CN106469628A - For the protection control method of relay, device - Google Patents
For the protection control method of relay, device Download PDFInfo
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- CN106469628A CN106469628A CN201510504520.0A CN201510504520A CN106469628A CN 106469628 A CN106469628 A CN 106469628A CN 201510504520 A CN201510504520 A CN 201510504520A CN 106469628 A CN106469628 A CN 106469628A
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- relay
- voltage
- control
- drive module
- module
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
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Abstract
The invention discloses a kind of protection control device for relay, including：First drive module；First detection module, first detection module is used for detecting the voltage of the first end of relay coil to obtain first voltage；Second drive module；Second detection module, the second detection module is used for detecting the voltage at the second end of relay coil to obtain second voltage；Control module; control module according to first voltage and second voltage and exports the first drive module and the control signal of the second drive module judges whether the current control circuit of relay lost efficacy, and relay is carried out protect control by controlling the first drive module and the second drive module when the current control circuit judging relay loses efficacy.This protection control device can be protected to relay when the control circuit of relay loses efficacy, and improves the reliability of relay.The invention also discloses a kind of protection control method for relay.
Description
Technical field
The present invention relates to relay technical field, particularly to a kind of protection control device for relay and a kind of use
Protection control method in relay.
Background technology
At present, the product being controlled heating using relay is relatively more, but, when the control circuit of relay lost efficacy,
It is likely to make relay be constantly in conducting state to be heated to load, thus bringing potential safety hazard.
Content of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, it is an object of the present invention to proposing a kind of protection control device for relay, can be in relay
Control circuit lost efficacy when relay is protected, improve the reliability of relay.
Further object is that proposing a kind of protection control method for relay.
For reaching above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of protection control device for relay, bag
Include：First drive module, described first drive module is connected with the first end of relay coil；First detection module, institute
The first end stating first detection module with described relay coil is connected, and described first detection module is used for detecting described relay
The voltage of the first end of device coil is to obtain first voltage；Second drive module, described second drive module and described relay
Second end of device coil is connected；Second detection module, the second end phase of described second detection module and described relay coil
Even, described second detection module is used for detecting the voltage at the second end of described relay coil to obtain second voltage；Control
Module, described control module respectively with described first drive module, described first detection module, described second drive module
It is connected with described second detection module, described control module according to described first voltage and described second voltage and exports
The control signal of described first drive module and described second drive module judges that the current control circuit of described relay is
No inefficacy, and when the current control circuit judging described relay lost efficacy by controlling described first drive module and described
Second drive module is to carry out to described relay protecting control.
Protection control device for relay according to embodiments of the present invention, detects relay line by first detection module
The voltage of the first end of circle is to obtain first voltage, and detects the electricity at the second end of relay coil by the second detection module
To obtain second voltage, control module according to first voltage and second voltage and exports the first drive module and second to pressure
The control signal of drive module judges whether the current control circuit of relay lost efficacy, and is judging the current control of relay
Pass through during circuit malfunction to control the first drive module and the second drive module relay to be carried out protect control, thus effectively
Improve the reliability of relay.
According to one embodiment of present invention, when described control module according to described first voltage and exports described first drive
When the control signal of dynamic model block judges that the first end of described relay coil is out of control, wherein, described control module is passed through to control
Described second drive module is so that described first voltage and described second voltage are equal, to turn off described relay；Or institute
State the second end that control module controls described relay coil by described second drive module, so that described relay is in
Normal on or off state.
According to another embodiment of the invention, when described control module according to described second voltage and exports described second
When the control signal of drive module judges that the second end of described relay coil is out of control, wherein, described control module passes through control
Make described first drive module so that described first voltage and described second voltage are equal, to turn off described relay；Or
Described control module controls the first end of described relay coil by described first drive module, so that at described relay
In normal on or off state.
In some embodiments of the invention, the circuit structure phase of described first drive module and described second drive module
With.
According to one embodiment of present invention, described first drive module specifically includes：First resistor, described first resistor
One end be connected with described control module；First switch pipe, the first end of described first switch pipe and described first resistor
The other end is connected, and the second end of described first switch pipe is connected with default power supply；Second resistance, the one of described second resistance
End is connected with described control module；Second switch pipe, the first end of described second switch pipe is another with described second resistance
End is connected, and the second end of described second switch pipe is connected with the 3rd end of described first switch pipe, described second switch pipe
3rd end ground connection, wherein, has first between the 3rd end of the second end of described second switch pipe and described first switch pipe
Node, described primary nodal point is connected with the first end of described relay coil.
Preferably, described first switch pipe and described second switch pipe can be audion or metal-oxide-semiconductor.
For reaching above-mentioned purpose, another aspect of the present invention embodiment proposes a kind of protection control method for relay,
The protection control device of described relay includes the first drive module and the second drive module, described first drive module with continue
The first end of electric apparatus coil is connected, and described second drive module is connected with the second end of described relay coil, described protection
Control method comprises the following steps：The voltage of first end detecting described relay coil is to obtain first voltage, and detects
The voltage at the second end of described relay coil is to obtain second voltage；According to described first voltage and described second voltage with
And the control signal exporting described first drive module and described second drive module judges the current control of described relay
Whether circuit processed lost efficacy；If it is determined that the current control circuit of described relay lost efficacy, then pass through to control described first driving
Module and described second drive module are to carry out to described relay protecting control.
Protection control method for relay according to embodiments of the present invention, the first first end of detection relay coil
Voltage to obtain first voltage, and detect relay coil the second end voltage to obtain second voltage, then according to
One voltage and second voltage and export the first drive module and the control signal of the second drive module judges relay
Whether current control circuit lost efficacy, if it is determined that the current control circuit of relay lost efficacy, then passed through to control the first driving mould
Block and the second drive module to carry out to relay protecting control, thus effectively increasing the reliability of relay.
According to one embodiment of present invention, according to described first voltage and the control letter exporting described first drive module
When number judging that the first end of described relay coil is out of control, wherein, by controlling described second drive module so that described the
One voltage and described second voltage are equal, to turn off described relay；Or controlled described by described second drive module
Second end of relay coil, so that described relay is in normal on or off state.
According to another embodiment of the invention, according to described second voltage and the control exporting described second drive module
When signal judges that the second end of described relay coil is out of control, wherein, by controlling described first drive module so that described
First voltage and described second voltage are equal, to turn off described relay；Or institute is controlled by described first drive module
State the first end of relay coil, so that described relay is in normal on or off state.
The aspect that the present invention adds and advantage will be set forth in part in the description, and partly will become from the following description
Substantially, or by the practice of the present invention recognize.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become bright from the following description of the accompanying drawings of embodiments
Aobvious and easy to understand, wherein：
Fig. 1 is the block diagram according to the embodiment of the present invention for the protection control device of relay；
Fig. 2 is the circuit diagram according to one embodiment of the invention for the protection control device of relay；
Fig. 3 is the circuit diagram according to another embodiment of the present invention for the protection control device of relay；And
Fig. 4 is the flow chart according to the embodiment of the present invention for the protection control method of relay.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein phase from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.In order to simplify
Disclosure of the invention, is hereinafter described to the part and setting of specific examples.Certainly, they are only merely illustrative, and
And purpose does not lie in the restriction present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.This
Plant and repeat to be for purposes of simplicity and clarity, itself do not indicate the pass between discussed various embodiment and/or setting
System.Additionally, the invention provides various specific technique and material example, but those of ordinary skill in the art can
To recognize the applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below is
Two features it " on " structure can include the first and second features and be formed as the embodiment of directly contact it is also possible to include another
Outer feature is formed at the embodiment between the first and second features, and such first and second features may not be directly to connect
Touch.
In describing the invention, it should be noted that unless otherwise prescribed and limit, term " installation ", " being connected ", " company
Connect " should be interpreted broadly, for example, it may be the connection of mechanical connection or electrical connection or two element internals,
Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, for the ordinary skill in the art, can
To understand the concrete meaning of above-mentioned term as the case may be.
To describe the protection control device for relay of embodiment of the present invention proposition with reference to the accompanying drawings and to be used for continuing
The protection control method of electrical equipment.
Fig. 1 is the block diagram according to the embodiment of the present invention for the protection control device of relay.As shown in figure 1,
The protection control device that this is used for relay includes the first drive module 10, first detection module 20, the second drive module
30th, the second detection module 40 and control module 50.
Wherein, the first drive module 10 is connected with the first end of relay coil K, first detection module 20 and relay
The first end of coil K is connected, and first detection module 20 is used for detecting the voltage of the first end of relay coil K to obtain
First voltage, the second drive module 30 is connected with second end of relay coil K, the second detection module 40 and relay
Second end of coil K is connected, and the second detection module 40 is used for detecting the voltage at second end of relay coil K to obtain
Second voltage, control module 50 respectively with the first drive module 10, first detection module 20, the second drive module 30
It is connected with the second detection module 40, control module 50 according to first voltage and second voltage and exports the first driving mould
The control signal of block 10 and the second drive module 30 judges whether the current control circuit of relay lost efficacy, and is judging to continue
By controlling the first drive module 10 and the second drive module 30, relay was entered when the current control circuit of electrical equipment loses efficacy
Row protection controls.
According to one embodiment of present invention, when control module 50 according to first voltage and exports the first drive module 10
Control signal when judging that the first end of relay coil K is out of control, wherein, control module 50 is passed through to control the second driving
Module 30 is so that first voltage and second voltage are equal, to turn off relay；Or control module 50 is passed through second and is driven
Second end of module 30 control relay coil K, so that relay is in normal on or off state.
According to another embodiment of the invention, when control module 50 according to second voltage and exports the second drive module
When 30 control signal judges that second end of relay coil K is out of control, wherein, control module 50 is passed through to control the first drive
Dynamic model block 10 is so that first voltage and second voltage are equal, to turn off relay；Or control module 50 is passed through first and is driven
The first end of dynamic model block 10 control relay coil K, so that relay is in normal on or off state.
In some embodiments of the invention, the first drive module 10 is identical with the circuit structure of the second drive module 30.
According to one embodiment of present invention, as shown in Fig. 2 the first drive module 10 specifically include first resistor R1,
First switch pipe Q1, second resistance R2 and second switch pipe Q2, wherein, one end of first resistor R1 and control module
50 are connected, and the first end of first switch pipe Q1 is connected with the other end of first resistor R1, and the second of first switch pipe Q1
End is connected with default power supply VCC, and one end of second resistance R2 is connected with control module 50, second switch pipe Q2's
First end is connected with the other end of second resistance R2, second end of second switch pipe Q2 and the 3rd of first switch pipe Q1
End is connected, the 3rd end ground connection GND of second switch pipe Q2, and wherein, second end of second switch pipe Q2 is opened with first
Between the 3rd end closing pipe Q1, there is primary nodal point J1, primary nodal point J1 is connected with the first end of relay coil K.
Preferably, first switch pipe Q1 and second switch pipe Q2 can be audion or metal-oxide-semiconductor.
Because the first drive module 10 in above-described embodiment is identical with the circuit structure of the second drive module 30, therefore this
In no longer the circuit structure of the second drive module 30 is described.
According to a specific example of the present invention, as shown in figure 3, first detection module 20 and the second detection module 40
Circuit structure is identical, and first detection module 20 is made up of the 5th resistance R5, wherein, one end of the 5th resistance R5
It is connected with primary nodal point J1, the other end of the 5th resistance R5 and control module 50 such as MCU (Micro Controller Unit,
Micro-control unit) it is connected.It is understood that the circuit structure of first detection module 20 and the second detection module 40
Can be different, as long as first voltage and second voltage can timely and accurately be detected.
To describe the operation principle of the protection control device for relay of the embodiment of the present invention with reference to Fig. 3 in detail.
The control device of traditional relay is to make the first end of relay coil and default power supply be constantly in conducting state,
By the connection between the second end of control relay coil and ground come the break-make of control relay.But, in this control dress
In putting, if relay control end lost efficacy, for example, control circuit be short-circuited or control end port damage etc.,
Relay all will be led to be in constant conduction state, so that alternating current power supply provides electric energy to always load, bring safety
Hidden danger.
And for the present invention, as shown in figure 3, when the normally opened contact of relay needs adhesive so that alternating current power supply is to negative
When carrying power supply, the adhesive of relay normally open contact can be realized by two kinds of control modes：First letter of first, MCU
Number end P1.0 output low level so that first switch pipe Q1 conducting so that default power supply VCC is to relay coil K
First end power, meanwhile, MCU the 6th signal end P1.5 output high level so that the 4th switching tube Q4 conducting,
So that relay coil K second end ground connection GND, formed current path, relay coil K obtain electric after, relay
The normally opened contact adhesive of device, alternating current power supply powering load；The 3rd signal end P1.2 output high level of second, MCU
So that second switch pipe Q2 conducting, so that the first end ground connection GND of relay coil K, meanwhile, the of MCU
Four signal end P1.3 output low levels are so that the 3rd switching tube Q3 turns on, so that default power supply VCC is to relay line
Circle K the second end power, formed current path, relay coil K obtain electric after, the normally opened contact adhesive of relay,
Alternating current power supply powering load.
And the principle that relay is protected is：The secondary signal end P1.1 of MCU passes through the 5th resistance R5 acquisition and works as
The voltage of the first end of front relay coil K is to obtain first voltage, and judges that first voltage is default power supply VCC
Voltage or the voltage of ground GND, and carry out with the control signal of the first signal end P1.0 and the 3rd signal end P1.2 output
Relatively, to judge whether first voltage and the first signal end P1.0 and the control signal of the 3rd signal end P1.2 output meet
Control rule, if not meeting control rule then it represents that control circuit such as first drive module 10 lost efficacy.
For example, the voltage being default power supply VCC when first voltage, and the control signal of the first signal end P1.0 output with
And the 3rd signal end P1.0 output control signal when being high level, represent that the first drive module 10 lost efficacy, now lead to
The 4th signal end P1.3 output low level crossing MCU is so that the 3rd switching tube Q3 turns on, so that relay coil
The voltage at K two ends is the voltage of default power supply VCC, and then so that relay is turned off.Certainly, in order that relay energy
Enough continue normal work it is also possible to high level is exported so that the 4th switching tube Q4 by the 6th signal end P1.5 of MCU
Conducting, so that relay works on.
The voltage being ground GND when first voltage, and the control signal of the first signal end P1.0 output and the 3rd signal end
When the control signal of P1.2 output is low level, also illustrates that control circuit such as first drive module 10 lost efficacy, now lead to
The 6th signal end P1.5 output high level crossing MCU is so that the 4th switching tube Q4 turns on, so that relay coil
The voltage at K two ends is the voltage of ground GND, and then so that relay is turned off.Certainly, in order that relay just can continue to
Often work is it is also possible to export low level by the 4th signal end P1.3 so that the 3rd switching tube Q3 turns on, so that relay
Device works on.
It is understood that when control circuit the such as second drive module 30 lost efficacy, the principle that relay is protected
Protection philosophy when losing efficacy with the first drive module 10 is identical, just no longer describes here.
In a word, when one end that MCU detects relay coil K occurs controlling and lost efficacy, MCU passes through to control relay
The drive module of the other end of device coil K makes the voltage of the other end of relay coil K equal with the voltage at inefficacy end,
To turn off relay, realize self-shield when Control lost efficacy.It is also possible to pass through control relay coil K
The other end the turn-on and turn-off to realize relay for the voltage, enable relay normal work.
In sum, the protection control device for relay according to embodiments of the present invention, is examined by first detection module
The voltage of first end surveying relay coil is to obtain first voltage, and detects relay coil by the second detection module
To obtain second voltage, control module according to first voltage and second voltage and exports the first driving to the voltage at the second end
The control signal of module and the second drive module judges whether the current control circuit of relay lost efficacy, and is judging relay
Current control circuit by controlling the first drive module and the second drive module, relay is carried out with protection control when losing efficacy
System, thus effectively increase the reliability of relay.
Fig. 4 is the flow chart according to the embodiment of the present invention for the protection control method of relay, wherein, relay
Protection control device includes the first drive module and the second drive module, the first end of the first drive module and relay coil
It is connected, the second drive module is connected with the second end of relay coil.As shown in figure 4, this is used for the protection control of relay
Method processed comprises the following steps：
S1, the voltage of the first end of detection relay coil is to obtain first voltage, and detects the second end of relay coil
Voltage to obtain second voltage.
S2, according to first voltage and second voltage and export the first drive module and the control signal of the second drive module
Judge whether the current control circuit of relay lost efficacy.
S3, if it is determined that the current control circuit of relay lost efficacy, then passes through to control the first drive module and the second driving mould
Block is to carry out to relay protecting control.
According to one embodiment of present invention, judge to continue with the control signal exporting the first drive module according to first voltage
When the first end of electric apparatus coil is out of control, wherein, by controlling the second drive module so that first voltage and second voltage are equal,
To turn off relay；Or by the second end of the second drive module control relay coil, so that relay is in normally
On or off state.
According to another embodiment of the invention, judged with the control signal exporting the second drive module according to second voltage
When second end of relay coil is out of control, wherein, by controlling the first drive module so that first voltage and second voltage phase
Deng to turn off relay；Or by the first end of the first drive module control relay coil, so that relay is in
Normal on or off state.
Specifically, the control method of traditional relay is to make the first end of relay coil be constantly in default power supply to lead
Logical state, by the connection between the second end of control relay coil and ground come the break-make of control relay.But,
In this control method, if relay control end lost efficacy, for example, control circuit be short-circuited or control end port
Damage etc., relay all will be led to be in constant conduction state, so that alternating current power supply provides electric energy to always load,
Bring potential safety hazard.
And the conducting of relay for the present invention, can be realized by two kinds of control modes：First, by controlling the
One drive module so that default power supply is powered to the first end of relay coil, meanwhile, by control the second drive module with
Making the second end ground connection of relay coil, so that relay is turned on thus forming current path；Second, by controlling the first drive
Dynamic model block so that the first end ground connection of relay coil, meanwhile, by controlling the second drive module so that default power supply is to continuing
Second end of electric apparatus coil powers, and so that relay is turned on thus forming current path.
According to a specific example of the present invention, as shown in figure 3, the first signal end P1.0 output low level of MCU with
First switch pipe Q1 is made to turn on, so that default power supply VCC powers to the first end of relay coil K, meanwhile,
The 6th signal end P1.5 of MCU exports high level so that the 4th switching tube Q4 turns on, so that relay coil K
Second end ground connection GND, formed current path, relay coil K obtain electric after, the normally opened contact adhesive of relay, hand over
Stream power supply powering load；Or the 3rd signal end P1.2 output high level of MCU is so that second switch pipe Q2 turns on,
So that the first end ground connection GND of relay coil K, meanwhile, the 4th signal end P1.3 output low level of MCU
So that the 3rd switching tube Q3 conducting, so that default power supply VCC powers to second end of relay coil K, formed
Current path, relay coil K obtain electric after, the normally opened contact adhesive of relay, alternating current power supply powering load.
And the principle that relay is protected is：Detection relay coil first end voltage to obtain first voltage,
And detect relay coil the second end voltage to obtain second voltage, according to first voltage and second voltage and output
Control signal to the first drive module and the second drive module judges whether the current control circuit of relay meets control
Rule, if not meeting control rule, judges that current control circuit lost efficacy.
According to a specific example of the present invention, as shown in figure 3, the voltage being default power supply VCC when first voltage,
And the control signal of the control signal of the first signal end P1.0 output and the 3rd signal end P1.0 output is when being high level,
Represent control circuit such as first drive module lost efficacy, now by MCU the 4th signal end P1.3 export low level so that
3rd switching tube Q3 conducting, so that the voltage at relay coil K two ends is the voltage of default power supply VCC,
And then so that relay is turned off.Certainly, in order that relay can continue to normal work it is also possible to pass through the 6th of MCU
Signal end P1.5 output high level is so that the 4th switching tube Q4 turns on, so that relay works on.
The voltage being ground GND when first voltage, and the control signal of the first signal end P1.0 output and the 3rd signal end
When the control signal of P1.2 output is low level, also illustrate that control circuit such as first drive module lost efficacy, now by
The 6th signal end P1.5 output high level of MCU is so that the 4th switching tube Q4 turns on, so that relay coil K
The voltage at two ends is the voltage of ground GND, and then so that relay is turned off.Certainly, in order that relay can continue to normally
Work is it is also possible to export low level by the 4th signal end P1.3 so that the 3rd switching tube Q3 turns on, so that relay
Work on.
It is understood that the control signal when second voltage, the 4th signal end P1.3 and the 6th signal end P1.5 output
When not meeting control rule, the principle that relay is protected is identical with above-mentioned principle, just no longer describes here.
In a word, when one end that MCU detects relay coil K occurs controlling and lost efficacy, MCU passes through to control relay
The drive module of the other end of device coil K makes the voltage of the other end of relay coil K equal with the voltage at inefficacy end,
To turn off relay, realize self-shield when Control lost efficacy.It is also possible to pass through control relay coil K
The other end the turn-on and turn-off to realize relay for the voltage, enable relay normal work.
Protection control method for relay according to embodiments of the present invention, the first first end of detection relay coil
Voltage to obtain first voltage, and detect relay coil the second end voltage to obtain second voltage, then according to
One voltage and second voltage and export the first drive module and the control signal of the second drive module judges relay
Whether current control circuit lost efficacy, if it is determined that the current control circuit of relay lost efficacy, then passed through to control the first driving mould
Block and the second drive module to carry out to relay protecting control, thus effectively increasing the reliability of relay.
In flow chart or here any process described otherwise above or method description are construed as, represent and include one
Individual or more be used for realizing the module of the code of the executable instruction of step, fragment or portions of specific logical function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussion
Sequentially, including according to involved function by substantially simultaneously in the way of or in the opposite order, carry out perform function, this should be by
Embodiments of the invention person of ordinary skill in the field understood.
Represent in flow charts or here logic described otherwise above and/or step, for example, it is possible to be considered as
Realize the order list of the executable instruction of logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (system as computer based system, including processor or other can be from finger
Make the system of execution system, device or equipment instruction fetch execute instruction) use, or combine these instruction execution systems,
Device or equipment and use.For the purpose of this specification, " computer-readable medium " can be any can comprise, store,
Communication, propagation or transmission procedure for instruction execution system, device or equipment or combine these instruction execution systems, device
Or equipment and the device that uses.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Tool
There are the electrical connection section (electronic installation) of one or more wirings, portable computer diskette box (magnetic device), random access memory
Memorizer (RAM), read only memory (ROM), erasable edit read-only storage (deposit by EPROM or flash
Reservoir), fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium
Can even is that the paper that can print described program thereon or other suitable media because can for example by paper or its
He carries out optical scanning by medium, then enters edlin, interpretation or is processed to electronics with other suitable methods if necessary
Mode obtains described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, multiple steps or method can with storage in memory and by suitable instruction execution system execute soft
Part or firmware are realizing.For example, if realized with hardware, with the same in another embodiment, available this area public affairs
Any one of following technology known or their combination are realizing：Have and patrol for logic function is realized to data signal
Collect the discrete logic of gate circuit, there is the special IC of suitable combinational logic gate circuit, programmable gate array
(PGA), field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
The program that can be by completes come the hardware to instruct correlation, and described program can be stored in a kind of computer-readable storage medium
In matter, this program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, can be integrated in a processing module in each functional unit in each embodiment of the present invention or
Unit is individually physically present it is also possible to two or more units are integrated in a module.Above-mentioned integrated mould
Block both can be to be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.Described integrated module
If using realization in the form of software function module and as in terms of when independent production marketing or use it is also possible to be stored in one
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 " embodiment ", " some embodiments ", " example ", " specific example ",
Or the description of " some examples " etc. means specific features with reference to this embodiment or example description, structure, material or feature
It is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be
Combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, Ke Yili
Solution can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention by claims and its equivalent limits.
Claims (9)
1. a kind of protection control device for relay is it is characterised in that include：
First drive module, described first drive module is connected with the first end of relay coil；
First detection module, described first detection module is connected with the first end of described relay coil, described first detection
Module is used for detecting the voltage of the first end of described relay coil to obtain first voltage；
Second drive module, described second drive module is connected with the second end of described relay coil；
Second detection module, described second detection module is connected with the second end of described relay coil, described second detection
Module is used for detecting the voltage at the second end of described relay coil to obtain second voltage；
Control module, described control module respectively with described first drive module, described first detection module, described second
Drive module is connected with described second detection module, described control module according to described first voltage and described second voltage with
And the control signal exporting described first drive module and described second drive module judges the current control of described relay
Whether circuit processed lost efficacy, and when the current control circuit judging described relay lost efficacy by controlling described first driving mould
Block and described second drive module are to carry out to described relay protecting control.
2. it is used for the protection control device of relay as claimed in claim 1 it is characterised in that working as described control mould
Tuber according to described first voltage and exports the control signal of described first drive module and judges the of described relay coil
When one end is out of control, wherein,
Described control module is passed through to control described second drive module so that described first voltage and described second voltage are equal,
To turn off described relay；Or
Described control module controls the second end of described relay coil by described second drive module, so that described relay
Device is in normal on or off state.
3. it is used for the protection control device of relay as claimed in claim 1 it is characterised in that working as described control mould
Tuber according to described second voltage and exports the control signal of described second drive module and judges the of described relay coil
When two ends are out of control, wherein,
Described control module is passed through to control described first drive module so that described first voltage and described second voltage are equal,
To turn off described relay；Or
Described control module controls the first end of described relay coil by described first drive module, so that described relay
Device is in normal on or off state.
4. the protection control device for relay as any one of claim 1-3 is it is characterised in that described
First drive module is identical with the circuit structure of described second drive module.
5. it is used for the protection control device of relay as claimed in claim 4 it is characterised in that described first drives
Module specifically includes：
First resistor, one end of described first resistor is connected with described control module；
First switch pipe, the first end of described first switch pipe is connected with the other end of described first resistor, and described first opens
The second end closing pipe is connected with default power supply；
Second resistance, one end of described second resistance is connected with described control module；
Second switch pipe, the first end of described second switch pipe is connected with the other end of described second resistance, and described second opens
The second end closing pipe is connected with the 3rd end of described first switch pipe, the 3rd end ground connection of described second switch pipe, wherein,
Between 3rd end of the second end of described second switch pipe and described first switch pipe, there is primary nodal point, described primary nodal point
It is connected with the first end of described relay coil.
6. it is used for as claimed in claim 5 the protection control device of relay it is characterised in that described first switch
Pipe and described second switch pipe are audion or metal-oxide-semiconductor.
7. a kind of protection control method for relay is it is characterised in that the protection control device bag of described relay
Include the first drive module and the second drive module, described first drive module is connected with the first end of relay coil, described
Second drive module is connected with the second end of described relay coil, and described protection control method comprises the following steps：
The voltage of first end detecting described relay coil is to obtain first voltage, and detects the of described relay coil
The voltage at two ends is to obtain second voltage；
According to described first voltage and described second voltage and export described first drive module and described second driving
The control signal of module judges whether the current control circuit of described relay lost efficacy；
If it is determined that the current control circuit of described relay lost efficacy, then pass through to control described first drive module and described the
Two drive modules are to carry out to described relay protecting control.
8. it is used for as claimed in claim 7 the protection control method of relay it is characterised in that according to described first
When voltage judges that the first end of described relay coil is out of control with the control signal exporting described first drive module, its
In,
By controlling described second drive module so that described first voltage and described second voltage are equal, to continue described in turning off
Electrical equipment；Or
Control the second end of described relay coil by described second drive module, so that described relay is in normally
On or off state.
9. it is used for as claimed in claim 7 the protection control method of relay it is characterised in that according to described second
When voltage judges that the second end of described relay coil is out of control with the control signal exporting described second drive module, its
In,
By controlling described first drive module so that described first voltage and described second voltage are equal, to continue described in turning off
Electrical equipment；Or
Control the first end of described relay coil by described first drive module, so that described relay is in normally
On or off state.
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| CN201510504520.0A CN106469628B (en) | 2015-08-17 | 2015-08-17 | For the protection control method of relay, device |
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| CN201510504520.0A CN106469628B (en) | 2015-08-17 | 2015-08-17 | For the protection control method of relay, device |
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| CN106469628B (en) | 2019-05-31 |
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