CN109061449A - A kind of AUTOMOTIVE RELAY intelligent checking system and its detection method - Google Patents
A kind of AUTOMOTIVE RELAY intelligent checking system and its detection method Download PDFInfo
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- CN109061449A CN109061449A CN201810470605.5A CN201810470605A CN109061449A CN 109061449 A CN109061449 A CN 109061449A CN 201810470605 A CN201810470605 A CN 201810470605A CN 109061449 A CN109061449 A CN 109061449A
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- relay
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- measured
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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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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of AUTOMOTIVE RELAY intelligent checking systems, comprising: operating unit: for issuing operational order；Controller: for receiving the operational order of operating unit sending, and executing corresponding operating, carries out corresponding Data Detection to relay to be measured, while receiving detection data, and display data output is formed after comparative analysis；Display unit: for receiving the display data of controller output and carrying out corresponding display.The present invention discloses its detection methods.Operation of the present invention is convenient, has the advantages that generalization, automation, wide market.
Description
Technical field
The present invention relates to a kind of AUTOMOTIVE RELAY intelligent checking system and its detection methods, the property suitable for AUTOMOTIVE RELAY
It can detect, belong to intelligent detection equipment technical field.
Background technique
During vehicle inspection and maintenance, relay failure occupies sizeable proportion, in routine work, by automobile relay
Device is connected or is disconnected direct current 12V power supply by lead, the contact break-make situation in situation is corresponded to using multimeter detection, in turn
Judge whether relay is normal.Whole process needs often adjustment connection, cumbersome, takes a long time.In addition, above-mentioned inspection
Survey method, which does not apply contact, to be loaded, and measurement result is not necessarily consistent with real work situation completely in some cases.Therefore,
Need one kind can automatically detect AUTOMOTIVE RELAY work whether normal detection device.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide a kind of high degree of automation, detection are straight rapidly
Sight, AUTOMOTIVE RELAY intelligent checking system with high accuracy and its detection method.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of AUTOMOTIVE RELAY intelligent checking system, comprising:
Operating unit: for issuing operational order；
Controller: for receiving the operational order of operating unit sending, and executing corresponding operating, carries out to relay to be measured corresponding
Data Detection, while receiving detection data, form display data output after comparative analysis；
Display unit: for receiving the display data of controller output and carrying out corresponding display.
Further, above-mentioned operating unit includes the relay types selection driving switch being connected to respectively with controller, touching
Point load current adjusts potentiometer and detection starts switch, wherein relay types selection driving switch is for selecting contact mould
Formula can select a secondary normally opened contact mode, a secondary normally-closed contact mode, a secondary normally-open normally-close contact mode etc., above-mentioned touching
Point load current adjusts the size that potentiometer is used to set contact current, and the detection is started switch and is then used for controller
The enabling signal detected to relay to be measured is provided.
There are three gears for above-mentioned relay types selection driving switch tool, respectively correspond normally opened contact terminal, normally closed touching
Point terminal and normally-open normally-close contact terminal.And above-mentioned contact load current regulation potentiometer is then 30 kilo-ohms of adjustable potential meter
It goes, and the contact current size that the contact load current regulation potentiometer is set is 1~5A.
Further, above-mentioned controller includes input module, memory module, control module and output module, wherein defeated
Enter and be provided with switch input circuit in module, for receiving the operational order of operating unit sending, the switch input circuit
It is connected to operating unit, for realizing the information input of operating unit by controller pin；
The type of relay and the setting value of various performance parameters are provided in the memory module；
Current detecting amplifying circuit and optocoupler driving circuit, the current detecting amplification are provided in the control module
Circuit is connected to relay to be measured, and the coil and contact to relay to be measured carry out current detecting, and will test information conveyance extremely
Controller, the optocoupler driving circuit are connected to relay to be measured, for powering to relay to be measured；
And display circuit is provided in the output module, the display circuit is connected to display unit, for that will show
Data are delivered to display unit.
Filter circuit, operational amplification circuit and voltage clipping electricity are also provided in above-mentioned current detecting amplifying circuit
Road.And accumulation of energy filter circuit and afterflow protection circuit are additionally provided in the optocoupler driving circuit.
In addition, above-mentioned display unit is at least one of LCD display, LED light, instantaneous speech power.
A kind of AUTOMOTIVE RELAY intelligent detecting method based on above-mentioned AUTOMOTIVE RELAY intelligent checking system, including it is following
Step:
(1) AUTOMOTIVE RELAY intelligent checking system initializes: AUTOMOTIVE RELAY intelligent checking system being powered on, while will inspection
The crocodile clip of examining system itself is connect with the pin of relay to be measured；
(2) starting detection: selecting relay types to be measured using operating unit, recycles operating unit selection to relay to be measured
The electric current that applies of contact load, and using contact and coil power supply of the controller to relay to be measured, while detecting contact electricity
The impedance of stream and coil and electric current；
(3) detection data exports: detection data is transferred to controller by analog input pin, then via controller output
Display unit is shown and is reminded.
The invention has the beneficial effects that: the present invention is by the interior relay database established of controller, to the vapour of acquisition
Vehicle relay parameter is judged, provides testing result automatically, and can propose that maintenance is suggested.The present invention has under-voltage overcurrent protection
Function achievees the effect that intelligent measurement, safe and reliable to operation, and during automotive check and maintenance, overcomes whole process
Middle needs often adjustment connection, cumbersome, the characteristics of taking a long time；Directly AUTOMOTIVE RELAY can be inserted using the present invention
Enter socket, compatible different types of AUTOMOTIVE RELAY, a key operation can provide testing result in short several seconds, realize
Run rapid, easy to operate feature；In addition, acquired results of the present invention are accurate, intuitive display, breach routine testing method and do not have
Have and the case where loading is applied to contact, avoids usual measurement result and the inconsistent situation of real work situation, detection accuracy
It can achieve 0.1 ohm/0.1 ampere, testing result can voice broadcast or image be shown in time, are proposed to maintenance personal
Accurate maintenance is suggested.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of AUTOMOTIVE RELAY intelligent checking system of the present invention；
Fig. 2 is the structural schematic diagram two of AUTOMOTIVE RELAY intelligent checking system of the present invention；
Fig. 3 is the circuit diagram of controller of the present invention；
Fig. 4 is the flow chart of AUTOMOTIVE RELAY intelligent detecting method of the present invention.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Embodiment
Fig. 1 is the structural schematic diagram of AUTOMOTIVE RELAY intelligent checking system of the present invention；Fig. 2 is of the present invention
The structural schematic diagram two of AUTOMOTIVE RELAY intelligent checking system.
Referring to Fig. 1 and Fig. 2: AUTOMOTIVE RELAY intelligent checking system, including controller, relay types selection gear are opened
Pass, contact load current regulation potentiometer, detection start switch, LCD display and LED light.
Wherein, relay types selection driving switch is for selecting contact mode, can select a secondary normally opened contact mode,
One secondary normally-closed contact mode, a secondary normally-open normally-close contact mode etc., above-mentioned contact load current regulation potentiometer is for setting
The size of contact current, and the detection starts switch, for opening to controller offer what relay to be measured was detected
Dynamic signal.
In the present embodiment, relay types selection driving switch tool is there are three gear, respectively correspond normally opened contact terminal,
Normally-closed contact terminal and normally-open normally-close contact terminal.And above-mentioned contact load current regulation potentiometer is then 30 kilo-ohms adjustable
The electricity being applied in contact load is arranged according to the potentiometer signal voltage is detected in potentiometer, the analog quantity input of controller
Stream is 1A-5A.Current detecting in the present embodiment is detected using series connection precision resistance, and sampled signal passes through operational amplifier
Controller analog input pin is sent directly into after amplification, filtering.Controller drive metal-oxide-semiconductor to relay coil by optocoupler and
Contact load power supply, and LCD uses 1602-5V indigo plant bottom wrongly written or mispronounced character liquid crystal display, LED uses red and green color common-anode 3mm light-emitting diodes
Pipe.
And controller includes input module, memory module, control module and output module, wherein be arranged in input module
There is switch input circuit, switch input circuit selects driving switch, contact load current regulation current potential with relay types respectively
Meter, detection start switch connection, for realizing that relay types select driving switch, contact load electric current by controller pin
Adjust potentiometer, the information input that detection starts switch, controller receiving relay type selects driving switch, contact load electricity
Stream adjusts potentiometer and detection starts switch the operational order of sending；The type of relay is provided in the memory module of controller
With the setting value of various performance parameters, for detection information transfer and the comparative analysis of detection data；It is set in control module
It is equipped with current detecting amplifying circuit, optocoupler driving circuit, filter circuit, operational amplification circuit, voltage limiter circuit, accumulation of energy filtering
Circuit is protected in circuit and afterflow, and current detecting amplifying circuit is connected to relay to be measured, coil and contact to relay to be measured
Current detecting is carried out, and will test information conveyance to controller, optocoupler driving circuit is connected to relay to be measured, for to be measured
Relay power supply；And display circuit is provided in output module, the display circuit is connected to display unit, for that will show
Registration evidence is delivered to display unit.
Fig. 3 is the circuit diagram of controller of the present invention.
Referring to Fig. 3: wherein K1 is detected relay, and resistance R3, R4, R7 are the electricity of 1 ohm of 10 watts of precision 1%
Resistance generates corresponding voltage signal when automotive relay coil or contact have electric current to flow through the resistance.The one end R7 connection after
Electric apparatus coil cathode, other end ground connection, for detecting K1 coil current.The one end R3 connects relay normally closed contact terminal, another
End ground connection, for detecting normally-closed contact electric current.The one end R4 connects relay normally open contact terminal, other end ground connection, for detecting
Normally opened contact electric current.The one end resistance R5 connects relay normally open contact terminal, and the R5 other end connects the one end resistance R6, and R6 is in addition
One terminal ground, capacitor C2 are in parallel with R6.Zener diode D2 cathode is connected with the points of common connection of R5, R6, C2, the sun of D2
Pole ground connection.The filter circuit of R5, R6, C2 composition is filtered the voltage signal generated on R4, and Zener diode D2 is to the electricity
Signal is pressed to carry out clipping, the signal after clipping is sent to the analog input pin of controller through R12.The one end resistance R2 connects relay
Device normally-closed contact terminal, R2 other end connection one end resistance R1, another terminal ground of R1, capacitor C1 are in parallel with R1.Together
Diode D1 cathode of receiving is connected with the points of common connection of R1, R2, C1, the plus earth of D1.The filter circuit of R1, R2, C1 composition
The voltage signal generated on R3 is filtered, Zener diode D1 carries out clipping to the voltage signal, the signal warp after clipping
R11 is sent to controller analog input pin.The one end resistance R8 connects relay coil cathode, and the other end connects operational amplifier
The in-phase end of A1.The one end capacitor C3 connects A1 in-phase end, other end ground connection.Zener diode D3 cathode connects the in-phase end of A1,
Plus earth.The filter circuit of R8, C3 composition is filtered the voltage signal generated on R7, and Zener diode D3 is to the voltage
Signal carries out clipping, and the signal after clipping is sent to single-chip simulation amount input pin through R13 after operational amplifier A1 amplification.Electricity
It hinders the one end R9 and connects A1 reverse side, other end ground connection.The one end resistance R10 connects A1 reverse side, and the other end connects A1 output end.
The ratio of R10 and R9 determines the amplification factor of signal.The anode of optocoupler U1 light emitting diode connects positive 5V direct current, cathode warp
Resistance R19 connection single-chip microcontroller digital output pin.Optocoupler U1 outlet side emitter terminal ground connection, collector terminal is all the way through resistance
The positive 12V DC electricity of R15 connection, gate pole of the another way through resistance R14 connection PMOS power tube Q1.Controller is controlled by optocoupler U1
PMOS power tube Q1 powers to relay contact to be measured, and controller exports PWM waveform according to contact load current setting value, passes through
The size of PWM adjusting contact load electric current.The anode of optocoupler U2 light emitting diode connects positive 5V direct current, and cathode is through resistance R18
Connect single-chip microcontroller digital output pin.Optocoupler U2 outlet side emitter terminal ground connection, collector terminal are connected through resistance R17 all the way
Positive 12V DC electricity, gate pole of the another way through resistance R16 connection PMOS power tube Q2.Controller controls PMOS function by optocoupler U2
Rate pipe Q2 powers to relay coil to be measured, controls the actuating of relay to be measured.Diode D4 is freewheeling diode, and the anode of D4 connects
Contact relay coil cathode, cathode connect relay coil anode, play afterflow protective effect in circuit.Capacitor C4 rise energy storage and
The effect of filtering.
Fig. 4 is the flow chart of AUTOMOTIVE RELAY intelligent detecting method of the present invention.
It is as shown in Figure 4: a kind of AUTOMOTIVE RELAY intelligent measurement side based on above-mentioned AUTOMOTIVE RELAY intelligent checking system
Method, comprising the following steps: after energization, the initialization of AUTOMOTIVE RELAY intelligent checking system, while will test the crocodile of system itself
Folder is connect with the pin of relay to be measured, and LED light is placed in green, LCD display display operation is prompted；Automobile relay
The button signal of the device intelligent checking system detection to be launched such as always, after enabling signal provides, system reads relay class to be measured
Type and contact load current setting value, contact current when according to relay types, first detection static state, then give relay line
Just whether circle is powered, detect relay coil electric current, coil impedance, contact current and judge relay finally according to related data
Often, and LCD shows related data and as a result, LED provides corresponding instruction.
When user uses the AUTOMOTIVE RELAY detection system, the power supply of 12V power supply adaptor can connect, it can also be by interior
Portion's lithium battery power supply off line uses.Use the preceding crocodile that AUTOMOTIVE RELAY pin to be measured is connected to corresponding detection system first
Folder, then next the electricity wished to relay contact to be measured load application is arranged in selective relay type, at this time device energization
Stream.Start button is pressed, system detects relevant parameter automatically, and after about 1 second, detection is completed.Liquid crystal screen display coil impedance,
Coil current, contact current, judgement are as a result, determine that result is normal or abnormal；The instruction of panel coil and contact instruction two
Whether a light emitting diode indicating relay region of interest is normal, if relay coil failure, coil indication light diode
It takes on a red color.If relay contact failure, contact indication light diode takes on a red color.Under-voltage instruction diode indicates detection system
Supply voltage is lower than under-voltage indicator light red when 11.5V, normal display green.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of AUTOMOTIVE RELAY intelligent checking system characterized by comprising
Operating unit: for issuing operational order；
Controller: for receiving the operational order of operating unit sending, and executing corresponding operating, carries out to relay to be measured corresponding
Data Detection, while receiving detection data, form display data output after comparative analysis；
Display unit: for receiving the display data of controller output and carrying out corresponding display.
2. a kind of AUTOMOTIVE RELAY intelligent checking system according to claim 1, which is characterized in that the operating unit
Including relay types selection driving switch, contact load current regulation potentiometer and the detection starting being connected to respectively with controller
Switch, the relay types selection driving switch is for selecting contact mode, the contact load current regulation current potential
Count the size for setting contact current, and the detection start switch then for controller provide to relay to be measured into
The enabling signal of row detection.
3. a kind of AUTOMOTIVE RELAY intelligent checking system according to required by claim 2, which is characterized in that the relay class
Type selects driving switch tool, and there are three gears, respectively correspond normally opened contact terminal, normally-closed contact terminal and normally-open normally-close tip side
Son.
4. a kind of AUTOMOTIVE RELAY intelligent checking system according to required by claim 2, which is characterized in that the contact load
Current regulation current potential is calculated as 30 kilo-ohms of adjustable potential meter.
5. a kind of AUTOMOTIVE RELAY intelligent checking system according to required by claim 2, which is characterized in that the contact load
The contact current size that current regulation potentiometer is set is 1~5A.
6. a kind of AUTOMOTIVE RELAY intelligent checking system according to claim 1 or 2, which is characterized in that the control
Device includes input module, memory module, control module and output module,
Switch input circuit is provided in the input module, the switch input circuit is connected to operating unit, is used for
The information input of operating unit is realized by controller pin；
The type of relay and the setting value of various performance parameters are provided in the memory module；
Current detecting amplifying circuit and optocoupler driving circuit, the current detecting amplification are provided in the control module
Circuit is connected to relay to be measured, and the coil and contact to relay to be measured carry out current detecting, and will test information conveyance extremely
Controller, the optocoupler driving circuit are connected to relay to be measured, for powering to relay to be measured；
Display circuit is provided in the output module, the display circuit is connected to display unit, for that will show number
According to being delivered to display unit.
7. a kind of AUTOMOTIVE RELAY intelligent checking system according to claim 6, which is characterized in that the current detecting
Filter circuit, operational amplification circuit and voltage limiter circuit are additionally provided in amplifying circuit.
8. a kind of AUTOMOTIVE RELAY intelligent checking system according to claim 6 or 7, which is characterized in that the optocoupler
Accumulation of energy filter circuit and afterflow protection circuit are additionally provided in driving circuit.
9. a kind of AUTOMOTIVE RELAY intelligent checking system according to claim 1, which is characterized in that the display unit
For at least one of LCD display, LED light, instantaneous speech power.
10. a kind of automobile based on AUTOMOTIVE RELAY intelligent checking system described in any one of claim 1-9 claim after
Electric appliance intelligent detecting method, which comprises the following steps:
(1) AUTOMOTIVE RELAY intelligent checking system initializes: AUTOMOTIVE RELAY intelligent checking system being powered on, while will inspection
The crocodile clip of examining system itself is connect with the pin of relay to be measured；
(2) starting detection: selecting relay types to be measured using operating unit, recycles operating unit selection to relay to be measured
The electric current that applies of contact load, and using contact and coil power supply of the controller to relay to be measured, while detecting contact electricity
The impedance of stream and coil and electric current；
(3) detection data exports: detection data is transferred to controller by analog input pin, then via controller output
Display unit is shown and is reminded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470605.5A CN109061449A (en) | 2018-05-17 | 2018-05-17 | A kind of AUTOMOTIVE RELAY intelligent checking system and its detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470605.5A CN109061449A (en) | 2018-05-17 | 2018-05-17 | A kind of AUTOMOTIVE RELAY intelligent checking system and its detection method |
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| CN109061449A true CN109061449A (en) | 2018-12-21 |
Family
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|---|---|---|---|
| CN201810470605.5A Pending CN109061449A (en) | 2018-05-17 | 2018-05-17 | A kind of AUTOMOTIVE RELAY intelligent checking system and its detection method |
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| CN (1) | CN109061449A (en) |
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| CN113447808A (en) * | 2021-08-31 | 2021-09-28 | 江苏正泰泰杰赛智能科技有限公司 | Intelligent household switch module testing tool system and testing method |
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