CN206178101U - A adjustable surge load test device for electromagnetic relay - Google Patents
A adjustable surge load test device for electromagnetic relay Download PDFInfo
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- CN206178101U CN206178101U CN201621102180.5U CN201621102180U CN206178101U CN 206178101 U CN206178101 U CN 206178101U CN 201621102180 U CN201621102180 U CN 201621102180U CN 206178101 U CN206178101 U CN 206178101U
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Abstract
The utility model provides an adjustable surge load test device for electromagnetic relay, wherein, the device includes: experimental operation Terminal, control acquisition circuit, surge load generation unit, surge load generation unit is connected with the electromagnetic relay one -to -one, wherein, test operation Terminal be used for to control acquisition circuit issues the experimental control order to contact current sample information through control acquisition circuit and surge load generation unit receipt electromagnetic relay, thereby control acquisition circuit is used for exporting surge current according to experimental control order regulation surge load generation unit's resistance to electromagnetic relay, surge load generation unit is used for to the predetermined big or small surge current of electromagnetic relay output under control acquisition circuit's control to sampling electromagnetic relay contact current sample information feeds back to through control acquisition circuit experimental operation Terminal. The utility model discloses can the accurate antisurge capability who tests electromagnetic relay.
Description
Technical field
This utility model is related to electromagnetic relay technical field, more particularly to electromagnetic relay electrical contact performance analysis of experiments
Device, is exactly a kind of adjustable surge load testing apparatus for electromagnetic relay specifically.
Background technology
Because electromagnetic relay has a series of irreplaceable advantage of solid electronic devices, such as：It is high conversion level, big defeated
Enter output ratio etc., it is widely used in fields such as Industry Control, communication, electric power, and electromagnetic relay is mainly used in control system
The break-make of power supply and signal.
During actually used electromagnetic relay, due to there is distributed inductance and electric capacity, electromagnetism in side circuit
Relay contact can produce transient overvoltage or excessively stream when being opened and closed, and receive so as to cause electromagnetic relay contact that transient state arc erosion occurs
Damage or adhesion failure, affect the electric life of electromagnetic relay product.Thus, electromagnetic relay product is resisted by surge test
Surge capacity is tested, is analyzed significant.
At present, the research that relay contact affects at home and abroad has been received significant attention for surge, but, also do not have
There is special assay device to carry out surge test to plurality of electromagnetic relay test part automatically according to the requirement of testing program, and instead
Feedback Test Information, existing surge test device is primarily present following shortcoming：
1st, the surge current time be controlled by the discharge and recharge time of adjustment capacitor mostly, precision is not high, is carrying out
The relation of quantitative description surge current time and electric life is difficult to during analysis of experiments；
2nd, when the surge test condition in testing program needs to change or multiple electromagnetic relay testpieces experimental conditions
When inconsistent, need to carry out manual adjustment one by one to each surge test equipment, test efficiency is low；
3rd, during surge test, the monitoring to contact voltage/current waveform needs to be realized by equipment such as oscillographs,
It is difficult to plurality of electromagnetic relay test part while carrying out surge test, and be not easy in testing crew real time inspection process of the test
The Test Information of each testpieces；
4th, circuit structure is fixed, it is difficult to flexible expansion, when testpieces quantity exceedes equipment allows quantity, needs to test people
The manual switching of member is simultaneously tested in batches, and time-consuming for test.
Therefore, those skilled in the art urgently research and develop one kind and can close between quantitative description surge current time and electric life
The high efficiency surge experimental provision of system.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of adjustable wave for electromagnetic relay
Load testing apparatus are gushed, solving existing surge test device cannot relation between quantitative description surge current time and electric life
Problem.
In order to solve above-mentioned technical problem, specific embodiment of the present utility model provides a kind of for electromagnetic relay
Adjustable surge load testing apparatus, including：Test operation terminal and multiple control/collections of test operation terminal connection
Circuit, and the multiple surges load generating unit being connected with the control/Acquisition Circuit, surge load generating unit with
Electromagnetic relay connects one to one, wherein, the test operation terminal is used to issue experiment control to the control/Acquisition Circuit
System order, and the contact current that generating unit receives electromagnetic relay is loaded by the control/Acquisition Circuit and the surge
Sample information；Control/the Acquisition Circuit is used to adjust the surge load generating unit according to the experiment control order
Resistance is so as to electromagnetic relay output surge current；The surge load generating unit is used in the control/collection
The surge current of predefined size, and the contact current of electromagnetic relay of sampling are exported under the control of circuit to electromagnetic relay
Sample information feeds back to the test operation terminal by the control/Acquisition Circuit.
Wherein, the test operation terminal is specifically included：Host computer, for arranging surge experiment parameter and showing contact electricity
Stream waveform；Processor, is connected with the host computer, for generating experiment control order according to the surge experiment parameter.
Wherein, the host computer is PC；The processor is STM32 single-chip microcomputers.
Wherein, the control/Acquisition Circuit is specifically included：Plate selects circuit, main control unit, data acquisition circuit and coil to drive
Galvanic electricity road, wherein, the plate selects the signal input part that enables of circuit to connect with the circuit selection signal output pin of the processor
Connect；The data acquisition control I/O mouth of the main control unit is connected with the data output pins of the data acquisition circuit, the master
The coil drive control I/O mouths of control unit are connected with the control input port of the coil driver, the main control unit
CS ports, IN ports and OUT terminal mouth are connected with the control of the processor with numerical control collection I/O mouths；It is the main control unit, described
The power input of data acquisition circuit and the coil driver selects circuit to be connected with the plate.
Wherein, the plate selects circuit to further include：First relay, with coil and normally opened contact, the coil
One end is connected with after the shorted on one end of the normally opened contact with positive source；Audion, its colelctor electrode is another with the coil
End connection, its grounded emitter；First resistor, one end is connected with the base stage of the audion, the other end and the processor
Circuit selection signal output pin connects；Second resistance, one end is connected with the emitter stage of the audion, the other end and the place
The circuit selection signal output pin connection of reason device.
Wherein, the surge load generating unit is specifically included：The dynamic circuit connector of 3rd resistor, its first end and electromagnetic relay
Stationary contact connects；4th resistance, its first end is connected with the second end of the 3rd resistor, the second end ground connection；5th resistance, its
First end is connected with the dynamic circuit connector stationary contact of electromagnetic relay；Metal-oxide-semiconductor, its drain electrode is connected with the second end of the 5th resistance, base
The C of pole and the control/Acquisition CircuitiPort connects, the E of source electrode and the control/Acquisition CircuitiPort connects；6th is electric
Resistance, its first end is connected with the drain electrode of the metal-oxide-semiconductor, and the second end is connected with the source electrode of the metal-oxide-semiconductor；7th resistance, it first
End is connected with the source electrode of the metal-oxide-semiconductor, the second end ground connection.
Wherein, the resistance of the 3rd resistor is 7500 ohm；The resistance of the 4th resistance is 1000 ohm；Described
The resistance of five resistance is 5.6 ohm；The resistance of the 6th resistance is 22 ohm；The resistance of the 7th resistance is 0.1 ohm.
Wherein, the main control unit is fpga chip；The coil driver be transistor array, the transistor array
The control signal of row is connected with the coil drive control I/O mouths of the main control unit, the output port of the transistor array
Generating unit is loaded by the surge to be connected with electromagnetic relay coil.
Wherein, the data acquisition circuit is further included：Bleeder circuit, follow circuit and A/D conversion chips, wherein,
The E ports of the surge load generating unit are connected to the A/D conversion chips by the bleeder circuit, the follow circuit
Input pin, the output pin of the A/D conversion chips is connected with the data acquisition control I/O mouth of the main control unit.
Wherein, the first end of the 4th resistance is connected with the main control unit.
It can be seen from above-mentioned specific embodiment of the present utility model, for the adjustable surge load test of electromagnetic relay
Device at least has the advantages that：When realizing that the surge current time to multiple electromagnetic relay testpieces, surge are spaced
Between and surge number of times independent control；The surge test of multiple electromagnetic relay testpieces is automatically finished, and is shown in real time every
The surge test persistent period of individual electromagnetic relay testpieces, completed surge number of times and contact current waveform；Can be to one
Individual electromagnetic relay testpieces individually carries out surge load test, it is also possible to carry out independent trialss simultaneously to multiple electromagnetic relays
The surge load test of condition, the Surge handling capability of accurate test electromagnetic relay；Support to each electromagnetic relay testpieces
Correlation test information (such as：Surge test persistent period, completed surge number of times and contact current waveform) real-time monitoring
With inquiry, simultaneously surge load test can be carried out to plurality of electromagnetic relay contact according to the requirement of different tests scheme, be carried
High test efficiency.
It is to be understood that above-mentioned general description and detailed description below are merely illustrative and illustrative, it is not
The scope to be advocated of this utility model can be limited.
Description of the drawings
Following appended accompanying drawing is a part for description of the present utility model, and it depicts example reality of the present utility model
Example is applied, appended accompanying drawing is used for illustrating principle of the present utility model together with the description of description.
A kind of adjustable surge load test for electromagnetic relay that Fig. 1 is provided for this utility model specific embodiment
The schematic block diagram of device；
A kind of schematic block diagram of control/Acquisition Circuit that Fig. 2 is provided for this utility model specific embodiment；
Fig. 3 loads generating unit circuit theory diagrams for a kind of surge that this utility model specific embodiment is provided；
Fig. 4 is negative to surge by control/Acquisition Circuit for a kind of processor that this utility model specific embodiment is provided
Carry the schematic diagram that generating unit is controlled.
Specific embodiment
Purpose, technical scheme and advantage to make this utility model embodiment becomes more apparent, below will with accompanying drawing and
Narration in detail clearly illustrates the spirit of this utility model disclosure, and any skilled artisan is understanding this reality
After embodiment with new content, when the technology that can be taught by this utility model content, it is changed and modifies, it does not take off
From the spirit and scope of this utility model content.
Schematic description and description of the present utility model is used to explain this utility model, but is not intended as to this practicality
New restriction.In addition, element/the component of the same or like label used in drawings and the embodiments is for representing phase
Same or similar portions.
With regard to " first " used herein, " second " ... etc., not especially censure the meaning of order or cis-position,
Be not used to limit this utility model, its only for distinguish with constructed term describe element or operation.
With regard to direction term used herein, for example：Upper and lower, left and right, front or rear etc., are only the sides of refer to the attached drawing
To.Therefore, the direction term for using is for illustrating not for limiting this creation.
With regard to "comprising" used herein, " including ", " having ", " containing " etc., the term of opening is, i.e.,
Mean including but not limited to.
With regard to it is used herein " and/or ", including the things arbitrary or all combinations.
With regard to term used herein " substantially ", " about " etc., to modify it is any can be with the quantity of microvariations or mistake
Difference, but this slight variations or error can't change its essence.In general, the microvariations modified of such term or error
Scope in some embodiments can be 20%, in some embodiments can be 10%, can be in some embodiments 5% or its
His numerical value.It will be understood by those skilled in the art that the aforementioned numerical value for referring to can be adjusted according to actual demand, it is not limited thereto.
Some to describe the word of the application by lower or discuss in the other places of this description, to provide art technology
The extra guiding on about the description of the present application of personnel.
A kind of adjustable surge load test for electromagnetic relay that Fig. 1 is provided for this utility model specific embodiment
The schematic block diagram of device, as shown in figure 1, the adjustable surge load testing apparatus include：Test operation terminal 1 and multiple institutes
Control/the Acquisition Circuit 2 for stating the connection of test operation terminal 1 and the surge load generating unit 3 being connected with electromagnetic relay；It is adjustable
Surge load testing apparatus complete the surge load test to electromagnetic relay.
As illustrated, adjustable surge load testing apparatus mainly include：Test operation terminal 1 is (mainly by the He of host computer 11
Processor 12 is constituted), multiple control/Acquisition Circuit 3, multiple surges load generating unit 3.Host computer 11, processor 12 and control
System/Acquisition Circuit 3 is described in detail below：
(1) host computer 11
The host computer 11 is specifically as follows the PC equipped with test management software, and PC is by CAN and processor
12 connections, PC sends surge test condition setting command by CAN to the processor 12, and PC is additionally operable to show logical
Cross the electromagnetic relay surge load test information of the feedback of processor 12 of CAN reception；It is of the present utility model to be embodied as
In example, surge test condition setting command includes the surge current time of each surge load generating unit, surge interval
Time and surge number of times；The surge load test information includes that the surge test of each surge load generating unit continues
Time, completed surge number of times and electromagnetic relay testpieces contact current sample information.
(2) processor 12
In specific embodiment of the utility model, processor 12 can adopt STM32 single-chip microcomputers, processor 12 to be used to receive
The surge test condition setting command that host computer 11 sends, and feed back the surge load test information of electromagnetic relay testpieces；
The processor 12 is additionally operable to control multiple surges load generating units 3 according to surge test condition by control/Acquisition Circuit 2
Requirement to plurality of electromagnetic relay export surge current.
(3) control/Acquisition Circuit 2
Control/the Acquisition Circuit 2 is used to receive the control command of the transmission of the processor 12, and passes through surge by order
Load 3 pairs of electromagnetic relays specified of generating unit are tested；Control/Acquisition Circuit 2 is additionally operable to during surge test
The contact current sample information of monitoring electromagnetic relay, and the contact current sample information for monitoring is fed back to into processor 12.
A kind of schematic block diagram of control/Acquisition Circuit that Fig. 2 is provided for this utility model specific embodiment, such as Fig. 2
It is shown, each control/Acquisition Circuit 2 include plate select 21, one, the circuit data acquisition circuit 23 of main control unit 22,
One coil driver 24, each control/Acquisition Circuit 2 can connect 8 surge load generating units 3.Wherein, the plate
The signal input part that enables for selecting circuit 21 is connected with the circuit selection signal output pin of the processor 12；The main control unit
22 data acquisition control I/O mouth is connected with the data output pins of the data acquisition circuit 23, the main control unit 22
Coil drive control I/O mouths are connected with the control input port of the coil driver 24, the CS ends of the main control unit 22
Mouth, IN ports and OUT terminal mouth are connected with the control of the processor 12 with data acquisition I/O mouths；It is the main control unit 22, described
The power input of data acquisition circuit 23 and the coil driver 24 selects circuit 21 to be connected with the plate.
Fig. 2 is referred again to, plate selects circuit 21 main by the first relay 211, audion 212, first resistor 213 and second
Resistance 214 is constituted.Wherein, the first relay 211 has coil 2111 and normally opened contact 2112, the coil of the first relay 211
2111 and normally opened contact 2112 shorted on one end after be connected with positive source VCC, the normally opened contact 2112 of the first relay 211
The other end is connected with the power input of main control unit 22, data acquisition circuit 23 and coil driver 24；First relay
The other end of 211 coil 2111 is connected with the colelctor electrode of audion 212, the grounded emitter of audion 212, audion 212
Emitter stage and base stage between connected by first resistor 213 and second resistance 214, first resistor 213 and second resistance 214 it
Between node select the enable signal input part of circuit 21, plate to select the enable signal input part and the processor 12 of circuit 21 for plate
A circuit selection signal output pin be connected.
Data acquisition circuit 23 includes bleeder circuit, follow circuit and A/D conversion chips (not illustrating in figure), surge load
The E ports of generating unit 3 are connected to the input pin of A/D conversion chips, A/D conversion chips by bleeder circuit, follow circuit
Output pin be connected with one group of data acquisition control I/O mouth of main control unit 22；In specific embodiment of the utility model, with
Mainly it is made up of LF356 with circuit, A/D conversion chips can be AD9220.
Coil driver 24 can be made up of transistor array ULN2803,8 control input ports of transistor array
Be connected with one group of coil drive of main control unit 22 control I/O mouths, 8 output ports of transistor array respectively with 8 surges
The D ports of load generating unit 3 are connected.
Main control unit 22 can adopt fpga chip EP2C35F484, one group of data acquisition control I/O of main control unit 22
The data output pins of mouth connection data acquisition circuit 23, one group of coil drive control I/O mouth connection coils of main control unit 22
The control input port of drive circuit 24, one group of control of the CS ports, IN ports and OUT terminal mouth and processor 12 of main control unit 22
System is connected with data acquisition I/O mouths.
Fig. 3 loads generating unit circuit theory diagrams for a kind of surge that this utility model specific embodiment is provided, referring to
Fig. 3, the specific embodiment of surge load generating unit 3 is as follows：
Surge load generating unit 3 specifically include 3rd resistor 31, the 4th resistance 32, the 5th resistance 33, metal-oxide-semiconductor 34, the
Six resistance 35 and the 7th resistance 36, wherein, 3rd resistor 31, its one end is by A ports and the dynamic circuit connector stationary contact of electromagnetic relay
Connection, the other end is connected with B ports；4th resistance 32, its one end is connected with B ports, other end ground connection；5th resistance 33, its
One end is connected with A ports；Metal-oxide-semiconductor 34, its drain electrode is connected with the other end of the 5th resistance 33, and base stage is connected with C-terminal mouth, source
Pole is connected with E ports；6th resistance 35, its one end is connected with the drain electrode of the metal-oxide-semiconductor 34, the other end and the metal-oxide-semiconductor 34
Source electrode connects；7th resistance 36, its one end is connected with the source electrode of the metal-oxide-semiconductor 34, other end ground connection.
In specific embodiment of the utility model, the resistance of 3rd resistor 31 is 7500 ohm；4th resistance 32
Resistance is 1000 ohm；The resistance of the 5th resistance 33 is 5.6 ohm；The resistance of the 6th resistance 35 is 22 ohm；Institute
The resistance for stating the 7th resistance 36 is 0.1 ohm.
Surge load generating unit 3 is used for according to the instruction of control/Acquisition Circuit 2 to electromagnetic relay output surge electricity
Stream；Surge load generating unit 3 be additionally operable to according to control/Acquisition Circuit 2 order-driven correspondingly electromagnetic relay coil (i.e.
Coiling), make electromagnetic relay operate；The surge load generating unit 3 is additionally operable to during electromagnetic relay surge test
Contact current sampled；The surge load generating unit 3 can also be by adjusting the 5th resistance 33, the resistance of the 6th resistance 35
Value is so as to controlling the size of surge current.
Fig. 4 is negative to surge by control/Acquisition Circuit for a kind of processor that this utility model specific embodiment is provided
The schematic diagram that generating unit is controlled is carried, shown in Fig. 4, the processor 12 shown in Fig. 4 is by control/Acquisition Circuit 2 to surge
The schematic diagram that load generating unit 3 is controlled is illustrated, and surge loads the A ports (i.e. terminal A) of generating unit 3 in Fig. 3
Connection electromagnetic relay testpieces dynamic circuit connector stationary contact 4-1, for controlling electromagnetic relay moving together contact group 4-1, the 4-3 surge
The break-make of electric current；In Fig. 3 surge load generating unit 3 B ports (i.e. terminal B) connection control/Acquisition Circuit 2 Bi (i=1,
2 ... 8) ports, for feeding back the level state of electromagnetic relay dynamic circuit connector stationary contact；In Fig. 3 C-terminal mouth (i.e. terminal C) connection control/
Ci (i=1,2 ... the 8) ports, for receiving control signal of the control/Acquisition Circuit 2 to metal-oxide-semiconductor 34 of Acquisition Circuit 2；Figure
Di (i=1,2 ... the 8) ports, for according to the control/collection of D ports (i.e. terminal D) connection control/Acquisition Circuit 2 in 3
Action of the control command of the output of circuit 2 to electromagnetic relay is controlled；E ports (i.e. terminal E) connection in Fig. 3 is controlled/adopted
Ei (i=1,2 ... the 8) ports, for exporting electromagnetic relay to the control/Acquisition Circuit 2 in process of the test of collector 2
The sampled voltage of moving together contact group；The first end of the 3rd resistor 31 and the first end of the 5th resistance 33 and one
The dynamic circuit connector stationary contact connection of electromagnetic relay；The first end ground connection GND of the 4th resistance 32；The second of the 3rd resistor 31
End is connected with the second end of the 4th resistance 32 with terminal B；Second end of the 5th resistance 33 and the 6th resistance 35
First end and metal-oxide-semiconductor 34 drain electrode connection；Second end of the 6th resistance 35 and the first end of the 7th resistance 36 and
The source electrode connection of the metal-oxide-semiconductor 34；The second end ground connection GND of the 7th resistance 36；(resistance is 7500 to the 3rd resistor 31
Ohm) bleeder circuit is constituted with the 4th resistance 32 (resistance is 1000 ohm), for electromagnetic relay dynamic circuit connector stationary contact
Voltage carries out partial pressure, make voltage swing meet the control/Acquisition Circuit 2 incoming level requirement (control/Acquisition Circuit 2
Incoming level requires to be 3.3V), specially when the dynamic circuit connector stationary contact level point is 28V, bleeder circuit is connected：+ 28V → dynamic circuit connector
Contact sets → the 3rd resistor 31 → the 4th 32 → GND of resistance, level is equal to 28V/ (7.5K Ω+1K Ω) at terminal B
× (1K Ω) ≈ 3.3V, when dynamic circuit connector stationary contact level point is 0V, bleeder circuit disconnects, and level is 0V at terminal B；Described 5th is electric
Resistance 33, the 6th resistance 35 and the metal-oxide-semiconductor 34 are used to control electromagnetic relay moving together contact according to the level state of terminal C
The surge current break-make of group；7th resistance 36 (resistance is 0.1 ohm) is carried out for the electric current to flowing through moving together contact group
Sampling.
Electromagnetic relay part mainly includes：
For carrying out the electromagnetic relay testpieces of surge load test, quantity can according to actual needs and the surge is negative
Carry the quantity flexible design of generating unit.
As shown in figure 4, being described in detail by taking the surge load test of electromagnetic relay 1,9 as an example：At test operation end
End arranges surge test condition (the surge current time 5ms of surge load generating unit 1, surge interval 10ms, surge number of times
2000 times；The surge current time 10ms of surge load generating unit 9, surge interval 10ms, surge number of times 1000 times), test
Surge test condition is sent to processor by operation terminal by CAN；Processor enable EN1, EN2, CS1, CS2 port it
Afterwards, the experimental condition of electromagnetic relay testpieces 1,9 is sent to by the and of control/Acquisition Circuit 1 by OUT1, OUT2 port respectively
The IN ports of control/Acquisition Circuit 2, and send on-test order.For electromagnetic relay testpieces 1 (9)：Control/collection
The C1 ports output high level of circuit 1 (2), the metal-oxide-semiconductor in surge load generating unit 1 (9) is by the 6th resistance (22 Europe
Nurse) short circuit；The D1 ports output high level of the control/Acquisition Circuit 1 (2), electromagnetic relay (9) beginning action, the control
System/Acquisition Circuit 1 (2) starts the voltage data of the terminal E for loading generating unit 1 (9) to surge carries out continuous acquisition；When described
When control/Acquisition Circuit 1 (2) detects the terminal B level of surge load generating unit 1 (9) by low uprising, port C1 keeps defeated
Go out high level 5ms (10ms), in the process the conducting of surge loop：+ 28V → moving together contact group → the 5th resistance (5.6 ohm)
→ metal-oxide-semiconductor → the 5th resistance (0.1 ohm) → GND, loop current is equal to 28V/ (Ω of 5.6 Ω+0.1) ≈ 5A；Then, hold
Mouth C1 output low levels, the metal-oxide-semiconductor disconnects, and the 6th resistance accesses loop, load circuit conducting：+ 28V → moving together contact
Group → the 5th resistance (5.6 ohm) → the 6th resistance (22 ohm) → the 7th resistance (0.1 ohm) → GND,
Loop current is 28V/ (Ω of+22 Ω of 5.6 Ω+0.1) ≈ 1A, and the control/Acquisition Circuit 1 (2) stops to surge load generation
The voltage data collection of the terminal E of unit 1 (9)；Electromagnetic relay testpieces 1 (9) completes a surge test, and the control/
Acquisition Circuit 1 (2) surge for collecting is loaded the voltage data of the terminal E of generating unit 1 (9) by OUT terminal mouth and fed back to
The IN1 ports of the processor；The surge number of times of electromagnetic relay 1 (9) is added 1 by the processor, and by CAN by electricity
The surge number of times of magnetic relay 1 (9) and the voltage data of terminal E feed back to test operation terminal, and test operation terminal is by terminal E
Voltage data be converted into the current waveform of the moving together contact group of electromagnetic relay 1 (9), and surge test information is shown；
The C1 ports of the control/Acquisition Circuit 1 (2) are persistently exported after low level 10ms, carry out surge test next time；Until complete
Into 2000 (1000 times) surge number of times, control/Acquisition Circuit 1 (2) to the processor returns to off-test information, the place
Reason device stops enabling EN1, EN2, CS1, CS2 port, and the surge test of electromagnetic relay 1 (9) is completed.The electromagnetism of the present embodiment after
The adjustable surge load testing apparatus of electrical equipment have simple circuit, low cost, can carry out flexible expansion, test according to testing program
Process is without the need for the features such as manually operation, stable performance.
In sum, this utility model above-described embodiment at least also has the advantages that：
1st, this utility model can require according to electromagnetic relay surge test, and by test operation terminal surge examination is arranged
Condition is tested, the surge current time and surge test time so as to automatic, independently controlled one or more groups of electromagnetic relay contacts
Number, can simultaneously perform multigroup testing program, save test period；2nd, the surge examination that host computer can be fed back with real-time reception processor
Information is tested, is easy to testing crew to inquire about；3rd, this utility model circuit structure is succinct, low cost, expansible, process of the test it is complete from
Dynamic, manual intervention is few, and simultaneously multiple electromagnetic relays can be carried out with surge test, reduces experimentation cost.
This utility model provides a kind of adjustable surge load testing apparatus for electromagnetic relay, realizes simultaneously to multiple
The independent control of the surge current time, surge interval time and surge number of times of electromagnetic relay testpieces；It is automatically finished many
The surge test of individual electromagnetic relay, and the surge test persistent period of each electromagnetic relay, completed wave are shown in real time
Gush number of times and contact current waveform；Surge load test can individually be carried out to an electromagnetic relay, it is also possible to multiple electricity
Magnetic relay carries out the surge load test of independent trialss condition simultaneously, the Surge handling capability of accurate test electromagnetic relay；
Hold the correlation test information to each electromagnetic relay (such as：Surge test persistent period, completed surge number of times and contact electricity
Stream waveform) real-time monitoring and inquiry, plurality of electromagnetic relay contact can simultaneously be entered according to the requirement of different tests scheme
Row surge load test, improves test efficiency.
One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or
Flow process is not necessarily implemented necessary to this utility model.
One of ordinary skill in the art will appreciate that：The module in device in embodiment can be according to embodiment description point
In being distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.On
Stating the module of embodiment can merge into a module, it is also possible to be further split into multiple submodule.
Above example only to illustrate the technical solution of the utility model, rather than a limitation；Although with reference to aforementioned reality
Apply example to be described in detail this utility model, it will be understood by those within the art that：It still can be to front
State the technical scheme described in embodiment to modify, or equivalent is carried out to which part technical characteristic；And these are repaiied
Change or replace, do not make the spirit and scope of essence disengaging this utility model embodiment technical scheme of appropriate technical solution.
Claims (10)
1. a kind of adjustable surge load testing apparatus for electromagnetic relay, it is characterised in that the device includes：Test operation
Terminal (1) and multiple control/Acquisition Circuit (2) of the test operation terminal (1) connection, and it is electric with the control/collection
Multiple surges load generating unit (3) of road (2) connection, a pair of surge load generating unit (3) and electromagnetic relay 1
Should connect, wherein,
The test operation terminal (1) for issuing experiment control order to the control/Acquisition Circuit (2), and by described
Control/Acquisition Circuit (2) and surge load generating unit (3) receive the contact current sample information of electromagnetic relay；
Control/the Acquisition Circuit (2) loads generating unit (3) for adjusting the surge according to the experiment control order
Resistance is so as to electromagnetic relay output surge current；
The surge loads generating unit (3) for exporting to electromagnetic relay under the control of the control/Acquisition Circuit (2)
The surge current of predefined size, and the contact current sample information of electromagnetic relay of sampling is by the control/collection electricity
Road (2) feeds back to the test operation terminal (1).
2. the adjustable surge load testing apparatus of electromagnetic relay are used for as claimed in claim 1, it is characterised in that the examination
Test operation terminal (1) to specifically include：
Host computer (11), for arranging surge experiment parameter and showing contact current waveform；And
Processor (12), is connected with the host computer (11), for generating experiment control order according to the surge experiment parameter.
3. the adjustable surge load testing apparatus of electromagnetic relay are used for as claimed in claim 2, it is characterised in that on described
Position machine (11) is PC；The processor (12) is STM32 single-chip microcomputers.
4. the adjustable surge load testing apparatus of electromagnetic relay are used for as claimed in claim 2, it is characterised in that the control
System/Acquisition Circuit (2) is specifically included：Plate selects circuit (21), main control unit (22), data acquisition circuit (23) and coil drive electricity
Road (24), wherein,
The plate selects the enable signal input part of circuit (21) to connect with the circuit selection signal output pin of the processor (12)
Connect；
The data acquisition control I/O mouth of the main control unit (22) connects with the data output pins of the data acquisition circuit (23)
Connect, coil drive control I/O mouths and the control input port of the coil driver (24) of the main control unit (22) connect
Connect, the control and data acquisition I/ of the CS ports, IN ports and OUT terminal mouth of the main control unit (22) with the processor (12)
O mouths connect；
The power input of the main control unit (22), the data acquisition circuit (23) and the coil driver (24) is equal
Circuit (21) is selected to be connected with the plate.
5. the adjustable surge load testing apparatus of electromagnetic relay are used for as claimed in claim 4, it is characterised in that the plate
Circuit (21) is selected to further include：
First relay (211), with coil (2111) and normally opened contact (2112), one end of the coil (2111) with it is described
It is connected with positive source after the shorted on one end of normally opened contact (2112)；
Audion (212), its colelctor electrode is connected with the other end of the coil (2111), its grounded emitter；
First resistor (213), one end is connected with the base stage of the audion (212), the electricity of the other end and the processor (12)
Road selection signal output pin connection；And
Second resistance (214), one end is connected with the emitter stage of the audion (212), the other end and the processor (12)
Circuit selection signal output pin connects.
6. the adjustable surge load testing apparatus of electromagnetic relay are used for as claimed in claim 4, it is characterised in that the wave
Gush load generating unit (3) to specifically include：
3rd resistor (31), its first end is connected with the dynamic circuit connector stationary contact of electromagnetic relay；
4th resistance (32), its first end is connected with the second end of the 3rd resistor (31), the second end ground connection；
5th resistance (33), its first end is connected with the dynamic circuit connector stationary contact of electromagnetic relay；
Metal-oxide-semiconductor (34), its drain electrode is connected with the second end of the 5th resistance (33), base stage and the control/Acquisition Circuit (2)
CiPort connects, the E of source electrode and the control/Acquisition Circuit (2)iPort connects；
6th resistance (35), its first end is connected with the drain electrode of the metal-oxide-semiconductor (34), the source of the second end and the metal-oxide-semiconductor (34)
Pole connects；And
7th resistance (36), its first end is connected with the source electrode of the metal-oxide-semiconductor (34), the second end ground connection.
7. as claimed in claim 6 adjustable surge load testing apparatus for being used for electromagnetic relay, it is characterised in that described the
The resistance of three resistance (31) is 7500 ohm；The resistance of the 4th resistance (32) is 1000 ohm；5th resistance (33)
Resistance be 5.6 ohm；The resistance of the 6th resistance (35) is 22 ohm；The resistance of the 7th resistance (36) is 0.1 Europe
Nurse.
8. the adjustable surge load testing apparatus of electromagnetic relay are used for as claimed in claim 6, it is characterised in that the master
Control unit (22) is fpga chip；The coil driver (24) is transistor array, and the control of the transistor array is defeated
Enter end to be connected with the coil drive control I/O mouths of the main control unit (22), the output port of the transistor array passes through institute
State surge load generating unit (3) to be connected with electromagnetic relay coil (W).
9. the adjustable surge load testing apparatus of electromagnetic relay are used for as claimed in claim 6, it is characterised in that the number
Further include according to Acquisition Circuit (23)：Bleeder circuit (231), follow circuit (232) and A/D conversion chips (233), wherein,
The E ports of surge load generating unit (3) are connected to the A/D by the bleeder circuit, the follow circuit
The input pin of conversion chip, the output pin of the A/D conversion chips and the data acquisition control of the main control unit (22)
I/O mouths connect.
10. the adjustable surge load testing apparatus of electromagnetic relay are used for as claimed in claim 6, it is characterised in that described
The first end of the 4th resistance (32) is connected with the main control unit (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621102180.5U CN206178101U (en) | 2016-09-30 | 2016-09-30 | A adjustable surge load test device for electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621102180.5U CN206178101U (en) | 2016-09-30 | 2016-09-30 | A adjustable surge load test device for electromagnetic relay |
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| Publication Number | Publication Date |
|---|---|
| CN206178101U true CN206178101U (en) | 2017-05-17 |
Family
ID=58677147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621102180.5U Active CN206178101U (en) | 2016-09-30 | 2016-09-30 | A adjustable surge load test device for electromagnetic relay |
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| Country | Link |
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| CN (1) | CN206178101U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154157A (en) * | 2016-09-30 | 2016-11-23 | 国网冀北电力有限公司电力科学研究院 | Adjustable surge load testing apparatus for electromagnetic relay |
| CN112924778A (en) * | 2021-01-25 | 2021-06-08 | 广东机电职业技术学院 | Tester and testing method for reliability of electric appliance |
| CN113552475A (en) * | 2020-04-24 | 2021-10-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Current surge test device |
-
2016
- 2016-09-30 CN CN201621102180.5U patent/CN206178101U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154157A (en) * | 2016-09-30 | 2016-11-23 | 国网冀北电力有限公司电力科学研究院 | Adjustable surge load testing apparatus for electromagnetic relay |
| CN106154157B (en) * | 2016-09-30 | 2023-10-10 | 国网冀北电力有限公司电力科学研究院 | Adjustable surge load test device for electromagnetic relay |
| CN113552475A (en) * | 2020-04-24 | 2021-10-26 | 贵州振华群英电器有限公司（国营第八九一厂） | Current surge test device |
| CN113552475B (en) * | 2020-04-24 | 2023-03-31 | 贵州振华群英电器有限公司（国营第八九一厂） | Current surge test device |
| CN112924778A (en) * | 2021-01-25 | 2021-06-08 | 广东机电职业技术学院 | Tester and testing method for reliability of electric appliance |
| CN112924778B (en) * | 2021-01-25 | 2023-12-05 | 广东机电职业技术学院 | Tester and test method for reliability of electric appliance |
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