CN204442330U - A kind of for fire display panel touch key-press circuit - Google Patents
A kind of for fire display panel touch key-press circuit Download PDFInfo
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- CN204442330U CN204442330U CN201520063760.7U CN201520063760U CN204442330U CN 204442330 U CN204442330 U CN 204442330U CN 201520063760 U CN201520063760 U CN 201520063760U CN 204442330 U CN204442330 U CN 204442330U
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Abstract
A kind of for fire display panel touch key-press circuit, relate to technical field of automatic fire alarm, adopt touch-key, color LCD liquid crystal display warning message, when warning message checked by needs, only with pointing touch key-press position gently, need can detect that manual key inputs, warning message adopts true color display simultaneously, and display interface rich color is directly perceived.In order to make fire display panel warning message query manipulation more convenient, warning message display is more directly perceived, the built-in touch key-press circuit of a kind of fire display panel of the utility model, for detecting key-press input, touch key-press circuit detects finger by the operation on button by detecting on button to the capacitance size change of the earth, avoid the insensitive of mechanical key, operating handle is not strong, makes warning message query manipulation easily easy.
Description
Technical field
The utility model relates to technical field of automatic fire alarm, is specifically related to a kind of for fire display panel touch key-press circuit.
Background technology
In automatic fire alarm system, at each storey setting fire display panel, fire alarm information is shown in real time and plays an important role, warning message can be inquired about easily, beautiful display alarm information intuitively, it is fire display panel function important indicator, existing fire display panel keyboard all adopts mechanical key, display adopts charactron or normal monochrome LCD liquid crystal, keyboard uses mechanical key easily impaired, fire alarm information inquiry operation inconvenience, button operation feel is not strong, fire display panel charactron or single color LCD formula display, warning message is shown directly perceived not, also unsightly.
Utility model content
Technical problem to be solved in the utility model is that providing a kind of adopts touch-key, the fire display panel of color LCD liquid crystal display warning message, when warning message checked by needs, only need with pointing touch key-press position gently, can detect that manual key inputs, warning message adopts true color display simultaneously, and display interface rich color is directly perceived.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of for fire display panel touch key-press circuit, comprise touch key-press detection chip D1, 7th resistance R7, 8th resistance R8, 11 resistance R11, 12 resistance R12, 13 resistance R13, 14 resistance R14, 16 electric capacity C16, 18 electric capacity C18, 19 electric capacity C19, 20 electric capacity C20, 21 electric capacity C21, 26 electric capacity C26, 39 resistance R39, 40 resistance R40 and key information State-output pull-up resistor, described pull-up resistor comprises the 26 resistance R26, 27 resistance R27, 28 resistance R28, 29 resistance R29, 30 resistance R30 and the 31 resistance R31, described 7th resistance R7, the 8th resistance R8 and the 12 resistance R12, the 13 resistance and the 14 resistance R14 are electrostatic induced current limiting resistance, described 16 electric capacity C16, the 18 electric capacity C18, the 19 electric capacity C19, the 20 electric capacity C20, the 21 electric capacity C21, the 26 electric capacity C26 are charge sensing sampling capacitors,
Described 7th resistance R7 one end is connected to the 2nd pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS5K interface of touch key-press detection chip D1, and another Lu Jing 16 electric capacity C16 is connected to the SNS5 interface of touch key-press detection chip D1;
Described 8th resistance R8 one end is connected to the 1st pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS4K interface of touch key-press detection chip D1, and another Lu Jing 18 electric capacity C18 is connected to the SNS4 interface of touch key-press detection chip D1;
Described 11 resistance R11 one end is connected to the 6th pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS3K interface of touch key-press detection chip D1, and another Lu Jing 19 electric capacity C19 is connected to the SNS3 interface of touch key-press detection chip D1;
Described 12 resistance R12 one end is connected to the 5th pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS2K interface of touch key-press detection chip D1, and another road the 20 electric capacity C20 is connected to the SNS2 interface of touch key-press detection chip D1;
Described 13 resistance R13 one end is connected to the 4th pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS1K interface of touch key-press detection chip D1, and another road the 26 electric capacity C26 is connected to the SNS1 interface of touch key-press detection chip D1;
Described 14 resistance R14 one end is connected to the 3rd pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS0K interface of touch key-press detection chip D1, and another road the 21 electric capacity C21 is connected to the SNS0 interface of touch key-press detection chip D1;
Described 39 resistance R39 and the 40 resistance R40 is functional configuration resistance, is connected to SCL interface and the SDA interface of touch key-press detection chip D1;
Described 26 resistance R26, the 27 resistance R27, the 28 resistance R28, the 29 resistance R29, the 30 resistance R30 and the 31 resistance R31 are connected on IS0, IS1, IS2, IS3, IS4 and IS5 interface of touch key-press detection chip D1.
The beneficial effects of the utility model are: in order to make fire display panel warning message query manipulation more convenient, warning message display is more directly perceived, the built-in touch key-press circuit of a kind of fire display panel of the utility model, for detecting key-press input, touch key-press circuit detects finger by the operation on button by detecting on button to the capacitance size change of the earth, avoid the insensitive of mechanical key, operating handle is not strong, makes warning message query manipulation easily easy.
Accompanying drawing explanation
Fig. 1 is fire display panel button schematic diagram of the present utility model.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
As shown in Figure 1, a kind of for fire display panel touch key-press circuit, comprise touch key-press detection chip D1, 7th resistance R7, 8th resistance R8, 11 resistance R11, 12 resistance R12, 13 resistance R13, 14 resistance R14, 16 electric capacity C16, 18 electric capacity C18, 19 electric capacity C19, 20 electric capacity C20, 21 electric capacity C21, 26 electric capacity C26, 39 resistance R39, 40 resistance R40 and key information State-output pull-up resistor, described pull-up resistor comprises the 26 resistance R26, 27 resistance R27, 28 resistance R28, 29 resistance R29, 30 resistance R30 and the 31 resistance R31, described 7th resistance R7, the 8th resistance R8 and the 12 resistance R12, the 13 resistance and the 14 resistance R14 are electrostatic induced current limiting resistance, described 16 electric capacity C16, the 18 electric capacity C18, the 19 electric capacity C19, the 20 electric capacity C20, the 21 electric capacity C21, the 26 electric capacity C26 are charge sensing sampling capacitors,
Described 7th resistance R7 one end is connected to the 2nd pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS5K interface of touch key-press detection chip D1, and another Lu Jing 16 electric capacity C16 is connected to the SNS5 interface of touch key-press detection chip D1;
Described 8th resistance R8 one end is connected to the 1st pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS4K interface of touch key-press detection chip D1, and another Lu Jing 18 electric capacity C18 is connected to the SNS4 interface of touch key-press detection chip D1;
Described 11 resistance R11 one end is connected to the 6th pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS3K interface of touch key-press detection chip D1, and another Lu Jing 19 electric capacity C19 is connected to the SNS3 interface of touch key-press detection chip D1;
Described 12 resistance R12 one end is connected to the 5th pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS2K interface of touch key-press detection chip D1, and another road the 20 electric capacity C20 is connected to the SNS2 interface of touch key-press detection chip D1;
Described 13 resistance R13 one end is connected to the 4th pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS1K interface of touch key-press detection chip D1, and another road the 26 electric capacity C26 is connected to the SNS1 interface of touch key-press detection chip D1;
Described 14 resistance R14 one end is connected to the 3rd pin of button socket X4, and the other end is divided into two-way, and a road is connected to the SNS0K interface of touch key-press detection chip D1, and another road the 21 electric capacity C21 is connected to the SNS0 interface of touch key-press detection chip D1;
Described 39 resistance R39 and the 40 resistance R40 is functional configuration resistance, is connected to SCL interface and the SDA interface of touch key-press detection chip D1;
Described 26 resistance R26, the 27 resistance R27, the 28 resistance R28, the 29 resistance R29, the 30 resistance R30 and the 31 resistance R31 are connected on IS0, IS1, IS2, IS3, IS4 and IS5 interface of touch key-press detection chip D1.
The course of work: touch the capacitance size change of electric capacity button to the earth that detection chip D1 detects the connection on IS0, IS1, IS2, IS3, IS4 and IS5 in real time and detect finger by the operation on button, then externally export detected push button signalling by SNS0, SNS1, SNS2, SNS3, SNS4 and SNS5, realize touch key-press measuring ability.
Use a button detection chip, 14 1/10W resistance, six patch capacitors, realize the measuring ability to touch key-press.
In embodiment, each component value is:
Button detection chip: D1:AT42QT1060-MMU;
Resistance: R39=R40=0 Ω (1/10W);
R7＝R8＝R11＝R12＝R13＝R14＝R26＝R27＝R28＝R29＝R30＝R31＝10kΩ(1/10W)；
Electric capacity: C16=C18=C19=C20=C21=C26=0.01 μ F.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. one kind for fire display panel touch key-press circuit, it is characterized in that: comprise touch key-press detection chip (D1), 7th resistance (R7), 8th resistance (R8), 11 resistance (R11), 12 resistance (R12), 13 resistance (R13), 14 resistance (R14), 16 electric capacity (C16), 18 electric capacity (C18), 19 electric capacity (C19), 20 electric capacity (C20), 21 electric capacity (C21), 26 electric capacity (C26), 39 resistance (R39), 40 resistance (R40) and key information State-output pull-up resistor, described pull-up resistor comprises the 26 resistance (R26), 27 resistance (R27), 28 resistance (R28), 29 resistance (R29), 30 resistance (R30) and the 31 resistance (R31),
Described 7th resistance (R7) one end is connected to the 2nd pin of button socket (X4), the other end is divided into two-way, one tunnel is connected to the SNS5K interface of touch key-press detection chip (D1), and another Lu Jing 16 electric capacity (C16) is connected to the SNS5 interface of touch key-press detection chip (D1);
Described 8th resistance (R8) one end is connected to the 1st pin of button socket (X4), the other end is divided into two-way, one tunnel is connected to the SNS4K interface of touch key-press detection chip (D1), and another Lu Jing 18 electric capacity (C18) is connected to the SNS4 interface of touch key-press detection chip (D1);
Described 11 resistance (R11) one end is connected to the 6th pin of button socket (X4), the other end is divided into two-way, one tunnel is connected to the SNS3K interface of touch key-press detection chip (D1), and another Lu Jing 19 electric capacity (C19) is connected to the SNS3 interface of touch key-press detection chip (D1);
Described 12 resistance (R12) one end is connected to the 5th pin of button socket (X4), the other end is divided into two-way, one tunnel is connected to the SNS2K interface of touch key-press detection chip (D1), and another road the 20 electric capacity (C20) is connected to the SNS2 interface of touch key-press detection chip (D1);
Described 13 resistance (R13) one end is connected to the 4th pin of button socket (X4), the other end is divided into two-way, one tunnel is connected to the SNS1K interface of touch key-press detection chip (D1), and another road the 26 electric capacity (C26) is connected to the SNS1 interface of touch key-press detection chip (D1);
Described 14 resistance (R14) one end is connected to the 3rd pin of button socket (X4), the other end is divided into two-way, one tunnel is connected to the SNS0K interface of touch key-press detection chip (D1), and another road the 21 electric capacity (C21) is connected to the SNS0 interface of touch key-press detection chip (D1);
Described 39 resistance (R39) and the 40 resistance (R40) are functional configuration resistance, are connected to SCL interface and the SDA interface of touch key-press detection chip (D1);
Described 26 resistance (R26), the 27 resistance (R27), the 28 resistance (R28), the 29 resistance (R29), the 30 resistance (R30) and the 31 resistance (R31) are connected on IS0, IS1, IS2, IS3, IS4 and IS5 interface of touch key-press detection chip (D1).
2. one according to claim 1 is used for fire display panel touch key-press circuit, it is characterized in that: described 7th resistance (R7), the 8th resistance (R8) and the 12 resistance (R12), the 13 resistance (R13) and the 14 resistance (R14) are electrostatic induced current limiting resistance.
3. one according to claim 1 is used for fire display panel touch key-press circuit, it is characterized in that: described 16 electric capacity (C16), the 18 electric capacity (C18), the 19 electric capacity (C19), the 20 electric capacity (C20), the 21 electric capacity (C21), the 26 electric capacity (C26) are charge sensing sampling capacitors.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520063760.7U CN204442330U (en) | 2015-01-29 | 2015-01-29 | A kind of for fire display panel touch key-press circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520063760.7U CN204442330U (en) | 2015-01-29 | 2015-01-29 | A kind of for fire display panel touch key-press circuit |
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| CN204442330U true CN204442330U (en) | 2015-07-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084990A (en) * | 2019-05-09 | 2019-08-02 | 蚌埠依爱消防电子有限责任公司 | A kind of 2 line fire display panel fire alarm information display methods |
| CN111769827A (en) * | 2020-04-13 | 2020-10-13 | 芜湖宏景电子股份有限公司 | Touch key circuit of vehicle-mounted multimedia product |
-
2015
- 2015-01-29 CN CN201520063760.7U patent/CN204442330U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084990A (en) * | 2019-05-09 | 2019-08-02 | 蚌埠依爱消防电子有限责任公司 | A kind of 2 line fire display panel fire alarm information display methods |
| CN111769827A (en) * | 2020-04-13 | 2020-10-13 | 芜湖宏景电子股份有限公司 | Touch key circuit of vehicle-mounted multimedia product |
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