CN208986852U - One kind preventing brushless motor common conduct circuit - Google Patents
One kind preventing brushless motor common conduct circuit Download PDFInfo
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- CN208986852U CN208986852U CN201821926798.2U CN201821926798U CN208986852U CN 208986852 U CN208986852 U CN 208986852U CN 201821926798 U CN201821926798 U CN 201821926798U CN 208986852 U CN208986852 U CN 208986852U
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- logic chip
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- brushless motor
- nand gate
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Abstract
The utility model, which provides one kind, prevents brushless motor common conduct circuit, is related to motor control technology field.This prevents the first logic chip of brushless motor, second logic chip, third logic chip and driving circuit are sequentially connected electrically, first logic chip with a signal source for being electrically connected, to receive three pairs of complementary signals of signal source input, first logic chip is for handling signal source, when complementary signal is common conduct signal, generate reverse signal, the signal that second logic chip is used to export signal source carries out reverse process, and signal is transmitted to third logic chip by treated, driving circuit is also used to be electrically connected with a brushless motor, driving circuit is used to control brushless motor work when third logic chip is in enabled state.It is provided by the utility model to prevent brushless motor common conduct circuit from having the advantages that prevent the power tube under common conduct phenomenon from burning out.
Description
Technical field
The utility model relates to motor control technology fields, prevent brushless motor common conduct in particular to one kind
Circuit.
Background technique
With the development and application of smart machine, brushless motor obtains more next as a kind of common motonsed actuating units
More extensive uses.Wherein in daily hardware debugging, since the circuit design of early period is improper or software entanglement and device
The reasons such as part sole mass, it sometimes appear that this phenomenon of common conduct, burns out so as to cause power tube.
It is the emphasis of those skilled in the art's concern in view of this, how to solve the above problems.
Utility model content
The purpose of this utility model is to provide one kind to prevent brushless motor common conduct circuit, to solve in the prior art
The problem of there is the phenomenon that common conduct in use in brushless motor, and power tube is caused to burn out.
The purpose of this utility model also reside in provide it is a kind of using the above-mentioned electronics for preventing brushless motor common conduct circuit
Device.
The utility model is realized in this way:
This implementation new embodiment, which provides one kind, prevents brushless motor common conduct circuit, described to prevent brushless motor total
State turning circuit includes the first logic chip, the second logic chip, third logic chip and driving circuit, first logic
Chip, second logic chip, the third logic chip and the driving circuit are sequentially connected electrically, first logic
Chip with a signal source for being electrically connected, to receive three pairs of complementary signals of the signal source input, first logic chip
For handling the signal source, using when the complementary signal is common conduct signal, reverse signal is generated, described the
The signal that two logic chips are used to export the signal source carries out reverse process, and treated that signal is transmitted to described the by general
Three logic chips, the driving circuit are also used to be electrically connected with a brushless motor, and the driving circuit in the third for patrolling
It collects and controls the brushless motor work when chip is in enabled state further, it is described to prevent brushless motor common conduct circuit
It further include Xiao Jite diode assembly, first logic chip, the Xiao Jite diode assembly and second logic
Chip is sequentially connected electrically.
Further, first logic chip includes the first NAND gate, the second NAND gate, third NAND gate and the 4th
First pair of complementary signal of NAND gate, the input terminal of first NAND gate and signal source connects, second NAND gate it is defeated
Second pair of complementary signal for entering end and signal source connects, and the input terminal of the third NAND gate is with the third of signal source to complementary letter
Number connection, the input terminal of the 4th NAND gate is unloaded, first NAND gate, second NAND gate, the third with it is non-
Door and the output end of the 4th NAND gate are electrically connected with the Xiao Jite diode assembly.
Further, the Xiao Jite diode assembly include first diode, the second diode, third diode and
The output end of 4th diode, first NAND gate is electrically connected with the cathode of the first diode, second NAND gate
Be electrically connected with the 4th diode, the output end of the third NAND gate is electrically connected with the cathode of the third diode,
The output end of 4th NAND gate is electrically connected with the cathode of second diode, the first diode, the described 2nd 2
Pole pipe, the third diode and the 4th diode anode respectively with a power supply and second logic chip
Electrical connection.
Further, second logic chip includes the first NOT gate, the input terminal of first NOT gate and described first
Diode, the second diode, third diode and the positive of the 4th diode are electrically connected, the output end of first NOT gate
It is electrically connected with the enable end of the third logic chip.
Further, described to prevent brushless motor common conduct circuit further include unit of warning, unit and the institute of warning
State the first logic chip electrical connection, it is described warn unit for there is common conduct signal in three pairs of complementary signals when into
Row is warned.
Further, it is described warn unit include the second NOT gate, resistance and light emitting diode, second NOT gate it is defeated
Enter end be electrically connected with the output end of first logic chip, it is the output end of second NOT gate and the resistance, described luminous
It is grounded after Diode series.
Further, the unit of warning further includes capacitor, the output end of one end of the capacitor and second NOT gate
Electrical connection, the other end ground connection of the capacitor.
Further, the model of first logic chip includes SN74HCT00PW, the model of second logic chip
Including SN74LVC2G04DBVR, the model of the third logic chip includes SN74HCT245PWR.
Further, the third logic chip is used to be in enabled state when enable end receives low level signal,
And for being in disabled state when enable end receives high level signal.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model, which provides one kind, prevents brushless motor common conduct circuit, this prevents brushless motor common conduct circuit
Including the first logic chip, the second logic chip, third logic chip and driving circuit, the first logic chip, the second logic
Chip, third logic chip and driving circuit are sequentially connected electrically, and the first logic chip with a signal source for being electrically connected, to connect
Three pairs of complementary signals of signal source input are received, the first logic chip is for handling signal source, to be total when complementary signal
When state Continuity signal, reverse signal is generated, the signal that the second logic chip is used to export signal source carries out reverse process, and will
Treated, and signal is transmitted to third logic chip, and driving circuit is also used to be electrically connected with a brushless motor, and driving circuit is used for
Brushless motor work is controlled when third logic chip is in enabled state.Wherein, due to believing in use, working as in brushless motor
Number source occur in any pair of complementary signal when there is common conduct signal, its first logic chip will carry out reversely it
Processing, the used time can be reversed again to signal by the second logic chip, and then receives the enable end of third logic chip and be
Forbidden energy signal, third logic chip are in off position, therefore avoid three pairs of complementary signals and directly pass through third logic core
There is common conduct phenomenon so as to cause entire circuit in piece, causes output high current that the power tube in driving circuit is burnt out.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.Therefore, below to attached
The detailed description of the embodiments of the present invention provided in figure is not intended to limit the range of claimed invention,
But it is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, belongs to the model of the utility model protection
It encloses.
Fig. 1, which is shown, prevents the module of brushless motor common conduct circuit from illustrating provided by the utility model embodiment
Figure.
Fig. 2 shows the schematic diagrams that brushless motor common conduct circuit is prevented provided by the utility model embodiment.
Fig. 3 shows the first logic core that brushless motor common conduct circuit is prevented provided by the utility model embodiment
The circuit diagram of piece and the second logic chip.
Fig. 4 shows the circuit diagram of third logic chip provided by the utility model embodiment.
Icon: 100- prevents brushless motor common conduct circuit；The first logic chip of 110-；The second logic chip of 120-；
130- third logic chip；140- driving circuit；150- Xiao Jite diode assembly；160- warns unit.
Specific embodiment
Below in conjunction with 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.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of the selected embodiment of the utility model.Based on the utility model
Embodiment, those skilled in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
With reference to the accompanying drawing, it elaborates to some embodiments of the utility model.In the absence of conflict, under
The feature in embodiment and embodiment stated can be combined with each other.
First embodiment
Referring to Fig. 1, the utility model embodiment, which provides one kind, prevents brushless motor common conduct circuit 100, this is anti-
Only brushless motor common conduct circuit 100 includes the first logic chip 110, Xiao Jite diode assembly 150, the second logic chip
120, third logic chip 130 and driving circuit 140, the first logic chip 110, Xiao Jite diode assembly 150, second are patrolled
Chip 120, third logic chip 130 and driving circuit 140 is collected to be sequentially connected electrically.
In the present embodiment, the model SN74HCT00PW of the first logic chip 110, the model of the second logic chip 120
For SN74LVC2G04DBVR, the model SN74HCT245PWR of third logic chip 130.Of course, in some other realities
It applies in example, the logic chip of other signals also can be used, the present embodiment does not do any restriction to this.Also, the first logic
Chip 110 with a signal source for being electrically connected, and to receive three pairs of complementary signals of signal source input, the first logic chip 110 is used
It is handled in signal source, to generate reverse signal, the second logic chip 120 when complementary signal is common conduct signal
Signal for exporting to signal source carries out reverse process, and signal is transmitted to third logic chip 130 by treated, simultaneously
Driving circuit 140 is also used to be electrically connected with a brushless motor, and driving circuit 140 is used to be in enabled in third logic chip 130
Brushless motor work is controlled when state, and when third logic chip 130 is under disabled state, driving circuit 140 will not work
Make, so as to avoid when there is common conduct phenomenon, third logic chip 130 will not export high current driving circuit 140
In power tube the case where burning out, and then protect the power tube in driving circuit 140.
Specifically, in the present embodiment, common conduct refers to for same a pair of of complementary signal of signal source, when two mutually
When complement signal is high level signal, as common conduct state at this time, when third logic chip 130 is according to common conduct state
Signal when being worked, then can go out high current, the metal-oxide-semiconductor that may result in driving circuit 140 is burnt out.The present embodiment provides
The first logic chip 110 include the first NAND gate, the second NAND gate, third NAND gate and the 4th NAND gate, first with it is non-
The input terminal of door and first pair of complementary signal of signal source connect, and second pair of the input terminal of the second NAND gate and signal source is complementary
Signal connection, the input terminal of third NAND gate and the third of signal source connect complementary signal, and the input terminal of the 4th NAND gate is empty
Carry, wherein the first NAND gate, the second NAND gate, third NAND gate and the 4th NAND gate output end with bis- pole Xiao Jite
Tube assembly 150 is electrically connected.Meanwhile complementary signal described in the present embodiment is complementary pwm signal.
When two signals are high level in a pair of of complementary signal, according to the principle of NAND gate it is found that NAND gate it is defeated
Outlet can export low level, and when any one signal is that place is flat in two signals in a pair of of complementary signal, by with it is non-
Two signals of goalkeeper are done in doing non-post again, and the output end of NAND gate can export high level.
Meanwhile low level signal is also being to maintain low level state, high level signal after Schottky diode component
High level state is also being to maintain after Schottky diode component.Wherein, the Schottky diode component of the present embodiment
Model BAS70-06 in some other embodiments, also can be used other models and see of course, the present embodiment pair
This does not do any restriction.
Specifically, Xiao Jite diode assembly 150 includes first diode, the second diode, third diode and the
Four diodes, the output end of the first NAND gate are electrically connected with the cathode of first diode, the second NAND gate with the 4th diode
Electrical connection, the output end of third NAND gate are electrically connected with the cathode of third diode, the output end and the two or two of the 4th NAND gate
The cathode of pole pipe is electrically connected, first diode, the second diode, third diode and the 4th diode anode respectively with
One power supply and the electrical connection of the second logic chip 120.
Meanwhile second logic chip 120 include the first NOT gate, the input terminal of the first NOT gate and first diode, the two or two
The anode of pole pipe, third diode and the 4th diode is electrically connected, the output end and third logic chip 130 of the first NOT gate
Enable end electrical connection.
According to the working principle of NOT gate, when input terminal is low level signal, then output end is high level signal, and when defeated
Enter end be high level signal when, then output end be low level signal.In the present embodiment, the enable end of third logic chip 130
For high level forbidden energy, low level is enabled.When enable end receives low level signal, third logic chip 130 is worked normally, and
And output electric current, so that driving circuit 140 works, driving brushless motor works, and when enable end receives high level signal,
Third logic chip 130 is in off position, and third logic chip 130 will not output current to driving circuit 140 at this time, into
And protect the metal-oxide-semiconductor of driving circuit 140.
Further, in the present embodiment, occurs common conduct in circuit to enable staff to understand in time
The case where, in the present embodiment, preventing brushless motor common conduct circuit 100 further includes unit 160 of warning, unit 160 of warning
It is electrically connected with the first logic chip 110, unit 160 of warning in three pairs of complementary signals for common conduct signal when progress occur
It warns.
Specifically, unit 160 of warning include the second NOT gate, resistance and light emitting diode, the input terminal of the second NOT gate with
The output end of first logic chip 110 is electrically connected, and the output end of the second NOT gate is grounded after connecting with resistance, light emitting diode.When
When common conduct state occurs in circuit, then there is electric current to flow through in light emitting diode, light emitting diode is lighted at this time, can make work
Even if personnel understand circuit conditions, and make corresponding measure.
Further, unit 160 of warning further includes capacitor, and one end of capacitor is electrically connected with the output end of the second NOT gate, electricity
The other end of appearance is grounded.Wherein, capacitor can play the role of filtering, meanwhile, one end of capacitor is also connect with non-working port, into
And fault message can be uploaded.
In conclusion the utility model, which provides one kind, prevents brushless motor common conduct circuit, this prevents brushless motor total
State turning circuit includes the first logic chip, the second logic chip, third logic chip and driving circuit, the first logic core
Piece, the second logic chip, third logic chip and driving circuit are sequentially connected electrically, and the first logic chip is used for and a signal source
Electrical connection, to receive three pairs of complementary signals of signal source input, the first logic chip is for handling signal source, when mutual
When complement signal is common conduct signal, reverse signal is generated, the signal that the second logic chip is used to export signal source carries out anti-
To processing, and by treated, signal is transmitted to third logic chip, and driving circuit is also used to be electrically connected with a brushless motor, drives
Dynamic circuit is used to control brushless motor work when third logic chip is in enabled state.Wherein, due in brushless motor
In use, when common conduct signal occurs in any pair of complementary signal in signal source appearance, it will to its first logic chip
Reverse process is carried out to it, the used time can be reversed again to signal by the second logic chip, and then makes the enabled of third logic chip
It is forbidden energy signal that termination, which receives, and third logic chip is in off position, therefore it is directly logical to avoid three pairs of complementary signals
It crosses third logic chip and common conduct phenomenon occurs so as to cause entire circuit, lead to export high current the function in driving circuit
Rate pipe is burnt out.
In the description of the present invention, it should be noted that term " first ", " second ", " third ", " the 4th " etc. only
It is described for distinguishing, is not understood to indicate or imply relative importance.The foregoing is merely the preferred realities of the utility model
Example is applied, is not intended to limit the utility model, for those skilled in the art, the utility model can have various
Change and variation.Within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done, should all
It is included within the scope of protection of this utility model.
Claims (10)
1. one kind prevents brushless motor common conduct circuit, which is characterized in that described to prevent brushless motor common conduct circuit packet
Include the first logic chip, the second logic chip, third logic chip and driving circuit, first logic chip, described
Two logic chips, the third logic chip and the driving circuit are sequentially connected electrically, first logic chip be used for
The electrical connection of one signal source, to receive three pairs of complementary signals of the signal source input, first logic chip is used for described
Signal source is handled, to generate reverse signal, second logic chip when the complementary signal is common conduct signal
Signal for exporting to the signal source carries out reverse process, and signal is transmitted to the third logic core by treated
Piece, the driving circuit are also used to be electrically connected with a brushless motor, and the driving circuit is used at the third logic chip
The brushless motor work is controlled when enabled state.
2. preventing brushless motor common conduct circuit as described in claim 1, which is characterized in that described to prevent brushless motor total
State turning circuit further includes Xiao Jite diode assembly, first logic chip, the Xiao Jite diode assembly and institute
The second logic chip is stated to be sequentially connected electrically.
3. preventing brushless motor common conduct circuit as claimed in claim 2, which is characterized in that the first logic chip packet
Include the first NAND gate, the second NAND gate, third NAND gate and the 4th NAND gate, the input terminal and signal of first NAND gate
First pair of complementary signal in source connects, and the input terminal of second NAND gate and second pair of complementary signal of signal source connect, institute
The third of the input terminal and signal source of stating third NAND gate connects complementary signal, and the input terminal of the 4th NAND gate is unloaded,
First NAND gate, second NAND gate, the third NAND gate and the 4th NAND gate output end and institute
State the electrical connection of Xiao Jite diode assembly.
4. preventing brushless motor common conduct circuit as claimed in claim 3, which is characterized in that the Xiao Jite diode group
Part includes first diode, the second diode, third diode and the 4th diode, the output end of first NAND gate with
The cathode of the first diode is electrically connected, and second NAND gate be electrically connected with the 4th diode, the third and
The output end of NOT gate is electrically connected with the cathode of the third diode, the output end of the 4th NAND gate and the two or two pole
The cathode of pipe is electrically connected, the first diode, second diode, the third diode and the 4th diode
Anode be electrically connected respectively with a power supply and second logic chip.
5. preventing brushless motor common conduct circuit as claimed in claim 4, which is characterized in that the second logic chip packet
Include the first NOT gate, the input terminal and the first diode, the second diode, third diode and the 4th of first NOT gate
The anode of diode is electrically connected, and the output end of first NOT gate is electrically connected with the enable end of the third logic chip.
6. preventing brushless motor common conduct circuit as described in claim 1, which is characterized in that described to prevent brushless motor total
State turning circuit further includes unit of warning, and the unit of warning is electrically connected with first logic chip, the unit use of warning
It warns when there is common conduct signal in three pairs of complementary signals.
7. preventing brushless motor common conduct circuit as claimed in claim 6, which is characterized in that the unit of warning includes the
Two NOT gates, resistance and light emitting diode, the input terminal of second NOT gate and the output end of first logic chip are electrically connected
It connects, the output end of second NOT gate is grounded after connecting with the resistance, the light emitting diode.
8. preventing brushless motor common conduct circuit as claimed in claim 7, which is characterized in that the unit of warning further includes
Capacitor, one end of the capacitor are electrically connected with the output end of second NOT gate, the other end ground connection of the capacitor.
9. preventing brushless motor common conduct circuit as described in claim 1, which is characterized in that first logic chip
Model includes SN74HCT00PW, and the model of second logic chip includes SN74LVC2G04DBVR, the third logic core
The model of piece includes SN74HCT245PWR.
10. preventing brushless motor common conduct circuit as described in claim 1, which is characterized in that the third logic chip
For being in enabled state when enable end receives low level signal, and it is used at when enable end receives high level signal
In disabled state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821926798.2U CN208986852U (en) | 2018-11-21 | 2018-11-21 | One kind preventing brushless motor common conduct circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821926798.2U CN208986852U (en) | 2018-11-21 | 2018-11-21 | One kind preventing brushless motor common conduct circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208986852U true CN208986852U (en) | 2019-06-14 |
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ID=66791297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821926798.2U Active CN208986852U (en) | 2018-11-21 | 2018-11-21 | One kind preventing brushless motor common conduct circuit |
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| Country | Link |
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| CN (1) | CN208986852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245625A (en) * | 2018-11-21 | 2019-01-18 | 广东嘉腾机器人自动化有限公司 | One kind preventing brushless motor common conduct circuit |
-
2018
- 2018-11-21 CN CN201821926798.2U patent/CN208986852U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245625A (en) * | 2018-11-21 | 2019-01-18 | 广东嘉腾机器人自动化有限公司 | One kind preventing brushless motor common conduct circuit |
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