CN207896662U - A kind of control circuit and control system - Google Patents
A kind of control circuit and control system Download PDFInfo
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- CN207896662U CN207896662U CN201820199959.6U CN201820199959U CN207896662U CN 207896662 U CN207896662 U CN 207896662U CN 201820199959 U CN201820199959 U CN 201820199959U CN 207896662 U CN207896662 U CN 207896662U
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Abstract
A kind of control circuit of the utility model offer and control system, wherein control circuit include：Control module, power module, switch module, discharge module and loading interfaces；Wherein, control module includes at least：Switch control terminal and discharge control terminal；Switch module includes that first switch connecting pin, second switch connecting pin and switch controlled end, first switch connecting pin are electrically connected with power module, and second switch connecting pin is electrically connected with loading interfaces, and switch controlled end is electrically connected with switch control terminal；Discharge module includes：First electric discharge connecting pin, the second electric discharge connecting pin and electric discharge controlled end, first electric discharge connecting pin is connected electrically on the tie point that second switch connecting pin is electrically connected with loading interfaces, second electric discharge connecting pin is electrically connected with ground terminal, and electric discharge controlled end is electrically connected with discharge control terminal.
Description
Technical field
The utility model is related to a kind of electronic technology field more particularly to a kind of control circuits and control system.
Background technology
During the design and producing of electronic equipment (such as intelligent code key, smart card), it usually needs to electricity
Sub- equipment carry out it is multiple power on and lower electricity, in order to improve testing efficiency, and avoid repeatedly powering on and when lower electricity existing damage
The hidden danger (such as excessive transient current) of bad equipment under test needs to carry out discharge prevention to equipment under test in lower electricity.Therefore, such as
What simply and effectively carries out discharge prevention to equipment under test, is this field technical problem urgently to be resolved hurrily.
Utility model content
The utility model aims to solve the problem that the above problem.To solve the above problems, the technical solution of the utility model is specifically
It is achieved：
The main purpose of the utility model is to provide a kind of control circuits, including：Control module, power module, switch
Module, discharge module and loading interfaces；Wherein, control module includes at least：Switch control terminal and discharge control terminal；Switch module
It is electrically connected with power module including first switch connecting pin, second switch connecting pin and switch controlled end, first switch connecting pin,
Second switch connecting pin is electrically connected with loading interfaces, and switch controlled end is electrically connected with switch control terminal；Discharge module includes：First
Discharge connecting pin, second electric discharge connecting pin and electric discharge controlled end, first electric discharge connecting pin be connected electrically in second switch connecting pin with
On the tie point of loading interfaces electrical connection, the second electric discharge connecting pin is electrically connected with ground terminal, electric discharge controlled end and discharge control terminal electricity
Connection.
In addition, switch module includes N-channel field-effect tube, the drain electrode of N-channel field-effect tube is as first switch connecting pin
It is electrically connected with power module, the source electrode of N-channel field-effect tube is electrically connected as second switch connecting pin with loading interfaces, N-channel
The grid of field-effect tube is electrically connected as switch controlled end with switch control terminal.
In addition, discharge module includes NPN type triode and discharge current regulation resistance, the collector of NPN type triode is made
It is connected electrically on the tie point that second switch connecting pin is electrically connected with loading interfaces for the first electric discharge connecting pin, NPN type triode
Emitting stage be electrically connected with ground terminal as the second electric discharge connecting pin, the base stage of NPN type triode and discharge current regulation resistance
One end is electrically connected, and the other end of discharge current regulation resistance is electrically connected as electric discharge controlled end with discharge control terminal.
The another object of the utility model is to provide a kind of control system, which is characterized in that including any of the above-described
Control circuit and load, control circuit are connected by loading interfaces and load.
It can be seen from above-mentioned technical solution provided by the utility model the utility model provide a kind of control system and
Control circuit, the on or off that switch module can be controlled by control module control the power supply of electric power source pair of module load, lead to
The electric discharge of the on or off control load of control module control discharge module is crossed, it can be achieved that repid discharge after the lower electricity of load,
So that the lower electricity remaining voltage of back loading will not cause surge, the component of load is protected, the detection next time to load is avoided
When load circuit in remaining voltage testing result is had an impact, and the control system and control circuit are simple and effective, work(
It consumes low, at low cost.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art for, without creative efforts, can also be according to these attached drawings
Obtain other accompanying drawings.
Fig. 1 is the structural schematic diagram for the control system that the utility model embodiment provides；
Fig. 2 is the structural schematic diagram for the control circuit that the utility model embodiment provides；
Fig. 3 is another structural schematic diagram for the control circuit that the utility model embodiment provides.
Specific implementation mode
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, belongs to the scope of protection of the utility model.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as instruction or
Imply relative importance or quantity or position.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
The utility model embodiment is described in further detail below in conjunction with attached drawing.
Embodiment
The present embodiment provides a kind of control circuits and a kind of control system, wherein as shown in Figure 1, control system includes this
Control circuit 101 in embodiment, and load 102.Load 202 can set for intelligent cipher key equipment, smart card, e-payment
It is standby to wait electronic equipments.
The control circuit 101 and control system of the present embodiment will be described in detail below.
Fig. 2 is the structural schematic diagram of control circuit 101 provided in this embodiment, and the control circuit 101 is for controlling and controlling
102 times electricity of load and electric discharge that circuit 101 processed connects, it should be noted that with NMOS tube or NPN type triode in the present embodiment
For the scheme that illustrates, can also be realized by PMOS tube, diode combinations or PNP type triode, each end connects
The ON/OFF condition with reference to PMOS tube, diode or PNP type triode is connect to set, the present embodiment does not do any restrictions.
As shown in Fig. 2, the control circuit 101 includes：Control module 201, power module 202, switch module 203, electric discharge
Module 204 and loading interfaces 205；Wherein,
Control module 201 includes at least：Switch control terminal 2011 and discharge control terminal 2012；
Switch module 203 includes first switch connecting pin 2031, second switch connecting pin 2032 and switch controlled end 2033,
First switch connecting pin 2031 is electrically connected with power module 202, and second switch connecting pin 2032 is electrically connected with loading interfaces 205,
Switch controlled end 2033 is electrically connected with switch control terminal 2012；
Discharge module 204 includes：Discharge connecting pin 2042 and electric discharge controlled end for first electric discharge connecting pin 2041, second
2043, the first electric discharge connecting pin 2041 is connected electrically in the tie point T that second switch connecting pin 2032 is electrically connected with loading interfaces 205
On, the second electric discharge connecting pin 2042 is electrically connected with ground terminal, and electric discharge controlled end 2043 is electrically connected with discharge control terminal 2012.
Test job of the control circuit 101 that the utility model embodiment provides for electronic equipment (load 102), passes through
Control module 201, which controls switch module 203 and discharge module 204, can reach the load 102 for controlling that loading interfaces 205 access
Lower electricity and electric discharge, and then the component of load 102 is protected, and convenient for testing the load 102, it below will be right
Control module 201, the connection relation of switch module 203 and discharge module 204 and operation principle are described in detail.
When loading interfaces 205 have 102 access of load and work normally, is connected under 203 normality of switch module, is power supply mould
Access is provided between block 202 and loading interfaces 205, is remained off under 204 normality of discharge module, 102 access load of load
When interface 205, power module 202 is 102 power supply of load, and discharge module 204 disconnects the connection of load 102 and ground terminal.It is negative at this
It carries 102 to disconnect and before the connection of control circuit 201, can first carry out down load 102 electrically operated, then load 102 is put
It is electrically operated, it is specific as follows：Control module 201 sends switch control signal by switch control terminal 2011 to switch module 203,
The control lower switch module 203 of switch control signal disconnects so that and loading interfaces 205 disconnect the connection with power module 202, into
And load 102 and lose power supply, then control module 201 sends control of discharge by discharge control terminal 2012 to discharge module 204
Signal, discharge module 204 is opened under the control of discharge control signal, the connection of conducting load 102 and ground terminal, and load 102 is logical
Residual voltage is carried out repid discharge by overdischarge module 204 over the ground.
Control circuit 101 provided by the utility model can realize the repid discharge after 102 times electricity of load so that be born after lower electricity
Surge will not be caused by carrying 102 remaining voltages, when protecting the component of load 102, and avoiding the detection next time to loading 102
Remaining voltage in 102 circuits is loaded to have an impact testing result.
As shown in figure 3, in an optional embodiment of the utility model, switch module 203 includes N-channel field-effect
It manages (NMOS tube), the drain D of N-channel field-effect tube is electrically connected as first switch connecting pin 2031 with power module 202, N ditches
The source S of road field-effect tube is electrically connected as second switch connecting pin 2032 with loading interfaces 205, the grid of N-channel field-effect tube
Pole G is electrically connected as switch controlled end 2033 with switch control terminal 2011.
When power module 202 needs the load 102 accessed for loading interfaces 205 to be powered, switch module 203 is electricity
There is provided access between source module 202 and loading interfaces 205, control module 201 is by switch control terminal 2011 to the grid of NMOS tube
Pole G persistently provides high level signal VN0, so that NMOS tube is maintained open state, wherein high level signal VN0＞ VS, and | VN0-VS|
＞ | Vth|, VSFor the voltage of source S, VthFor the cut-in voltage of NMOS tube.When loading 102 times electricity, power module 202 is no longer
The load 102 that loading interfaces 205 access is powered, and switch module 203 carries between power module 202 and loading interfaces 205
For open circuit, control module 201 continues to send switch control signal to the grid G of NMOS tube by switch control terminal 2011, this is opened
It is low level signal V to close control signalN1, NMOS tube is made to maintain cut-off state, wherein | VN1-VS| ＜ | Vth|。
Control module 201 can be controlled by the signal that switch control terminal 2011 is provided to the grid G of NMOS tube as a result,
The unlatching or cut-off of NMOS tube, to control the power supply of load 102 of the power module 202 to access loading interfaces 205.
As shown in figure 3, in an optional embodiment of the utility model, discharge module 204 includes NPN type triode
It is connected electrically in second with discharge current regulation resistance R, the collector C of NPN type triode as the first electric discharge connecting pin 2041 and opens
It closes on the tie point T that connecting pin is electrically connected with loading interfaces, the emitting stage E of NPN type triode is as the second electric discharge connecting pin
2042 are electrically connected with ground terminal, and the base stage B of NPN type triode is electrically connected with one end of discharge current regulation resistance R, discharge current tune
The other end of economize on electricity resistance R is electrically connected as electric discharge controlled end 2043 with discharge control terminal 2012.
When loading interfaces 205 have 102 access of load and work normally, discharge module 204 is loading interfaces 205 and ground terminal
Between open circuit is provided, control module 201 is by discharge control terminal 2012 by discharge current regulation resistance R to NPN type triode
Base stage B low level signal V is persistently providedN2, so that the NPN type triode is remained off state, wherein low level signal VN2＜
0.7V+VR, VRFor the voltage of discharge current regulation resistance R.When loading 102 times electricity, discharge module 204 is 205 He of loading interfaces
Access is provided between ground terminal, control module 201 passes through discharge current regulation resistance R to NPN type three by discharge control terminal 2012
The base stage B of pole pipe persistently provides high level signal VN3, the NPN type triode is made to maintain saturation conduction state, wherein VN3＞ 0.7V
+VR。
The signal that control module 201 can be provided by discharge control terminal 2012 to the base stage B of NPN type triode as a result,
The unlatching or cut-off for controlling NPN type triode make the load 102 of access loading interfaces 205 put to control discharge module 204
Electricity.
Fig. 1 is the structural schematic diagram of control system provided in this embodiment, schemes structure as indicated with 1, the control system packet
Include the control circuit 101 in the present embodiment, and load 202；Specifically, control circuit 201 passes through loading interfaces 205 and load
102 connections provide power supply when the load 102 works normally or tests for the load 102, disconnect and control in the load 102
Before the connection of circuit 101,102 times electricity of control load and control 102 repid discharges over the ground of load.
The control system and control circuit 101 provided through this embodiment can control switching molding by control module 201
Power supply of the on or off control power module 202 of block 203 to load 102, discharge module is controlled by control module 201
The electric discharge of 204 on or off control load 102 is, it can be achieved that load the repid discharge after 102 times electricity so that lower electricity back loading
102 remaining voltages will not cause surge, the component of protection load 102 to avoid loading when the detection next time to load 102
Remaining voltage has an impact testing result in 102 circuits, and the control system and control circuit 101 are simple and effective, work(
It consumes low, at low cost.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of preferred embodiments of the present invention includes other realization, wherein can not press shown or discuss
Sequence, include according to involved function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be by this
The embodiment person of ordinary skill in the field of utility model is understood.
It should be appreciated that each section of the utility model can be realized with hardware, software, firmware or combination thereof.
In the above embodiment, what multiple steps or method can in memory and by suitable instruction execution system be executed with storage
Software or firmware are realized.It, and in another embodiment, can be with known in this field for example, if realized with hardware
Any one of following technology or their combination realize：With the logic gate for realizing logic function to data-signal
The discrete logic of circuit, the application-specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA),
Field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that realize all or part of step that above-described embodiment method carries
Suddenly be that relevant hardware can be instructed to complete by program, program can be stored in a kind of computer readable storage medium
In, which includes the steps that one or a combination set of embodiment of the method when being executed.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing module,
Can be that each unit physically exists alone, can also two or more units be integrated in a module.It is above-mentioned integrated
Module both may be used hardware form realize, can also be realized in the form of software function module.The integrated mould
If block is realized in the form of software function module and when sold or used as an independent product, can also be stored in a meter
In calculation machine read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiments or example.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the scope of the utility model, change, replace and
Modification.The scope of the utility model is by appended claims and its equivalent limits.
Claims (4)
1. a kind of control circuit, which is characterized in that including：Control module, power module, switch module, discharge module and load
Interface；Wherein,
The control module includes at least：Switch control terminal and discharge control terminal；
The switch module includes that first switch connecting pin, second switch connecting pin and switch controlled end, the first switch connect
It connects end to be electrically connected with the power module, the second switch connecting pin is electrically connected with the loading interfaces, and the switch is controlled
End is electrically connected with the switch control terminal；
The discharge module includes：First electric discharge connecting pin, the second electric discharge connecting pin and electric discharge controlled end, first electric discharge connect
It connects end to be connected electrically on the tie point that the second switch connecting pin is electrically connected with the loading interfaces, the second electric discharge connection
End is electrically connected with ground terminal, and the electric discharge controlled end is electrically connected with the discharge control terminal.
2. control circuit according to claim 1, which is characterized in that
The switch module includes N-channel field-effect tube, and the drain electrode of the N-channel field-effect tube is connected as the first switch
End is electrically connected with the power module, and the source electrode of the N-channel field-effect tube is born as the second switch connecting pin with described
Interface electrical connection is carried, the grid of the N-channel field-effect tube is electrically connected as the switch controlled end with the switch control terminal.
3. control circuit according to claim 1, which is characterized in that
The discharge module includes NPN type triode and discharge current regulation resistance, the collector conduct of the NPN type triode
First electric discharge connecting pin is connected electrically on the tie point that the second switch connecting pin is electrically connected with the loading interfaces, institute
The emitting stage for stating NPN type triode is electrically connected as second electric discharge connecting pin with the ground terminal, the NPN type triode
Base stage is electrically connected with one end of the discharge current regulation resistance, is put described in the other end conduct of the discharge current regulation resistance
Electric controlled end is electrically connected with the discharge control terminal.
4. a kind of control system, which is characterized in that including claim 1-3 any one of them control circuit and load, institute
Control circuit is stated to connect by the loading interfaces and the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820199959.6U CN207896662U (en) | 2018-02-05 | 2018-02-05 | A kind of control circuit and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820199959.6U CN207896662U (en) | 2018-02-05 | 2018-02-05 | A kind of control circuit and control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207896662U true CN207896662U (en) | 2018-09-21 |
Family
ID=63544022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820199959.6U Active CN207896662U (en) | 2018-02-05 | 2018-02-05 | A kind of control circuit and control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207896662U (en) |
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2018
- 2018-02-05 CN CN201820199959.6U patent/CN207896662U/en active Active
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