, as be 1, represent that then button is malfunctioning, then shield all buttons, system does not respond the input signal of key circuit; As be 0, think that then button is normal, be left intact.
Embodiment of the invention flow chart is as shown in Figure 1, specifically comprises the steps:
1, television boot-strap, initialization time variable and malfunctioning flag bit;
2, is the available machine time less than the malfunctioning testing process of button running time? If change step 3, otherwise change step 7;
3, the malfunctioning testing process of operation button detects the magnitude of voltage that key circuit is exported;
Is 4, the magnitude of voltage of key circuit output button magnitude of voltage when idle? If change step 5, otherwise change step 2;
5, is the malfunctioning testing process operation of button discontented 10 times? If change step 2, otherwise change step 6;
6, judge that button is normal, with malfunctioning mark position 0, the malfunctioning testing process of end key, television set normally moves.
7, judge that button is malfunctioning, shield all buttons, system does not respond the input signal of key circuit.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. malfunctioning detection method of electronic product button, described method comprises:
A, in the malfunctioning testing process of electronic product button section running time, detect the output voltage values of this electronic product key circuit, if the magnitude of voltage of this output voltage values when not to be button idle judges that then this electronic product button is malfunctioning.
2. method according to claim 1 is characterized in that, wherein the malfunctioning testing process of the said button of step a section running time is that electronic product was started shooting back 3 seconds in.
3. method according to claim 1 is characterized in that, wherein step a specifically comprises:
A1, in the malfunctioning testing process of this button section running time; The output voltage values of this electronic product key circuit of duplicate detection is more than twice or twice; If the output voltage values that once detects is not the magnitude of voltage of button during the free time, judge that then this electronic product button is malfunctioning.
4. method according to claim 3 is characterized in that, wherein the described duplicate detection of step a1 is specially: according to regular time interval cycle detection.
5. method according to claim 3 is characterized in that said regular time is spaced apart 20ms.
6. method according to claim 1 is characterized in that, wherein also comprises after the step a:
B, judge that this electronic product button is malfunctioning after, shield all buttons of this electronic product, this electronic product does not respond the input signal of its key circuit.
7. method according to claim 1 is characterized in that, wherein step a specifically comprises:
A1, in the malfunctioning testing process of this electronic product button section running time; The output voltage values that this electronic product key circuit of duplicate detection is taken turns in execution one is more than twice or twice; If each output voltage values that detects all is the magnitude of voltage of button during the free time; Judge that then this electronic product button is normal, withdraw from the button testing process in advance; If the output voltage values that once detects is not the magnitude of voltage of button during the free time, change step a2;
A2, repeating step a1 when running time, section expired, judge that this electronic product button is malfunctioning until the malfunctioning testing process of this button.
8. method according to claim 1 is characterized in that, described electronic product is a television set, and said button is the TV set panel button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010251422.8A CN102378038B (en) | 2010-08-11 | 2010-08-11 | Method for detecting button malfunction of electronic product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010251422.8A CN102378038B (en) | 2010-08-11 | 2010-08-11 | Method for detecting button malfunction of electronic product |
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| CN102378038A true CN102378038A (en) | 2012-03-14 |
| CN102378038B CN102378038B (en) | 2014-06-18 |
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| CN201010251422.8A Expired - Fee Related CN102378038B (en) | 2010-08-11 | 2010-08-11 | Method for detecting button malfunction of electronic product |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108122404A (en) * | 2017-10-24 | 2018-06-05 | 珠海格力电器股份有限公司 | A kind of RF transmitter and its fault detection method, device and storage medium |
| CN111679180A (en) * | 2020-06-11 | 2020-09-18 | 迈拓仪表股份有限公司 | Method and device for detecting on-off of magnetic control waterproof button |
| CN112492303A (en) * | 2020-11-27 | 2021-03-12 | 深圳创维－Rgb电子有限公司 | Key response abnormity repairing method, terminal and storage medium |
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| CN1697527A (en) * | 2005-04-07 | 2005-11-16 | 天津通广三星电子有限公司 | Device and method for testing set plate at foreside of TV set |
| CN101149697A (en) * | 2006-09-20 | 2008-03-26 | 英业达股份有限公司 | Key test system and method |
| CN101193223A (en) * | 2006-11-27 | 2008-06-04 | 深圳创维－Rgb电子有限公司 | A TV set and its function control method and system |
-
2010
- 2010-08-11 CN CN201010251422.8A patent/CN102378038B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1697527A (en) * | 2005-04-07 | 2005-11-16 | 天津通广三星电子有限公司 | Device and method for testing set plate at foreside of TV set |
| CN101149697A (en) * | 2006-09-20 | 2008-03-26 | 英业达股份有限公司 | Key test system and method |
| CN101193223A (en) * | 2006-11-27 | 2008-06-04 | 深圳创维－Rgb电子有限公司 | A TV set and its function control method and system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108122404A (en) * | 2017-10-24 | 2018-06-05 | 珠海格力电器股份有限公司 | A kind of RF transmitter and its fault detection method, device and storage medium |
| CN111679180A (en) * | 2020-06-11 | 2020-09-18 | 迈拓仪表股份有限公司 | Method and device for detecting on-off of magnetic control waterproof button |
| CN112492303A (en) * | 2020-11-27 | 2021-03-12 | 深圳创维－Rgb电子有限公司 | Key response abnormity repairing method, terminal and storage medium |
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| CN102378038B (en) | 2014-06-18 |
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