CN105404029A - Method for predicting service life of liquid crystal panel of monitoring and control device - Google Patents
Method for predicting service life of liquid crystal panel of monitoring and control device Download PDFInfo
- Publication number
- CN105404029A CN105404029A CN201510776143.6A CN201510776143A CN105404029A CN 105404029 A CN105404029 A CN 105404029A CN 201510776143 A CN201510776143 A CN 201510776143A CN 105404029 A CN105404029 A CN 105404029A
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- backlight
- liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A system for predicting the service life of a liquid crystal panel of a monitoring and control device can monitor the work state of the liquid crystal panel by monitoring the accumulated lightening time of backlight in order to predict the service life of the liquid crystal panel. The system includes a backlight control circuit, a memorizer, a processor, and a communication management panel. In practical application of the liquid crystal panel of the monitoring and control device, a power supply of liquid crystal backlight is controllable; a base pin of the processor can control power-on and power-off of an MOS transistor to achieve light-on and light-off of the liquid crystal screen. During determination of the service life of the liquid crystal screen, when the MOS transistor is powered on, software enables a timer to calculate the power-on time of the MOS transistor and accumulates the power-on time (in seconds), and then the accumulated result is stored in the memorizer E2PROM; the accumulated time is the total work time of the liquid crystal screen and can be read by the system at any time to monitor the work state of the liquid crystal screen; and when the work time approaches a service life threshold of the liquid crystal screen, the communication management panel can give a tip for replacement, and can give an alarm through an indication lamp.
Description
Technical field
The present invention relates to liquid crystal panel life-span prediction method, relate in particular to a kind of measure and control device liquid crystal panel life-span prediction method, be applicable to need in power system transformer substation robotization to predict Survey control and the automation equipment in liquid crystal panel serviceable life.
Background technology
No matter be mobile phone and PDA, or notebook computer, display and TV, almost in all application, LCD all replaces traditional display technologies rapidly, no exception in measure and control device.LCD itself is not luminous, but uses the light that LCD light source behind exports.When backlight device produces fault, the LCD be associated can be caused unavailable.In this case, measure and control device front panel must be disassembled, remove the LCD broken down, and available LCD is arranged on appropriate location, this can need a large amount of work and time.
The serviceable life of liquid crystal display is longer than backlight device a lot, therefore the leading indicator weighing liquid crystal display serviceable life is exactly luminance index, after reaching life time, the brightness of liquid crystal display probably can drop to the half of original standard, and the backlight illumination of therefore monitoring liquid crystal can well reflect the duty of liquid crystal display.
Current, have and use light sensor to detect the self test mode of liquid crystal backlight lighteness, but which adds cost and complexity to a certain extent.In fact, the backlight lightening cumulative time of monitoring liquid crystal also can well reflect the duty of liquid crystal display from the side, both the liquid crystal display to reaching lifetime limitation can having been reminded in time to change, having prevented the normal work of liquid crystal catastrophic failure to measure and control device from having an impact; Also the non-essential loss that the replacing be in life cycle is brought can be avoided.Therefore, the method to ensure measure and control device liquid crystal panel normal work and cost-savingly to play a positive role.
Summary of the invention
The object of the invention is to provide a kind of system predicting the measure and control device liquid crystal panel life-span, can providing warning information close to during threshold value in serviceable life.
The invention provides following solution: a kind of system predicting the measure and control device liquid crystal panel life-span, comprise backlight control circuit, storer, processor and telecommunication management plate, monitor liquid crystal panel duty by monitoring accumulative backlight lightening duration, backlight control circuit is used to control lighting and extinguishing of backlight; Storer is used to store accumulative backlight lightening duration information; Processor is used to the accumulative backlight lightening duration information be received in described in acquisition per hour, this information and lifetime threshold is compared, and provides the alarm signal of result based on the comparison; Telecommunication management plate is for providing text message and the stand by lamp information of warning information.
Described backlight control circuit is LCD backlight control circuit, lights or extinguish operation to backlight, and this is lighted or extinguishing operation is realized with cut-off by the conducting of the I/0 pin control metal-oxide-semiconductor of CPU; When processor lights backlight order to LCD backlight control circuit transmission, this LCD backlight control circuit provides power supply to backlight, is lighted, and to the feedback information that processor transmission backlight has been lighted; After processor receives this information, the accumulative backlight lightening time is added up, every 1 hour, this time is stored in storer; According to this accumulative backlight point lighting time, whether prediction backlight is reached threshold value serviceable life by processor, and afterwards, processor will send a backlight information signal to telecommunication management plate; Then, described telecommunication management plate will provide backlight warning information to user, be about to reach tenure of use for warning user's backlight.
Telecommunication management plate can provide the warning information of various ways.When telecommunication management plate is with the mode of word and telex network, writes message and can be presented in the same LCDs of the backlight detected.Warning information is presented on LCD in the mode of word, and this information briefly can present routinely when measure and control device panel starts, or user asks by clicking combination button.When not reaching lifetime threshold, LCD only shows service time, when reaching lifetime threshold, there will be recommended replacement information below LCD, this information presents with flashing mode.
Also other forms of warning information can be provided to user.The bi-colour light with red colored lamp and green light can be used to come to user's alarm.Under normal circumstances, bi-colour light green light Chang Liang, when alarm, red colored lamp is glimmered, and reaches the object of reminding user to replace liquid crystal.
Accompanying drawing explanation
Fig. 1 is a kind of front panel pictorial diagram of measure and control device.
Fig. 2 is the 3rd magnified partial view of Fig. 1.
Fig. 3 is the 5th magnified partial view of Fig. 1.
Fig. 4 is system framework figure of the present invention.
Fig. 5 is the process flow diagram of the inventive method.
Embodiment
Further describe patent of the present invention below in conjunction with accompanying drawing and concrete embodiment, wherein identical reference number represents element corresponding or identical in multiple diagram.Fig. 1 shows measure and control device front panel 1, and it comprises user interface 2 and stand by lamp 5, and user interface comprises LCDs (LCD) 3 and key combination 4.User can carry out the operations such as parameter configuration, information inquiry and control by key combination 4 pairs of measure and control devices.If LCD fault, user then cannot operate measure and control device, must stop using this device, until LCD is repaired or replaced.
Fig. 2 is 3 magnified partial view of Fig. 1, its illustrate backlight service time information and the particular location of warning information in LCDs.
Fig. 4 shows system framework schematic diagram of the present invention, it illustrates that processor sends accumulative backlight to telecommunication management plate and lights duration information to respond the backlight illuminating state produced from the LCD backlight control circuit being coupled to backlight, and the accumulative backlight that response stores in memory lights duration.Native system comprises LCDs 6, backlight 7, LCD backlight control circuit 8, storer 9, processor 10 and telecommunication management plate 11.LCD backlight control circuit 8 can be lighted backlight or extinguish operation, and this operation is realized with cut-off by the conducting of the I/0 pin control metal-oxide-semiconductor of CPU.When processor 10 to LCD backlight control circuit 8 send light backlight order 14 time, this circuit provides power supply to backlight 7, is lighted, and sends to processor 10 feedback information 15 that backlight lighted.After processor 10 receives this information, the accumulative backlight lightening time 26 is added up, every 1 hour, this time is stored into storer 9 li.According to this time, whether prediction backlight is reached threshold value serviceable life by processor, and afterwards, processor will send a backlight information signal 18 to telecommunication management plate 11.Then, this telecommunication management plate will provide backlight warning information 20 to user 21, be about to reach tenure of use for warning user's backlight.
Telecommunication management plate 11 can provide the warning information of various ways.When telecommunication management plate is with the mode of word and telex network, writes message and can be presented in the same LCDs 6 of the backlight detected.With reference to figure 2, warning information is presented on LCD in the mode of word, and this information briefly can present routinely when measure and control device panel 1 starts, or user asks by clicking combination button 4.When not reaching lifetime threshold, LCD only shows service time 22, when reaching lifetime threshold, there will be recommended replacement information 23 below LCD, this information presents with flashing mode.
Also other forms of warning information can be provided to user.With reference to figure 3, bi-colour light 5 with red colored lamp 24 and green light 25 can be used to user's alarm.Under normal circumstances, bi-colour light 5 green light Chang Liang, when alarm, red colored lamp 25 is glimmered, and reaches the object of reminding user to replace liquid crystal.
With reference to the specific embodiment software flow pattern of figure 5, upon power-up of the system, storage accumulative backlight lightening duration T026 is in memory obtained, every 1 second inquiry backlight illuminating state 27, and represent with 1/0, when backlight is lighted, this state represents with 1, and during extinguishing, this state represents with 0.If backlight is illuminating state, accordingly, accumulative backlight lightening duration T0 increases by 1 second.Separately establish on one and send mark 30, and represent with 1/0, when software timer timing reach 1 hour or user by combination button request time, this identifier is set to 1, processor T0 will give telecommunication management plate, and T0 is compared with lifetime threshold Tmax, when comparative result reaches alarm conditions, telecommunication management plate will provide warning information and be presented on panel.
Embodiments of the present invention are not limited thereto; under stating basic fundamental thought prerequisite on the invention; according to the ordinary technical knowledge of this area and customary means to content of the present invention make the amendment of other various ways, replacement or change, all drop within rights protection scope of the present invention.
Claims (1)
1. predict the system in measure and control device liquid crystal panel life-span for one kind, it is characterized in that comprising: backlight control circuit, storer, processor and telecommunication management plate, monitor liquid crystal panel duty by monitoring accumulative backlight lightening duration, backlight control circuit is used to control lighting and extinguishing of backlight; Storer is used to store accumulative backlight lightening duration information; Processor is used to the accumulative backlight lightening duration information be received in described in acquisition per hour, this information and lifetime threshold is compared, and provides the alarm signal of result based on the comparison; Telecommunication management plate is for providing text message and the stand by lamp information of warning information;
Described backlight control circuit is LCD backlight control circuit, lights or extinguish operation to backlight, and this is lighted or extinguishing operation is realized with cut-off by the conducting of the I/O pin control metal-oxide-semiconductor of CPU; When processor lights backlight order to LCD backlight control circuit transmission, this LCD backlight control circuit provides power supply to backlight, is lighted, and to the feedback information that processor transmission backlight has been lighted; After processor receives this information, the accumulative backlight lightening time is added up, every 1 hour, this time is stored in storer; According to this accumulative backlight point lighting time, whether prediction backlight is reached threshold value serviceable life by processor, and afterwards, processor will send a backlight information signal to telecommunication management plate; Then, described telecommunication management plate will provide backlight warning information to user, be about to reach tenure of use for warning user's backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510776143.6A CN105404029B (en) | 2015-11-12 | 2015-11-12 | The method for predicting the measure and control device liquid crystal display panel service life |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510776143.6A CN105404029B (en) | 2015-11-12 | 2015-11-12 | The method for predicting the measure and control device liquid crystal display panel service life |
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| CN105404029A true CN105404029A (en) | 2016-03-16 |
| CN105404029B CN105404029B (en) | 2018-07-20 |
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| CN201510776143.6A Expired - Fee Related CN105404029B (en) | 2015-11-12 | 2015-11-12 | The method for predicting the measure and control device liquid crystal display panel service life |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105825797A (en) * | 2016-03-31 | 2016-08-03 | 广东欧珀移动通信有限公司 | Display screen detection method and apparatus, and terminal |
| CN110969869A (en) * | 2019-11-28 | 2020-04-07 | 中冶京诚工程技术有限公司 | Traffic signal lamp control method, device and system based on mixed color light |
| CN114638831A (en) * | 2022-05-18 | 2022-06-17 | 合肥宏晶半导体科技有限公司 | Image analysis method and device |
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| CN101563721A (en) * | 2006-09-13 | 2009-10-21 | 卡迪纳尔健康303公司 | System and method for predicting a failure of a backlight for an LCD display |
| US20090289948A1 (en) * | 2008-05-12 | 2009-11-26 | Tpo Displays Corp. | Display device and method for controlling backlight thereof |
| CN101610300A (en) * | 2009-06-16 | 2009-12-23 | 中兴通讯股份有限公司 | The control method of backlight of mobile terminal and device |
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2015
- 2015-11-12 CN CN201510776143.6A patent/CN105404029B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN1858805A (en) * | 2005-12-17 | 2006-11-08 | 华为技术有限公司 | Method for recording cell work information, cell and its electronic product and charger |
| CN101563721A (en) * | 2006-09-13 | 2009-10-21 | 卡迪纳尔健康303公司 | System and method for predicting a failure of a backlight for an LCD display |
| JP2008076755A (en) * | 2006-09-21 | 2008-04-03 | Toshiba Corp | Image display device and image display method |
| US20090289948A1 (en) * | 2008-05-12 | 2009-11-26 | Tpo Displays Corp. | Display device and method for controlling backlight thereof |
| CN101610300A (en) * | 2009-06-16 | 2009-12-23 | 中兴通讯股份有限公司 | The control method of backlight of mobile terminal and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105825797A (en) * | 2016-03-31 | 2016-08-03 | 广东欧珀移动通信有限公司 | Display screen detection method and apparatus, and terminal |
| CN105825797B (en) * | 2016-03-31 | 2020-01-14 | Oppo广东移动通信有限公司 | Display screen detection method and device and terminal |
| CN110969869A (en) * | 2019-11-28 | 2020-04-07 | 中冶京诚工程技术有限公司 | Traffic signal lamp control method, device and system based on mixed color light |
| CN114638831A (en) * | 2022-05-18 | 2022-06-17 | 合肥宏晶半导体科技有限公司 | Image analysis method and device |
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| Publication number | Publication date |
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| CN105404029B (en) | 2018-07-20 |
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