CN109828676B - Keyboard using contact type heat-sensitive sensor as key - Google Patents
Keyboard using contact type heat-sensitive sensor as key Download PDFInfo
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- CN109828676B CN109828676B CN201811643835.3A CN201811643835A CN109828676B CN 109828676 B CN109828676 B CN 109828676B CN 201811643835 A CN201811643835 A CN 201811643835A CN 109828676 B CN109828676 B CN 109828676B
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Abstract
The invention discloses a keyboard using a contact type heat-sensitive sensor as a key, which comprises an upper cover, wherein a module is clamped at the bottom of the upper cover, a temperature calibration area is arranged on one side of the surface of the module, an indicator lamp is embedded on the surface of the module, a lampshade is fixedly connected to the surface of the indicator lamp, a back adhesive is adhered to the bottom of the module, a foot pad is arranged at the bottom of the lower cover, and a USB connecting wire is fixedly connected to one side of the upper cover. The invention has reasonable design and practical function, the thermosensitive transistor is arranged, and the thermosensitive sensor is manufactured by adopting the junction resistance temperature characteristic of the PN junction of the thermosensitive diode, the thermosensitive sensor senses the change of the surface temperature, and the keyboard can automatically adjust the threshold value (namely control temperature value) of key temperature detection according to the current hand temperature, thereby avoiding the risk of false input or no input.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a keyboard using a contact type heat-sensitive sensor as a key.
Background
The computer keyboard is a channel for inputting the control information of text information into a computer, and is evolved from the keyboard of an English typewriter. It was first presented on a computer, also a component called a "televised typewriter", and early keyboards were almost mechanical keyboards, precisely mechanical contact keyboards, which used electrical contact as a combination with a logo and a mechanical metal spring as a spring mechanism. The keyboard has the advantages of hard hand feeling, long key stroke, quick and crisp key resistance change and very close hand feeling to the typewriter keyboard, so the keyboard is popular at the moment, but the currently used keyboard has some defects in use, such as: when the existing keyboard is used, the sensitivity of keys is low, input errors and no input phenomenon are easy to occur, and the existing keyboard has certain limitation.
Disclosure of Invention
The invention mainly aims to provide a keyboard using a contact type heat-sensitive sensor as a key, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an use keyboard of contact heat-sensitive sensor as button, includes the upper cover, the bottom joint of upper cover has the module, surface one side of module is provided with the temperature calibration area, the surface scarf joint of module has the pilot lamp, the fixed surface of pilot lamp is connected with the lamp shade, the bottom of module bonds there is the gum, the bottom bonding of gum has the PCB board, the fixed surface of PCB board is connected with heat-sensitive transistor, the bottom fixedly connected with iron plate of PCB board, the bottom fixedly connected with lower cover of iron plate, the bottom of lower cover is provided with the callus on the sole, one side fixedly connected with USB connecting wire of upper cover.
Further, the thermosensitive transistor is a thermosensitive sensor manufactured by adopting the junction resistance temperature characteristic of a PN junction of the thermosensitive diode, and the thermosensitive transistor is made of a silicon triode.
Further, a plurality of thermosensitive transistors are arranged and are symmetrically connected with the key die holes of the module.
Further, the output end of the USB connecting wire is electrically connected with the input end of the PCB through the connecting wire.
Further, the lower cover is made of polyethylene fiber materials, an activated carbon adsorption layer is embedded around the bottom of the lower cover, and the thickness of the activated carbon adsorption layer at the bottom of the lower cover is 0.3-0.8cm.
Further, the back glue is arranged at the cavity positions of the module and the PCB, and the positions of the bulges of the back glue and the die holes on the surface of the module are mutually symmetrical.
Compared with the prior art, the invention has the following beneficial effects: the invention has reasonable design and practical function, the thermosensitive transistor is arranged, the thermosensitive transistor is made of the junction resistance temperature characteristic of the PN junction of the thermosensitive diode, the thermosensitive transistor is made of a silicon triode, when a person touches a key, the thermosensitive sensor senses the surface temperature to be changed, at the moment, the resistance value of the PN junction is changed, the change of the resistance can be converted into a voltage signal through a bridge circuit or a simpler voltage dividing circuit, the IC can judge that the corresponding key is pressed through the voltage signal, thus the key input function is completed, the finger is pressed on the temperature calibrating area before the input, the temperature of the finger is calibrated through the calibration, the keyboard can automatically adjust the threshold value (namely the control temperature value) of the key temperature detection according to the current hand temperature, thereby avoiding the risk of false input or no input.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of an explosive structure according to the present invention.
FIG. 3 is a schematic view of a module structure according to the present invention
In the figure: 1. an upper cover; 2. a module; 3. back glue; 4. a PCB board; 5. an iron plate; 6. a lower cover; 7. foot pads; 8. a USB connecting wire; 9. a lamp shade; 10. a temperature calibration zone; 11. an indicator light; 12. a thermo-transistor.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-2, a keyboard using a contact type heat-sensitive sensor as a key comprises an upper cover 1, wherein a module 2 is clamped at the bottom of the upper cover 1, a temperature calibration area 10 is arranged on one side of the surface of the module 2, an indicator lamp 11 is embedded on the surface of the module 2, a lampshade 9 is fixedly connected to the surface of the indicator lamp 11, a back adhesive 3 is adhered to the bottom of the module 2, a PCB 4 is adhered to the bottom of the back adhesive 3, a heat-sensitive transistor 12 is fixedly connected to the surface of the PCB 4, an iron plate 5 is fixedly connected to the bottom of the PCB 4, a lower cover 6 is fixedly connected to the bottom of the iron plate 5, a foot pad 7 is arranged at the bottom of the lower cover 6, and a USB connecting wire 8 is fixedly connected to one side of the upper cover 1.
The heat sensitive transistor 12 is a heat sensitive sensor manufactured by adopting the junction resistance temperature characteristic of a PN junction of a heat sensitive diode, the heat sensitive transistor 12 is made of a silicon triode, when a person touches a key, the heat sensitive sensor senses the change of the surface temperature, at the moment, the resistance value of the PN junction of the heat sensitive transistor is changed, the change of the resistance can be converted into a voltage signal through a bridge circuit or a simpler voltage dividing circuit, and the IC can judge that the corresponding key is pressed through the voltage signal, thereby completing the key input function.
The plurality of thermosensitive transistors 12 are arranged, the plurality of thermosensitive transistors 12 are symmetrically connected with the key die holes of the module 2, and the sensitivity of the keyboard can be effectively increased through the plurality of thermosensitive transistors 12.
The output end of the USB connecting wire 8 is electrically connected with the input end of the PCB 4 through a connecting wire, and the effect of inputting the computer is achieved through the electrical connection between the USB connecting wire 8 and the PCB 4.
The lower cover 6 is made of polyethylene fiber materials, active carbon adsorption layers are embedded around the bottom of the lower cover 6, the thickness of the active carbon adsorption layers at the bottom of the lower cover 6 is 0.3-0.8cm, the rigidity and strength of the keyboard can be effectively improved through the materials of the lower cover 6, the service time of the keyboard can be effectively prolonged, and the effects of adsorbing dust and protecting the keyboard can be effectively achieved through the active carbon adsorption layers at the bottom of the lower cover 6.
The back glue 3 is arranged at the cavity positions of the module 2 and the PCB 4, the bulge of the back glue 3 is symmetrical with the position of the die hole on the surface of the module 2, and the module 2 and the PCB 4 can be tightly connected through the back glue 3.
It should be noted that, the invention is a keyboard using contact type heat-sensitive sensor as key, when in use, the heat-sensitive sensor is made by utilizing the junction resistance temperature characteristics of PN junction of heat-sensitive transistor 12, PN junction resistance is different at different temperatures, when the hand contacts the key, the heat-sensitive sensor senses the surface temperature to change, at the moment, the resistance value of PN junction is changed, the change of resistance can be converted into voltage signal by a bridge circuit or a simpler voltage dividing circuit, and IC can judge that the corresponding key has been pressed by the voltage signal, thus completing the key input function, in order to match with different finger temperatures under different environments, improving the input accuracy, so that a finger temperature calibration area is arranged on the right side of the keyboard, the finger temperature is calibrated on the right side of the keyboard by pressing the finger, and the keyboard can automatically adjust the threshold value (i.e. control temperature value) of the key temperature detection according to the current hand temperature through the calibration, thereby avoiding the risk of false input or no input.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The keyboard using the contact type heat-sensitive sensor as a key comprises an upper cover (1), and is characterized in that: the bottom of the upper cover (1) is clamped with a module (2), one side of the surface of the module (2) is provided with a temperature calibration area (10), the temperature calibration area (10) is used for calibrating the temperature of a human hand pressed above the temperature calibration area, and the keyboard automatically adjusts the threshold value of key temperature detection according to the current human hand temperature;
the utility model discloses a thermal insulation module for a solar cell module, including module (2), back of body glued (3), protruding and module (2) surface embedding has pilot lamp (11), the fixed surface of pilot lamp (11) is connected with lamp shade (9), the bottom of module (2) bonds there is gum (3), gum (3) set up in the cavity position of module (2) and PCB board (4), the protruding die orifice position mutual symmetry on module (2) surface of gum (3), the bottom bonding of gum (3) has PCB board (4), the fixed surface of PCB board (4) is connected with thermistor (12), the bottom fixedly connected with iron plate (5) of PCB board (4), the bottom fixedly connected with lower cover (6) of iron plate (5), the bottom of lower cover (6) is provided with callus on the sole (7), one side fixedly connected with USB connecting wire (8) of upper cover (1).
2. A keyboard using a touch-sensitive sensor as a key according to claim 1, wherein: the thermosensitive transistor (12) is a thermosensitive sensor manufactured by adopting junction resistance temperature characteristics of a PN junction of the thermosensitive diode, and the thermosensitive transistor (12) is made of a silicon triode.
3. A keyboard using a touch-sensitive sensor as a key according to claim 1, wherein: the plurality of thermosensitive transistors (12) are arranged, and the plurality of thermosensitive transistors (12) are symmetrically connected with key die holes of the module (2).
4. A keyboard using a touch-sensitive sensor as a key according to claim 1, wherein: the output end of the USB connecting wire (8) is electrically connected with the input end of the PCB (4) through the connecting wire.
5. A keyboard using a touch-sensitive sensor as a key according to claim 1, wherein: the lower cover (6) is made of polyethylene fiber materials, an activated carbon adsorption layer is embedded around the bottom of the lower cover (6), and the thickness of the activated carbon adsorption layer at the bottom of the lower cover (6) is 0.3-0.8cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811643835.3A CN109828676B (en) | 2018-12-29 | 2018-12-29 | Keyboard using contact type heat-sensitive sensor as key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811643835.3A CN109828676B (en) | 2018-12-29 | 2018-12-29 | Keyboard using contact type heat-sensitive sensor as key |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109828676A CN109828676A (en) | 2019-05-31 |
| CN109828676B true CN109828676B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811643835.3A Active CN109828676B (en) | 2018-12-29 | 2018-12-29 | Keyboard using contact type heat-sensitive sensor as key |
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| Country | Link |
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| CN (1) | CN109828676B (en) |
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| TWM246788U (en) * | 2003-12-12 | 2004-10-11 | Mitac Technology Corp | Thermal-sensitive text input device and input key unit |
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| KR100840620B1 (en) * | 2006-12-29 | 2008-06-24 | (주) 프렉코 | Keypad process for portable appliance |
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| CN101882017A (en) * | 2009-05-08 | 2010-11-10 | 瑞鼎科技股份有限公司 | Input device and input method |
| CN105677048A (en) * | 2014-11-21 | 2016-06-15 | 联想(北京)有限公司 | Electronic equipment and information processing method |
| CN106909229A (en) * | 2017-02-24 | 2017-06-30 | 广州幻境科技有限公司 | A kind of distribution type fiber-optic keyboard and its key detecting method |
| CN207232901U (en) * | 2017-10-10 | 2018-04-13 | 深圳市德丰源科技有限公司 | A kind of bluetooth keyboard that mobile phone wireless charging is supplied equipped with wireless charging base |
| CN208224998U (en) * | 2018-05-07 | 2018-12-11 | 深圳市恒怡多精彩科技有限公司 | Keyboard with air-cleaning function |
| CN209543282U (en) * | 2018-12-29 | 2019-10-25 | 深圳市恒怡多精彩科技有限公司 | A kind of keyboard using contact heat-sensitive sensor as key |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200921460A (en) * | 2007-11-02 | 2009-05-16 | Wistron Corp | Keyboard structure with a keyboard input function and a sensor pad input function |
| CN103576956B (en) * | 2012-07-31 | 2016-08-24 | 宸鸿科技(厦门)有限公司 | Temperature induction type contact panel and manufacture method thereof and method for detecting |
| US9293278B2 (en) * | 2014-01-07 | 2016-03-22 | Synaptics Incorporated | Two part key cap for use in keyboard keys and methods for their manufacture |
| US20160364572A1 (en) * | 2015-06-15 | 2016-12-15 | International Business Machines Corporation | Input device for preventing password theft by thermal imaging |
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2018
- 2018-12-29 CN CN201811643835.3A patent/CN109828676B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM246788U (en) * | 2003-12-12 | 2004-10-11 | Mitac Technology Corp | Thermal-sensitive text input device and input key unit |
| CN2874617Y (en) * | 2005-12-14 | 2007-02-28 | 上海环达计算机科技有限公司 | Induction type literal symbol input device and its input press key unit |
| CN101207647A (en) * | 2006-12-20 | 2008-06-25 | 乐金电子(中国)研究开发中心有限公司 | Mobile communication terminal of heat-sensitive key mode |
| KR100840620B1 (en) * | 2006-12-29 | 2008-06-24 | (주) 프렉코 | Keypad process for portable appliance |
| CN101882017A (en) * | 2009-05-08 | 2010-11-10 | 瑞鼎科技股份有限公司 | Input device and input method |
| CN105677048A (en) * | 2014-11-21 | 2016-06-15 | 联想(北京)有限公司 | Electronic equipment and information processing method |
| CN106909229A (en) * | 2017-02-24 | 2017-06-30 | 广州幻境科技有限公司 | A kind of distribution type fiber-optic keyboard and its key detecting method |
| CN207232901U (en) * | 2017-10-10 | 2018-04-13 | 深圳市德丰源科技有限公司 | A kind of bluetooth keyboard that mobile phone wireless charging is supplied equipped with wireless charging base |
| CN208224998U (en) * | 2018-05-07 | 2018-12-11 | 深圳市恒怡多精彩科技有限公司 | Keyboard with air-cleaning function |
| CN209543282U (en) * | 2018-12-29 | 2019-10-25 | 深圳市恒怡多精彩科技有限公司 | A kind of keyboard using contact heat-sensitive sensor as key |
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| Publication number | Publication date |
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| CN109828676A (en) | 2019-05-31 |
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Effective date of registration: 20240313 Address after: 246006 Room 101, 1st Floor, Building B3, Innovation Industrial Park, Daqiao Street, Yixiu District, Anqing City, Anhui Province Applicant after: Anqing Hengyiduomian Technology Co.,Ltd. Country or region after: Zhong Guo Address before: 518000, 21F, Jiayu Building, Songgang Street, Bao'an District, Shenzhen, Guangdong Province Applicant before: SHENZHEN DOKING ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region before: Zhong Guo |
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