CN102565692A - Touch key detection device - Google Patents
Touch key detection device Download PDFInfo
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- CN102565692A CN102565692A CN2011104390258A CN201110439025A CN102565692A CN 102565692 A CN102565692 A CN 102565692A CN 2011104390258 A CN2011104390258 A CN 2011104390258A CN 201110439025 A CN201110439025 A CN 201110439025A CN 102565692 A CN102565692 A CN 102565692A
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Abstract
The invention discloses a touch key detection device. The touch key detection device comprises an AD (analog-digital) conversion module, a current measurement module, a communication interface module, a main controller and a liquid crystal display module, wherein the communication interface module is connected with the main controller, the current measurement module is connected with the main controller through the AD conversion module, and the main controller is connected with the liquid crystal display module; the current measurement module is used for transmitting a measured current analog signal to the main controller after AD conversion; the communication interface module is used for transmitting a key value of a touch key to the main controller; and the liquid crystal display module is used for displaying a current value and the key value. According to the touch key detection device, dynamic current, static current and the key value of a touch key product on a production line can be precisely detected, detection efficiency and accuracy are improved, and data can be displayed on a liquid crystal display device for facilitating reading and identification of people.
Description
Technical field
The present invention relates to a kind of electronic product pick-up unit, relate in particular to a kind of touch key-press pick-up unit.
Background technology
At present, touch key-press is widely used in consumer electronics field, and is along with the demand of touch key-press constantly increases, also increasingly high to the requirement of button Production Line efficient and product percent of pass.The quality of production of touch key-press product possibly have some flaws, problems such as for example big electric current, triggerless, card key.The working current that so-called big electric current is a button surpasses certain predetermined value; So-called triggerless promptly pushes button does not have key assignments output; So-called card key is that button keeps the state pressed always.In order to guarantee the quality of production of touch key-press, need test quiescent current, dynamic current, key assignments etc. in process of production.Therefore for touch key-press manufacturer, it is very significant developing the button quality detection device that a kind of test speed is very fast, efficient is higher and error is less.
Summary of the invention
The object of the present invention is to provide a kind of touch key-press pick-up unit, can realize the detection that dynamic current, quiescent current, key assignments to the touch key-press finished product on the production line carry out, improve detection efficiency and accuracy rate.
A kind of touch key-press pick-up unit comprises AD modular converter 101, current measurement module 102, communication interface modules 103, master controller 104 and LCD MODULE 105; Said communication interface modules 103 links to each other with primary controller 104, and said current measurement module 102 links to each other with primary controller 104 through AD modular converter 101, and said master controller 104 links to each other with LCD MODULE 105; Current measurement module 102 sends the current analog signal that measures to master controller 104 after the AD conversion; Said communication interface modules 103 is passed to master controller 104 with the key assignments of touch key-press; Said LCD MODULE 105 shows current value, key assignments.
The object of the invention can also further realize through following technical measures:
Aforementioned touch key-press pick-up unit also comprises VRM Voltage Regulator Module 201, and said VRM Voltage Regulator Module 201 links to each other with master controller 102, and said VRM Voltage Regulator Module 201 provides the power supply of multiple voltage value for the touch key-press product.
Aforementioned touch key-press pick-up unit; Wherein current measurement module 102 comprises flow measurement resistance R 5, resistance R 1, resistance R 3, resistance R 6, resistance R 8, capacitor C 1, capacitor C 2, operational amplifier U1; One end of said flow measurement resistance R 5 is connected on the power supply VCC, and is connected with the end of oppisite phase of operational amplifier U1 through resistance R 3; Said flow measurement resistance R 5 other ends are connected through the in-phase end of resistance R 6 with operational amplifier U1; The output terminal of the said operational amplifier U1 resistance R 1 through connecting, capacitor C 2, resistance R 8 successively is connected with GND electrically, also is parallel with capacitor C 1 on the said resistance R 1; The two ends of said capacitor C 2 also are connected with operational amplifier U1 in-phase end and end of oppisite phase respectively; The input of the power supply of said operational amplifier U1 is anodal to be connected with power supply VCC, and power supply is imported negative pole and is connected with GND electrically.
Compared with prior art; The invention has the beneficial effects as follows: can realize dynamic current, quiescent current, the key assignments of the touch key-press product on the production line are accurately detected; Improve detection efficiency and accuracy rate, and can with data presentation on LCD, be convenient for people to read, discern.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is the structured flowchart of one embodiment of the invention;
Fig. 3 is the circuit theory diagrams of current measurement module.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
As shown in Figure 1, the touch key-press pick-up unit comprises AD modular converter 101, current measurement module 102, communication interface modules 103, master controller 104 and LCD MODULE 105; Said communication interface modules 103 links to each other with primary controller 104, and said current measurement module 102 links to each other with primary controller 104 through AD modular converter 101, and said master controller 104 links to each other with LCD MODULE 105; Current measurement module 102 sends the current analog signal that measures to master controller 104 after the AD conversion; Said communication interface modules 103 is passed to master controller 104 with the key assignments of touch key-press; Said LCD MODULE 105 shows current value, key assignments.
Wherein, said communication module 103 can be a certain among the communication interfaces such as SPI, I2C, UART.
Further, the said master controller 104 msp430f169 chip that is TI company.
As shown in Figure 2; Said touch key-press pick-up unit can also comprise a VRM Voltage Regulator Module 201; Said VRM Voltage Regulator Module 201 links to each other with said main control 104 devices; Said VRM Voltage Regulator Module 201 can be used for providing the power supply of multiple voltage value to the touch key-press product when detecting, the power supply of 3.3V, 4.5V for example is provided.
As shown in Figure 3; Current measurement module 102 comprises flow measurement resistance R 5, resistance R 1, resistance R 3, resistance R 6, resistance R 8, capacitor C 1, capacitor C 2, operational amplifier U1; One end of said flow measurement resistance R 5 is connected on the power supply VCC, and is connected with the end of oppisite phase of operational amplifier U1 through resistance R 3; Said flow measurement resistance R 5 other ends are connected through the in-phase end of resistance R 6 with operational amplifier U1; The output terminal of the said operational amplifier U1 resistance R 1 through connecting, capacitor C 2, resistance R 8 successively is connected with GND electrically, also is parallel with capacitor C 1 on the said resistance R 1; The two ends of said capacitor C 2 also are connected with operational amplifier U1 in-phase end and end of oppisite phase respectively; The input of the power supply of said operational amplifier U1 is anodal to be connected with power supply VCC, and power supply is imported negative pole and is connected with GND electrically.The electric current of check point converts voltage signal to through flow measurement resistance R 5; The voltage signal of the current measurement circuit of being made up of resistance R 3, resistance R 6, resistance R 8, resistance R 1, capacitor C 2, operational amplifier U1 after to above-mentioned conversion compares, and comparative result is exported to AD modular converter 101.
Except that the foregoing description, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (3)
1. a touch key-press pick-up unit is characterized in that, comprises AD modular converter (101), current measurement module (102), communication interface modules (103), master controller (104) and LCD MODULE (105); Said communication interface modules (103) links to each other with primary controller (104), and said current measurement module (102) links to each other with primary controller (104) through AD modular converter (101), and said master controller (104) links to each other with LCD MODULE (105); Current measurement module (102) sends the current analog signal that measures to master controller (104) after the AD conversion; Said communication interface modules (103) is passed to master controller (104) with the key assignments of touch key-press; Said LCD MODULE (105) shows current value, key assignments.
2. touch key-press pick-up unit as claimed in claim 1; It is characterized in that; Also comprise VRM Voltage Regulator Module (201), said VRM Voltage Regulator Module (201) links to each other with master controller (102), and said VRM Voltage Regulator Module (201) provides the power supply of multiple voltage value for the touch key-press product.
3. according to claim 1 or claim 2 touch key-press pick-up unit; It is characterized in that; Said current measurement module (102) comprises flow measurement resistance R 5, resistance R 1, resistance R 3, resistance R 6, resistance R 8, capacitor C 1, capacitor C 2, operational amplifier U1; One end of said flow measurement resistance R 5 is connected on the power supply VCC, and is connected with the end of oppisite phase of operational amplifier U1 through resistance R 3; Said flow measurement resistance R 5 other ends are connected through the in-phase end of resistance R 6 with operational amplifier U1; The output terminal of the said operational amplifier U1 resistance R 1 through connecting, capacitor C 2, resistance R 8 successively is connected with GND electrically, also is parallel with capacitor C 1 on the said resistance R 1; The two ends of said capacitor C 2 also are connected with operational amplifier U1 in-phase end and end of oppisite phase respectively; The input of the power supply of said operational amplifier U1 is anodal to be connected with power supply VCC, and power supply is imported negative pole and is connected with GND electrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104390258A CN102565692A (en) | 2011-12-26 | 2011-12-26 | Touch key detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104390258A CN102565692A (en) | 2011-12-26 | 2011-12-26 | Touch key detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102565692A true CN102565692A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104390258A Pending CN102565692A (en) | 2011-12-26 | 2011-12-26 | Touch key detection device |
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| CN (1) | CN102565692A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207370A (en) * | 2013-03-21 | 2013-07-17 | 福建捷联电子有限公司 | Method for automatically detecting touch key state and display device |
| CN113422597A (en) * | 2021-06-29 | 2021-09-21 | 中微半导体(深圳)股份有限公司 | Touch key value self-adaptive circuit and method |
Citations (7)
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| US4891777A (en) * | 1983-05-11 | 1990-01-02 | The Laitram Corporation | Single hand keyboard arrays providing alphanumeric capabilities from twelve keys |
| US6894477B1 (en) * | 2003-03-04 | 2005-05-17 | Fazaki North America, Inc. | Electrical current monitor |
| CN101588516A (en) * | 2008-05-23 | 2009-11-25 | 鸿富锦精密工业（深圳）有限公司 | Automation system for testing mobile phone keyboard and testing method thereof |
| CN101661418A (en) * | 2008-08-26 | 2010-03-03 | 比亚迪股份有限公司 | Keyboard testing system |
| CN201477190U (en) * | 2009-08-22 | 2010-05-19 | 福建捷联电子有限公司 | Keying circuit board test device |
| CN102004573A (en) * | 2010-07-28 | 2011-04-06 | 深圳市汇顶科技有限公司 | Touch detection system and detection method thereof |
| CN202393882U (en) * | 2011-12-26 | 2012-08-22 | 江苏惠通集团有限责任公司 | Touch key detecting device |
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2011
- 2011-12-26 CN CN2011104390258A patent/CN102565692A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891777A (en) * | 1983-05-11 | 1990-01-02 | The Laitram Corporation | Single hand keyboard arrays providing alphanumeric capabilities from twelve keys |
| US6894477B1 (en) * | 2003-03-04 | 2005-05-17 | Fazaki North America, Inc. | Electrical current monitor |
| CN101588516A (en) * | 2008-05-23 | 2009-11-25 | 鸿富锦精密工业（深圳）有限公司 | Automation system for testing mobile phone keyboard and testing method thereof |
| CN101661418A (en) * | 2008-08-26 | 2010-03-03 | 比亚迪股份有限公司 | Keyboard testing system |
| CN201477190U (en) * | 2009-08-22 | 2010-05-19 | 福建捷联电子有限公司 | Keying circuit board test device |
| CN102004573A (en) * | 2010-07-28 | 2011-04-06 | 深圳市汇顶科技有限公司 | Touch detection system and detection method thereof |
| CN202393882U (en) * | 2011-12-26 | 2012-08-22 | 江苏惠通集团有限责任公司 | Touch key detecting device |
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| 石杨: "基于触摸屏控制器芯片的高精度低功耗ADC设计", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207370A (en) * | 2013-03-21 | 2013-07-17 | 福建捷联电子有限公司 | Method for automatically detecting touch key state and display device |
| CN113422597A (en) * | 2021-06-29 | 2021-09-21 | 中微半导体(深圳)股份有限公司 | Touch key value self-adaptive circuit and method |
| CN113422597B (en) * | 2021-06-29 | 2023-10-10 | 中微半导体(深圳)股份有限公司 | Touch key value self-adapting circuit and method |
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Application publication date: 20120711 |