CN208186450U - Electric-control system and bull electric ceramic heaters - Google Patents
Electric-control system and bull electric ceramic heaters Download PDFInfo
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- CN208186450U CN208186450U CN201820271693.1U CN201820271693U CN208186450U CN 208186450 U CN208186450 U CN 208186450U CN 201820271693 U CN201820271693 U CN 201820271693U CN 208186450 U CN208186450 U CN 208186450U
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Abstract
It includes: main control unit and relay drive unit that the utility model, which provides a kind of electric-control system and bull electric ceramic heaters, the electric-control system,；Main control unit includes a main control chip；Relay drive unit includes N number of input port, N number of relay drive circuit and N number of output port；Each input port is connected with the input terminal of corresponding relay drive circuit, and the output end of each relay drive circuit is connected with corresponding output port；N number of input port is spaced one from arrangement, and N number of output port is connect with N number of stone or metal plate for standing a stove on as a precaution against fire relay respectively；Main control chip is connect with N number of input port one to one by interface unit, and inputs the shutdown that square wave control signal realizes each stone or metal plate for standing a stove on as a precaution against fire relay being separately connected with N number of output port to N number of input port one to one by interface unit.Electric-control system provided by the utility model can be improved the fault-tolerance between main control unit and relay drive unit, avoid the occurrence of stone or metal plate for standing a stove on as a precaution against fire power by low high jump phenomenon.
Description
Technical field
The utility model relates to intelligent electric appliance technical fields, and in particular to a kind of electric-control system and bull electric ceramic heaters.
Background technique
The electric-control system of existing bull electric ceramic heaters includes two parts of power panel and display board.Main control unit is located at display board
On, power panel is made of Switching Power Supply and relay drive unit.By the output signal of display board control on power panel after
Actuation/shutdown of electrical apparatus driving circuit realization relay.In existing relay driving scheme, display board utilizes interface unit three
74HC595C on line traffic control power panel drives relay control coil by ULN2003 or triode.Existing bull electricity pottery
The automatically controlled solution principle block diagram of furnace electric-control system is as shown in Figure 1, its circuit connection schematic diagram is as shown in Figure 2.Existing bull electricity pottery
The automatically controlled scheme of furnace electric-control system has the disadvantage in that uses three-wire system to control between main control unit and relay drive unit,
Error resilience performance is limited.When 74HC595C pin is shorted, it may appear that the phenomenon that stone or metal plate for standing a stove on as a precaution against fire power is by low high jump, this does not meet newly
IEC standard.
Utility model content
For the defects in the prior art, the utility model provides a kind of electric-control system and bull electric ceramic heaters, this is practical new
The electric-control system that type provides, can be improved the fault-tolerance between main control unit and relay drive unit, avoids the occurrence of stone or metal plate for standing a stove on as a precaution against fire function
Rate is by low high jump phenomenon.
To achieve the above object, the utility model the following technical schemes are provided:
In a first aspect, the utility model provides a kind of electric-control system, comprising: display board and power panel；The display board
On be provided with main control unit, be provided with relay drive unit on the power panel；The relay drive unit is for controlling
The shutdown of each stone or metal plate for standing a stove on as a precaution against fire relay；Main control unit on the display board be used to export control signal control on the power panel after
Electrical equipment drive unit is to realize the shutdown of each stone or metal plate for standing a stove on as a precaution against fire relay；
Wherein, the main control unit includes a main control chip, and the relay drive unit includes N number of input port, N number of
Relay drive circuit and N number of output port；Wherein, an input port corresponds to a relay drive circuit and one defeated
Exit port；Each input port is connected with the input terminal of corresponding relay drive circuit, each relay drive circuit
Output end connected with the corresponding output port；Wherein, N number of input port is spaced one from arrangement, N number of output
Port is connect with N number of stone or metal plate for standing a stove on as a precaution against fire relay respectively, N >=2；
The main control chip is connect with N number of input port one to one by interface unit, and passes through the connection
What device was separately connected to N number of input port input square wave control signal realization with N number of output port one to one
The shutdown of each stone or metal plate for standing a stove on as a precaution against fire relay.
Further, the relay drive circuit is realized by the way of the double devices in series of triode；Wherein, it is described after
Electrical apparatus driving circuit includes the first triode and the second triode, the base stage of first triode and second triode
Base stage connection, the emitter of first triode are connect with the collector of second triode, second triode
Emitter ground connection.
Further, reference clock signal is additionally provided in the electric-control system, the reference clock signal is used for conduct
Calibration signal is to monitor the system clock in the main control chip whether normal operation.
Further, the electric-control system further includes that key touches chip, and it is described for exporting that the key touches chip
Reference clock signal.
Further, the main control unit is exported for reference clock signal and the system clock described in real time contrast
Whether clock signal of system is consistent, if inconsistent, control complete machine and shuts down and stop power output.
Further, the reference clock signal is the square-wave signal of 50HZ.
Further, the main control unit controls the unlatching of each stone or metal plate for standing a stove on as a precaution against fire relay by the way of Time-sharing control.
Further, in the case where each stone or metal plate for standing a stove on as a precaution against fire meets default heated condition, the main control unit is within a time cycle to each
The unlatching of stone or metal plate for standing a stove on as a precaution against fire relay carries out Time-sharing control.
Further, the value of N is 7.
Second aspect, the utility model additionally provides a kind of bull electric ceramic heaters, including the electricity as described in first aspect above
Control system.
As shown from the above technical solution, the utility model at least have it is following the utility model has the advantages that
1, in the present invention, the main control chip on display board controls each stone or metal plate for standing a stove on as a precaution against fire relay by interface unit one to one
Device, and the I/O port of N number of relay drive circuit is spaced one from arrangement, therefore being shorted adjacent leads is not in stone or metal plate for standing a stove on as a precaution against fire by low grade
High jump shelves.Namely the utility model improves the fault-tolerance between main control unit and relay drive unit, when control terminal is adjacent
Pin is not in stone or metal plate for standing a stove on as a precaution against fire power by low high jump phenomenon when being shorted, and meets new IEC standard.
2, in the present invention, relay drive circuit is by the way of the double devices in series of triode, when single device
Pin short circuit not will cause stone or metal plate for standing a stove on as a precaution against fire error starting, improves safety and meets new IEC standard.
3, in the present invention, using doubleclocking scheme, a clock is that system runs clock, and another clock is as benchmark
Clock monitors system operation clock in real time, can effectively improve system run all right and safety.
4, in the present invention, controlling stone or metal plate for standing a stove on as a precaution against fire unlatching by Time-sharing control method can be effectively reduced power supply line band load pressure
Power reduces temperature rise, promotes Product Safety.
Certainly, implement either the utility model method or product is not necessarily required to reach all the above excellent simultaneously
Point.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the functional block diagram of the automatically controlled scheme of existing bull electric ceramic heaters electric-control system；
Fig. 2 is the circuit connection schematic diagram of the automatically controlled scheme of existing bull electric ceramic heaters electric-control system；
Fig. 3 is the functional block diagram of electric-control system provided by the embodiment of the utility model；
Fig. 4 is relay drive circuit schematic diagram provided by the embodiment of the utility model；
Fig. 5 is main control chip clock signal schematic diagram in the prior art；
Fig. 6 is main control chip clock scheme schematic diagram provided by the embodiment of the utility model.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical solutions in the embodiments of the present invention are clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Following disclosure provides many different embodiments or example is used to realize the different structure of the utility model.For
The disclosure of simplified the utility model, is hereinafter described the component of specific examples and setting.Certainly, they are only and show
Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals
And/or letter.This repetition is for purposes of simplicity and clarity, itself not indicate discussed various embodiments and/or set
Relationship between setting.In addition, structure of the fisrt feature described below in the "upper" of second feature may include first and second
Feature is formed as the embodiment directly contacted, also may include the implementation that other feature is formed between the first and second features
Example, such first and second feature may not be direct contact.In the description of the present invention, it should be noted that unless
It states otherwise and limits, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being mechanically connected or being electrically connected
Connect, the connection being also possible to inside two elements can be directly connected, can also indirectly connected through an intermediary, for
For those skilled in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Existing or related skill is simply introduced first before the electric-control system that description the utility model embodiment proposes
Control program used by bull electric ceramic heaters electric-control system in art.
In existing or bull electric ceramic heaters electric-control system in the related technology, display board utilizes three line traffic control power supply of interface unit
74HC595C on plate drives relay control coil by ULN2003 or triode.Existing bull electric ceramic heaters electric-control system
Automatically controlled solution principle block diagram as shown in Figure 1, its circuit connection schematic diagram is as shown in Figure 2.Existing bull electric ceramic heaters electric-control system
Automatically controlled scheme have the disadvantage in that and control between main control unit and relay drive unit using three-wire system that error resilience performance has
Limit.When 74HC595C pin is shorted, it may appear that the phenomenon that stone or metal plate for standing a stove on as a precaution against fire power is by low high jump, this does not meet new IEC standard.
The utility model embodiment is based on the above reason and proposes a kind of electric-control system for meeting new IEC standard,
Electric-control system provided by the embodiment of the utility model can be improved the fault-tolerance between main control unit and relay drive unit,
Avoid the phenomenon that stone or metal plate for standing a stove on as a precaution against fire power is by low high jump occur when control terminal adjacent leads are shorted.Electricity provided by the embodiment of the utility model
Control system is suitable for the control of electric ceramic heaters, is particularly suitable for the control of bull electric ceramic heaters.
Electric-control system provided by the embodiment of the utility model described with reference to the accompanying drawings.Fig. 3 is according to the utility model
The functional block diagram for the electric-control system that embodiment provides.As shown in figure 3, the electric-control system includes: display board and power panel；It is described aobvious
Show and be provided with main control unit on plate, is provided with relay drive unit on the power panel；The relay drive unit is used for
Control the shutdown of each stone or metal plate for standing a stove on as a precaution against fire relay；Main control unit on the display board controls the power panel for exporting control signal
Relay drive unit to realize the shutdown of each stone or metal plate for standing a stove on as a precaution against fire relay；
Wherein, the main control unit includes a main control chip (not shown), and the relay drive unit includes N
(being introduced by taking N=7 as an example in Fig. 3) a input port, N number of relay drive circuit and N number of output port；Wherein, one
The corresponding relay drive circuit of input port and an output port；Each input port and corresponding relay
The input terminal of driving circuit connects, and the output end of each relay drive circuit is connected with the corresponding output port；Wherein,
N number of input port is spaced one from arrangement, and N number of output port is connect with N number of stone or metal plate for standing a stove on as a precaution against fire relay respectively, N >=2；
The main control chip is connect with N number of input port one to one by interface unit, and passes through the connection
What device was separately connected to N number of input port input square wave control signal realization with N number of output port one to one
The shutdown of each stone or metal plate for standing a stove on as a precaution against fire relay.
In the utility model embodiment, the value of N can be carried out according to the practical electric ceramic heaters head number in bull electric ceramic heaters
Setting or change.For example, N can take 2,3,4,5,6,7 equivalences.
As seen from the above description, compared with 3 pair 8 of relay driving mode of 74HC595C device before, this is practical new
The electric-control system that type embodiment provides controls each stone or metal plate for standing a stove on as a precaution against fire relay by interface unit using display board main control chip one to one,
And relay control waveform is changed to square-wave signal driving by level driving before, in addition, the end IO of relay drive circuit
It is mouthful arranged apart, when other square waves and similar square-wave signal being separated, therefore avoiding control terminal adjacent leads and is shorted test, furnace
The problem of disk power jumps.Namely the utility model embodiment can be improved between main control unit and relay drive unit
Fault-tolerance, be not in the phenomenon that stone or metal plate for standing a stove on as a precaution against fire power is by low high jump when control terminal adjacent leads are shorted, therefore meet new IEC mark
It is quasi-.
Further, in existing bull electric ceramic heaters control program, relay drive unit generally use ULN2003 or
Triode driving method will cause the error starting of stone or metal plate for standing a stove on as a precaution against fire when adjacent pin is shorted in this case, hence it is evident that not meet new
IEC standard.To solve this problem, in a kind of preferred embodiment of the present embodiment, the relay drive circuit uses three
The mode of the double devices in series of pole pipe is realized.As shown in figure 4, the relay drive circuit includes the first triode Q101 and second
Triode Q102, the base stage B of the first triode Q101 are connected with the base stage B of the second triode Q102, and described first
The emitter E of triode Q101 is connect with the collector C of the second triode Q102, the transmitting of the second triode Q102
Pole E ground connection.
As it can be seen that in the preferred embodiment, relay drive circuit is changed to double-triode valve by individual devices before
Devices in series control mode (circuit diagram is as shown in Figure 4).For example, when triode C with E is extremely short connect when be not in burner error starting
Phenomenon.Therefore, in this preferred embodiment, relay drive circuit uses the control mode of double-triode valve devices in series, can be with
It effectively prevent the stone or metal plate for standing a stove on as a precaution against fire error starting problem occurred because pin is shorted.
Further, in existing bull electric ceramic heaters control program, main control chip clock signal is provided by outside, is single
One system clock, no another clock monitor system operation clock in real time as reference clock.Master control in the prior art
Clock signal chip schematic diagram is as shown in Figure 5.When system clock frees failure, entire control system failure will cause.For solution
The certainly problem is additionally provided with reference clock signal, institute in a kind of preferred embodiment of the present embodiment in the electric-control system
Reference clock signal is stated to be used for as calibration signal to monitor the system clock in the main control chip whether normal operation.Example
Such as, the main control unit is for the clock signal of system of reference clock signal described in real time contrast and system clock output
It is no consistent, if inconsistent, control complete machine and shut down and stop power output.It is understood that due to system clock output
Clock signal of system is a square-wave signal, therefore to realize that calibration and monitoring function, the reference clock signal are also square wave letter
Number, such as the reference clock signal is also the square-wave signal of a 50HZ.
As it can be seen that in the preferred embodiment, increasing another way clock input signal, the clock as software authentication program newly
Monitoring signals.Electric-control system i.e. in the present embodiment configures doubleclocking.As shown in fig. 6, being inputted in original clock signal of system
On the basis of (in Fig. 6 P00 and P01 pin), touch the square-wave signal of chip output 50HZ as the benchmark of system using key
Clock signal (P13 pin in Fig. 6) when the system clock in main control chip becomes faster, slack-off and phenomena such as stop, or is worked as
Touch chip output square-wave signal frequency variation phenomena such as, machine system all by assert be main control chip system clock it is different
Often, complete machine is shut down at this time and stops power output.As it can be seen that being to improve using doubleclocking scheme in this preferred embodiment
System operation stability and safety.
Further, in existing bull electric ceramic heaters control program, power supply line band is loaded with pressure, bifurcated mouth temperature increases,
Cause the loss of power supply line more serious, and there are security risks.To solve this problem, in a kind of preferred implementation of the present embodiment
In mode, the main control unit controls the unlatching of each stone or metal plate for standing a stove on as a precaution against fire relay by the way of Time-sharing control.For example, meeting in each stone or metal plate for standing a stove on as a precaution against fire
Under default heated condition, the main control unit carries out Time-sharing control to the unlatching of each stone or metal plate for standing a stove on as a precaution against fire relay within a time cycle.
That is, for multiple stone or metal plate for standing a stove on as a precaution against fire relays, the mode driven using timesharing, i.e., in the case of fixed for driving time summation
Under, the total driving time of multiple stone or metal plate for standing a stove on as a precaution against fire relay joint distributions carries out timesharing and drives each stone or metal plate for standing a stove on as a precaution against fire relay.It is driven using this timesharing
Dynamic mode can be effectively reduced power supply line band and carry pressure, reduces temperature rise.In specific implementation, software control journey can be passed through
Sequence carries out Time-sharing control.
As it can be seen that in the preferred embodiment, controlling stone or metal plate for standing a stove on as a precaution against fire unlatching by Time-sharing control method can be effectively reduced power supply
Tape carries pressure, reduces temperature rise, promotes Product Safety.
It should be noted that multiple preferred embodiments given by the present embodiment, do not conflict mutually in logic or structure
Under the premise of, it can be freely combined, the utility model does not limit this.
Based on identical design, another embodiment of the utility model provides a kind of bull electric ceramic heaters, the bull electric ceramic heaters
Including the electric-control system as described in above example.
It is understood that since bull electric ceramic heaters provided in this embodiment include automatically controlled system described in above example
System, thus bull electric ceramic heaters provided in this embodiment at least have it is following similar the utility model has the advantages that
1, bull electric ceramic heaters provided in this embodiment improve fault-tolerant between main control unit and relay drive unit
Property, be not in stone or metal plate for standing a stove on as a precaution against fire power by low high jump phenomenon when control terminal adjacent leads are shorted, meet new IEC standard.
2, bull electric ceramic heaters provided in this embodiment, relay drive circuit by the way of the double devices in series of triode,
It not will cause stone or metal plate for standing a stove on as a precaution against fire error starting when single device pin is shorted, improve safety and meet new IEC standard.
3, bull electric ceramic heaters provided in this embodiment, using doubleclocking scheme, a clock is that system runs clock, Ling Yishi
Clock monitors system operation clock in real time as reference clock, can effectively improve system run all right and safety.
4, bull electric ceramic heaters provided in this embodiment, controlling stone or metal plate for standing a stove on as a precaution against fire unlatching by Time-sharing control method can be effectively reduced electricity
Source tape carries pressure, reduces temperature rise, promotes Product Safety.
Certainly, bull electric ceramic heaters provided in this embodiment are not necessarily required to reach all the above advantage simultaneously.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
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
Stating 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 embodiment or examples.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is by appended claims and its equivalent limits.
Claims (9)
1. a kind of electric-control system characterized by comprising display board and power panel；It is provided with main control unit on the display board,
Relay drive unit is provided on the power panel；The relay drive unit is used to control the pass of each stone or metal plate for standing a stove on as a precaution against fire relay
It is disconnected；Main control unit on the display board, which is used to export, to be controlled signal and controls relay drive unit on the power panel with reality
The now shutdown of each stone or metal plate for standing a stove on as a precaution against fire relay；
Wherein, the main control unit includes a main control chip, and the relay drive unit includes N number of input port, N number of relay
Device driving circuit and N number of output port；Wherein, a corresponding relay drive circuit of input port and an output end
Mouthful；The input terminal of each input port and corresponding relay drive circuit connects, each relay drive circuit it is defeated
Outlet is connected with the corresponding output port；Wherein, N number of input port is spaced one from arrangement, N number of output port
It is connect respectively with N number of stone or metal plate for standing a stove on as a precaution against fire relay, N >=2；
The main control chip is connect with N number of input port one to one by interface unit, and passes through the interface unit
Each furnace being separately connected with N number of output port is realized to N number of input port input square wave control signal one to one
The shutdown of disk relay.
2. electric-control system according to claim 1, which is characterized in that the relay drive circuit is using the double devices of triode
The concatenated mode of part is realized；Wherein, the relay drive circuit include the first triode and the second triode, the described 1st
The base stage of pole pipe is connected with the base stage of second triode, the emitter of first triode and second triode
Collector connection, the emitter ground connection of second triode.
3. electric-control system according to claim 1, which is characterized in that be additionally provided with reference clock letter in the electric-control system
Number, the reference clock signal is used for as calibration signal to monitor whether the system clock in the main control chip is normally transported
Row.
4. electric-control system according to claim 3, which is characterized in that the electric-control system further includes that key touches chip,
The key touches chip for exporting the reference clock signal.
5. electric-control system according to claim 3 or 4, which is characterized in that the reference clock signal is the square wave of 50HZ
Signal.
6. electric-control system according to claim 1, which is characterized in that main control unit control by the way of Time-sharing control
Make the unlatching of each stone or metal plate for standing a stove on as a precaution against fire relay.
7. electric-control system according to claim 6, which is characterized in that described in the case where each stone or metal plate for standing a stove on as a precaution against fire meets default heated condition
Main control unit carries out Time-sharing control to the unlatching of each stone or metal plate for standing a stove on as a precaution against fire relay within a time cycle.
8. electric-control system according to any one of claims 1 to 4, which is characterized in that the value of N is 7.
9. a kind of bull electric ceramic heaters, which is characterized in that including electric-control system as described in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820271693.1U CN208186450U (en) | 2018-02-26 | 2018-02-26 | Electric-control system and bull electric ceramic heaters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820271693.1U CN208186450U (en) | 2018-02-26 | 2018-02-26 | Electric-control system and bull electric ceramic heaters |
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| Publication Number | Publication Date |
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| CN208186450U true CN208186450U (en) | 2018-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224498A (en) * | 2018-02-26 | 2018-06-29 | 广东美的厨房电器制造有限公司 | Electric-control system and bull electric ceramic heaters |
-
2018
- 2018-02-26 CN CN201820271693.1U patent/CN208186450U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224498A (en) * | 2018-02-26 | 2018-06-29 | 广东美的厨房电器制造有限公司 | Electric-control system and bull electric ceramic heaters |
| CN108224498B (en) * | 2018-02-26 | 2024-08-06 | 佛山市顺德区美的电热电器制造有限公司 | Electric control system and multi-head electroceramic stove |
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