CN207457977U

CN207457977U - A kind of ultra-thin free drive moves embedded keyboard

Info

Publication number: CN207457977U
Application number: CN201721253128.4U
Authority: CN
Inventors: 滕辉
Original assignee: SHANGHAI HUANGPU MARINE INSTRUMENT CO Ltd
Current assignee: SHANGHAI HUANGPU MARINE INSTRUMENT CO Ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2018-06-05
Anticipated expiration: 2027-09-27

Abstract

The utility model is related to a kind of ultra-thin free drives to move embedded keyboard, and the connecting interface of keyboard is PS/2 plugs, and keyboard includes keyboard case and the keyboard film on keyboard case, further includes the microcontroller for connecting the keyboard film；Using reset key double bond series design, keyboard just sends warm reset signal to microcontroller when two reset keys are pressed simultaneously；Using enter key double bond Redundancy Design, any one in two enter keys can realize carriage return function.Compared with prior art, the utility model has saved inner space of cabinet and cabin spaces, it effectively prevents operating personnel's false touch reset key from causing system reset and accidental interruption equipment is caused to work, is used alternatingly by using two high enter keys of frequency, extends keyboard service life.

Description

A kind of ultra-thin free drive moves embedded keyboard

Technical field

The utility model is related to a kind of key board units, and embedded keyboard is moved more particularly, to a kind of ultra-thin free drive.

Background technology

Now, the keyboard of general industrial control equipment is generally all bigger, interface mostly using USB interface, be primarily present with Lower shortcoming：

1. volume is big, the more inner space of equipment can be occupied；

The keyboard of 2.USB interfaces needs under part operation system to install driver；

3. the ruggedized computer of old model does not have USB interface.

Membrane keyboard is an example of thin film switch scope, the more and neat and orderly thin film switch of button, and people practise It is used to be referred to as membrane keyboard.Membrane keyboard is that a kind of of international popular in recent years integrates a decorative behaviour with functionality Make system.Membrane keyboard good appearance, novelty, small, light-weight, leakproofness is strong.With moisture-proof, dust-proof, oil-stain-preventing, acidproof The features such as alkali, long antidetonation and service life.

Utility model content

The purpose of this utility model is exactly to provide a kind of ultra-thin free drive to overcome the problems of the above-mentioned prior art Move embedded keyboard.

The purpose of this utility model can be achieved through the following technical solutions：

A kind of ultra-thin free drive moves embedded keyboard, and the connecting interface of the keyboard is PS/2 plugs, and the keyboard includes key Disk casing and the keyboard film on keyboard case further include the microcontroller for connecting the keyboard film, the keyboard film Microcontroller is connected by latch.

Preferably, the microcontroller is SoC microcontrollers.

Preferably, the PS/2 plugs connect microcontroller by photoelectric isolated chip.

Preferably, the material of the keyboard case is super thin metal.

Preferably, the keyboard film includes number key, reset key, function key, key position, start button, end key, deletion Key and enter key.

Preferably, the quantity of the reset key is 2, and 2 reset keys are connected in series.

Preferably, the quantity of the enter key is 2, and 2 enter keys are connected in parallel.

Preferably, the number key includes ten key, decimal key and whippletree key.

Preferably, the key position includes upper and lower, left and right key.

Compared with prior art, the utility model has the following advantages：

1st, using high integration microcontroller and ultra-thin keyboard shape, this keyboard can be embedded into any of cabinet in cabin On position, pumping board or device housings, inner space of cabinet and cabin spaces have been saved.

2nd, using reset key double bond series design, after preventing operating personnel's false touch reset key, system reset is caused, in accident Disconnected equipment work.

3rd, using enter key double bond Redundancy Design, any one in two enter keys can realize carriage return function, make Obtaining the high enter key of frequency of use can be used alternatingly, and extend the service life of entire keyboard.

4th, because almost all of ruggedized computer, model supports PS/2 interfaces regardless of new former capital, so this keyboard is almost All ruggedized computers are applicable in, it is applied widely.

5th, keyboard uses PS/2 interfaces, can directly be used without any driver is installed, reduces the set-up time And step, increase the adaptability of keyboard.

Description of the drawings

Fig. 1 is the appearance schematic diagram of the utility model keyboard film；

Fig. 2 is the utility model overall structure diagram；

Fig. 3 is utility model works principle flow chart.

It is marked in figure：0~9, number key, 11, keyboard case, 12, keyboard film, 13, PS/2 plugs, 14, microcontroller, 15th, latch, 16, photoelectric isolated chip.

Specific embodiment

The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model Implemented premised on technical solution, give detailed embodiment and specific operating process, but the guarantor of the utility model Shield scope is not limited to following embodiments.

Embodiment one

As shown in Figure 1, a kind of ultra-thin free drive moves embedded keyboard, for the data inputting of ship equipment, including keyboard outside Shell 11 and the keyboard film 12 on keyboard case 11 further include the microcontroller 14 of connection keyboard film 12.Keyboard case 11 Material for super thin metal, metal shell intensity is big, is unlikely to deform, and heat dissipation performance might as well.In the present embodiment, keyboard film 12 pastes On keyboard case 11, for input data, the key assignments of input is standard ASCII character.A piece PS/2 plug 13 is out of keyboard It draws, for being connected with ruggedized computer, which uses aviation plug, ensure that the reliability of connection.

Because using ultra-thin appearance design, keyboard can be embedded in cabinet shell surface or embedded pumping board, out of cabinet Extraction uses.

As shown in Fig. 2, keyboard film 12 connects microcontroller 14 by latch 15.Microcontroller 14 is highly integrated using low-power consumption Spend SoC microcontrollers.With the continuous development of modern chips manufacturing process, the processing procedure of chip has had evolved to 14 nanometers, power consumption More and more lower, caloric value is also less and less.The integrated level of chip is also higher and higher, and the microcontroller 14 that this keyboard uses is integrated with The units such as CPU, RAM, flash storage, communication controler.Therefore, the area that circuit occupies is very small, and caloric value is also very It is small.

After pressing the button on keyboard film 12, microcontroller 14 is sent to after the latched device 15 of coding of button.Then it is single The ASCII character of button is sent to ruggedized computer by piece machine 14 by PS/2 interfaces.

PS/2 plugs 1 connect microcontroller 14 by photoelectric isolated chip 16, prevent overtension, damage keyboard.

Keyboard is simplified, the button that retention data input has to associated device operations reduces Keyboard area has saved inner space of cabinet and cabin spaces.Keyboard film 12 includes number key, reset key, function key, orientation Key, start button, end key, delete key and enter key.The quantity of reset key is 2, using double bond series design, two reset keys When being pressed simultaneously, keyboard just sends warm reset signal to microcontroller 14.Rule of thumb, enter key makes during equipment use High more than the frequency of use of other buttons with frequency, wear and aging is fast, therefore uses enter key double bond Redundancy Design, two carriage returns Any one in key can realize carriage return function, extend the service life of entire keyboard.Number key includes 0~9 number Key, decimal key and whippletree key.Key position includes upper and lower, left and right key.Advantage is as follows：

Keyboard software program is designed using C language, C language mature and reliable, and real-time is splendid.

As shown in figure 3, the operation principle of keyboard is：Microcontroller 14 reads the volume for the button that membrane keyboard is pressed from parallel port Code, embedded software first determine whether that reset key is pressed, if it is, it is soft multiple to send Ctrl+Alt+Del toward PS/2 interfaces The keyboard-coding received, is otherwise changed into ASCII character, ruggedized computer is sent to by PS/2 interfaces by position signal.

Since keyboard is adopted international standards PS/2 interface specifications, if so ruggedized computer has a PS/2 interfaces, no matter type It is number new and old to use.Also, since almost all of computer bottom BIOS system all supports PS/2 interface keyboards, institute It, can normal use without any driving is installed after being connected to ruggedized computer with this keyboard.

Claims

1. a kind of ultra-thin free drive moves embedded keyboard, which is characterized in that the connecting interface of the keyboard be PS/2 plugs, the key Disk includes keyboard case and the keyboard film on keyboard case, further includes the microcontroller for connecting the keyboard film, described Keyboard film connects microcontroller by latch.

2. a kind of ultra-thin free drive according to claim 1 moves embedded keyboard, which is characterized in that the microcontroller is SoC Microcontroller.

3. a kind of ultra-thin free drive according to claim 1 moves embedded keyboard, which is characterized in that the PS/2 plugs pass through Photoelectric isolated chip connects microcontroller.

4. a kind of ultra-thin free drive according to claim 1 moves embedded keyboard, which is characterized in that the material of the keyboard case Expect for super thin metal.

5. a kind of ultra-thin free drive according to claim 1 moves embedded keyboard, which is characterized in that the keyboard film includes Number key, reset key, function key, key position, start button, end key, delete key and enter key.

6. a kind of ultra-thin free drive according to claim 5 moves embedded keyboard, which is characterized in that the quantity of the reset key For 2,2 reset keys are connected in series.

7. a kind of ultra-thin free drive according to claim 5 moves embedded keyboard, which is characterized in that the quantity of the enter key For 2,2 enter keys are connected in parallel.

8. a kind of ultra-thin free drive according to claim 5 moves embedded keyboard, which is characterized in that the number key includes 0 ~9 number keys, decimal key and whippletree key.

9. a kind of ultra-thin free drive according to claim 5 moves embedded keyboard, which is characterized in that the key position includes Upper and lower, left and right key.