CN107797057A - Relay adhesive effect detection device and method - Google Patents
Relay adhesive effect detection device and method Download PDFInfo
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- CN107797057A CN107797057A CN201711181511.8A CN201711181511A CN107797057A CN 107797057 A CN107797057 A CN 107797057A CN 201711181511 A CN201711181511 A CN 201711181511A CN 107797057 A CN107797057 A CN 107797057A
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- relay
- electrically connected
- resistance
- adhesive effect
- voltage
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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
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- General Physics & Mathematics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses relay adhesive effect detection device and method, is related to relay adhesive effect detection technical field.The present invention provides a kind of relay adhesive effect detection device, including sampling unit, processing unit and display unit, and sampling unit is electrically connected with processing unit, and processing unit is electrically connected with display unit.Sampling unit is used to be electrically connected with relay, and for detecting the voltage difference between the stationary contact of relay two and transmitting voltage difference to processing unit.Processing unit calculates the contact resistance between the stationary contact of relay two according to voltage difference, also by adhesive information transfer to display unit.Present invention also offers a kind of relay adhesive effect detection method implemented using relay adhesive effect detection device.Relay adhesive effect detection device and method provided by the invention has the characteristics of easy to use and detection is accurate.Also, its can also be to relay adhesive effect detected in real time.
Description
Technical field
The present invention relates to relay adhesive effect detection technical field, in particular to relay adhesive effect detection
Device and method.
Background technology
This part is it is intended that the embodiments of the present invention stated in claims and embodiment provide background
Or context.Description herein recognizes it is prior art not because not being included in this part.
As industrial automation in recent years develops rapidly, increasing electrical equipment enters the life of people.Relay
As a kind of automatic switch element of the isolation features with IN/OUT, be widely used in communication, electromechanical integration, remote control and
In power electronic equipment.Electromagnetic relay is in use, and when coil current, coil produces magnetic field, and the iron core of coil kind is by magnetic
Change and produce magnetic force so that armature be drawn in the presence of electromagnetic attraction it is unshakable in one's determination either on the contrary, now sound contact closure or
Disconnect, when disconnecting relay current, intimate to lose magnetism, contact is opened or closed under the action of the spring.It is dynamic in use
The quality of stationary contact adhesive effect directly affects the disconnected loading capability of relay, and then sound contact resistance is big for adhesive degree difference.
So the detection of electromagnetic relay adhesive effect becomes a relay important index in use.
In the prior art can not conventional detection relay adhesive effect, be typically only possible by ear and sound judging or use
Secondary pick-up voltage test, that is, using a dc source to relay coil slowly start from scratch apply voltage, when
After electromagnetic relay adhesive, read pick-up voltage and first time pick-up voltage at that time and judgement is analyzed, judged with this
Adhesive effect.
Both relay adhesive effect detection methods although can be used for detect relay adhesive effect, but have with
Lower shortcoming：(1) two methods may be only available in actual production process, but in actual electrical equipment, communication and power electronics
The detection of adhesive effect can not be carried out during equipment use by using both approaches.(2) tested for secondary pick-up voltage
For, it is necessary to which artificial slowly change voltage, and the moment watches display attentively, and detection efficiency is low.When adjusting voltage due to twisting knob
Speed it is different, cause test inaccurate.(3) real-time adhesive effect when can not work electromagnetic relay detects, i.e., without
Method is detected in real time.
The content of the invention
It is an object of the invention to provide a kind of relay adhesive effect detection device, it has simple in construction, user
Just the characteristics of and detection is accurate.Also, its can also be to relay adhesive effect detected in real time.
Another object of the present invention is to provide a kind of relay adhesive effect detection method, it can be to the suction of relay
Effect is closed to be detected in real time.
The present invention provides a kind of technical scheme：
A kind of relay adhesive effect detection device, for detecting the adhesive effect of relay.Relay adhesive effect is examined
Surveying device includes sampling unit, processing unit and display unit, and sampling unit is electrically connected with processing unit, and processing unit is with showing
Show that unit is electrically connected with.Sampling unit is used to be electrically connected with relay, and sampling unit is used to detect the stationary contact of relay two
Between voltage difference and voltage difference is transmitted to processing unit.Processing unit is used to calculate the stationary contact of relay two according to voltage difference
Between contact resistance and the adhesive information for the adhesive effect for characterizing relay is drawn according to contact resistance, processing unit is additionally operable to
By adhesive information transfer to display unit.
Further, above-mentioned processing unit includes electric current read module, computing module and communication module, electric current read module
It is electrically connected with computing module, computing module is electrically connected with communication module, and computing module is electrically connected with sampling unit, communication
Module is electrically connected with display unit.Electric current read module is used to read the current value for flowing through relay, and current value is transmitted
To computing module, computing module is used to calculate contact resistance according to current value and voltage difference and draw sign according to contact resistance
The adhesive information of the adhesive effect of relay, communication module are used for adhesive information transfer to display unit.
Further, above-mentioned relay includes the first stationary contact and the second stationary contact being electrically connected with each other, sampling unit
Including the first sampling module, the second sampling module and voltage difference computing module.One end of first sampling module be used for it is first quiet
Contact is electrically connected with and is used for the first voltage for gathering the first stationary contact.The other end of first sampling module calculates mould with voltage difference
Block is electrically connected with, and one end of the second sampling module is used to being electrically connected with and be used for the second stationary contact the of the second stationary contact of collection
Two voltages, the other end and the voltage difference computing module of the second sampling module are electrically connected with.Voltage difference computing module and processing unit
It is electrically connected with and is used to that the electricity drawn between the first stationary contact and the second stationary contact will to be calculated according to first voltage and second voltage
Pressure difference is transmitted to processing unit.
Further, above-mentioned first sampling module includes first resistor, second resistance and first voltage comparator.First electricity
One end of resistance is used to be electrically connected with the first stationary contact, and the other end of first resistor and one end of second resistance are electrically connected with, the
The other end ground connection of two resistance.Second input of first voltage comparator is electrical close to one end of second resistance with first resistor
Connection, the first input end of first voltage comparator are electrically connected with the output end of first voltage comparator, and first voltage compares
The output end of device is electrically connected with voltage difference computing module.
Further, above-mentioned second sampling module includes 3rd resistor, the 4th resistance and second voltage comparator.3rd electricity
One end of resistance is used to be electrically connected with the second stationary contact, and one end of the other end of 3rd resistor and the 4th resistance is electrically connected with, the
The other end ground connection of four resistance.Second input of second voltage comparator is electrical close to one end of the 4th resistance with 3rd resistor
Connection, the first input end of second voltage comparator are electrically connected with the output end of second voltage comparator, and second voltage compares
The output end of device is electrically connected with voltage difference computing module.
Further, above-mentioned voltage difference computing module include the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and
Tertiary voltage comparator.One end of 5th resistance is electrically connected with the first sampling module, the other end of the 5th resistance and the 3rd electricity
Press the second input of comparator to be electrically connected with, the both ends of the 6th resistance respectively with the second input of tertiary voltage comparator and
The output end of tertiary voltage comparator is electrically connected with.One end of 7th resistance is electrically connected with the second sampling module, the 7th resistance
The first input end of the other end and tertiary voltage comparator be electrically connected with, one end and the tertiary voltage comparator of the 8th resistance
First input end is electrically connected with, the other end ground connection of the 8th resistance.The output end of tertiary voltage comparator and processing unit are electrical
Connection.
Further, above-mentioned display unit is LCD screen or LED screen.
A kind of relay adhesive effect detection method, for detecting the adhesive effect of relay, imitated using relay adhesive
Fruit detection means.Relay adhesive effect detection device includes sampling unit, processing unit and display unit, sampling unit and place
Manage unit to be electrically connected with, processing unit is electrically connected with display unit.Sampling unit is used to be electrically connected with relay, and samples
Unit is used to detect the voltage difference between the stationary contact of relay two and transmit voltage difference to processing unit.Processing unit is used for root
The contact resistance between the stationary contact of relay two is calculated according to voltage difference and show that the adhesive for characterizing relay is imitated according to contact resistance
The adhesive information of fruit, processing unit are additionally operable to adhesive information transfer to display unit.Relay adhesive effect detection method bag
Include：Calculate the voltage difference between two stationary contacts of relay.Obtain the current information of relay.Believed according to voltage difference and electric current
Breath calculates the contact resistance of relay.
Compared with prior art, the beneficial effect of relay adhesive effect detection device and method provided by the invention is：
Two stationary contacts of sampling unit and relay are electrically connected with, sampling power supply gathers the two stationary contacts respectively
Magnitude of voltage, and calculate by the magnitudes of voltage of the two stationary contacts the voltage difference between both.Processing unit is according to relay
The voltage difference of two stationary contacts and the Current calculation of relay go out the contact resistance of relay.Contact resistance reflects relay
Adhesive effect：Contact resistance is bigger, and adhesive effect is poorer；Contact resistance is smaller, and adhesive effect is better.Processing unit is according to contact
The value of resistance judges the quality of relay adhesive effect, and by contact resistance or marks the adhesive of relay adhesive effect and believe
Breath is transmitted to display unit.Display unit is used for the resistance for showing contact resistance or display adhesive information, so that user can be with
Intuitively observed.Relay adhesive effect detection device and method provided by the invention has easy to use and detection accurate
The characteristics of.Also, its can also be to relay adhesive effect detected in real time.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described.It should be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of scope.For those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the structured flowchart for the relay adhesive effect detection device that the first embodiment of the present invention provides.
Fig. 2 is the structured flowchart for the processing unit that the first embodiment of the present invention provides.
Fig. 3 is the structured flowchart for the sampling unit that the first embodiment of the present invention provides.
Fig. 4 is the circuit diagram for the sampling unit that the first embodiment of the present invention provides.
Fig. 5 is the block diagram for the relay adhesive effect detection method that the second embodiment of the present invention provides.
Icon：10- relay adhesive effect detection devices；100- sampling units；The sampling modules of 110- first；111- first
Resistance；112- second resistances；113- first voltage comparators；The sampling modules of 120- second；121- 3rd resistors；The electricity of 122- the 4th
Resistance；123- second voltage comparators；130- voltage difference computing modules；The resistance of 131- the 5th；The resistance of 132- the 6th；The electricity of 133- the 7th
Resistance；The resistance of 134- the 8th；135- tertiary voltage comparators；200- processing units；210- electric current read modules；220- calculates mould
Block；230- communication modules；300- display units；20- relays；The stationary contacts of 21- first；The stationary contacts of 22- second.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is to be understood that the instruction such as term " on ", " under ", " interior ", " outer ", "left", "right"
Orientation or position relationship be based on orientation shown in the drawings or position relationship, or the invention product using when usually put
Orientation or position relationship, or the orientation that usually understands of those skilled in the art or position relationship, be for only for ease of and retouch
State the present invention and simplify description, rather than indicate or imply that signified equipment or element there must be specific orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relatively important
Property.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, " setting ", " even
Connect " etc. term should be interpreted broadly, for example, " connection " can be fixedly connected or be detachably connected, or integratedly connect
Connect；Can be mechanical connection or electrical connection；Can be directly connected to, can also be indirectly connected with by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
Below in conjunction with the accompanying drawings, the embodiment of the present invention is described in detail.
First embodiment
Referring to Fig. 1, a kind of relay adhesive effect detection device 10 is present embodiments provided, for relay 20
Adhesive effect is detected in real time.The relay adhesive effect detection device 10 that the present embodiment provides has simple in construction, use
Facilitate and detect the characteristics of accurate.Also, its can also be to relay 20 adhesive effect detected in real time.
The relay adhesive effect detection device 10 that the present embodiment provides includes sampling unit 100, processing unit 200 and shown
Show unit 300, sampling unit 100 is electrically connected with processing unit 200, and processing unit 200 is electrically connected with display unit 300.
Sampling unit 100 is used to be electrically connected with relay 20, and between two stationary contacts of the sampling unit 100 for detecting relay 20
Voltage difference and voltage difference is transmitted to processing unit 200.Processing unit 200 is used for quiet according to voltage difference 20 liang of relay of calculating
Contact resistance between contact and the adhesive information that the adhesive effect for characterizing relay 20 is drawn according to contact resistance, processing unit
200 are additionally operable to adhesive information transfer to display unit 300.
It is understood that the relay adhesive effect detection device 10 that the present embodiment provides is when in use：Will sampling list
Member 100 and two stationary contacts of relay 20 are electrically connected with, and sampling power supply gathers the magnitude of voltage of the two stationary contacts respectively, and leads to
The magnitude of voltage for crossing the two stationary contacts calculates voltage difference between both.Processing unit 200 is according to two of relay 20
The voltage difference of stationary contact and the Current calculation of relay 20 go out the contact resistance of relay 20.Contact resistance reflects relay 20
Adhesive effect：Contact resistance is bigger, and adhesive effect is poorer；Contact resistance is smaller, and adhesive effect is better.Processing unit 200
The quality of the adhesive effect of relay 20 is judged according to the value of contact resistance, and by contact resistance or marks the adhesive of relay 20 effect
The adhesive information transfer of fruit is to display unit 300.Display unit 300 is used for the resistance for showing contact resistance or display adhesive letter
Breath, so that user can intuitively be observed.
It is also desirable to explanation, after processing unit 200 obtains contact resistance, can directly using contact resistance as
Adhesive information, can also rule of thumb to contact resistance according to the different demarcation of Standard resistance range for adhesive effect is good, adhesive effect
General and adhesive effect is poor, such as：When contact resistance is less than the first resistance, " adhesive effect is shown in display unit 300
It is good "；When the resistance of contact resistance is between the first resistance and the second resistance, " adhesive effect one is shown in display unit 300
As "；When the resistance of contact resistance is more than the second resistance, " adhesive effect is poor " is shown in display unit 300.Certainly, show
Unit 300 can also directly display the resistance of contact resistance.
Referring to Fig. 2, in the present embodiment, processing unit 200 includes electric current read module 210, computing module 220 and led to
Believe module 230, electric current read module 210 is electrically connected with computing module 220, and computing module 220 electrically connects with communication module 230
Connect, computing module 220 is electrically connected with sampling unit 100, and communication module 230 is electrically connected with display unit 300.Electric current is read
Module 210 is used to read the current value for flowing through relay 20, and current value is transmitted to computing module 220, computing module 220 and used
In calculating the adhesive effect that contact resistance and being drawn according to contact resistance characterizes relay 20 according to current value and voltage difference
Adhesive information, communication module 230 are used for adhesive information transfer to display unit 300.
It is understood that the current information for the relay 20 that computing module 220 is read according to electric current read module 210 and
Contact resistance (calculation formula is calculated in the voltage difference for 20 two stationary contacts of relay that sampling unit 100 obtains：R=U/I).
Alternatively, display unit 300 is LCD screen or LED screen etc..
Referring to Fig. 3, in the present embodiment, the first stationary contact 21 and second that relay 20 includes being electrically connected with each other is quiet
Contact 22, sampling unit 100 include the first sampling module 110, the second sampling module 120 and voltage difference computing module 220130.
One end of first sampling module 110 is used to be electrically connected with the first stationary contact 21 and first for gathering the first stationary contact 21 is electric
Pressure.The other end of first sampling module 110 is electrically connected with voltage difference computing module 220130, and the one of the second sampling module 120
Hold for being electrically connected with the second stationary contact 22 and for the second voltage of the second stationary contact 22 of collection, the second sampling module 120
The other end be electrically connected with voltage difference computing module 220130.Voltage difference computing module 220130 and processing unit 200 are electrical
Connect and be used to that the electricity drawn between the first stationary contact 21 and the second stationary contact 22 will to be calculated according to first voltage and second voltage
Pressure difference is transmitted to processing unit 200.
Referring to Fig. 4, in the present embodiment, the first sampling module 110 includes first resistor 111, second resistance 112 and the
One voltage comparator 113.One end of first resistor 111 be used for be electrically connected with the first stationary contact 21, first resistor 111 it is another
End and one end of second resistance 112 are electrically connected with, the other end ground connection of second resistance 112.The second of first voltage comparator 113
Input is electrically connected with first resistor 111 close to one end of second resistance 112, the first input of first voltage comparator 113
End and the output end of first voltage comparator 113 are electrically connected with, and output end and the voltage difference of first voltage comparator 113 calculate mould
Block 220130 is electrically connected with.
In the present embodiment, the second sampling module 120 compares including 3rd resistor 121, the 4th resistance 122 and second voltage
Device 123.One end of 3rd resistor 121 is used to be electrically connected with the second stationary contact 22, the other end of 3rd resistor 121 and the 4th electricity
One end of resistance 122 is electrically connected with, the other end ground connection of the 4th resistance 122.Second input of second voltage comparator 123 and
Three resistance 121 are electrically connected with close to one end of the 4th resistance 122, the first input end of second voltage comparator 123 and the second electricity
The output end of comparator 123 is pressed to be electrically connected with, output end and the electricity of voltage difference computing module 220130 of second voltage comparator 123
Property connection.
That is, the first voltage value of the first stationary contact 21 is by being inputted again to processing unit 200 after amplifying.
It is appreciated that the second voltage value of the second stationary contact 22 is also required to amplification and first voltage value identical multiple, so as to the first electricity
Pressure and second voltage obtain rational result when being calculated.Meanwhile also for the guarantee adhesive effect detection of relay 20
Accuracy and validity.Also, the first voltage and second voltage after amplification also may be used when for calculating voltage difference
To ensure the precision calculated, the accuracy of adhesive effect detection is further improved.
In the present embodiment, voltage difference computing module 220130 includes the 5th resistance 131, the 6th resistance 132, the 7th resistance
133rd, the 8th resistance 134 and tertiary voltage comparator 135.One end of 5th resistance 131 electrically connects with the first sampling module 110
Connecing, the other end of the 5th resistance 131 is electrically connected with the second input of tertiary voltage comparator 135, and the two of the 6th resistance 132
End is electrically connected with the second input of tertiary voltage comparator 135 and the output end of tertiary voltage comparator 135 respectively.7th
One end of resistance 133 is electrically connected with the second sampling module 120, the other end and the tertiary voltage comparator 135 of the 7th resistance 133
First input end be electrically connected with, one end of the 8th resistance 134 electrically connects with the first input end of tertiary voltage comparator 135
Connect, the other end ground connection of the 8th resistance 134.The output end of tertiary voltage comparator 135 is electrically connected with processing unit 200.
The operation principle for the relay adhesive effect detection device 10 that the present embodiment provides：First resistor 111 is used for and the
One stationary contact 21 is electrically connected with, and the first voltage collected is amplified into processing by first voltage comparator 113, and first
Voltage comparator 113 transmits voltage of the first voltage after amplification to the first input end of tertiary voltage comparator 135；The
Three resistance 121 are used to be electrically connected with the second stationary contact 22, and the second voltage collected is passed through into second voltage comparator 123
Processing is amplified, second voltage comparator 123 transmits voltage of the second voltage after amplification to tertiary voltage comparator
135 the second input, tertiary voltage comparator 135 are compared to the first voltage after amplification and second voltage, and by electricity
The result of pressure difference is transmitted to the computing module 220 of processing unit 200.Computing module 220 is according to voltage difference and the electricity of relay 20
Flowmeter calculates contact resistance.
The beneficial effect for the relay adhesive effect detection device 10 that the present embodiment provides：By sampling unit 100 and relay
Two stationary contacts of device 20 are electrically connected with, and sampling power supply gathers the magnitude of voltage of the two stationary contacts respectively, and quiet by the two
The magnitude of voltage of contact calculates the voltage difference between both.Processing unit 200 is according to the voltage of 20 two stationary contacts of relay
The Current calculation of difference and relay 20 goes out the contact resistance of relay 20.Contact resistance reflects the adhesive effect of relay 20：
Contact resistance is bigger, and adhesive effect is poorer；Contact resistance is smaller, and adhesive effect is better.Processing unit 200 is according to contact resistance
Value judges the quality of the adhesive effect of relay 20, and by contact resistance or marks the adhesive information of the adhesive effect of relay 20
Transmit to display unit 300.Display unit 300 is used for the resistance for showing contact resistance or display adhesive information, so as to user
Can intuitively it be observed.The relay adhesive effect detection device 10 that the present embodiment provides has simple in construction, user
Just the characteristics of and detection is accurate.Also, its can also be to relay 20 adhesive effect detected in real time.
Second embodiment
Referring to Fig. 5, a kind of adhesive effect detection method of relay 20 is present embodiments provided, for detecting relay 20
Adhesive effect, using relay adhesive effect detection device 10.Relay adhesive effect detection device 10 includes sampling unit
100th, processing unit 200 and display unit 300, sampling unit 100 are electrically connected with processing unit 200, and processing unit 200 is with showing
Show that unit 300 is electrically connected with.Sampling unit 100 is used to be electrically connected with relay 20, and sampling unit 100 is used to detect relay
Voltage difference between two stationary contacts of device 20 simultaneously transmits voltage difference to processing unit 200.Processing unit 200 is used for according to voltage
Difference calculates the contact resistance between 20 liang of stationary contacts of relay and the adhesive effect for characterizing relay 20 is drawn according to contact resistance
Adhesive information, processing unit 200 is additionally operable to adhesive information transfer to display unit 300.The adhesive effect detection of relay 20
Method includes：Calculate the voltage difference between two stationary contacts of relay 20, obtain the current information of relay 20 and according to electricity
Pressure difference and current information calculate the contact resistance of relay 20.
S100：Calculate the voltage difference between two stationary contacts of relay 20
In the present embodiment, the voltage difference between two stationary contacts of relay 20 is obtained by sampling unit.
S200：Obtain the current information of relay 20
It is understood that the current information that the voltage difference obtained according to S100 obtains with this step, you can connect with drawing
Get an electric shock and hinder.In the present embodiment, the current information of relay 20 is obtained by electric current acquiring unit 210.
S300：The contact resistance of relay 20 is calculated according to voltage difference and current information.
In the present embodiment, contact resistance is obtained by processing unit 200.
It should be noted that after processing unit 200 obtains contact resistance, directly can believe contact resistance as adhesive
Breath, can also rule of thumb to contact resistance according to the different demarcation of Standard resistance range for adhesive effect is good, adhesive effect is general and
Adhesive effect is poor, such as：When contact resistance is less than the first resistance, " adhesive effect is good " is shown in display unit 300；When connecing
When getting an electric shock the resistance hindered between the first resistance and the second resistance, " adhesive effect is general " is shown in display unit 300；When connecing
When the resistance hindered of getting an electric shock is more than the second resistance, " adhesive effect is poor " is shown in display unit 300.Certainly, display unit 300
The resistance of contact resistance can be directly displayed.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
- A kind of 1. relay adhesive effect detection device, for detecting the adhesive effect of relay, it is characterised in that the relay Device adhesive effect detection device includes sampling unit, processing unit and display unit, the sampling unit and the processing unit It is electrically connected with, the processing unit is electrically connected with the display unit；The sampling unit is used to be electrically connected with the relay, and the sampling unit is quiet for detecting the relay two Voltage difference between contact simultaneously transmits the voltage difference to the processing unit；The processing unit is used to calculate the contact resistance and basis between the stationary contact of relay two according to the voltage difference The contact resistance draws the adhesive information for the adhesive effect for characterizing the relay, and the processing unit is additionally operable to the suction Information transfer is closed to the display unit.
- 2. relay adhesive effect detection device according to claim 1, it is characterised in that the processing unit includes electricity Read module, computing module and communication module are flowed, the electric current read module is electrically connected with the computing module, the calculating Module and the communication module are electrically connected with, and the computing module is electrically connected with the sampling unit, the communication module with The display unit is electrically connected with；The electric current read module is used to read the current value for flowing through the relay, and the current value is transmitted to the meter Module is calculated, the computing module is used to calculate the contact resistance and according to described according to the current value and the voltage difference Contact resistance draws the adhesive information for the adhesive effect for characterizing the relay, and the communication module is used for the adhesive information Transmit to the display unit.
- 3. relay adhesive effect detection device according to claim 1, it is characterised in that the relay includes mutual Be electrically connected with the first stationary contact and the second stationary contact, the sampling unit include the first sampling module, the second sampling module and Voltage difference computing module；One end of first sampling module is used to be electrically connected with first stationary contact and be used to gather institute State the first voltage of the first stationary contact；The other end of first sampling module is electrically connected with the voltage difference computing module, One end of second sampling module is used to be electrically connected with second stationary contact and be used to gather second stationary contact Second voltage, the other end of second sampling module are electrically connected with the voltage difference computing module；The voltage difference calculates Module is electrically connected with the processing unit and is used to that described first will to be calculated according to the first voltage and the second voltage The voltage difference drawn between stationary contact and second stationary contact is transmitted to the processing unit.
- 4. relay adhesive effect detection device according to claim 3, it is characterised in that the first sampling module bag Include first resistor, second resistance and first voltage comparator；One end of the first resistor is used for and first stationary contact electricity Property connection, one end of the other end of the first resistor and the second resistance is electrically connected with, the other end of the second resistance Ground connection；Second input of the first voltage comparator electrically connects with the first resistor close to one end of the second resistance Connecing, the output end of the first input end of the first voltage comparator and the first voltage comparator is electrically connected with, and described the The output end of one voltage comparator is electrically connected with the voltage difference computing module.
- 5. relay adhesive effect detection device according to claim 3, it is characterised in that the second sampling module bag Include 3rd resistor, the 4th resistance and second voltage comparator；One end of the 3rd resistor is used for and second stationary contact electricity Property connection, one end of the other end of the 3rd resistor and the 4th resistance is electrically connected with, the other end of the 4th resistance Ground connection；Second input of the second voltage comparator electrically connects with the 3rd resistor close to one end of the 4th resistance Connecing, the output end of the first input end of the second voltage comparator and the second voltage comparator is electrically connected with, and described the The output end of two voltage comparators is electrically connected with the voltage difference computing module.
- 6. relay adhesive effect detection device according to claim 3, it is characterised in that the voltage difference computing module Including the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance and tertiary voltage comparator；One end of 5th resistance is electrically connected with first sampling module, the other end of the 5th resistance and described the Second input of three voltage comparators is electrically connected with, the both ends of the 6th resistance respectively with the tertiary voltage comparator The output end of second input and the tertiary voltage comparator is electrically connected with；One end of 7th resistance is electrically connected with second sampling module, the other end of the 7th resistance and described the The first input end of three voltage comparators is electrically connected with, one end of the 8th resistance and the first of the tertiary voltage comparator Input is electrically connected with, the other end ground connection of the 8th resistance；The output end of the tertiary voltage comparator and the processing Unit is electrically connected with.
- 7. relay adhesive effect detection device according to claim 1, it is characterised in that the display unit is LCD Screen or LED screen.
- A kind of 8. relay adhesive effect detection method, for detecting the adhesive effect of relay, it is characterised in that using right It is required that the relay adhesive effect detection device in 1-7 described in any one, the relay adhesive effect detection method include：Calculate the voltage difference between two stationary contacts of the relay；Obtain the current information of the relay；The contact resistance of the relay is calculated according to the voltage difference and the current information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181511.8A CN107797057A (en) | 2017-11-23 | 2017-11-23 | Relay adhesive effect detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181511.8A CN107797057A (en) | 2017-11-23 | 2017-11-23 | Relay adhesive effect detection device and method |
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| Publication Number | Publication Date |
|---|---|
| CN107797057A true CN107797057A (en) | 2018-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711181511.8A Pending CN107797057A (en) | 2017-11-23 | 2017-11-23 | Relay adhesive effect detection device and method |
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| CN (1) | CN107797057A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108549023A (en) * | 2018-06-21 | 2018-09-18 | 厦门大学 | A kind of relay secondary pick-up voltage detection device and method based on peak-seeking algorithm |
| CN113933575A (en) * | 2021-10-13 | 2022-01-14 | 广州小鹏汽车科技有限公司 | Sampling device, diagnosis method and vehicle |
| CN116106731A (en) * | 2022-09-08 | 2023-05-12 | 深圳深爱半导体股份有限公司 | Relay testing device |
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| CN103163453A (en) * | 2011-12-14 | 2013-06-19 | 中国广东核电集团有限公司 | Nuclear power station relay detection method |
| CN103344913A (en) * | 2013-07-30 | 2013-10-09 | 中国人民解放军第二炮兵装备研究院第三研究所 | Electromagnetic relay testing equipment and method |
| CN103954906A (en) * | 2014-04-03 | 2014-07-30 | 武汉点线科技有限公司 | Device and method for relay state inspection |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103163453A (en) * | 2011-12-14 | 2013-06-19 | 中国广东核电集团有限公司 | Nuclear power station relay detection method |
| CN103344913A (en) * | 2013-07-30 | 2013-10-09 | 中国人民解放军第二炮兵装备研究院第三研究所 | Electromagnetic relay testing equipment and method |
| CN103954906A (en) * | 2014-04-03 | 2014-07-30 | 武汉点线科技有限公司 | Device and method for relay state inspection |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108549023A (en) * | 2018-06-21 | 2018-09-18 | 厦门大学 | A kind of relay secondary pick-up voltage detection device and method based on peak-seeking algorithm |
| CN108549023B (en) * | 2018-06-21 | 2020-01-31 | 厦门大学 | relay secondary pull-in voltage detection device and method based on peak searching algorithm |
| CN113933575A (en) * | 2021-10-13 | 2022-01-14 | 广州小鹏汽车科技有限公司 | Sampling device, diagnosis method and vehicle |
| CN113933575B (en) * | 2021-10-13 | 2023-10-31 | 广州小鹏汽车科技有限公司 | Sampling device, diagnosis method and vehicle |
| CN116106731A (en) * | 2022-09-08 | 2023-05-12 | 深圳深爱半导体股份有限公司 | Relay testing device |
| CN116106731B (en) * | 2022-09-08 | 2023-12-29 | 深圳深爱半导体股份有限公司 | Relay testing device |
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