CN204229353U - A kind of hand-held universal input device being applied to panzer borne computer - Google Patents
A kind of hand-held universal input device being applied to panzer borne computer Download PDFInfo
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- CN204229353U CN204229353U CN201420708588.1U CN201420708588U CN204229353U CN 204229353 U CN204229353 U CN 204229353U CN 201420708588 U CN201420708588 U CN 201420708588U CN 204229353 U CN204229353 U CN 204229353U
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Abstract
The utility model discloses a kind of hand-held universal input device, comprising: keyboard circuit, is 3*7 rank scanning keyboard, can realize singly-bound and multikey combination press; Keyboard coding and interface communication circuitry, be solidified with system type key assignments table, exports the serial data of the corresponding key assignments received according to system type key assignments table; Level conversion and protection circuit, the serial data for corresponding key assignments keyboard coding and interface communication circuitry exported is converted to the serial data of the RS232 level of standard, and realizes protecting the anti-surge voltage of external port; Power-switching circuit, for by+11V the signal voltage transitions on rs 232 serial interface signal line being the+3.3V D.C. regulated power supply in hand-held universal input device needed for other each modules; Described external interface is RS232 rs 232 serial interface signal line interface, for the serial data transmission of the RS232 level by described standard to panzer borne computer.This hand-held universal input device effectively can solve in armored vehicle vehicle pitching the problem inputting difficulty.
Description
Technical field
The utility model belongs to computer input technology field, more specifically, relates to a kind of hand-held universal input device being applied to panzer borne computer.
Background technology
Keyboard interface general at present mainly comprises PS2 interface and USB interface, and key mapping is 84 keys or 104 keys, is realized the detection of button and the output of keypad code by keyboard coding chip.But under the applied environment of panzer borne computer, when armored vehicle board vehicle pitching state, there is the situation of input inconvenience in the keyboard of traditional 84 keys or 104 keys.
Utility model content
For above defect or the Improvement requirement of prior art, the utility model provides a kind of hand-held universal input device being applied to panzer borne computer, there is the problem of input inconvenience for the keyboard that solves traditional 84 keys or 104 keys when armored vehicle board vehicle pitching state.
The utility model provides a kind of hand-held universal input device being applied to panzer borne computer; described hand-held universal input device comprises keyboard circuit, keyboard coding and interface communication circuitry, level conversion and protection circuit, power-switching circuit; and external interface, wherein:
Described keyboard circuit is 3*7 rank scanning keyboard, can realize singly-bound and multikey combination press;
System type key assignments table is solidified with in described keyboard coding and interface communication circuitry, when after the button operation receiving keyboard circuit, described keyboard coding and interface communication circuitry export the serial data of corresponding key assignments according to system type key assignments table, and the format character of described serial data attaches together the serial data format of first truck-mounted computer;
Described level conversion and protection circuit, the serial data for corresponding key assignments keyboard coding and interface communication circuitry exported is converted to the serial data of the RS232 level of standard, and realizes protecting the anti-surge voltage of external port;
Described power-switching circuit, for by+11V the signal voltage transitions on rs 232 serial interface signal line being the+3.3V D.C. regulated power supply in hand-held universal input device needed for other each modules;
Described external interface is RS232 rs 232 serial interface signal line interface, is connected with described level conversion and protection circuit, for the serial data transmission of the RS232 level by described standard to panzer borne computer.
In an embodiment of the present utility model, described keyboard coding and interface communication circuitry are single-chip microcomputer, are solidified with system type key assignments table in single-chip microcomputer.
The hand-held universal input device of the utility model effectively can solve in armored vehicle vehicle pitching the problem inputting difficulty, improves the speed of Text Input, realizes keyboard miniaturization, reduces equipment and runs power consumption (typical power consumption: power supply 5V electric current 12mA; Contrast standard keyboard: power supply 5V electric current 100mA), can be widely applied on all kinds of panzer borne computer.
Accompanying drawing explanation
Fig. 1 is the hand-held universal input device electrical block diagram of the utility model;
Fig. 2 is hand-held universal input device outside drawing in the utility model one embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each embodiment of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
The hand-held universal input device of the utility model is powered by rs 232 serial interface signal line, according to the demand of panzer borne computer, simplified design is carried out to QWERTY keyboard key mapping, construction profile carries out small design, under jounce condition advanced by vehicle, realize singlehanded input fast, realize inputting message fast, accusing order.
The hand-held universal input device of the utility model is by detecting key presses, corresponding button value is converted to serial data by keyboard coding circuit, exported the break-make code of corresponding button by interface circuit, the break-make code of this button of truck-mounted computer serial ports identification, determine corresponding key-press input.
Particularly, as shown in Figure 1, the hand-held universal input device that the utility model is applied to panzer borne computer comprises keyboard circuit, keyboard coding and interface communication circuitry, level conversion and protection circuit, power-switching circuit, and external interface, wherein:
Described keyboard circuit is 3*7 rank scanning keyboard, can realize singly-bound and multikey combination press;
System type key assignments table is solidified with in described keyboard coding and interface communication circuitry, when after the button operation receiving keyboard circuit, described keyboard coding and interface communication circuitry export the serial data of corresponding key assignments according to system type key assignments table, and the format character of described serial data attaches together the serial data format of first truck-mounted computer;
Described level conversion and protection circuit, the serial data for keyboard coding and interface communication circuitry being exported is converted to the serial data of the RS232 level of standard, and realizes protecting the anti-surge voltage of external port;
Described power-switching circuit, for by+11V the signal voltage transitions on rs 232 serial interface signal line being the+3.3V D.C. regulated power supply in hand-held universal input device needed for other each modules;
Described external interface is RS232 rs 232 serial interface signal line interface, is connected with described level conversion and protection circuit, for the serial data transmission of the RS232 level by described standard to panzer borne computer.
As shown in Figure 2, be universal input device outside drawing hand-held in the utility model one embodiment, the Simple key board of this handheld input device profile 3*7, and there is RS232 serial line interface, panzer borne computer can be connected to.
By above-mentioned hand-held universal input device, according to truck-mounted computer keyboard system type key assignments table, hand-held universal input device carries out simplified design to key assignments, can realize following keypress function:
(1) upper and lower, left and right and OK button;
(2) numeral 0 ~ 9, the button such as punctuation mark;
(3) function key such as F1 ~ F9;
(4) truck-mounted computer special function keys.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. one kind is applied to the hand-held universal input device of panzer borne computer; it is characterized in that; described hand-held universal input device comprises keyboard circuit, keyboard coding and interface communication circuitry, level conversion and protection circuit, power-switching circuit, and external interface, wherein:
Described keyboard circuit is 3*7 rank scanning keyboard, can realize singly-bound and multikey combination press;
System type key assignments table is solidified with in described keyboard coding and interface communication circuitry, when after the button operation receiving keyboard circuit, described keyboard coding and interface communication circuitry export the serial data of corresponding key assignments according to system type key assignments table, and the format character of described serial data attaches together the serial data format of first truck-mounted computer;
Described level conversion and protection circuit, the serial data for corresponding key assignments keyboard coding and interface communication circuitry exported is converted to the serial data of the RS232 level of standard, and realizes protecting the anti-surge voltage of external port;
Described power-switching circuit, for by+11V the signal voltage transitions on rs 232 serial interface signal line being the+3.3V D.C. regulated power supply in hand-held universal input device needed for other each modules;
Described external interface is RS232 rs 232 serial interface signal line interface, is connected with described level conversion and protection circuit, for the serial data transmission of the RS232 level by described standard to panzer borne computer.
2. hand-held universal input device as claimed in claim 1, is characterized in that, described keyboard coding and interface communication circuitry are single-chip microcomputer, is solidified with system type key assignments table in single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708588.1U CN204229353U (en) | 2014-11-21 | 2014-11-21 | A kind of hand-held universal input device being applied to panzer borne computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708588.1U CN204229353U (en) | 2014-11-21 | 2014-11-21 | A kind of hand-held universal input device being applied to panzer borne computer |
Publications (1)
| Publication Number | Publication Date |
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| CN204229353U true CN204229353U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420708588.1U Active CN204229353U (en) | 2014-11-21 | 2014-11-21 | A kind of hand-held universal input device being applied to panzer borne computer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125945A (en) * | 2016-06-20 | 2016-11-16 | 贵州航天天马机电科技有限公司 | A kind of universal keyboard for vehicle-mounted cabinet |
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2014
- 2014-11-21 CN CN201420708588.1U patent/CN204229353U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125945A (en) * | 2016-06-20 | 2016-11-16 | 贵州航天天马机电科技有限公司 | A kind of universal keyboard for vehicle-mounted cabinet |
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