CN106569128A - Detection method and device - Google Patents
Detection method and device Download PDFInfo
- Publication number
- CN106569128A CN106569128A CN201610958924.1A CN201610958924A CN106569128A CN 106569128 A CN106569128 A CN 106569128A CN 201610958924 A CN201610958924 A CN 201610958924A CN 106569128 A CN106569128 A CN 106569128A
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- relay
- current
- voltage
- signal
- resistance value
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The embodiment of the invention provides a detection method and a detection device. On one hand, the embodiment of the invention obtains the current resistance value of the relay; therefore, whether the relay is damaged or not is judged according to the resistance value. According to the principle, whether the relay is damaged or not is judged by detecting the resistance value, so that the problem that the relay cannot be detected when the relay is damaged in the prior art is solved.
Description
【Technical field】
The present invention relates to relay test technical field, more particularly to a kind of detection method and device.
【Background technology】
At present relay is widely used in industry-by-industry, such as remote control, remote measurement, communicate, automatically control, electromechanical integration and
In power electronic equipment.The working environment of relay is generally environment under high pressure, therefore, impact or the Jing of high current can be often subject to
Overload is often in, now relay is it may happen that damage, when damaging occurs in relay, the relay then cannot be normal
Work, for example：The side contact caused by the monolateral adhesion of contact cannot separate so that the side of relay is in normally closed shape
State；Or, cannot be turned on when relay is closed by what pitting of contact caused so that relay loses its switching function etc..But
It is that whether detection relay the effective means damaged does not occur in prior art.
In process of the present invention is realized, inventor has found that at least there are the following problems in prior art：
In the prior art, when damaging occurs in relay, it is impossible to carry out damage detection to relay.It is badly in need of a kind of detection
Mode damages the demand of detection meeting carry out relay.
【The content of the invention】
In view of this, a kind of detection method and device are embodiments provided, to solve prior art in, when after
When damaging occurs in electrical equipment, it is impossible to relay is carried out to damage the problem of detection.
In a first aspect, embodiments providing a kind of detection method, methods described includes：
Obtain the current resistance value of relay；
According to the resistance value, judge whether the relay occurs damaging.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the damage is extremely
Include following one kind less：The increase of monolateral adhesion, pitting of contact, arcing and contact resistance.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the acquisition after
The current resistance value of electrical equipment, including：
Detect the magnitude of voltage between the positive pole and negative pole of the relay；
The current value of the electric current that detection passes through the relay；
The ratio of the magnitude of voltage and the current value is obtained, as the resistance value.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, it is described according to institute
Resistance value is stated, judges whether the relay occurs damaging, including：
Judge the resistance value whether more than specified resistance value；
It is more than the specified resistance value in response to the resistance value, determines that damaging occurs in the relay；
The specified resistance value is less than or equal in response to the resistance value, determines that damaging does not occur in the relay.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the detection institute
The magnitude of voltage between the positive pole of relay and negative pole is stated, including：
Collection first voltage signal；
The isolation processing of high-voltage signal is carried out to the first voltage signal, the low pressure in the first voltage signal is obtained
Signal；
The low-voltage signal is converted to into d. c. voltage signal；
The interference signal in the d. c. voltage signal is removed, second voltage signal is obtained；
According to the second voltage signal, the magnitude of voltage is detected.
A kind of aspect as above and arbitrary possible implementation, it is further provided implementation, the detection is led to
The current value of the electric current of the relay is crossed, including：
Gather the first current signal；
First current signal is converted to into DC current signal；
The interference signal in the DC current signal is removed, the second current signal is obtained；
According to second current signal, the current value is detected.
A technical scheme in above-mentioned technical proposal has the advantages that：
In embodiments of the present invention, the resistance value current by obtaining relay, and according to the resistance value, judge described
Whether relay occurs damaging, and because relay is when occurring damaging, the resistance value of the relay occurs exception, according to this
Principle, in embodiments of the present invention, judges whether relay occurs damaging by detection resistance value, solves prior art
In, when damaging occurs in relay, it is impossible to relay is carried out to damage the problem of detection.
Second aspect, embodiments provides a kind of detection means, and described device includes：
Collecting unit, the resistance value current for obtaining relay；
Detector unit, for according to the resistance value, judging whether the relay occurs damaging.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the damage is extremely
Include following one kind less：The increase of monolateral adhesion, pitting of contact, arcing and contact resistance.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the collection list
Unit, specifically for：
Detect the magnitude of voltage between the positive pole and negative pole of the relay；
The current value of the electric current that detection passes through the relay；
The ratio of the magnitude of voltage and the current value is obtained, as the resistance value.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the detection list
Unit, specifically for：
Judge the resistance value whether more than specified resistance value；
It is more than the specified resistance value in response to the resistance value, determines that damaging occurs in the relay；
The specified resistance value is less than or equal in response to the resistance value, determines that damaging does not occur in the relay.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the collection list
When unit is used to detect the magnitude of voltage between the positive pole and negative pole of the relay, specifically for：
Collection first voltage signal；
The isolation processing of high-voltage signal is carried out to the first voltage signal, the low pressure in the first voltage signal is obtained
Signal；
The low-voltage signal is converted to into d. c. voltage signal；
The interference signal in the d. c. voltage signal is removed, second voltage signal is obtained；
According to the second voltage signal, the magnitude of voltage is detected.
Aspect as above and arbitrary possible implementation, it is further provided a kind of implementation, the collection list
When unit passes through the current value of the electric current of the relay for detection, specifically for：
Gather the first current signal；
First current signal is converted to into DC current signal；
The interference signal in the DC current signal is removed, the second current signal is obtained；
According to second current signal, the current value is detected.
A technical scheme in above-mentioned technical proposal has the advantages that：
Because relay is when occurring damaging, the resistance value of the relay occurs exception, according to this principle, at this
In bright embodiment, judge whether relay occurs damaging by detection resistance value, in solving prior art, when relay goes out
When now damaging, it is impossible to relay is carried out to damage the problem of detection.
【Description of the drawings】
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this area
For those of ordinary skill, without having to pay creative labor, can be with other attached according to these accompanying drawings acquisitions
Figure.
Fig. 1 is a kind of schematic flow sheet of detection method that the embodiment of the present invention is provided；
Fig. 2 is a kind of schematic flow sheet of specific implementation for step 101 that the embodiment of the present invention is provided；
Fig. 3 is a kind of schematic flow sheet of specific implementation for step 201 that the embodiment of the present invention is provided；
Fig. 4 is a kind of structural representation of the detection circuit of detection relay voltage value that the embodiment of the present invention is provided；
Fig. 5 is a kind of schematic flow sheet of specific implementation for step 202 that the embodiment of the present invention is provided；
Fig. 6 is a kind of structural representation of the detection circuit of detection relay current value that the embodiment of the present invention is provided；
Fig. 7 is a kind of structural representation of detection means that the embodiment of the present invention is provided.
【Specific embodiment】
In order to be better understood from technical scheme, the embodiment of the present invention is retouched in detail below in conjunction with the accompanying drawings
State.
It will be appreciated that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
Its embodiment, belongs to the scope of protection of the invention.
The term for using in embodiments of the present invention is, only merely for the purpose of description specific embodiment, and to be not intended to be limiting
The present invention." one kind ", " described " and " being somebody's turn to do " of singulative used in the embodiment of the present invention and appended claims
It is also intended to include most forms, unless context clearly shows that other implications.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation of description affiliated partner, represent
There may be three kinds of relations, for example, A and/or B can be represented：Individualism A, while there is A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent forward-backward correlation pair as if a kind of relation of "or".
It will be appreciated that though voltage signal and electricity may be described using term first, second in embodiments of the present invention
Stream signal, but these voltage signals and current signal should not necessarily be limited by these terms.These terms are only used for voltage signal and electricity
Stream signal is distinguished from each other out.For example, in the case of without departing from range of embodiment of the invention, first voltage signal can also be claimed
For second voltage signal, similarly, second voltage signal can also be referred to as first voltage signal.
Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining " or " in response to detection ".Similarly, depending on linguistic context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when it is determined that when " or " in response to determine " or " when the detection (condition of statement
Or event) when " or " in response to detecting (condition or event of statement) ".
Embodiment one
The embodiment of the present invention provides a kind of detection method, refer to Fig. 1, its method provided by the embodiment of the present invention
Schematic flow sheet, as shown in figure 1, the method is comprised the following steps：
101st, the current resistance value of relay is obtained.
Specifically, when damaging occurs in relay, the resistance value of the relay occurs exception, accordingly, it would be desirable to pass through to obtain
Take the current resistance value of relay to judge whether the relay exception occurs.
Further, when relay is operated in environment under high pressure, can be often subject to high current impact or often in
Overload, now, the reason between the contact of relay because of high current or overload, causes the monolateral viscous of contact occur
The phenomenon of company, pitting of contact, arcing and contact resistance increase.
For example, when relay is under the high current environment, due to the high temperature for producing, and the problem of slider material, cause
Occurs adhesion between the contact of side, i.e., monolateral adhesion the adhesion survey contact now occurs and is then in normally off.
Again for example, because when relay long-time is in overload, the temperature for making contact surface steeply rises, and causes to touch
Point ablation, now, the surface of contact can be destroyed so that relay cannot be turned in closure, that is, relay is lost
The function of its switch.
Again for example, when the both sides contact of relay is separated, i.e., relay is switched to off-state by closure state,
If now electric current is larger, and separating action it is slower when, make relay produce phenomenon of arc discharge, the now insulant meeting of relay
Destroyed so that relay is in uninsulated state.
Again for example, when being under high current or overload due to relay long-time so that the conduction of contact surface
Characteristic changes, and then causes the contact resistance of contact to increase, so that contact cannot carry out normal conductivity.
Above-mentioned phenomenon can cause relay to occur damaging, and normal use of relay is impacted.Also, above-mentioned damage
It is bad to make the resistance value of relay exception occur.
102nd, according to the resistance value, judge whether the relay occurs damaging.
Specifically, judge whether relay occurs damaging by resistance value, not only judgment mode is fairly simple, also,
Because when above-mentioned damage occurs in relay, the resistance value of relay occurs exception, therefore, by the electricity of current relay
Resistance can intuitively reflect whether the relay occurs in that above-mentioned damage, so judgment mode is more effective so that judge knot
Fruit is more accurate.
It is described according to the resistance value in a specific embodiment, judge whether the relay occurs damaging,
Including：
Judge the resistance value whether more than specified resistance value；
It is more than the specified resistance value in response to the resistance value, determines that damaging occurs in the relay；
It is not more than the specified resistance value in response to the resistance value, determines that damaging does not occur in the relay.
Specifically, the specified resistance value is resistance value of the relay under normal condition, can be obtained based on experience value
, it is possible to pre-set.When there is above-mentioned damaged condition, the resistance value of relay can be more than specifies resistance value, because
This, can specify resistance value to judge whether relay occurs in that above-mentioned situation by judging whether current resistance value is more than
Damage.
Because relay is when occurring damaging, the resistance value of the relay occurs exception, according to this principle, at this
In bright embodiment, judge whether relay occurs damaging by detection resistance value, in solving prior art, when relay goes out
When now damaging, it is impossible to relay is carried out to damage the problem of detection.
Embodiment two
A kind of specific implementation for step 101 is embodiments provided, it is concrete as shown in Fig. 2 the method
Comprise the following steps：
201st, the magnitude of voltage between the positive pole and negative pole of the relay is detected.
202nd, the current value of the electric current that detection passes through the relay.
203rd, the ratio of the magnitude of voltage and the current value is obtained, as the resistance value.
Wherein, the current value and the magnitude of voltage are the current value and magnitude of voltage of synchronization, with the electricity for ensureing to obtain
The accuracy of resistance, and then ensure that the accuracy of the result whether relay judged occurs damaging.
Embodiment three
A kind of specific implementation for step 201 is embodiments provided, it is concrete as shown in figure 3, the side
Method is comprised the following steps：
301st, first voltage signal is gathered.
In a specific embodiment, such as relay is operated in battery system, positive pole and the relay of battery
Positive pole connects, and then the electric current of the wire of anode, cathode voltage and battery is derived from the negative pole of relay, namely battery
Positive pole is connected to the upstream device of relay by the negative pole of relay, because relay has resistance, can make anode electricity
One pressure drop of generation in relay is pressed in, the pressure drop is the running voltage (belonging to low pressure) of relay, and is formed by relay
Electric current, the electric current for relay operating current.When the Acquisition Circuit of voltage signal gathers the voltage signal of relay, collection
Circuit requires connect to relay positive terminal and negative terminal, and now the Acquisition Circuit has been also carried out being connected with the positive pole of battery, and
And the positive pole of battery after relay producing pressure drop, the then battery negative pole that cathode voltage passes through relay after pressure drop
Post is derived, therefore, when the voltage signal of relay is gathered, the voltage signal of acquisition includes the running voltage signal of relay
The cathode voltage signal of (low-voltage signal) and battery, because the voltage of battery belongs to high pressure, therefore the voltage signal of battery for height
Pressure signal.
So that battery system is located at electric automobile as an example, when the battery system operation is in electric automobile, in electric automobile
After braking procedure, to the energy that electric automobile is produced in braking procedure is backwashed in battery, one can be now formed instead
To voltage (belonging to high pressure), and produce pressure drop when through relay, the pressure drop is also the running voltage of relay, and is formed
By the electric current of relay, voltage and current now is antipodal with during the direction of voltage and current mentioned above, and
And also can be collected circuit and collect, therefore the voltage signal for collecting is contrary with the direction of voltage signal mentioned above
's.
After Acquisition Circuit collects above-mentioned four kinds of voltage, the waveform that four kinds of voltages are formed belongs to the ripple of alternating voltage
Shape, therefore, the first voltage signal for collecting is ac voltage signal.
302nd, the isolation processing of high-voltage signal is carried out to the first voltage signal, in obtaining the first voltage signal
Low-voltage signal.
Specifically, due to the voltage signal that the voltage signal for needing to use is relay, and the voltage signal of relay is
Low-voltage signal, it is therefore desirable to which the isolation processing of high-voltage signal is carried out to first voltage signal, to ensure the voltage signal for obtaining all
For the voltage signal of relay, when isolating to first voltage signal, what is isolated out is the voltage signal and energy of battery
Positive high-voltage signal and negative sense high-voltage signal in the voltage signal for backwashing, i.e. first voltage signal, the electricity for now remaining
Pressure signal includes that the voltage signal and energy of the pressure drop that anode is produced when through relay backwashes when through relay
Positive low-voltage signal and negative sense low-voltage signal in the voltage signal of the pressure drop of generation, i.e. first voltage signal.
In a specific embodiment, can be by isolation circuit to carrying out high-voltage signal in first voltage signal
Isolation processing.
303rd, the low-voltage signal is converted to into d. c. voltage signal.
Specifically, when resistance value is obtained by magnitude of voltage and current value, the magnitude of voltage used is DC voltage value, therefore
Need for low-voltage signal to be converted to d. c. voltage signal, and then DC voltage value can be obtained according to d. c. voltage signal.
In a specific embodiment, low-voltage signal is converted to by d. c. voltage signal by rectification circuit.
304th, the interference signal in the d. c. voltage signal is removed, second voltage signal is obtained.
Specifically, due in the first voltage signal that collects, further comprises interference signal, and there is also in interference signal
In low-voltage signal, therefore also contains and belong to the straight of low pressure interference signal in the d. c. voltage signal obtained by said method
Stream signal, in order to ensure the accuracy of the magnitude of voltage for obtaining, it is therefore desirable to remove the DC voltage obtained by said method and believe
Interference signal in number.
In a specific embodiment, in the interference signal in removing d. c. voltage signal, can be by filtering
Circuit is removed.
305th, according to the second voltage signal, the magnitude of voltage is detected.
Specifically, when resistance value is obtained according to magnitude of voltage, in order to ensure the accuracy of the resistance value for obtaining, the electricity for using
Pressure value should be magnitude of voltage of the voltage under steady statue, therefore after second voltage signal is obtained, according to second for obtaining
Voltage signal, judges all magnitudes of voltage under steady statue, i.e.,：Specifying in duration, the fluctuation range of magnitude of voltage is little
In all magnitudes of voltage of given voltage threshold value.
Then, the magnitude of voltage for needing to use is obtained in all voltages obtained above.
For example, because the first voltage signal for collecting has temporal precedence relationship, therefore the second voltage for obtaining
Signal also has temporal precedence relationship, that is, the magnitude of voltage for detecting also has temporal precedence relationship.Therefore, it is described to obtain
The magnitude of voltage for obtaining can be in the magnitude of voltage of intermediate time in all magnitudes of voltage, as between the positive pole and negative pole of relay
Magnitude of voltage.
Again for example, after above-mentioned all magnitudes of voltage are obtained, the equal of all magnitudes of voltage can be obtained according to all magnitudes of voltage
Value, as the magnitude of voltage between the positive pole and negative pole of relay.
Again for example, after above-mentioned all magnitudes of voltage are obtained, a magnitude of voltage can be randomly selected in all magnitudes of voltage, is made
For the magnitude of voltage between the positive pole and negative pole of relay.
In a specific embodiment, single-chip microprocessor MCU (Microcontroller Unit, microcontroller can be passed through
Unit) carry out detection voltage value.
In a specific embodiment, relay is operated in battery system, concrete as shown in figure 4, detection relay
The detection circuit of the magnitude of voltage between the positive terminal and negative terminal of device includes：Voltage sampling circuit, voltage isolation circuit, voltage are whole
Current circuit, voltage filtering circuit and MCU, wherein, the both positive and negative polarity of the input of voltage sampling circuit is respectively with relay just
Pole and negative terminal connect, and the outfan of the voltage sampling circuit is connected with voltage isolation circuit input；Voltage isolation circuit
Input be connected with the input of voltage rectifying circuit；The outfan of voltage rectifying circuit and the input of voltage filtering circuit
Connection；The input of voltage filtering circuit is connected with MCU.
When magnitude of voltage between positive pole and negative pole of the detection circuit to relay is detected, comprise the following steps：
1st, voltage sampling circuit collects first voltage signal by its input.
2nd, first voltage signal is sent to voltage sampling circuit the input of voltage isolation circuit by its outfan.
3rd, voltage isolation circuit carries out the isolation processing of high voltage signal to first voltage signal, obtains first voltage signal
In low-voltage signal.
4th, the low-voltage signal is sent to voltage isolation circuit the input of voltage rectifying circuit by its outfan.
5. the low-voltage signal is converted to d. c. voltage signal by voltage rectifying circuit.
6th, the d. c. voltage signal is sent to voltage rectifying circuit the input of voltage filtering circuit by its outfan.
7th, voltage filtering circuit removes the interference signal in the d. c. voltage signal, obtains second voltage signal.
8th, the second voltage signal is sent MCU by voltage filtering circuit by its outfan.
9th, MCU detects in specified duration that the fluctuation range of magnitude of voltage is electric less than specifying according to the second voltage signal
All magnitudes of voltage of pressure threshold value, then according to all magnitudes of voltage, obtain the magnitude of voltage between the positive pole of relay and negative pole.
Example IV
Embodiment provides a kind of specific implementation for step 202, concrete as shown in figure 5, methods described includes
Following steps：
501st, the first current signal is gathered.
Specifically, when the first current signal is gathered, the of relay can be gathered by the Acquisition Circuit of current signal
One current signal, and the reason for have identical with the first voltage signal for collecting, the first current information for collecting is to hand over
Stream current signal.
502nd, first current signal is converted to into DC current signal.
Specifically, when resistance value is obtained by magnitude of voltage and current value, the current value used is DC current values, therefore
Need for the first current signal to be converted to DC current signal, and then DC current values can be obtained according to DC current signal.
In a specific embodiment, first current signal is converted to by DC current letter by rectification circuit
Number.
503rd, the interference signal in the DC current signal is removed, the second current signal is obtained.
Specifically, due in the first current signal for collecting, containing interference signal, for the current value for ensureing to obtain
Accuracy, it is therefore desirable to remove the interference signal in the DC current signal obtained by said method.
In a specific embodiment, in the interference signal in removing DC current signal, can be by filtering
Circuit is removed.
504th, according to second current signal, the current value is detected.
Specifically, when resistance value is obtained according to current value, in order to ensure the accuracy of the resistance value for obtaining, the electricity for using
Flow valuve should be current value of the electric current under steady statue, therefore after the second current signal is obtained, according to second for obtaining
Current signal, judges all current values under steady statue, i.e.,：Specifying in duration, the fluctuation range of current value is little
In all current values of specified current flow threshold value.
Then, the current value for needing to use is obtained in all electric currents obtained above.
For example, because the first current signal for collecting has temporal precedence relationship, therefore the second electric current for obtaining
Signal also has temporal precedence relationship, that is, the current value for detecting also has temporal precedence relationship.Therefore, acquisition
Current value can be in the current value of intermediate time in all current values, as the current value of relay.
Again for example, after above-mentioned all current values are obtained, the equal of all current values can be obtained according to all current values
Value, as the current value of relay.
Again for example, after above-mentioned all current values are obtained, a current value can be randomly selected in all current values, is made
For the current value of relay.
In a specific embodiment, current value can be detected by single-chip microprocessor MCU.
In a specific embodiment, relay is operated in battery system, concrete as shown in fig. 6, detection relay
The detection circuit of the current value of device includes：Current sampling circuit, current rectification circuit, current filtering circuit and MCU, wherein,
The input of current sampling circuit is connected with relay, the outfan of the current sampling circuit and the input of current rectification circuit
Connection；The outfan of current rectification circuit is connected with the input of current filtering circuit；The input and MCU of current filtering circuit
Connection.
When the detection circuit is detected to the current value of relay, comprise the following steps：
1st, current sampling circuit collects the first current signal by its input.
2nd, the first current signal is sent to current sampling circuit the input of current rectification circuit by its outfan.
3. first current signal is converted to DC current signal by current rectification circuit.
4th, the DC current signal is sent to current rectification circuit the input of current filtering circuit by its outfan.
5th, current filtering circuit removes the interference signal in the DC current signal, obtains the second current signal.
6th, second current signal is sent MCU by current filtering circuit by its outfan.
7th, MCU detects in specified duration that the fluctuation range of current value is electric less than specifying according to second current signal
All current values of stream threshold value, then according to all current values, obtain the current value of relay.
The embodiment of the present invention further provides the device embodiment for realizing each step and method in said method embodiment.
Embodiment five
Fig. 7 is refer to, a kind of structural representation of its detection means provided by the embodiment of the present invention.The device bag
Include：
Collecting unit 71, the resistance value current for obtaining relay；
Detector unit 72, for according to the resistance value, judging whether the relay occurs damaging.
In a specific embodiment, the damage at least includes following one kind：Monolateral adhesion, pitting of contact, drawing
Arc and contact resistance increase.
In a specific embodiment, the collecting unit 71, specifically for：
Detect the magnitude of voltage between the positive pole and negative pole of the relay；
The current value of the electric current that detection passes through the relay；
The ratio of the magnitude of voltage and the current value is obtained, as the resistance value.
In a specific embodiment, the detector unit 72, specifically for：
Judge the resistance value whether more than specified resistance value；
It is more than the specified resistance value in response to the resistance value, determines that damaging occurs in the relay；
The specified resistance value is less than or equal in response to the resistance value, determines that damaging does not occur in the relay.
In a specific embodiment, the collecting unit 71 be used for detect the relay positive pole and negative pole it
Between magnitude of voltage when, specifically for：
Collection first voltage signal；
The isolation processing of high-voltage signal is carried out to the first voltage signal, the low pressure in the first voltage signal is obtained
Signal；
The low-voltage signal is converted to into d. c. voltage signal；
The interference signal in the d. c. voltage signal is removed, second voltage signal is obtained；
According to the second voltage signal, the magnitude of voltage is detected.
In a specific embodiment, the collecting unit 71 is used for the electricity of the electric current that detection passes through the relay
During flow valuve, specifically for：
Gather the first current signal；
First current signal is converted to into DC current signal；
The interference signal in the DC current signal is removed, the second current signal is obtained；
According to second current signal, the current value is detected.
Because each unit in the present embodiment is able to carry out embodiment one, embodiment two, embodiment three and example IV institute
The method shown, the part that the present embodiment is not described in detail refers to embodiment one, embodiment two, embodiment three and example IV
Related description, wherein, collecting unit 71 corresponding to obtain magnitude of voltage during voltage sampling circuit, voltage isolation electricity
Road, voltage rectifying circuit, voltage filtering circuit and micro-control unit, and adopt corresponding to the electric current obtained during current value
Sample circuit, current rectification circuit, current filtering circuit and micro-control unit, and obtain the micro-control unit during magnitude of voltage
Can be a micro-control unit with the micro-control unit obtained during current value, detector unit 72 is above-mentioned corresponding to obtaining
The micro-control unit mentioned.
In embodiments of the present invention, the resistance value current by obtaining relay, and according to the resistance value, judge described
Whether relay occurs damaging, and because relay is when occurring damaging, the resistance value of the relay occurs exception, according to this
Principle, in embodiments of the present invention, judges whether relay occurs damaging by detection resistance value, solves prior art
In, when damaging occurs in relay, it is impossible to relay is carried out to damage the problem of detection.
Those skilled in the art can be understood that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be described here.
In several embodiments provided by the present invention, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematic, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, for example, multiple units or group
Part can with reference to or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown
Or discuss coupling each other direct-coupling or communication connection can be by the indirect of some interfaces, device or unit
Coupling is communicated to connect, and can be electrical, mechanical or other forms.
The unit as separating component explanation can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can according to the actual needs be selected to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit both can be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in an embodied on computer readable and deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Device (can be personal computer, server, or network equipment etc.) or processor (Processor) perform the present invention each
The part steps of embodiment methods described.And aforesaid storage medium includes：USB flash disk, portable hard drive, read only memory (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. it is various
Can be with the medium of store program codes.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (12)
1. a kind of detection method, it is characterised in that methods described includes：
Obtain the current resistance value of relay；
According to the resistance value, judge whether the relay occurs damaging.
2. the method for claim 1, it is characterised in that the damage at least includes following one kind：Monolateral adhesion, contact
The increase of ablation, arcing and contact resistance.
3. the method for claim 1, it is characterised in that the current resistance value of the acquisition relay, including：
Detect the magnitude of voltage between the positive pole and negative pole of the relay；
The current value of the electric current that detection passes through the relay；
The ratio of the magnitude of voltage and the current value is obtained, as the resistance value.
4. whether the method for claim 1, it is characterised in that described according to the resistance value, judge the relay
Occur damaging, including：
Judge the resistance value whether more than specified resistance value；
It is more than the specified resistance value in response to the resistance value, determines that damaging occurs in the relay；
The specified resistance value is less than or equal in response to the resistance value, determines that damaging does not occur in the relay.
5. method as claimed in claim 3, it is characterised in that the electricity between the positive pole and negative pole of the detection relay
Pressure value, including：
Collection first voltage signal；
The isolation processing of high-voltage signal is carried out to the first voltage signal, the low pressure letter in the first voltage signal is obtained
Number；
The low-voltage signal is converted to into d. c. voltage signal；
The interference signal in the d. c. voltage signal is removed, second voltage signal is obtained；
According to the second voltage signal, the magnitude of voltage is detected.
6. method as claimed in claim 3, it is characterised in that the current value that the detection passes through the relay, including：
Gather the first current signal；
First current signal is converted to into DC current signal；
The interference signal in the DC current signal is removed, the second current signal is obtained；
According to second current signal, the current value is detected.
7. a kind of detection means, it is characterised in that described device includes：
Collecting unit, the resistance value current for obtaining relay；
Detector unit, for according to the resistance value, judging whether the relay occurs damaging.
8. device as claimed in claim 7, it is characterised in that the damage at least includes following one kind：Monolateral adhesion, contact
The increase of ablation, arcing and contact resistance.
9. device as claimed in claim 7, it is characterised in that the collecting unit, specifically for：
Detect the magnitude of voltage between the positive pole and negative pole of the relay；
The current value of the electric current that detection passes through the relay；
The ratio of the magnitude of voltage and the current value is obtained, as the resistance value.
10. device as claimed in claim 7, it is characterised in that the detector unit, specifically for：
Judge the resistance value whether more than specified resistance value；
It is more than the specified resistance value in response to the resistance value, determines that damaging occurs in the relay；
The specified resistance value is less than or equal in response to the resistance value, determines that damaging does not occur in the relay.
11. devices as claimed in claim 9, it is characterised in that the collecting unit is used to detect the positive pole of the relay
During magnitude of voltage and negative pole between, specifically for：
Collection first voltage signal；
The isolation processing of high-voltage signal is carried out to the first voltage signal, the low pressure letter in the first voltage signal is obtained
Number；
The low-voltage signal is converted to into d. c. voltage signal；
The interference signal in the d. c. voltage signal is removed, second voltage signal is obtained；
According to the second voltage signal, the magnitude of voltage is detected.
12. devices as claimed in claim 9, it is characterised in that the collecting unit is used for detection by the relay
During the current value of electric current, specifically for：
Gather the first current signal；
First current signal is converted to into DC current signal；
The interference signal in the DC current signal is removed, the second current signal is obtained；
According to second current signal, the current value is detected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610958924.1A CN106569128B (en) | 2016-11-03 | 2016-11-03 | Detection method and device |
| PCT/CN2017/093060 WO2018082339A1 (en) | 2016-11-03 | 2017-07-15 | Detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958924.1A CN106569128B (en) | 2016-11-03 | 2016-11-03 | Detection method and device |
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| Publication Number | Publication Date |
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| CN106569128A true CN106569128A (en) | 2017-04-19 |
| CN106569128B CN106569128B (en) | 2019-07-30 |
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| CN201610958924.1A Active CN106569128B (en) | 2016-11-03 | 2016-11-03 | Detection method and device |
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| WO (1) | WO2018082339A1 (en) |
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| CN112072617A (en) * | 2020-08-07 | 2020-12-11 | 王嘉欣 | Direct current circuit breaking controller |
| CN112213631A (en) * | 2020-09-03 | 2021-01-12 | 珠海格力电器股份有限公司 | Relay state detection device and method and automobile |
| CN114217220A (en) * | 2022-02-23 | 2022-03-22 | 深圳市德兰明海科技有限公司 | Switch detection circuit and method and switch detector |
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| CN108556627B (en) * | 2018-05-21 | 2024-05-07 | 北京豆牙科技有限公司 | Automobile intelligent accelerator control system capable of preventing mistaken stepping on accelerator |
| CN113406486B (en) * | 2020-03-17 | 2024-05-24 | 上海汽车集团股份有限公司 | Relay detection circuit, relay detection method, relay, power system and automobile |
| CN112415372B (en) * | 2020-11-10 | 2024-05-17 | 科大智能（合肥）科技有限公司 | Relay adhesion detection circuit |
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Also Published As
| Publication number | Publication date |
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| WO2018082339A1 (en) | 2018-05-11 |
| CN106569128B (en) | 2019-07-30 |
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