CN206865429U - Opening/closing control device and POS - Google Patents
Opening/closing control device and POS Download PDFInfo
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- CN206865429U CN206865429U CN201720745006.0U CN201720745006U CN206865429U CN 206865429 U CN206865429 U CN 206865429U CN 201720745006 U CN201720745006 U CN 201720745006U CN 206865429 U CN206865429 U CN 206865429U
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Abstract
The utility model provides a kind of opening/closing control device and POS, and the opening/closing control device includes：First detection circuit, the second detection circuit, logical gate；The output end of first detection circuit and the input of logical gate are connected, and high level is exported when receiving power supply signal and otherwise exports low level；The output end of second detection circuit and the input of logical gate are connected, and the default control position of input and process chip connects, and signal output high level or low level are kept according to whether default control position exports start；The on-off state that logical gate passes through output signal control electronics.Electronic equipment will not directly start shooting after energization, but the electronic equipment machine logic of better user experience is realized by control, and when carrying out switching on and shutting down logic control using this opening/closing control device, PMU need not be called, the cost of electronic equipment can be reduced, so as to provide lower cost solution for the switching on and shutting down logical design of general electronic equipment.
Description
Technical field
It the utility model is related to circuit field, more particularly to a kind of opening/closing control device and POS.
Background technology
Electronic equipment can perform power-on operation after access power supply adaptor is detected；But user it is generally desirable to pass through
After triggering preset switches machine control button (Power keys), electronic equipment just performs power-on operation (switching on and shutting down logic).Current is normal
It is by PMU (power management unit, PMU) management switch machine logic to advise the practice, presses Power keys
Chip drives default control position output start holding signal (hold signals), the port with reference to PMU management switch machine logics are defeated afterwards
The high level electronic equipment gone out performs power-on operation.
However, power management integrated unit supporting as electronic equipment master chip PMU, is needed to integrate by master chip
The multiple functions such as power management, charge control, switching on and shutting down control circuit, it is clear that PMU price also costly, is realized with PMU and opened
Shutdown logic will greatly improve the cost of electronic equipment.
Utility model content
In view of this, the utility model provides a kind of opening/closing control device and POS, to solve in correlation technique
Deficiency.
The utility model embodiment provides a kind of opening/closing control device, and the opening/closing control device is used for tape handling
The electronic equipment of chip, the process chip drive electronics work；The opening/closing control device includes：First detection electricity
Road, the second detection circuit, logical gate；
First detection circuit includes switch, and the output end of the first detection circuit and the input of logical gate are connected, connect
High level is exported when receiving power supply signal and otherwise exports low level；Second detection circuit includes switch, and second detects the defeated of circuit
Go out end to be connected with the input of logical gate, the default control position connection of input and process chip, according to default control position
Whether output start keeps signal output high level or low level；Logical gate is opened by output signal control electronics
Off-mode.
In one embodiment, the power supply signal is the output signal of power supply or the output signal of auxiliary power supply.
In one embodiment, the first detection circuit also includes：First accessory power supply, the first transistor, the second crystal
Pipe, first resistor, second resistance, 3rd resistor, the 4th resistance；
The base stage of the first transistor is connected by first resistor, switch and power supply or auxiliary power supply, grounded emitter,
Colelctor electrode is connected by second resistance with the first accessory power supply；
The base stage of second transistor is connected by the colelctor electrode of 3rd resistor and the first transistor, grounded emitter, current collection
Pole is connected by the 4th resistance with the first accessory power supply；
The output end of first detection circuit is receiving power supply between the 4th resistance and the colelctor electrode of second transistor
High level is exported during signal and otherwise exports low level.
In one embodiment, the logical gate is two inputs and gate circuit；
Two input is connected with an input of gate circuit with the output end of the first detection circuit, another input
It is connected with the output end of the second detection circuit；Two input and gate circuit the first detection electric circuit inspection to power supply signal and
Second detection electric circuit inspection keeps exporting high level during signal to start, otherwise exports low level.
In one embodiment, the power supply signal includes output signal, the output signal of auxiliary power supply of power supply.
In one embodiment, the first detection circuit also includes：Second accessory power supply, the 3rd accessory power supply, the 3rd crystalline substance
Body pipe, the 4th transistor, the 5th transistor, the 6th transistor, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance,
Nine resistance, the tenth resistance, the 11st resistance, the 12nd resistance；
The base stage of third transistor is connected with power supply by the 5th resistance, a switch, grounded emitter, and colelctor electrode passes through the
Six resistance are connected with the second accessory power supply；
The base stage of 4th transistor is connected by the 7th resistance and the colelctor electrode of third transistor, grounded emitter, current collection
Pole is connected by the 8th resistance with the second accessory power supply；
First output end of the first detection circuit is receiving between the 8th resistance and the colelctor electrode of the 4th transistor
High level is exported during the output signal of power supply, otherwise exports low level；
The base stage of 5th transistor is connected by the 9th resistance, another switch with auxiliary power supply, grounded emitter, collection
Electrode is connected by the tenth resistance with the 3rd accessory power supply；
The base stage of 6th transistor is connected by the 11st resistance with the colelctor electrode of the 5th transistor, grounded emitter, collection
Electrode is connected by the 12nd resistance with the 3rd accessory power supply；
Second output end of the first detection circuit is receiving between the 12nd resistance and the colelctor electrode of the 6th transistor
To auxiliary power supply output signal when export high level, otherwise export low level.
In one embodiment, the logical gate includes：One or two input OR circuit, the two or two input OR gate electricity
Road, the one or two input and gate circuit, the two or two input and gate circuit；
First output end of a first detection circuit input with the one or two input OR circuit, the one or two defeated respectively
Enter and be connected with an input of gate circuit, the second output end respectively with the one or two input OR circuit another input,
One or two input is connected with another input of gate circuit；
One input of the two or two input OR circuit is connected with the output end of the second detection circuit, another input
It is connected with the one or two input with the output end of gate circuit；
Two or two input is connected with an input of gate circuit with the output end of the one or two input OR circuit, another
Input is connected with the output end of the two or two input OR circuit；Two or two input is with gate circuit in the first detection circuit inspection
Measure power supply signal and the second detection electric circuit inspection keeps exporting high level during signal to start, otherwise export low level.
In one embodiment, the logical gate includes：Three input OR circuits, the one or two input and gate circuit, the
Two or two inputs and gate circuit, the three or two input and gate circuit；
First output end of the first detection circuit respectively with the one or two input and an input of gate circuit, the three or two defeated
Enter and be connected with an input of gate circuit；Second output end respectively with the one or two input and an input of gate circuit, the
Two or two inputs are connected with an input of gate circuit；The output end of second detection circuit is inputted respectively with the two or two and gate circuit
An input, the three or two input be connected with an input of gate circuit；
One input of three input OR circuits is connected with the one or two input with the output end of gate circuit, another input
End is connected with the two or two input with the output end of gate circuit, the 3rd input connects with the three or two input and the output end of gate circuit
Connect；The three input OR circuit receives power supply signal in the first detection circuit and the second detection electric circuit inspection is protected to start
High level is exported when holding signal, otherwise exports low level.
In one embodiment, the logical gate includes：Three input nand gate circuits, the one or two input nand gate electricity
Road, the two or two input nand gate circuit, the three or two input nand gate circuit；
The first output end input, the three or two with the one or two input nand gate circuit respectively of first detection circuit
The input connection of input nand gate circuit；The input with the one or two input nand gate circuit respectively of second output end
End, the input connection of the two or two input nand gate circuit；The output end of second detection circuit inputs with the two or two respectively
The input connection of the input, the three or two input nand gate circuit of NAND gate circuit；
One input of three input nand gate circuits is connected with the output end of the one or two input nand gate circuit, another
Input is connected with the output end of the two or two input nand gate circuit, the 3rd input and the three or two input nand gate circuit
Output end connects；The three input nand gates circuit is in the first detection electric circuit inspection to power supply signal and the second detection circuit inspection
Measure start to keep exporting high level during signal, otherwise export low level.
In one embodiment, the logical gate includes：Three input OR-NOT circuits, the one or two input nor gate electricity
Road, the two or two input OR-NOT circuit, the three or two input OR-NOT circuit；
First detection circuit the first output end respectively with the one or two input OR-NOT circuit input, the three or two
Input the input connection of OR-NOT circuit；The input with the one or two input OR-NOT circuit respectively of second output end
End, the input connection of the two or two input OR-NOT circuit；The output end of second detection circuit inputs with the two or two respectively
The input connection of one input of OR-NOT circuit, the three or two input OR-NOT circuit；
One input of three input OR-NOT circuits is connected with the output end of the one or two input OR-NOT circuit, another
Input is connected with the output end of the two or two input OR-NOT circuit, the 3rd input and the three or two inputs OR-NOT circuit
Output end connects；The three input OR-NOT circuit is in the first detection electric circuit inspection to power supply signal and the second detection circuit inspection
Measure start to keep exporting high level during signal, otherwise export low level.
In one embodiment, the second detection circuit also includes：4th accessory power supply, the 7th transistor, the 8th crystal
Pipe, the 13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance；
The base stage of 7th transistor is connected by the 13rd resistance, switch and default control position, grounded emitter, colelctor electrode
It is connected by the 14th resistance with the 4th accessory power supply；
The base stage of 8th transistor is connected by the 15th resistance with the colelctor electrode of the 7th transistor, grounded emitter, collection
Electrode is connected by the 16th resistance with the 4th accessory power supply；
The output end of second detection circuit is between the 16th resistance and the colelctor electrode of the 8th transistor；It is pre- detecting
If control bit output start keeps exporting high level during signal, low level is otherwise exported.
The invention also discloses a kind of POS, including：Opening/closing control device, process chip；
The opening/closing control device includes：First detection circuit, the second detection circuit, logical gate；
First detection circuit includes switch, and the output end of the first detection circuit and the input of logical gate are connected, connect
High level is exported when receiving power supply signal and otherwise exports low level；Second detection circuit includes switch, and second detects the defeated of circuit
Go out end to be connected with the input of logical gate, the default control position connection of input and process chip, according to default control position
Whether output start keeps signal output high level or low level；The output end of logical gate is connected with process chip；Switch
Gate circuit controls the on-off state of POS by output signal.
From above technical scheme, opening/closing control device provided by the utility model passes through the first detection electric circuit inspection
Power supply signal, signal is kept by the second detection electric circuit inspection start, first detects state output of the circuit according to power supply signal
High level or low level；Second detection circuit keeps signal output high level or low electricity according to whether default control position exports start
It is flat；The input of the output end and logical gate of first detection circuit and the second detection circuit connects；Logical gate according to
First detection circuit, the second detection circuit output signal output high level or low level, with the switching on and shutting down shape of control electronics
State.So as to which electronic equipment will not directly start shooting after being powered, but the electronic equipment of better user experience is realized by control
Switching on and shutting down logic, and during the control of use opening/closing control device of the present utility model progress switching on and shutting down logic, without calling
PMU, the cost of electronic equipment can be reduced, so as to provide low cost side for the switching on and shutting down logical design of general electronic equipment
Case.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The utility model can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, show meet it is of the present utility model
Embodiment, and for explaining principle of the present utility model together with specification.
Fig. 1 is a kind of opening/closing control device structural representation of the utility model according to an exemplary embodiment；
Fig. 2 is a kind of opening/closing control device structural representation of the utility model according to another exemplary embodiment
Figure；
Fig. 3 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Fig. 4 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Fig. 5 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Fig. 6 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Fig. 7 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Fig. 8 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Fig. 9 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Figure 10 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Figure 11 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Figure 12 is a kind of opening/closing control device structural representation of the utility model according to further example embodiment
Figure；
Figure 13 is a kind of structural representation of POS of the utility model according to an exemplary embodiment.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The example of the consistent apparatus and method of some aspects being described in detail in appended claims, of the present utility model.
It is only merely for the purpose of description specific embodiment in the term of the utility model operation, and is not intended to be limiting this reality
With new." one kind ", " described " and "the" of the singulative run in the utility model and appended claims
It is intended to include most forms, unless context clearly shows that other implications.It is also understood that run herein term " and/
Or " refer to and any or all may be combined comprising the associated list items purposes of one or more.
It will be appreciated that though various information may be described using term first, second, third, etc. in the utility model,
But these information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not
In the case of departing from the scope of the utility model, the first information can also be referred to as the second information, and similarly, the second information can also
It is referred to as the first information.Depending on linguistic context, as run at this word " if " can be construed to " and ... when " or
" when ... " or " in response to determining ".
The opening/closing control device that the utility model embodiment provides can be used for electronic equipment, for example, smart mobile phone, flat
Plate computer, personal digital assistant (Personal Digital Assistant, PDA), POS etc., the electronic equipment is mounted with
Process chip, electronic equipment access external power supply (such as civil power) and/or auxiliary power supply (such as battery etc.) and after
After pressing Power keys, worked by process chip drive electronics.
As shown in figure 1, Fig. 1 is a kind of opening/closing control device of the utility model according to an exemplary embodiment
100 structural representations, opening/closing control device 100 include：
First detection circuit 130, second detects circuit 120, logical gate 110；
First detection circuit 130 and second detects circuit 120 comprising switch, because the output end of switch is not necessarily the
One detection circuit 130/ second detects the output end of circuit 120, for ease of description, is switched not shown in Fig. 1, the electricity comprising switch
Road figure refers to subsequent embodiment.
First detection circuit 130 is used to detect power supply signal, and its output end is connected with the input of logical gate 110,
According to the state output high level of power supply signal or low level to logical gate 110；Second detection circuit 120 is used for and processing
The default control position (not shown) connection of chip, its output end is connected with the input of logical gate 110, according to default
Whether control bit exports start and keeps signal output high level or low level to logical gate 110；Logical gate 110 passes through
The on-off state of output signal control electronics.
, can also be by built-in auxiliary power supply because electronic equipment can be powered by the power supply (such as civil power) of outside
(such as lithium battery, battery etc.) powers, it is clear that electronic equipment may have a kind of power supply mode, it is also possible to have a variety of suppliers of electricity
Formula, power supply signal include following at least one：The output signal of power supply, the output signal of auxiliary power supply.Therefore, this practicality
A new embodiment detects power supply signal by the first detection circuit 130, detects and high level is exported during power supply signal, is not detected
Low level is exported during to power supply signal.After being triggered due to default start control button (Power keys), electronic equipment is just performed and opened
Machine operates (switching on and shutting down logic), and the default control position for pressing Power keys post processing chip will export to start shooting and keep signal, this reality
The second detection detection start of circuit 120 is set to keep signal with a new embodiment, to detect whether Power keys are triggered.The
The output end that one detection circuit 130 and second detects circuit 120 is connected with the input of logical gate 110, logical gate
110 export when the first detection circuit 130 detects power supply signal and the second detection circuit 120 detects that start keeps signal
High level, otherwise export low level；When logical gate 110 exports low level, electronic equipment is in off-mode, is switching
Electronic equipment is in open state when gate circuit 110 exports high level, and electronics is controlled by the output signal of logical gate 110
The on-off state of equipment；So as to which electronic equipment will not directly start shooting after being powered, but Consumer's Experience is realized by control
Preferable electronic equipment machine logic, and carry out switching on and shutting down logic using opening/closing control device 100 of the present utility model
During control, without calling PMU, the cost of electronic equipment can be reduced, so as to the switching on and shutting down logical design for general electronic equipment
Provide lower cost solution.
First detection circuit 130 includes switch, when the output end of switch is the output end of the first detection circuit 130,
The magnitude of voltage of output end output is suitable with the magnitude of voltage of power supply signal, if the magnitude of voltage of power supply signal is higher, may burn out
Logical gate 110.Thus, when electronic equipment only has a kind of power supply mode, and the magnitude of voltage of power supply signal is no more than switch gate
During the threshold voltage of circuit, the output end using the output end of switch as the first detection circuit 130, as shown in Fig. 2 in switching on and shutting down
In control device 200, the first detection circuit 230 can be switch 231, be exported so as to switch 231 when detecting power supply signal
High level, low level is exported when being not detected by power supply signal.
In the present embodiment, when no power supply signal inputs, the ground connection of switch 231 (low level)；There is power supply signal input
When, the magnitude of voltage (high level) of power supply signal is directly used as an input signal of logical gate 210 by switch 231.
When the power supply signal of electronic equipment is no more than the threshold voltage of logical gate 210, scheme described in the present embodiment can be used, the
One detection circuit 230 is simple in construction, can further reduce the cost of electronic equipment.
However, the power supply signal magnitude of voltage of distinct electronic apparatuses is different, such as the difference such as 5V, 9V, 12V, 24V, 36V
The power supply signal of specification, in order to adapt to the power supply signal of different size, shown as shown in figure 3, Fig. 3 is the utility model according to another
Example property implements the structural representation of a kind of opening/closing control device 300 exemplified；Power supply signal is the output signal or auxiliary of power supply
The output signal of electric supply installation is helped, the first detection circuit 330 not only includes switch 331, in addition to：First accessory power supply 332,
One transistor 337, second transistor 338, first resistor 333, second resistance 334,3rd resistor 335, the 4th resistance 336；
The base stage of the first transistor 337 by first resistor 333, switch 331 with power supply or auxiliary power supply (in figure not
Show) connect, grounded emitter, colelctor electrode is connected by second resistance 334 with the first accessory power supply 332；
The base stage of second transistor 338 is connected by 3rd resistor 335 with the colelctor electrode of the first transistor 337, emitter stage
Ground connection, colelctor electrode are connected by the 4th resistance 336 with the first accessory power supply 332；
First detects the output end of circuit 330 between the 4th resistance 336 and the colelctor electrode of second transistor 338,
Low level is exported when detecting and high level is exported during power supply signal, is not detected by power supply signal.
First detection circuit 330 of said structure, in no access power supply signal, the ground connection of switch 331 (low level), the
The base stage of one transistor 337 is low level, is in cut-off state so as to the first transistor 337, then the colelctor electrode of the first transistor 337
With the magnitude of voltage (high level) of the magnitudes of voltage of 334 nodes of second resistance equivalent to the first accessory power supply 332, so as to the second crystal
The base stage of pipe 338 is high level, and second transistor 338 is in the conduction state, the first accessory power supply 332, the 4th resistance 336,
Two-transistor 338 arrives the circuit turn-on on ground, the magnitude of voltage pole of the 4th resistance 336 and the inter-collector node of second transistor 338
Low (equivalent to low level), so as to which in no access power supply signal, the output end of the first detection circuit 330 exports low level.
When accessing power supply signal, the magnitude of voltage (high level) of power supply signal is transmitted by switch 331, first resistor 333
To the base stage of the first transistor 337, so as to which the first transistor 337 is in the conduction state, the first accessory power supply 332, second resistance
334th, the first transistor 337 is to the circuit turn-on on ground, the voltage of node between the colelctor electrode of the first transistor 337 and second resistance 334
It is worth extremely low (equivalent to low level), so as to which the base stage of second transistor 338 is low level, second transistor 338 is in cut-off shape
State, then the magnitude of voltage of the inter-collector node of the 4th resistance 336 and second transistor 338 is equivalent to the first accessory power supply 332
Magnitude of voltage (high level), so as to which when accessing power supply signal, the output end of the first detection circuit 330 exports high level.
From the foregoing, it will be observed that the magnitude of voltage of power supply signal does not influence the magnitude of voltage of the output end output of the first detection circuit 330, the
The magnitude of voltage of the output end output of one detection circuit 330 is determined by the magnitude of voltage of the first accessory power supply 332, and the first accessory power supply
332 magnitude of voltage can be set according to the logical gate 310 being related in the utility model, such as the first accessory power supply 332
Magnitude of voltage is 5V etc..So as to which the opening/closing control device 300 of the present embodiment can be applied to the power supply signal of different size.
Exemplified by there was only a kind of electronic equipment of power supply mode, conventional switching on and shutting down logic is：It is powered and Power keys is touched
Hair (detecting that start keeps signal) is started shooting afterwards, and electronic equipment is in off-mode when other.Using "on" position as A, start
Holding signal condition is B, on-off state is that the truth table 1 that F is listed is as follows：
Truth table 1
| A | B | F |
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
In order to realize the function of above-mentioned truth table 1, as shown in figure 4, the present embodiment has selected two inputs and gate circuit 411 real
The above-mentioned function of existing logical gate 410, Fig. 4 is a kind of switching on and shutting down of the utility model according to further example embodiment
The structural representation of control device 400；
Logical gate 410 is two inputs and gate circuit 411；
Two inputs are connected with an input of gate circuit 411 with the output end of the first detection circuit 430, another input
The output end with the second detection circuit 420 is held to be connected；So as to detect power supply signal and the second inspection in the first detection circuit 430
When slowdown monitoring circuit 420 detects that start keeps signal, two inputs export high level with gate circuit 411, otherwise export low level.Opening
Electronic equipment is in off-mode when shutdown circuit 410 exports low level, and when logical gate 410 exports high level, electronics is set
It is standby to be in open state, the on-off state that logical gate 410 passes through output signal control electronics；After being powered
Electronic equipment will not directly start shooting, and use two inputs to be used as logical gate 410 with gate circuit 411, simple in construction, price is low
It is honest and clean, the cost of electronic equipment can be reduced.Obviously, it can realize that the structure of the logical gate 410 of the above-mentioned function of truth table 1 is more
Sample, it will not go into details to this for the utility model.
As it was previously stated, electronic equipment may have a kind of power supply mode, it is also possible to have a variety of power supply modes, when electronic equipment has
During two kinds of power supply mode (power supply, auxiliary power supply power supplies), then first the switch at least two that circuit 130 includes is detected,
And when the magnitude of voltage of power supply signal is no more than the threshold voltage of logical gate 110, the output end that can be switched is as first
The output end of circuit 130 is detected, is opened as shown in figure 5, Fig. 5 is the one kind of the utility model according to further example embodiment
Shut down the structural representation of control device 500；
First detection circuit 530 includes switch 531, switch 532；
Logical gate 510 is connected by switch 531 with power supply (not shown), by switch 532 and auxiliary power supply
Device (not shown) connects；
First output end of the first detection circuit 530 is the signal output part of switch 531, is believed in the output for detecting power supply
Number when export high level, export low level when being not detected by the output signal of power supply；Second output end of the first detection circuit 530
For the signal output part of switch 532, high level is exported when detecting the output signal of auxiliary power supply, is not detected by auxiliary
Low level is exported during the output signal of electric supply installation.
In the present embodiment, when not being connected with power supply, the ground connection of switch 531 (low level)；When being connected with power supply, power supply
Magnitude of voltage (high level) logical gate 510 is directly used as by switch 531 input signals.Do not supplied with auxiliary
When electric installation connects, the ground connection of switch 532 (low level)；When being connected with auxiliary power supply, the magnitude of voltage of auxiliary power supply
(high level) is directly used as an input signal of logical gate 510 by switch 532.Electronic equipment power supply signal not
More than logical gate 510 threshold voltage when, scheme described in the present embodiment can be used, the first detection circuit 530 structure letter
It is single, the cost of electronic equipment can be reduced.
As it was previously stated, in order to adapt to the power supply signal of different size, as shown in fig. 6, Fig. 6 is the utility model according to another
The structural representation of a kind of opening/closing control device 600 shown in exemplary embodiment；First detection circuit 630 not only includes switch
631st, switch 641, in addition to：Second accessory power supply 632, the 3rd accessory power supply 642, third transistor 637, the 4th transistor
638th, the 5th transistor 647, the 6th transistor 648, the 5th resistance 633, the 6th resistance 634, the 7th resistance 635, the 8th resistance
636th, the 9th resistance 643, the tenth resistance 644, the 11st resistance 645, the 12nd resistance 646；
The base stage of third transistor 637 is connected by the 5th resistance 633, switch 631 with power supply (not shown), is launched
Pole is grounded, and colelctor electrode is connected by the 6th resistance 634 with the second accessory power supply 632；
The base stage of 4th transistor 638 is connected by the 7th resistance 635 with the colelctor electrode of third transistor 637, emitter stage
Ground connection, colelctor electrode are connected by the 8th resistance 636 with the second accessory power supply 632；
First output end of the first detection circuit 630 be located at the 8th resistance 636 and the 4th transistor 638 colelctor electrode it
Between, export low level when high level is exported when detecting the output signal of power supply, being not detected by the output signal of power supply；
The base stage of 5th transistor 647 passes through the 9th resistance 643, switch 641 and auxiliary power supply (not shown)
Connection, grounded emitter, colelctor electrode are connected by the tenth resistance 644 with the 3rd accessory power supply 642；
The base stage of 6th transistor 648 is connected by the 11st resistance 645 with the colelctor electrode of the 5th transistor 647, transmitting
Pole is grounded, and colelctor electrode is connected by the 12nd resistance 646 with the 3rd accessory power supply 642；
Second output end of the first detection circuit 630 be located at the 12nd resistance 646 and the 6th transistor 648 colelctor electrode it
Between, high level is exported when detecting the output signal of auxiliary power supply, is not detected by the output signal of auxiliary power supply
When export low level.
Based on the principle similar with embodiment illustrated in fig. 3, in the present embodiment, the output signal of power supply is not being detected
When, the first output end output low level of the first detection circuit 630, when detecting the output signal of power supply, the first detection electricity
The first output end output high level on road 630；When not detecting the output signal of auxiliary power supply, the first detection circuit
630 the second output end output low level, when detecting the output signal of auxiliary power supply, the first detection circuit 630
Second output end exports high level.And the magnitude of voltage of power supply signal does not influence the electricity of the output end output of the first detection circuit 630
Pressure value, the magnitude of voltage of the first output end output of the first detection circuit 630 determine by the magnitude of voltage of the second accessory power supply 632, the
The magnitude of voltage of two output ends output is determined by the magnitude of voltage of the 3rd accessory power supply 642, and the second accessory power supply the 632, the 3rd aids in
The magnitude of voltage of power supply 642 can be set according to the logical gate 610 being related in the utility model, such as the second accessory power supply
632nd, the magnitude of voltage of the 3rd accessory power supply 642 is 5V etc..So as to which the opening/closing control device 600 of the present embodiment can be applied to
The power supply signal of different size.
Exemplified by having the electronic equipment of two kinds of power supply modes, conventional switching on and shutting down logic is：Be powered (power supply, auxiliary power supply
Device is at least one in place) and Power keys be triggered and (detect that start keeps signal) and start shooting afterwards；Power supply, auxiliary power supply
When in place, power supply charges to auxiliary power supply；Electronic equipment is in off-mode when other.Using power supply status as A, auxiliary
It is B to help electric supply installation state, start holding signal condition is C, on-off state is that the truth table 2 that F is listed is as follows：
Truth table 2
| A | B | C | F |
| 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 0 |
| 0 | 1 | 0 | 0 |
| 0 | 1 | 1 | 1 |
| 1 | 0 | 0 | 0 |
| 1 | 0 | 1 | 1 |
| 1 | 1 | 0 | 1 |
| 1 | 1 | 1 | 1 |
Logical expression can be listed according to above-mentioned truth table 2：F=A ' BC+AB ' C+ABC '+ABC, above-mentioned logical expression
Formula can be converted to a variety of different expression-forms, such as：F=is expressed as with two inputs and gate circuit, two input OR circuits
(A+B) (AB+C), F=AB+BC+AC is expressed as with gate circuit, OR circuit with minimum, with minimum NAND gate circuit table
F=((AB) ' (BC) ' (AC) ') ' is shown as, F=(A ' B '+B ' C '+A ' C ') ' is expressed as with minimum AND OR NOT gate circuit,
F=((A+B) '+(B+C) '+(A+C) ') ' is expressed as with minimum OR-NOT circuit.
Logical gate is designed according to above-mentioned logical expression, you can the function of above-mentioned truth table 2 is realized, for logical table
Up to formula F=(A+B) (AB+C), as shown in fig. 7, Fig. 7 is the one kind of the utility model according to further example embodiment
The structural representation of opening/closing control device 700；Wherein logical gate 730 includes：One or two input OR circuit 711, second
Two input OR circuit the 712, the 1st inputs and the input of gate circuit the 713, the 2nd 2 and gate circuit 714；
First output end of the first detection circuit 730 input with the one or two input OR circuit 711, the respectively
One or two inputs are connected with an input of gate circuit 713, and the second output end is another with the one or two input OR circuit 711 respectively
One input, the one or two input are connected with another input of gate circuit 713；
One input of the two or two input OR circuit 712 is connected with the output end of the second detection circuit 720, another
Input is connected with the one or two input with the output end of gate circuit 713；
Two or two input is connected with an input of gate circuit 714 with the one or two output end for inputting OR circuit 711,
Another input is connected with the output end of the two or two input OR circuit 712；Two or two input is with gate circuit 714 in the first inspection
Slowdown monitoring circuit 730 detects power supply signal and the second detection circuit 720 detects that start keeps exporting high level during signal, otherwise
Export low level.When logical gate 710 exports low level, electronic equipment is in off-mode, defeated in logical gate 710
Electronic equipment is in open state (power supply charges to auxiliary power supply, electronic equipment start operation) when going out high level, passes through
The on-off state of the output signal control electronics of logical gate 710；So as to which electronic equipment after being powered will not be direct
Start, and the logical gate 710 of the present embodiment only by the OR circuits of 2 two inputs, 2 two inputs with gate circuit group
Into, it is simple in construction, cheap, the cost of electronic equipment can be reduced.
For logical expression F=AB+BC+AC, as shown in figure 8, Fig. 8 is the utility model according to another exemplary implementation
The structural representation of a kind of opening/closing control device 800 exemplified；Logical gate 810 includes：Three input OR circuits 814,
One or two input and the input of gate circuit the 811, the 2nd 2 and the input of gate circuit the 812, the 3rd 2 and gate circuit 813；
First output end of the first detection circuit 830 respectively with the one or two input and an input of gate circuit 811, the
Three or two inputs are connected with an input of gate circuit 813；Second output end of the first detection circuit 830 is defeated with the one or two respectively
Enter and be connected with an input of gate circuit 811, the two or two input with an input of gate circuit 812；Second detection circuit
820 output end inputs one with gate circuit 813 with an input of the two or two input and gate circuit 812, the three or two respectively
Individual input connection；
One input of three input OR circuits 814 is connected with the one or two input with the output end of gate circuit 811, is another
Individual input is connected with the output end of gate circuit 812 with the two or two input, the 3rd input and the three or two inputs and gate circuit
813 output end connection；Three input OR circuits 814 detect power supply signal and the second detection electricity in the first detection circuit 830
Road 820 detects that start keeps exporting high level during signal, otherwise exports low electricity.When logical gate 810 exports low level
Electronic equipment is in off-mode, and when logical gate 810 exports high level, electronic equipment is in open state, passes through switch
The on-off state of the output signal control electronics of gate circuit 810；So as to which electronic equipment will not directly start shooting after being powered,
And the logical gate 810 of the present embodiment is only made up of the OR circuit of 1 three input, 3 two inputs with gate circuit, structure
Simply, it is cheap, the cost of electronic equipment can be reduced.
For logical expression F=((AB) ' (BC) ' (AC) ') ', as shown in figure 9, Fig. 9 be the utility model according to
The structural representation of a kind of opening/closing control device 900 shown in further example embodiment；Logical gate 910 includes：Three is defeated
Enter NAND gate circuit 914, the one or two input nand gate circuit 911, the two or two input nand gate circuit the 912, the 3rd 2 input with
Not circuit 913；
First detection circuit 930 the first output end respectively an input with the one or two input nand gate circuit 911,
The input connection of three or two input nand gate circuit 913；Second output end of the first detection circuit 930 is respectively with first
The input connection of the input, the two or two input nand gate circuit 912 of two input nand gate circuits 911；Second
Detect an output end input, the three or two input nand gate with the two or two input nand gate circuit 912 respectively of circuit 920
The input connection of circuit 913；
One input of three input nand gate circuits 914 is connected with the output end of the one or two input nand gate circuit 911,
Another input is connected with the output end of the two or two input nand gate circuit 912, the 3rd input and the three or two input with
The output end connection of not circuit 913；Three input nand gate circuits 914 first detection circuit 930 detect power supply signal and
Second detection circuit 920 detects that start keeps exporting high level during signal, otherwise exports low electricity.It is defeated in logical gate 910
Electronic equipment is in off-mode when going out low level, and when logical gate 910 exports high level, electronic equipment is in start shape
State, pass through the on-off state of the output signal control electronics of logical gate 910；So as to which electronic equipment is not after being powered
Can directly start shooting, and the logical gate 910 of the present embodiment only by the NAND gate circuit of 1 three input, 3 two inputs with it is non-
Gate circuit forms, simple in construction, cheap, can reduce the cost of electronic equipment.
For logical expression F=((A+B) '+(B+C) '+(A+C) ') ', as shown in Figure 10, Figure 10 is the utility model
The structural representation of a kind of opening/closing control device 1000 according to further example embodiment；Logical gate 1010 wraps
Include：Three input OR-NOT circuits 1014, the one or two input OR-NOT circuit 1011, the two or two input OR-NOT circuit 1012, the
Three or two input OR-NOT circuits 1013；
The input with the one or two input OR-NOT circuit 1011 respectively of first output end of the first detection circuit 1030
End, the input connection of the three or two input OR-NOT circuit 1013；The second output end difference of first detection circuit 1030
An input, an input of the two or two input OR-NOT circuit 1012 with the one or two input OR-NOT circuit 1011 connect
Connect；Second detection circuit 1020 output end respectively with the two or two input OR-NOT circuit 1012 input, the three or two
Input the input connection of OR-NOT circuit 1013；
The output end of one input of three input OR-NOT circuits 1014 and the one or two input OR-NOT circuit 1011 connects
Connect, another input is connected with the output end of the two or two input OR-NOT circuit 1012, the 3rd input and the three or two defeated
Enter the output end connection of OR-NOT circuit 1013；Three input OR-NOT circuits 1014 detect power supply in the first detection circuit 1030
Signal and the second detection circuit 1020 detect that start keeps exporting high level during signal, otherwise export low electricity.In switch gate electricity
Electronic equipment is in off-mode when road 1010 exports low level, when logical gate 1010 exports high level at electronic equipment
In open state, pass through the on-off state of the output signal control electronics of logical gate 1010；After being powered
Electronic equipment will not directly start shooting, and the logical gate 1010 of the present embodiment only by 1 three input OR-NOT circuit, 3
The OR-NOT circuit composition of two inputs, it is simple in construction, cheap, the cost of electronic equipment can be reduced.
Obviously, the logical gates of other forms can also be designed to realize the function of above-mentioned truth table 2, above-described embodiment
The merely exemplary form for showing several logical gates, the utility model are not limited the concrete form of logical gate.
Next introduce to start shooting for detection and keep the second detection available structure of circuit of signal, due to generally handling core
The start of the default control position output of piece keeps the magnitude of voltage of signal not over the threshold voltage of logical gate, so as to,
Output end of the output end that can be switched as the second detection circuit.As shown in figure 11, Figure 11 is the utility model according to another
The structural representation of a kind of opening/closing control device 1100 shown in exemplary embodiment；Second detection circuit 1120 can be switch
1121, logical gate 1110 is connected by switch 1121 with the default control position (not shown) of process chip, default
When control bit is not powered on keeping signal output, the ground connection of switch 1121 (low level)；There is start to keep signal in default control position
During output, one that the magnitude of voltage (high level) of start holding signal is directly used as logical gate 1110 by switch 1121 is defeated
Enter signal.Scheme described in the present embodiment can be used, the second detection circuit 1120 is simple in construction, can further reduce electronics and set
Standby cost.
In a upper embodiment, the start of the default control position of process chip output keep the magnitude of voltage of signal directly as
It is 3.3V that one input signal of logical gate 1110, generally start, which keep the magnitude of voltage of signal, although start keeps signal
Magnitude of voltage disclosure satisfy that demand of the logical gate 1110 to high level, however, due to start keep signal magnitude of voltage lead to
Pressure drop is there may be when crossing the second detection circuit 1120, cause that the input of logical gate 1110 receives is not high electricity
It is flat, in order to ensure that the second detection circuit 1120 reliably exports low and high level, the second detection circuit 1120 is improved.
As shown in figure 12, Figure 12 is a kind of switching on and shutting down control dress of the utility model according to further example embodiment
Put 1200 structural representations；Second detection circuit 1220 not only includes switch 1121, in addition to：4th accessory power supply 1222,
Seven transistors 1227, the 8th transistor 1228, the 13rd resistance 1223, the 14th resistance 1224, the 15th resistance the 1225, the tenth
Six resistance 1226；
The base stage of 7th transistor 1227 (is not shown by the 13rd resistance 1223, switch 1221 with default control position in figure
Go out) connect, grounded emitter, colelctor electrode is connected by the 14th resistance 1224 with the 4th accessory power supply 1222；
The base stage of 8th transistor 1228 is connected by the 15th resistance 1225 with the colelctor electrode of the 7th transistor 1227, hair
Emitter grounding, colelctor electrode are connected by the 16th resistance 1226 with the 4th accessory power supply 1222；
The output end of second detection circuit 1220 be located at the 16th resistance 1226 and the 8th transistor 1228 colelctor electrode it
Between；High level is exported when detecting that the output start of default control position keeps signal, otherwise exports low level.
Based on the principle similar with embodiment illustrated in fig. 3, in the present embodiment, do not detecting that start keeps signal
When, the second detection circuit 1220 exports low level, and when detecting that start keeps signal, the second detection circuit 1220 exports high electricity
It is flat.From the foregoing, it will be observed that start keeps the magnitude of voltage of signal not influence the magnitude of voltage that the output end of the second detection circuit 1220 exports, the
Two detect the magnitude of voltage that circuits 1220 export is determined by the magnitude of voltage of the 4th accessory power supply 1222, and the 4th accessory power supply 1222
Magnitude of voltage can be set according to the logical gate 1210 being related in the utility model, such as the voltage of the 4th accessory power supply 1222
It is worth for 5V etc..So as to which the second of the present embodiment detects the output low and high level that circuit 1220 can be stablized, and ensures switching on and shutting down control
The service behaviour of device 1200.
In the various embodiments described above to first detection circuit, second detection circuit, logical gate improvement be it is independent, can
To be combined according to the needs of opening/closing control device use condition, not with the combination shape of above-described embodiment and its accompanying drawing
Formula is limited.
Opening/closing control device provided by the utility model is used to provide switching on and shutting down logic, can apply to various needs and opens
Shut down logic electronic equipment in, at present the simple electronic equipment of structure/function due to price it is relatively low, may not to reduce cost
Using switching on and shutting down logic, that is, do not have Power keys, be powered and start shooting (Routine Management switching on and shutting down logic for price costly
PMU), opening/closing control device provided by the utility model is simple in construction, cheap, can reduce and increase in the electronic device
Increase the cost of shutdown logic, next in applied to POS exemplified by illustrate.
As shown in figure 13, Figure 13 is a kind of knot of POS 1301 of the utility model according to an exemplary embodiment
Structure schematic diagram, the POS 1301 include：The opening/closing control device 1300 of interconnection, process chip 1340；
Opening/closing control device 1300 includes：First detection circuit 1330, second detects circuit 1320, logical gate
1310；
First detection circuit 1330 is used to detect power supply signal, according to the state output high level of power supply signal or low electricity
It is flat；Second detection circuit 1320 is used to be connected with the default control position 1341 of process chip 1340, according to default control position 1341
Whether output start keeps signal output high level or low level；First detection circuit 1330 and second detects the defeated of circuit 1320
Go out end to be connected with the input of logical gate 1310；Logical gate 1310 controls opening for POS 1301 by output signal
Off-mode；
Wherein, power supply signal includes following at least one：The output signal of power supply, the output signal of auxiliary power supply.
If Power key (not shown)s are not triggered, POS 1301 remains turned off state；In the energized state,
After the Power keys of POS 1301 are triggered, process chip 1340 drives default control position 1341 to export start and keeps signal
(hold signals), opening/closing control device 1300 export high level, so as to which POS 1301 is in open state.Certainly, both access
Power supply has accessed auxiliary power supply again when, in the case that Power keys are not triggered, POS 1301 enters charged state.
So as in the case of increasing less cost, it is possible to increase switching on and shutting down logic for POS 1301, meet user's custom, lifting is used
Experience at family.
The operation principle that opening/closing control device 1300 is related in the present embodiment may be referred to above related to architectural feature
Description, will not be described here.
Device embodiment described above is only schematical, wherein the unit illustrated as separating component can
To be or may not be physically separate, it can be as the part that unit is shown or may not be physics list
Member, you can with positioned at a place, or can also be distributed on multiple NEs.It can be selected according to the actual needs
In some or all of module realize the purpose of the utility model.Those of ordinary skill in the art are not paying creation
Property work in the case of, you can to understand and implement.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements done etc., the utility model should be included in
Within the scope of protection.
Claims (12)
1. a kind of opening/closing control device, the opening/closing control device is used for the electronic equipment of tape handling chip, the processing
Chip drives electronic device works；Characterized in that, the opening/closing control device includes：First detection circuit, the second detection
Circuit, logical gate；
First detection circuit includes switch, and the output end of the first detection circuit and the input of logical gate are connected, received
High level is exported during power supply signal and otherwise exports low level；Second detection circuit includes switch, the output end of the second detection circuit
Be connected with the input of logical gate, the connection of the default control position of input and process chip, according to default control position whether
Output start keeps signal output high level or low level；The switching on and shutting down that logical gate passes through output signal control electronics
State.
2. opening/closing control device as claimed in claim 1, it is characterised in that the power supply signal is the output signal of power supply
Or the output signal of auxiliary power supply.
3. opening/closing control device as claimed in claim 2, it is characterised in that
The first detection circuit also includes：First accessory power supply, the first transistor, second transistor, first resistor, the second electricity
Resistance, 3rd resistor, the 4th resistance；
The base stage of the first transistor is connected by first resistor, switch and power supply or auxiliary power supply, grounded emitter, current collection
Pole is connected by second resistance with the first accessory power supply；
The base stage of second transistor is connected by the colelctor electrode of 3rd resistor and the first transistor, and grounded emitter, colelctor electrode leads to
The 4th resistance is crossed to be connected with the first accessory power supply；
The output end of first detection circuit is receiving power supply signal between the 4th resistance and the colelctor electrode of second transistor
When output high level otherwise export low level.
4. opening/closing control device as claimed in claim 1, it is characterised in that the logical gate is two inputs and door electricity
Road；
Two input is connected with an input of gate circuit with the first output end for detecting circuit, another input and the
The output end connection of two detection circuits；Two input is with gate circuit in the first detection electric circuit inspection to power supply signal and second
Detection electric circuit inspection keeps exporting high level during signal to start, otherwise exports low level.
5. opening/closing control device as claimed in claim 1, it is characterised in that the output that the power supply signal includes power supply is believed
Number, the output signal of auxiliary power supply.
6. opening/closing control device as claimed in claim 5, it is characterised in that the first detection circuit also includes：Second
Accessory power supply, the 3rd accessory power supply, third transistor, the 4th transistor, the 5th transistor, the 6th transistor, the 5th resistance,
Six resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance；
The base stage of third transistor is connected by the 5th resistance, a switch with power supply, and grounded emitter, colelctor electrode passes through the 6th electricity
Resistance is connected with the second accessory power supply；
The base stage of 4th transistor is connected by the 7th resistance and the colelctor electrode of third transistor, and grounded emitter, colelctor electrode leads to
The 8th resistance is crossed to be connected with the second accessory power supply；
First output end of the first detection circuit is receiving power supply between the 8th resistance and the colelctor electrode of the 4th transistor
Output signal when export high level, otherwise export low level；
The base stage of 5th transistor is connected by the 9th resistance, another switch with auxiliary power supply, grounded emitter, colelctor electrode
It is connected by the tenth resistance with the 3rd accessory power supply；
The base stage of 6th transistor is connected by the 11st resistance with the colelctor electrode of the 5th transistor, grounded emitter, colelctor electrode
It is connected by the 12nd resistance with the 3rd accessory power supply；
Second output end of the first detection circuit is auxiliary receiving between the 12nd resistance and the colelctor electrode of the 6th transistor
High level is exported during the output signal for helping electric supply installation, otherwise exports low level.
7. opening/closing control device as claimed in claim 6, it is characterised in that the logical gate includes：One or two is defeated
Enter OR circuit, the two or two input OR circuit, the one or two input and gate circuit, the two or two input and gate circuit；
First detection circuit the first output end respectively with the one or two input OR circuit an input, the one or two input with
The input connection of gate circuit, the second output end input another input of OR circuit, first with the one or two respectively
Two inputs are connected with another input of gate circuit；
One input of the two or two input OR circuit is connected with the second output end for detecting circuit, another input and the
One or two inputs are connected with the output end of gate circuit；
Two or two input is connected with an input of gate circuit with the output end of the one or two input OR circuit, another input
The output end with the two or two input OR circuit is held to be connected；Two or two input is arrived with gate circuit in the first detection electric circuit inspection
Power supply signal and the second detection electric circuit inspection keep exporting high level during signal to start, otherwise export low level.
8. opening/closing control device as claimed in claim 6, it is characterised in that the logical gate includes：Three input or
Gate circuit, the one or two input and gate circuit, the two or two input and gate circuit, the three or two input and gate circuit；
First output end of the first detection circuit respectively with the one or two input and an input of gate circuit, the three or two input with
The input connection of gate circuit；Second output end inputs input, the two or two with gate circuit with the one or two respectively
Input is connected with an input of gate circuit；The output end of second detection circuit inputs one with gate circuit with the two or two respectively
Individual input, the three or two input are connected with an input of gate circuit；
One input of three input OR circuits are connected with the output end of gate circuit with the one or two input, another input and
Two or two input is connected with the output end of gate circuit, the 3rd input is connected with the three or two input with the output end of gate circuit；
The three input OR circuit receives power supply signal in the first detection circuit and the second detection electric circuit inspection keeps letter to start
Number when export high level, otherwise export low level.
9. opening/closing control device as claimed in claim 6, it is characterised in that the logical gate includes：Three input with
Not circuit, the one or two input nand gate circuit, the two or two input nand gate circuit, the three or two input nand gate circuit；
An input with the one or two input nand gate circuit, the three or two input respectively of first output end of the first detection circuit
The input connection of NAND gate circuit；Second output end respectively an input with the one or two input nand gate circuit,
The input connection of two or two input nand gate circuit；Second detection circuit output end respectively with the two or two input with it is non-
The input connection of the input, the three or two input nand gate circuit of gate circuit；
One input of three input nand gate circuits is connected with the output end of the one or two input nand gate circuit, another input
End is connected with the output end of the two or two input nand gate circuit, the output of the 3rd input and the three or two input nand gate circuit
End connection；The three input nand gates circuit arrives in the first detection electric circuit inspection to power supply signal and the second detection electric circuit inspection
Start keeps exporting high level during signal, otherwise exports low level.
10. opening/closing control device as claimed in claim 6, it is characterised in that the logical gate includes：Three input or
Not circuit, the one or two input OR-NOT circuit, the two or two input OR-NOT circuit, the three or two input OR-NOT circuit；
An input with the one or two input OR-NOT circuit, the three or two input respectively of first output end of the first detection circuit
The input connection of OR-NOT circuit；Second output end respectively with the one or two input OR-NOT circuit an input,
The input connection of two or two input OR-NOT circuit；Second detection circuit output end respectively with the two or two input or it is non-
The input connection of one input of gate circuit, the three or two input OR-NOT circuit；
One input of three input OR-NOT circuits is connected with the output end of the one or two input OR-NOT circuit, another input
End with the two or two input OR-NOT circuit output end be connected, the 3rd input and the three or two input OR-NOT circuit output
End connection；The three input OR-NOT circuit arrives in the first detection electric circuit inspection to power supply signal and the second detection electric circuit inspection
Start keeps exporting high level during signal, otherwise exports low level.
11. the opening/closing control device as described in any one of claim 1 to 10, it is characterised in that
The second detection circuit also includes：4th accessory power supply, the 7th transistor, the 8th transistor, the 13rd resistance, the tenth
Four resistance, the 15th resistance, the 16th resistance；
The base stage of 7th transistor is connected by the 13rd resistance, switch and default control position, and grounded emitter, colelctor electrode passes through
14th resistance is connected with the 4th accessory power supply；
The base stage of 8th transistor is connected by the 15th resistance with the colelctor electrode of the 7th transistor, grounded emitter, colelctor electrode
It is connected by the 16th resistance with the 4th accessory power supply；
The output end of second detection circuit is between the 16th resistance and the colelctor electrode of the 8th transistor；Detecting default control
Output start in position processed keeps exporting high level during signal, otherwise exports low level.
A kind of 12. POS, it is characterised in that including：Opening/closing control device, process chip；
The opening/closing control device includes：First detection circuit, the second detection circuit, logical gate；
First detection circuit includes switch, and the output end of the first detection circuit and the input of logical gate are connected, received
High level is exported during power supply signal and otherwise exports low level；Second detection circuit includes switch, the output end of the second detection circuit
Be connected with the input of logical gate, the connection of the default control position of input and process chip, according to default control position whether
Output start keeps signal output high level or low level；The output end of logical gate is connected with process chip；Switch gate electricity
Road controls the on-off state of POS by output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720745006.0U CN206865429U (en) | 2017-06-23 | 2017-06-23 | Opening/closing control device and POS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720745006.0U CN206865429U (en) | 2017-06-23 | 2017-06-23 | Opening/closing control device and POS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206865429U true CN206865429U (en) | 2018-01-09 |
Family
ID=60827900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720745006.0U Active CN206865429U (en) | 2017-06-23 | 2017-06-23 | Opening/closing control device and POS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206865429U (en) |
-
2017
- 2017-06-23 CN CN201720745006.0U patent/CN206865429U/en active Active
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