CN118688545B - A method for closed-loop detection of working conditions of capacitive touch screen - Google Patents
A method for closed-loop detection of working conditions of capacitive touch screen Download PDFInfo
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- CN118688545B CN118688545B CN202410886054.6A CN202410886054A CN118688545B CN 118688545 B CN118688545 B CN 118688545B CN 202410886054 A CN202410886054 A CN 202410886054A CN 118688545 B CN118688545 B CN 118688545B
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- touch screen
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 39
- 230000005684 electric field Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
本发明公开了一种闭环检测电梯用电容式触摸屏工作状况的方法，包括以下步骤，步骤一，设置测试天线，在触摸显示屏上设有一个测试天线；步骤二，发送检测信号，触摸屏控制板通过测试信号发生器发送检测信号给测试天线；步骤三，接收并反馈检测信号，测试天线接收检测信号，随后触发触摸屏的检测动作，反馈给触摸屏控制板，该发明，触摸屏控制板能够闭环测试触摸屏的信号回路，通过该信号回路能够让我们的触摸设备判断出触摸屏的工作状况，如果发生异常则可以通过重启设备以及显示对应信息提醒用户采取合适的动作。该措施对于保证电梯用触摸屏这种需要全年无休的设备的稳定工作非常必要。
The present invention discloses a method for closed-loop detection of the working condition of a capacitive touch screen for an elevator, comprising the following steps: step 1, setting a test antenna, and providing a test antenna on a touch display screen; step 2, sending a detection signal, and the touch screen control panel sends the detection signal to the test antenna through a test signal generator; step 3, receiving and feeding back the detection signal, and the test antenna receives the detection signal, and then triggers the detection action of the touch screen, and feeds back to the touch screen control panel. In this invention, the touch screen control panel can close the signal loop of the touch screen, and through the signal loop, our touch device can judge the working condition of the touch screen. If an abnormality occurs, the user can be reminded to take appropriate actions by restarting the device and displaying corresponding information. This measure is very necessary to ensure the stable operation of equipment such as the elevator touch screen that needs to be used all year round.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a method for detecting the working condition of a capacitive touch screen in a closed loop.
Background
The capacitive touch screen is increasingly applied in the elevator industry, but the touch screen is a relatively precise device and has high requirements on the use environment. But elevators are public transportation means, and the use environment varies significantly due to surrounding influences. A great challenge is presented to the stable operation of the touch screen. Particularly, the judgment parameter of the touch screen is greatly deviated, so that the driving of the touch screen cannot work, and the operation of the elevator is disabled.
Therefore, a method for detecting the working condition of the capacitive touch screen in a closed loop mode is designed.
Disclosure of Invention
In order to overcome the defects, the invention provides a method for detecting the working condition of a capacitive touch screen in a closed loop.
The invention realizes the above purpose through the following technical scheme:
a method for detecting the working condition of a capacitive touch screen for an elevator in a closed loop mode comprises the following steps:
step one, setting a test antenna, wherein the touch display screen is provided with a test antenna;
step two, sending a detection signal, wherein the touch screen control board sends the detection signal to the test antenna through the test signal generator;
Step three, receiving and feeding back a detection signal, receiving the detection signal by a test antenna, then triggering the detection action of the touch screen, and feeding back the detection action to a touch screen control board;
The detection signal sent by the touch screen control board and the signal received by the touch screen are compared, so that whether the whole loop works normally can be judged, and if any problem occurs in the loop, the intervention processing is performed by adjusting the touch screen parameters, restarting, resetting and other operations.
The touch screen control board generates a 0V/5V alternating electric field on the test antenna through the test signal generator, a trigger signal is formed on the touch screen by the electric field, corresponding position coordinates are output to the touch screen control board by the touch screen driving board, comparison data of built-in trigger positions are arranged in the touch screen control board, and whether the whole signal path of the touch screen is normal can be judged by confirming the self-trigger positions through internal comparison.
The test antenna is positioned at the upper right side or the upper left side of the touch display screen, the test antenna is a transparent rectangular conductive film with the area not smaller than 2 square centimeters, and the impedance of the test antenna is 50-75 ohms.
The detection signals are divided into two signals of 5V alternating current and 0V ground level.
Preferably, the touch screen control board is electrically connected with the touch screen through the touch screen driving board.
The method for detecting the working condition of the capacitive touch screen in the closed loop mode has the advantages that the touch screen control board can be used for testing the signal loop of the touch screen in the closed loop mode, the touch equipment can judge the working condition of the touch screen through the signal loop, and if abnormality occurs, a user can be reminded of taking proper actions by restarting the equipment and displaying corresponding information. This measure is necessary to ensure stable operation of the equipment, such as the touch screen for elevators, which needs to be free from rest throughout the year.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
fig. 1 is a schematic diagram of the structure and signal flow of the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
As shown in fig. 1, a method for detecting the working condition of a capacitive touch screen for an elevator in a closed loop manner comprises the following steps:
step one, setting a test antenna, wherein the touch display screen is provided with a test antenna;
step two, sending a detection signal, wherein the touch screen control board sends the detection signal to the test antenna through the test signal generator;
Step three, receiving and feeding back a detection signal, receiving the detection signal by a test antenna, then triggering the detection action of the touch screen, and feeding back the detection action to a touch screen control board;
The detection signal sent by the touch screen control board and the signal received by the touch screen are compared, so that whether the whole loop works normally can be judged, and if any problem occurs in the loop, the intervention processing is performed by adjusting the touch screen parameters, restarting, resetting and other operations.
The working principle of the method for detecting the working condition of the capacitive touch screen for the elevator is that when the touch screen assembly for the elevator is assembled, a piece of transparent conductive material is stuck to an unused area of the touch screen to serve as an additional touch event test antenna, and the working condition of the test antenna is controlled by an internal circuit of a touch screen control board. And in the non-working state, the high impedance state is kept, and at the moment, the corresponding area of the touch screen can not generate touch signals. The level of 0V and the alternating level of 5V are kept in the working state, and the level signals can cause the touch screen to generate signals and feed back corresponding position data. By comparing the position data with the previous preset data. The internal control circuitry determines if the touch screen loop is functioning properly.
By the method, the working condition of the touch screen of the elevator can be timely and accurately confirmed, so that a user is reminded of carrying out targeted measures, and an elevator maintenance person is timely informed of maintenance.
This is equivalent to the touch screen control board being able to test the signal loop of the touch screen in a closed loop. The signal loop can enable the touch equipment to judge the working condition of the touch screen, and if the touch equipment is abnormal, the user can be reminded to take proper action by restarting the equipment and displaying corresponding information. This measure is necessary to ensure stable operation of the equipment, such as the touch screen for elevators, which needs to be retired throughout the year;
The touch screen control board generates a 0V/5V alternating electric field on the test antenna through the test signal generator, a trigger signal is formed on the touch screen by the electric field, corresponding position coordinates are output to the touch screen control board by the touch screen driving board, comparison data of built-in trigger positions are arranged in the touch screen control board, and whether the whole signal path of the touch screen is normal can be judged by confirming the self-trigger positions through internal comparison.
The test antenna is positioned at the upper right side or the upper left side of the touch display screen, the test antenna is a transparent rectangular conductive film with the area not smaller than 2 square centimeters, and the impedance of the test antenna is 50-75 ohms. The detection signals are divided into two signals of 5V alternating current and 0V ground level.
Specifically, the touch screen control board is electrically connected with the touch screen through the touch screen driving board.
The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to provide a portable electronic device capable of performing various changes and modifications without departing from the scope of the technical spirit of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (2)
1. A method for detecting the working condition of a capacitive touch screen in a closed loop mode is characterized by comprising the following steps:
step one, setting a test antenna, wherein the touch display screen is provided with a test antenna;
step two, sending a detection signal, wherein the touch screen control board sends the detection signal to the test antenna through the test signal generator;
Step three, receiving and feeding back a detection signal, receiving the detection signal by a test antenna, then triggering the detection action of the touch screen, and feeding back the detection action to a touch screen control board;
The detection signal sent by the touch screen control board and the signal received by the touch screen are compared, so that whether the whole loop works normally can be judged, and if any problem occurs in the loop, the intervention processing is performed by adjusting the touch screen parameters and restarting the reset operation;
The touch screen control board generates a 0V/5V alternating electric field on the test antenna through the test signal generator, a trigger signal is formed on the touch screen by the electric field, corresponding position coordinates are output to the touch screen control board by the touch screen driving board, comparison data of built-in trigger positions are arranged in the touch screen control board, and after internal comparison, the position of the trigger is confirmed, so that whether the whole signal path of the touch screen is normal or not can be judged;
The test antenna is positioned at the upper right side or the upper left side of the touch display screen, the test antenna is a transparent rectangular conductive film with the area not smaller than 2 square centimeters, and the impedance of the test antenna is 50-75 ohms;
the detection signals are divided into two signals of 5V alternating current and 0V ground level.
2. The method for detecting the operation condition of a capacitive touch screen in a closed loop as claimed in claim 1, wherein the touch screen control board is electrically connected with the touch screen through a touch screen driving board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410886054.6A CN118688545B (en) | 2024-07-03 | 2024-07-03 | A method for closed-loop detection of working conditions of capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410886054.6A CN118688545B (en) | 2024-07-03 | 2024-07-03 | A method for closed-loop detection of working conditions of capacitive touch screen |
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| Publication Number | Publication Date |
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| CN118688545A CN118688545A (en) | 2024-09-24 |
| CN118688545B true CN118688545B (en) | 2025-03-18 |
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| CN202410886054.6A Active CN118688545B (en) | 2024-07-03 | 2024-07-03 | A method for closed-loop detection of working conditions of capacitive touch screen |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760003A (en) * | 2011-04-26 | 2012-10-31 | 识骅科技股份有限公司 | Method for detecting touch point of touch screen |
| CN103926497A (en) * | 2013-01-10 | 2014-07-16 | 上海海尔集成电路有限公司 | Test apparatus and method for touch screen module, and touch screen module |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375631B (en) * | 2010-08-19 | 2014-06-25 | 扬升照明股份有限公司 | Surface capacitive touch panel and control method thereof |
| CN103049158B (en) * | 2012-12-31 | 2016-03-16 | 深圳市汇顶科技股份有限公司 | A kind of touch detecting method of capacitive touch screen and system |
| CN204314848U (en) * | 2015-01-07 | 2015-05-06 | 深圳市信濠光电科技有限公司 | A kind of touch-screen conducting film automatic detection device |
| CN107187973B (en) * | 2017-06-29 | 2019-07-16 | 江苏威尔曼科技有限公司 | A kind of elevator touch button device for facilitating blind person to use |
| US12182363B2 (en) * | 2022-06-22 | 2024-12-31 | Microsoft Technology Licensing, Llc | Touchscreen sensor calibration using adaptive noise classification |
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2024
- 2024-07-03 CN CN202410886054.6A patent/CN118688545B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760003A (en) * | 2011-04-26 | 2012-10-31 | 识骅科技股份有限公司 | Method for detecting touch point of touch screen |
| CN103926497A (en) * | 2013-01-10 | 2014-07-16 | 上海海尔集成电路有限公司 | Test apparatus and method for touch screen module, and touch screen module |
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| CN118688545A (en) | 2024-09-24 |
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