CN208737451U - A kind of industrial personal computer key control circuit and industrial personal computer - Google Patents
A kind of industrial personal computer key control circuit and industrial personal computer Download PDFInfo
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- CN208737451U CN208737451U CN201821607784.4U CN201821607784U CN208737451U CN 208737451 U CN208737451 U CN 208737451U CN 201821607784 U CN201821607784 U CN 201821607784U CN 208737451 U CN208737451 U CN 208737451U
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- personal computer
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- watchdog timer
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Abstract
The utility model provides a kind of industrial personal computer key control circuit and industrial personal computer, wherein industrial personal computer key control circuit, including processor U1, touch key S1 and WatchDog Timer chip U2；The first end of touch key S1 is divided into three tunnels, and the first via is connected to DC power supply by resistance R1, and the second tunnel is connected to processor U1, and third road is connected to the base stage of triode Q1；The second end of touch key S1 is connected to ground wire；The emitter of triode Q1 is connected to DC power supply；The collector of triode Q1 is connected to the power input of WatchDog Timer chip U2；The output end of WatchDog Timer chip U2 is connected to the base stage of triode Q2；The emitter of triode Q2 is connected to processor U1.Industrial personal computer key control circuit provided by the utility model, touch key S1 can be realized the triggering of two kinds of distinct program functions, enrich the function of touch key S1 under two kinds of situations of short-press and long-pressing.
Description
Technical field
The utility model relates to industrial personal computer field, in particular to a kind of industrial personal computer key control circuit and industrial personal computer.
Background technique
Industrial personal computer is a kind of using bus structures, carries out Detection & Controling to production process and electromechanical equipment, technological equipment
A kind of professional application type computer.Industrial personal computer have important computer attribute and feature, such as have processor, hard disk,
Memory, peripheral hardware and interface.The wherein equipment that display screen and key are output and input as signal is essential on industrial personal computer
Peripheral hardware；And small-sized industrial personal computer, display screen and key are generally located on the same face, and the key on existing industrial personal computer
Single input function, generally requires multiple keys are arranged on industrial personal computer and is just able to satisfy basic input function, is unfavorable for industry control
The integration and miniaturization of machine.
Utility model content
To solve the above-mentioned deficiency mentioned in the prior art, the utility model provides a kind of industrial personal computer key control circuit,
Including processor U1, touch key S1 and WatchDog Timer chip U2；
The first end of the touch key S1 is divided into three tunnels, and the first via is connected to DC power supply, the second tunnel by resistance R1
It is connected to the processor U1, third road is connected to the base stage of triode Q1；The second end of the touch key S1 is connected to the ground
Line；The emitter of the triode Q1 is connected to DC power supply；The collector of the triode Q1 is connected to WatchDog Timer
The power input of chip U2；
The input terminal of the WatchDog Timer chip U2 is connected to the processor U1；The WatchDog Timer chip
The output end of U2 is connected to the base stage of triode Q2；The collector of the triode Q2 is connected to ground wire；The triode Q2's
Emitter is divided into two-way, is connected to DC power supply by resistance R2 all the way, and another way is connected to the processor U1.
Further, the triode Q1 and triode Q2 is PNP type triode.
Further, the model MCIMX6Q6AVT10AC of the processor U1.
Further, the model UCC3946 of WatchDog Timer chip U2.
The utility model also provides a kind of industrial personal computer, including several touch keys, one or more described touch key
It is controlled using described in any item industrial personal computer key control circuits as above.
Industrial personal computer key control circuit provided by the utility model is passed through simultaneously by the way that WatchDog Timer chip is arranged
Touch key S1 controls the current supply circuit of WatchDog Timer chip, so that touch key S1 is in two kinds of situations of short-press and long-pressing
Under, it can be realized the triggering of two kinds of distinct program functions, enrich the function of touch key S1；Using provided by the utility model
Industrial personal computer key control circuit is able to use less key and realizes the input of more functions, so that reducing needs on industrial personal computer
Number of keys to be used, conducive to the integration and miniaturization of industrial personal computer.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of circuit connection diagram of industrial personal computer key control circuit provided by the utility model.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
" first ", " second " used in the utility model embodiment and similar word be not offered as any sequence,
Quantity or importance, and be only intended to distinguish different component parts.The similar word such as " one end ", " other end ", simply means to
The orientation or positional relationship of showing device or element is is based on the orientation or positional relationship shown in the drawings, rather than indication or suggestion institute
The device or element of finger must have a particular orientation, be constructed and operated in a specific orientation.The classes such as " comprising " or "comprising"
Like word mean the element before the word or object out cover appear in the word presented hereinafter element or object and its
It is equivalent, and it is not excluded for other elements or object." connection " either the similar word such as " connected " is not limited to physics or machine
The connection of tool, but may include electrical connection, it is either direct or indirect.
Fig. 1 is a kind of circuit connection diagram of industrial personal computer key control circuit provided by the embodiment of the utility model；Such as
Shown in Fig. 1, industrial personal computer key control circuit provided by the utility model, including processor U1, touch key S1 and house dog are determined
When device chip U2；
The first end of the touch key S1 is divided into three tunnels, and the first via is connected to DC power supply, the second tunnel by resistance R1
It is connected to the processor U1, third road is connected to the base stage of triode Q1；The second end of the touch key S1 is connected to the ground
Line；The emitter of the triode Q1 is connected to DC power supply；The collector of the triode Q1 is connected to WatchDog Timer
The power input of chip U2；
The input terminal of the WatchDog Timer chip U2 is connected to the processor U1；The WatchDog Timer chip
The output end of U2 is connected to the base stage of triode Q2；The collector of the triode Q2 is connected to ground wire；The triode Q2's
Emitter is divided into two-way, is connected to DC power supply by resistance R2 all the way, and another way is connected to the processor U1.
When it is implemented, as shown in Figure 1, industrial personal computer key control circuit provided by the utility model, including processor U1,
Touch key S1 and WatchDog Timer chip U2；In the utility model embodiment, the model of processor U1 selection
The model that the model UCC3946 that MCIMX6Q6AVT10AC, WatchDog Timer chip U2 are selected, touch key S1 are selected
SW TACT-SPST；
The first end of touch key S1 is connected to DC power supply (i.e. VDD shown in Fig. 1) by resistance R1, preferably,
The resistance value of resistance R1 is 4.7K Ω；The first end of touch key S1 is further connected to the base stage and processor U1 of triode Q1
Input port SD3_DAT0；Preferably, the first end of touch key S1, which also passes through capacitor C1, is connected to ground wire；Touch key S1's
Second end is connected to ground wire.Triode Q1 is PNP type triode, and the base stage of triode Q1 is connected with the first end of touch key S1
It connects, the emitter of triode Q1 is connected to DC power supply, and the collector of triode Q1 is connected to WatchDog Timer chip U2's
Power input, i.e. the 8th pin of WatchDog Timer chip U2.
The 7th pin of WatchDog Timer chip U2 is the input terminal of WatchDog Timer chip U2, WatchDog Timer
The input terminal of chip U2 is connected with an output port of processor U1, and processor U1 is defeated to WatchDog Timer chip U2's
Enter to hold counting of the input pulse signal for timer；The 5th pin of WatchDog Timer chip U2 is WatchDog Timer core
The output end of the output end of piece U2, WatchDog Timer chip U2 is connected with the base stage of triode Q2；Triode Q2 is positive-negative-positive
Triode；The collector of triode Q2 is connected to ground wire, and the emitter of triode Q2 is divided into two-way, is connected all the way by resistance R2
To DC power supply, another way is connected to the input port SD3_DAT1 of processor U1.
Industrial personal computer key control circuit provided by the embodiment of the utility model, in actual work: when touch key S1 not
When being pressed, the input port SD3_DAT0 input voltage of processor U1 is the voltage of DC power supply, i.e. processor U1 input terminal
Mouth SD3_DAT0 detects high level signal；Triode Q1 is in off state at this time, and WatchDog Timer chip U2 is without electricity
Source input does not work, and the output end of WatchDog Timer chip U2 is in high-impedance state, therefore triode Q2 is in off state, place
It is also high level signal that reason device U1 input port SD3_DAT1, which is detected,；
When touch key S1 is pressed, processor U1 input port SD3_DAT0 is connected to the ground by touch key S1
Line, processor U1 input port SD3_DAT0 detect that level signal switchs to low level signal by high level signal；Triode Q1
Base stage be connected to ground wire also by touch key S1, triode Q1 conducting, DC power supply is house dog timing by triode
Device chip U2 power supply, WatchDog Timer chip U2 start to work and count；
Since the working time of WatchDog Timer chip U2 is the duration that touch key S1 is pressed, if touching
Key S1 after being pressed again be released immediately, i.e. touch key S1 be pressed the duration be less than timer setting time,
To preset numerical value, just power-off stops working again for WatchDog Timer chip U2 also no count, in WatchDog Timer chip U2
It counts and resets；If the time that touch key S1 is persistently pressed is more than the time of WatchDog Timer chip U2 setting, wait guard the gate
After dog timer chip U2 count down to preset numerical value, the output end of WatchDog Timer chip U2 will export low level signal,
Triode Q2 is connected at this time, and processor U1 input port SD3_DAT1 is connected to ground wire, processor U1 input by triode Q2
Port SD3_DAT1 detects that level signal switchs to low level signal by high level signal.
Therefore, industrial personal computer key control circuit provided by the embodiment of the utility model, touch key S1 therein are pressed
When, an input port of processor U1 detects the variation of input signal, can trigger processor U1 execution one and presets
Program function, the display interface of industrial personal computer display screen is such as returned into main interface；And when touch key S1 consecutively pressed it is super
After spending the preset time, another input port of processor U1 also will test the variation of input signal, to make processor U1
Another preset program function is executed, such as restarts the communication module of industrial personal computer；I.e. the utility model embodiment mentions
The industrial personal computer key control circuit of confession, touch key S1 can be realized the triggering of two kinds of program functions.
Industrial personal computer key control circuit provided by the embodiment of the utility model, by the way that WatchDog Timer chip is arranged, together
When by touch key S1 control WatchDog Timer chip current supply circuit so that touch key S1 is in short-press and two kinds of long-pressing
Under situation, the triggering of two kinds of distinct program functions can be realized, enrich the function of touch key S1；Using the utility model reality
The industrial personal computer key control circuit for applying example offer, is able to use less key and realizes the input of more functions, to reduce
Number of keys to be used is needed on industrial personal computer, conducive to the integration and miniaturization of industrial personal computer.
The utility model embodiment also provides a kind of industrial personal computer, including several touch keys, one or more is described light
Touch of key-press is controlled using described in any item industrial personal computer key control circuits as above.When it is implemented, can be by industrial personal computer
On one or more touch key S1 use above-mentioned industrial personal computer key control circuit, the case where keeping same key number
Under, more program functions can be triggered, directly conducive to the integration and miniaturization of industrial personal computer.
Although more herein used the arts such as processor, WatchDog Timer chip, triode, DC power supply
Language, but it does not exclude the possibility of using other terms.The use of these items is only for be more convenient to describe and explain this
The essence of utility model；It is contrary to the spirit of the present invention to interpret them as any one of the additional limitations.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (5)
1. a kind of industrial personal computer key control circuit, it is characterised in that: including processor U1, touch key S1 and WatchDog Timer
Chip U2；
The first end of the touch key S1 is divided into three tunnels, and the first via is connected to DC power supply, the connection of the second tunnel by resistance R1
To the processor U1, third road is connected to the base stage of triode Q1；The second end of the touch key S1 is connected to ground wire；Institute
The emitter for stating triode Q1 is connected to DC power supply；The collector of the triode Q1 is connected to WatchDog Timer chip U2
Power input；
The input terminal of the WatchDog Timer chip U2 is connected to the processor U1；The WatchDog Timer chip U2's
Output end is connected to the base stage of triode Q2；The collector of the triode Q2 is connected to ground wire；The transmitting of the triode Q2
Pole is divided into two-way, is connected to DC power supply by resistance R2 all the way, and another way is connected to the processor U1.
2. industrial personal computer key control circuit according to claim 1, it is characterised in that: the triode Q1 and the triode
Q2 is PNP type triode.
3. industrial personal computer key control circuit according to claim 1, it is characterised in that: the model of the processor U1
MCIMX6Q6AVT10AC。
4. industrial personal computer key control circuit according to claim 1, it is characterised in that: the model of WatchDog Timer chip U2
For UCC3946.
5. a kind of industrial personal computer, including several touch keys, it is characterised in that: one or more described touch key is used as weighed
Benefit requires the described in any item industrial personal computer key control circuits of 1-4 to be controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821607784.4U CN208737451U (en) | 2018-09-29 | 2018-09-29 | A kind of industrial personal computer key control circuit and industrial personal computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821607784.4U CN208737451U (en) | 2018-09-29 | 2018-09-29 | A kind of industrial personal computer key control circuit and industrial personal computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208737451U true CN208737451U (en) | 2019-04-12 |
Family
ID=66034976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821607784.4U Active CN208737451U (en) | 2018-09-29 | 2018-09-29 | A kind of industrial personal computer key control circuit and industrial personal computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208737451U (en) |
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2018
- 2018-09-29 CN CN201821607784.4U patent/CN208737451U/en active Active
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