CN203465706U - Data conversion device for capacitive touch screen - Google Patents
Data conversion device for capacitive touch screen Download PDFInfo
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- CN203465706U CN203465706U CN201320581682.0U CN201320581682U CN203465706U CN 203465706 U CN203465706 U CN 203465706U CN 201320581682 U CN201320581682 U CN 201320581682U CN 203465706 U CN203465706 U CN 203465706U
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Abstract
The utility model provides a data conversion device for a capacitive touch screen. The data conversion device comprises a control unit, a serial port communication unit and a power supply unit for supplying power to the control unit and the serial port communication unit; the control unit receives and stores the touch data transmitted by the capacitive touch screen, and meanwhile transmits the touch data to the serial port communication unit; the serial port communication unit converts the touch data into first touch data conforming to a set format, and sends the first touch data to external equipment so as to control the external equipment. The data conversion device has the benefit of being capable of bringing the functions of the capacitive touch screen into full play.
Description
Technical field
The utility model relates to touch-screen field, particularly a kind of capacitive touch screen DTU (Data Transfer unit).
Background technology
Capacitive touch screen is at glass surface, to stick particulate metal conductive materials of layer of transparent.When finger touch is on metal level, the electric capacity of contact will change, and the oscillator frequency being attached thereto is changed, and by survey frequency, is changed and can be determined touch location acquired information.In prior art, the data communication method that capacitive touch screen is used is II2C agreement communication modes, and when the inside of its external device of controlling does not contain II2C agreement (as PC), at this moment, capacitive touch screen can not be given full play to its effect.
Utility model content
The technical problems to be solved in the utility model is, can not give full play to the defect of its effect for the above-mentioned capacitive touch screen of prior art, and a kind of capacitive touch screen DTU (Data Transfer unit) that can give full play to its effect is provided.
The utility model solves the technical scheme that its technical matters adopts: construct a kind of capacitive touch screen DTU (Data Transfer unit), comprise control module, serial communication unit and for the power supply unit to described control module and the power supply of serial communication unit; Described control module receives and preserves the touch data that described capacitive touch screen transmits, described touch data is sent to described serial communication unit simultaneously, described serial communication unit converts described touch data to meet the first touch data of setting form to, and described the first touch data is sent to external equipment to control described external equipment.
In capacitive touch screen DTU (Data Transfer unit) described in the utility model, described setting form is any one protocol format in RS232 agreement, RS485 agreement, SPI agreement, usb protocol or PS2 agreement.
In capacitive touch screen DTU (Data Transfer unit) described in the utility model, described serial communication unit comprises serial port communication chip, data transformation interface and data output; Described serial port communication chip receives described touch data and sends it to data transformation interface, described data transformation interface converts described touch data to the first touch data that meets described setting form, and described the first touch data is sent to described external equipment by described data output.
In capacitive touch screen DTU (Data Transfer unit) described in the utility model, described control module comprises single-chip microcomputer, in described single-chip microcomputer, is provided with watchdog circuit.
In capacitive touch screen DTU (Data Transfer unit) described in the utility model, described control module also comprises crystal oscillator, the tenth electrochemical capacitor and the 11 electrochemical capacitor, the 4th pin of described single-chip microcomputer is connected with the positive pole of the tenth electrochemical capacitor with one end of described crystal oscillator respectively, the other end of described crystal oscillator is connected with the positive pole of described the 11 electrochemical capacitor, and the negative pole of described the tenth electrochemical capacitor is connected altogether with the negative pole of the 11 electrochemical capacitor.
In capacitive touch screen DTU (Data Transfer unit) described in the utility model, described control module also comprises burning mouth, and the second port of described burning mouth, the 4th port are connected with the 3rd pin, second pin of described single-chip microcomputer respectively.
In capacitive touch screen DTU (Data Transfer unit) described in the utility model, described power supply unit comprises the voltage stabilizer for input voltage is converted to setting voltage and carries out voltage stabilizing.
In capacitive touch screen DTU (Data Transfer unit) described in the utility model, described external equipment is that mobile phone, PC, panel computer or KTV touch song-order machine.
Implement capacitive touch screen DTU (Data Transfer unit) of the present utility model, there is following beneficial effect: owing to using control module and serial communication unit, control module receives and preserves the touch data that capacitive touch screen transmits, touch data is sent to serial communication unit simultaneously, serial communication unit converts touch data to meet the first touch data of setting form to, and the first touch data is sent to external equipment to control external equipment.So just touch data has been converted to and met the first touch data that external equipment receives protocol format, make capacitive touch screen give full play to its effect, and while no longer not containing II2C communications protocol interface as external equipment in prior art, it is utterly useless that capacitive touch screen seems.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structured flowchart in embodiment of the utility model capacitive touch screen DTU (Data Transfer unit);
Fig. 2 is the circuit theory diagrams of capacitive touch screen in described embodiment;
Fig. 3 is the circuit theory diagrams of control module in described embodiment;
Fig. 4 is the circuit theory diagrams of serial communication unit in described embodiment;
Fig. 5 is the circuit theory diagrams of power supply unit in described embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
In the utility model capacitive touch screen DTU (Data Transfer unit) embodiment, the structured flowchart of its device as shown in Figure 1.In Fig. 1, this capacitive touch screen DTU (Data Transfer unit) comprises control module 1, serial communication unit 2 and power supply unit 3, and power supply unit 3 is for powering to control module 1 and serial communication unit 2.In the present embodiment, drawn respectively capacitive touch screen 01 and external equipment 02 in Fig. 1, but this capacitive touch screen interference preventer does not comprise capacitive touch screen 01 and external equipment 02, in Fig. 1, being drawn is for convenience of description.Control module 1 receives and preserves the touch data that capacitive touch screen transmits, touch data is sent to serial communication unit 2 simultaneously, serial communication unit 2 converts touch data to meet the first touch data of setting form to, and the first touch data is sent to external equipment 02 to control external equipment 02.It is worth mentioning that, the touch data of reception is the data of II2C protocol format, and above-mentioned setting form is any one protocol format in RS232 agreement, RS485 agreement, SPI agreement, usb protocol or PS2 agreement.Certainly, according to the difference of external equipment, select corresponding agreement.Above-mentioned external equipment is that mobile phone, PC, panel computer or KTV touch song-order machine etc.
In the present embodiment, when external equipment 02 is PC, capacitive touch screen 01 detects touch information, touch data will be passed to control module 1, the touch data that control module 1 record is received, and touch data is carried out to communication with PC after the serial communication unit 2 of PC is processed, thereby reach the object of controlling external equipment 02.
Fig. 2 is the circuit theory diagrams of capacitive touch screen in the present embodiment.In Fig. 2, J1 capacitive touch screen Data Input Interface, R1 is exclusion, uses exclusion can save circuit board space, reduces costs.
Fig. 3 is the circuit theory diagrams of control module in the present embodiment, in Fig. 3, control module 1 comprises Chip Microcomputer A 8, control module also comprises crystal oscillator Y1, the tenth electrochemical capacitor C10 and the 11 electrochemical capacitor C11, the 4th pin of Chip Microcomputer A 8 is connected with the positive pole of the tenth electrochemical capacitor C10 with one end of crystal oscillator Y1 respectively, the other end of crystal oscillator Y1 is connected with the positive pole of the 11 electrochemical capacitor C11, and the negative pole of the tenth electrochemical capacitor C10 is connected altogether with the negative pole of the 11 electrochemical capacitor C11.
In the present embodiment, control module 1 also comprises burning mouth J7, and the second port of burning mouth J7, the 4th port are connected with the 3rd pin, second pin of Chip Microcomputer A 8 respectively.
In the present embodiment, in Chip Microcomputer A 8, be provided with watchdog circuit (not shown), further solved the phenomenon that Chip Microcomputer A 8 crashes.When watchdog circuit is set, in setting-up time, not feeding dog will reset to Chip Microcomputer A 8, to prevent that Chip Microcomputer A 8 from crashing.In the present embodiment, setting-up time is 0.8789ms, in other embodiments, and size that as the case may be can corresponding adjustment setting-up time.Chip Microcomputer A 8 is preserved the touch data of reception, and the data of preserving in set point number are when identical, control is restarted capacitive touch screen, so just do not need to restart by capacitive touch screen 01 by pulling out power supply, so save time with manpower, to use, brought very large convenience.In the present embodiment, set point number is 3 times, certainly, in other embodiments, value that according to specific needs can corresponding adjustment set point number.
Fig. 4 is the circuit theory diagrams of serial communication unit in the present embodiment, and in Fig. 4, serial communication unit 2 comprises serial port communication chip A9, data transformation interface A7 and data output P1; Serial port communication chip A9 receives touch data and sends it to data transformation interface A7, data transformation interface A7 converts touch data to the first touch data that meets above-mentioned setting form, and the first touch data is sent to external equipment 02 by data output P1, thereby reach the object of controlling external equipment.In external equipment 02, the first touch data is processed into after coordinate figure, the display that is sent to external equipment 02 shows.Capacitive touch screen DTU (Data Transfer unit) has expanded the usable range of capacitive touch screen 01, can promote development and the production of capacitive touch screen 01.
Fig. 5 is the circuit theory diagrams of power supply unit in the present embodiment, and in Fig. 5, power supply unit 3 provides power supply VCC, and power supply unit 3 comprises voltage stabilizer, for input voltage VIN being converted to setting voltage (being power supply VCC) and carrying out voltage stabilizing.Power supply VCC is to capacitive touch screen 01, control module 1 and 2 power supplies of serial communication unit.
In a word, in the present embodiment, this capacitive touch screen DTU (Data Transfer unit) is provided with II2C communication interface, serial port communication chip A9 and coordinates the finish dealing with reception of touch data of Chip Microcomputer A 8, the touch data receiving from II2C communications protocol is converted to the first touch data that external equipment (as PC) can the identify data of RS232, RS485, SPI, USB or PS2 protocol format (as meet), thereby completes better the transmission to the touch data of capacitive touch screen.In addition, capacitive touch screen DTU (Data Transfer unit) small volume of the present utility model, is convenient to embedded and installs.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a capacitive touch screen DTU (Data Transfer unit), is characterized in that, comprises control module, serial communication unit and for the power supply unit to described control module and the power supply of serial communication unit; Described control module receives and preserves the touch data that described capacitive touch screen transmits, described touch data is sent to described serial communication unit simultaneously, described serial communication unit converts described touch data to meet the first touch data of setting form to, and described the first touch data is sent to external equipment to control described external equipment.
2. capacitive touch screen DTU (Data Transfer unit) according to claim 1, is characterized in that, described setting form is any one protocol format in RS232 agreement, RS485 agreement, SPI agreement, usb protocol or PS2 agreement.
3. capacitive touch screen DTU (Data Transfer unit) according to claim 2, is characterized in that, described serial communication unit comprises serial port communication chip, data transformation interface and data output; Described serial port communication chip receives described touch data and sends it to data transformation interface, described data transformation interface converts described touch data to the first touch data that meets described setting form, and described the first touch data is sent to described external equipment by described data output.
4. according to the capacitive touch screen DTU (Data Transfer unit) described in claims 1 to 3 any one, it is characterized in that, described control module comprises single-chip microcomputer, in described single-chip microcomputer, is provided with watchdog circuit.
5. capacitive touch screen DTU (Data Transfer unit) according to claim 4, it is characterized in that, described control module also comprises crystal oscillator, the tenth electrochemical capacitor and the 11 electrochemical capacitor, the 4th pin of described single-chip microcomputer is connected with the positive pole of the tenth electrochemical capacitor with one end of described crystal oscillator respectively, the other end of described crystal oscillator is connected with the positive pole of described the 11 electrochemical capacitor, and the negative pole of described the tenth electrochemical capacitor is connected altogether with the negative pole of the 11 electrochemical capacitor.
6. capacitive touch screen DTU (Data Transfer unit) according to claim 5, is characterized in that, described control module also comprises burning mouth, and the second port of described burning mouth, the 4th port are connected with the 3rd pin, second pin of described single-chip microcomputer respectively.
7. capacitive touch screen DTU (Data Transfer unit) according to claim 6, is characterized in that, described power supply unit comprises the voltage stabilizer for input voltage is converted to setting voltage and carries out voltage stabilizing.
8. capacitive touch screen DTU (Data Transfer unit) according to claim 7, is characterized in that, described external equipment is that mobile phone, PC, panel computer or KTV touch song-order machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581682.0U CN203465706U (en) | 2013-09-21 | 2013-09-21 | Data conversion device for capacitive touch screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581682.0U CN203465706U (en) | 2013-09-21 | 2013-09-21 | Data conversion device for capacitive touch screen |
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| CN203465706U true CN203465706U (en) | 2014-03-05 |
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| CN201320581682.0U Expired - Lifetime CN203465706U (en) | 2013-09-21 | 2013-09-21 | Data conversion device for capacitive touch screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505970A (en) * | 2019-01-31 | 2020-08-07 | 厦门雅迅网络股份有限公司 | Self-recovery system and method for vehicle-mounted remote display screen |
-
2013
- 2013-09-21 CN CN201320581682.0U patent/CN203465706U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111505970A (en) * | 2019-01-31 | 2020-08-07 | 厦门雅迅网络股份有限公司 | Self-recovery system and method for vehicle-mounted remote display screen |
| CN111505970B (en) * | 2019-01-31 | 2024-03-15 | 厦门雅迅网络股份有限公司 | Self-recovery system and method for vehicle-mounted remote display screen |
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