CN207380211U - A kind of device of detecting magnetic holding relays in batches - Google Patents

A kind of device of detecting magnetic holding relays in batches Download PDF

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Publication number
CN207380211U
CN207380211U CN201721482535.2U CN201721482535U CN207380211U CN 207380211 U CN207380211 U CN 207380211U CN 201721482535 U CN201721482535 U CN 201721482535U CN 207380211 U CN207380211 U CN 207380211U
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China
Prior art keywords
circuit
relay
detection circuit
batches
detection
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Expired - Fee Related
Application number
CN201721482535.2U
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Chinese (zh)
Inventor
申仲涛
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BEIJING VOCATIONAL COLLEGE OF LABOUR AND SOCIAL SECURITY
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BEIJING VOCATIONAL COLLEGE OF LABOUR AND SOCIAL SECURITY
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Priority to CN201721482535.2U priority Critical patent/CN207380211U/en
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Abstract

The utility model is related to a kind of device of detecting magnetic holding relays in batches, are related to electric control device detection device technology field.Device of detecting magnetic holding relays in batches includes multiple detection stations, electronic combination switch and detection circuit;Detection circuit includes time detection circuit, contact resistance detection circuit.The utility model can detect under rated current and obtain contact resistance value;It and being capable of detection operation time and bounce time, for batch detection magnetic latching relay, bounce time cannot be detected to solve existing test equipment, test result is inaccurate, it is unable to batch detection, volume is big and the technical issues of equipment that do not detect specifically for magnetic latching relay.

Description

A kind of device of detecting magnetic holding relays in batches
Technical field
The utility model is related to electric control device detection device technology field more particularly to a kind of magnetic latching relay batches Detection device.
Background technology
Magnetic latching relay is to develop a kind of very fast new type of relay in recent years, its most distinguishing feature is only to need It need not be electrified for a long time in coil when giving coil of short duration excitation in conversion work state, and working normally, so the electricity of consumption It can be seldom.
At present magnetic latching relay extensively using in fields such as intelligent electric meter, reactive-load compensation, power quality controllings.Due to Its functional reliability is directly related to the reliability service of distribution system and various electric control systems, so to magnetic latching relay Detection just seem particularly necessary, although relay had done test of dispatching from the factory before dispatching from the factory, the use as relay Person, it is still desirable to receiving inspection be carried out to it, to ensure product quality.
, it is necessary to some most concerned projects be examined according to the requirement of product design department, to relay during receiving inspection Relevant parameter is tested, to ensure its accuracy of action and correctness.The parameter testing of relay is to electromagnetic relay Series of features parameter carry out experiment measurement process, including coil resistance, contact resistance, it is pressure-resistant, insulation, time parameter and The test of the projects such as action parameter, the test of actuation time include actuation time, time of return, action bounce time and return again Bounce time etc..
The test method and corresponding test device of relay performance and parameter are mainly used in the manufacturing enterprise of relay In.There are following technological deficiencies for the current prior art:
1) existing equipment can only realize the test of single relay, it is impossible to realize the rapid batch survey to whole plate relay Examination.
2) most of existing test equipment be by the way of timing scan the test action time, the shortcomings that this mode It is that resolution ratio is low, discreteness is big, and cpu load is big, and most existing equipments are not detected bounce time as essential items for inspection in addition.
3) during existing equipment metering contact contact resistance, tested as driving source using simulation low current, do not used Rated current is tested.Since in the state of low current, contact resistance is not reflected really so that test result Deviation is excessive.
4) most of existing test equipments are researched and developed both for relay manufacturer, and test event is various, versatility By force, but bulky, complicated for operation, detection efficiency is low, and speed is slow, is not suitable for the user of relay as receiving inspection It uses.
5) on the market also not specifically for the test equipment of magnetic latching relay.
Utility model content
In view of above-mentioned analysis, the utility model is intended to provide a kind of device of detecting magnetic holding relays in batches, to solve Certainly existing detection device can not batch detection the problem of.The purpose of this utility model is mainly achieved through the following technical solutions 's:
A kind of device of detecting magnetic holding relays in batches, which is characterized in that including multiple detection stations, electronic combination switch And detection circuit;
Each detection station is provided with forceful electric power test clip, and forceful electric power test clip includes end A and end B,;All forceful electric power tests One end of the end A of folder links together, as relay main contact connectivity port;The one of the end B of all forceful electric power test clips End links together, as relay auxiliary contact connectivity port;Main contact connectivity port and auxiliary contact connectivity port pass through One group of electronic combination switch is connected with detection circuit.
The utility model has the beneficial effect that:This equipment set multiple product test stations be conducive to measure simultaneously it is multiple after Electric appliance solves the problems, such as that existing equipment singly can only be tested only, and batch testing accelerates detection speed.Pass through one group of electronic combination Switch is connected with detection circuit, can save space, effectively switches the detection of different type parameter.
On the basis of said program, the present invention has also done following improvement:
Further, detection circuit includes time detection circuit, contact resistance detection circuit and CPU module;
Pass through electronic combination switch gating time detection circuit or contact resistance detection circuit;
Time detection circuit, contact resistance detection circuit are connected respectively with CPU module.
Advantageous effect using above-mentioned further scheme is:Critical component of the contact as relay, be related to entirely after The reliability of electric appliance.So the present apparatus is provided with contact resistance detection circuit in detection circuit.Time detection circuit can be examined It surveys actuation time, action bounce time, time of return and returns to bounce time;CPU module receiving time detection circuit, contact electricity Hinder the detection data of detection circuit;Compensate for the defects of prior art lacks detection bounce time.
Further, the time detection circuit includes relay drive circuit and switching quantity detection circuit;
Relay drive circuit and switching quantity detection circuit are connected respectively with CPU module, relay drive circuit with it is to be measured Relay is connected, and drives the opening and closing of relay to be measured, and switching quantity detection circuit detects pull up time to be measured and rebound Time.
Advantageous effect using above-mentioned further scheme is:The driving circuit of relay is different for relay to be driven to have Action, by the variation of action, switching quantity detection circuit is realized actuation time, action bounce time, time of return and is returned back Jump the monitoring of time.
Further, the switching quantity detection circuit includes optical coupling isolation circuit and shaping circuit;
The end A of forceful electric power test clip of the optical coupling isolation circuit Jing Guo detection station is connected to relay main contact connecting pin Mouthful, the shaped circuit of optical coupling isolation circuit output terminal is connected with CPU module.
Advantageous effect using above-mentioned further scheme is:Using light-coupled isolation and shaping circuit, contact state is converted For Transistor-Transistor Logic level signal, it may be such that bounce time and actuation time can be detected.The prior art is solved not bounce time The defects of as essential items for inspection.
Further, the contact resistance detection circuit includes controllable constant-current source and resistance measuring circuit;
Controllable constant-current source and resistance measuring circuit are connected respectively with CPU module, and controllable constant-current source provides for relay to be measured Rated current, resistance measuring circuit include voltage detector component and current measuring element.
Advantageous effect using above-mentioned further scheme is:The relay rated current of different manufacturers is different, but not More than 30A.CPU is according to the specification of relay, using the controllable constant-current source of 0-30A, simulates the volume of relay to the full extent Determine operating mode.Wherein, electronic switch is used to control the break-make of constant-current supply, and digital potentiometer is used to adjust the amplitude of electric current.The electricity The characteristics of road is that circuit is simple, efficient, reliability is high, is avoided because using simulation low current as test and excitation source so that Test result influence bigger than normal.
Further, the controllable constant-current source includes electronic switch and digital regulation resistance;
Electronic switch is connected with digital regulation resistance;
Electronic switch is used to control the break-make of constant-current source, and digital potentiometer is used for the current amplitude that controllable constant-current source is adjusted to export Size.
Advantageous effect using above-mentioned further scheme is:The relay rated current of different manufacturers is different, but not More than 30A.According to the specification of relay, using the controllable constant-current source of 0-30A, according to debugging, relay is simulated to the full extent The declared working condition of device.Wherein, electronic switch is used for the break-make that the break-make digital potentiometer of constant-current supply is controlled to be used to adjust electric current. The characteristics of circuit is that circuit is simple, efficient, reliability is high, avoid because using simulation low current as test and excitation source, So that the influence that test result is bigger than normal.
Further, the current measuring element is realized using the current divider of 75mV/30A, after signal conditioning circuit It is sent into A/D converter;
The direct metering contact resistance both end voltage of voltage detector component, is sent into A/D converter after modulate circuit;
A/D converter is connected by spi bus and CPU module communication.
Advantageous effect using above-mentioned further scheme is:It is flowed through according to the voltage at contact resistance both ends and contact resistance Electric current (rated current), resistance value is calculated using Ohm's law.It is tested using rated current as driving source, can cause contact Resistance is truer compared with low current driving source resistance value.Millivolt signal is directly measured using the amplifier inside ADC, is simplified External circuit.Data are transmitted using spi bus so that data transmission is fast, easy to use.
Further, the device of detecting magnetic holding relays in batches further includes the communication module being connected with CPU module.
Advantageous effect using above-mentioned further scheme is:Communication module is wireless transport module, by data wirelessly to pass Defeated form sends backstage to, convenient for data statistics, the difference of statistics different batches relay.
Further, the device of detecting magnetic holding relays in batches further includes the man-machine module being connected with CPU;
The man-machine module includes touch-screen.
Advantageous effect using above-mentioned further scheme is:By the detection of man-machine module operational relay, only need to click on It can the test of finishing device, display data.
Further, the device of detecting magnetic holding relays in batches is encapsulated as a Portable machine box;Detection station, touch-screen Positioned at case front panel, electronic combination switch and detection circuit are located at cabinet inside.
Advantageous effect using above-mentioned further scheme is:Testing equipment is encapsulated as a Portable machine box, detection station, Touch-screen is located at case front panel so that operation detection is more convenient.Electronic combination switch and detection circuit are located at cabinet inside. Detection circuit module can be protected interference-free.And portable cabinet, it is small, it is light-weight, it is easy to carry.
Other feature and advantage of the utility model will illustrate in the following description, also, from froming the perspective of the advantages of part It becomes apparent in bright book or is understood by implementing the utility model.The purpose of this utility model and other advantages can It realizes and obtains by specifically noted structure in the specification, claims and attached drawing write.
Description of the drawings
Attached drawing is only used for showing the purpose of specific embodiment, and is not considered as the limitation to the utility model, entire In attached drawing, identical reference symbol represents identical component.
Fig. 1 is batch testing schematic diagram;
Fig. 2 is switching value test module;
Fig. 3 is controllable constant-current source schematic diagram;
Fig. 4 is resistance measuring module schematic diagram;
Fig. 5 is device of detecting magnetic holding relays in batches structure diagram;
Fig. 6 is magnetic latching relay batch-testing device cabinet figure.
Specific embodiment
The preferred embodiment of the utility model is specifically described below in conjunction with the accompanying drawings, wherein, attached drawing forms the application one Divide, and be used to illustrate the principle of the utility model together with the embodiment of the utility model.
The utility model is related to a kind of function of batch detection magnetic latching relay and the devices of performance, which can be real Function, various actions time, the contact resistance resistance value of existing batch detection magnetic latching relay.
A kind of device of detecting magnetic holding relays in batches is present embodiments provided, including multiple detection stations, electronic combination Switch and detection circuit.As shown in Figure 1, multiple relays are placed in each detection station, set in each detection station There is forceful electric power test clip, forceful electric power test clip includes end A and end B;One end of the end A of all forceful electric power test clips is connected to one It rises, as relay main contact connectivity port;One end of the end B of all forceful electric power test clips links together, as relay Auxiliary contact connectivity port;Main contact connectivity port and auxiliary contact connectivity port pass through one group of electronic combination switch and detection electricity Road connects.
This equipment sets multiple product test stations, connects a relay to be measured between the two ends of each test station during detection Device is conducive to realize the measurement of multiple relays simultaneously, solves the problems, such as that existing equipment singly can only be tested only, batch testing adds Fast detection speed.It is connected by one group of electronic combination switch with detection circuit, space can be saved, effectively switches different type ginseng Several detections.
Preferably, detection circuit includes time detection circuit, contact resistance detection circuit and CPU module;Pass through electronics group Combination switch gating time detection circuit or contact resistance detection circuit.
It should be noted that CPU module can be achieved using existing various chips, the present apparatus employs 32 of ST companies ARM chips by measured current and voltage signals data transmission to CPU, are calculated further according to Ohm's law, and program is normal Regulation sequence, the present embodiment are not related to the improvement to its procedural agreement.
Specifically, time detection circuit, contact resistance detection circuit are connected respectively with CPU module.Contact is as relay Critical component, be related to the reliability of entire relay, and the size of the contact resistance of contact is the most important finger of contact Mark.So the present apparatus is provided with out a resistance detecting circuit in detection circuit.Time detection circuit can detect relay Actuation time, action bounce time, time of return and return bounce time.It compensates for the prior art and lacks detection bounce time Defect.
Time detection circuit includes relay drive circuit and switching quantity detection circuit;
Specifically, relay drive circuit and switching quantity detection circuit are connected respectively with CPU module, relay drive circuit It is connected with relay to be measured, drives the opening and closing of relay to be measured, switching quantity detection circuit detects pull up time to be measured And bounce time.
The driving circuit of relay is used to drive the different action that has of relay, only by the variation of these actions, Switching quantity detection circuit can just monitor actuation time, action bounce time, time of return and return to bounce time.
Preferably, switching quantity detection circuit includes optical coupling isolation circuit and shaping circuit.
Specifically, as shown in Fig. 2, when detecting, the main contacts of relay parallel connection is connected with optical coupling isolation circuit, obtains Signal is connected by shaping circuit with CPU module.Using light-coupled isolation and shaping circuit, contact state is converted into Transistor-Transistor Logic level Signal may be such that bounce time and actuation time can be detected.The prior art is solved not using bounce time as must examine The defects of project.
Contact resistance detection circuit includes controllable constant-current source and resistance measuring circuit;
Specifically, controllable constant-current source and resistance measuring circuit are connected respectively with CPU module, and controllable constant-current source is relay to be measured Device provides its electric current, and the voltage and the actual current by contact resistance at resistance measuring circuit detection contact resistance both ends will be surveyed The voltage and current data obtained are passed to CPU module.The resistance value very little of contact is usually tens milliohms, in order to improve measurement essence Degree, the utility model measure its contact resistance equal to the DC current of its rated current using amplitude as driving source.
Preferably, controllable constant-current source includes electronic switch and digital regulation resistance.As shown in figure 3, the power supply that CPU is provided passes through Electronic switch and digital regulation resistance provide the rated current power supply of suitable relay for relay.Electronic switch is controllable for controlling The break-make of constant-current source, digital regulation resistance are used to adjust the current amplitude size of A/D converter output.
Specifically, the relay rated current of different manufacturers is different, but no more than 30A.According to the specification of relay, Using the controllable constant-current source of 0-30A, according to debugging, the declared working condition of relay is simulated to the full extent.Wherein, electronic switch For controlling the break-make of constant-current supply, digital potentiometer is used to adjust the amplitude of electric current.The characteristics of circuit, is that circuit is simple, imitates Rate is high, reliability is high, avoids because using simulation low current as test and excitation source so that test result influence bigger than normal.
Preferably, the current signal and voltage signal at resistance measuring circuit difference metering contact resistance both ends.Such as Fig. 4 institutes Show, the sampling of current signal is realized using the current divider of 75mV/30A, logical using A/D converter the 4th is sent into after signal condition Road.Voltage signal is directly derived from contact both ends, and the 2nd to 4 passage of A/D converter is sent into after signal condition;A/D converter It is communicated by spi bus and CPU module.
Specifically, the electric current (rated current) flowed through according to the voltage at contact resistance both ends and contact resistance, utilizes ohm Law calculates resistance value.It is tested using rated current as driving source, contact resistance can be caused compared with low current driving source Resistance value is truer.It is the ADC of 24 bits to select CS5534, CS5534 in the A/D converter of this internal amplifier, dynamic property Excellent, tool is there are two differential input terminal, since there is amplifier in inside, it is possible to directly millivolt letter of the measurement from sensor Number, simplify external circuit.Data are transmitted using spi bus so that data transmission is fast, easy to use.
As shown in figure 5, relay to be measured is placed in detection station, it is connected with device of detecting magnetic holding relays in batches. In the inside of device of detecting magnetic holding relays in batches, be resistance measuring circuit, controllable constant-current source, switching quantity detection circuit, after Electrical apparatus driving circuit is connected with relay, and is connected respectively with CPU module.Data are passed through communication module by CPU module respectively It is spread out of with man-machine module.Power circuit is powered for whole equipment.
Preferably, the equipment is placed in a Portable machine box, such as Fig. 6, Portable machine box is rectangular parallelepiped structure, Multiple detection stations, indicator light, button, ammeter, potentiometer, power input, switch and display screen are provided on front panel.
Specifically, 12 product test stations are provided on panel.Each test station is by forceful electric power test clip, coil top Pin and test indicator lamp groups into.2 forceful electric power terminals can bear the electric current of 30A for connecting relay both ends contact;Coil thimble There are 3, for connecting the coil of relay, convenient for dismounting relay during test.Test indicator light is used to indicate test mode.
Preferably, communication module, magnetic latching relay batch are additionally provided in device of detecting magnetic holding relays in batches Detection arrangement monitors to result by communication module pass to backstage.
Specifically, communication module is wireless communication module, the data parameters detected is transferred to backstage using WiFi, just In data statistics, pass through the test to a large amount of relays of different batches, the difference of statistics different batches relay.
Preferably, for the ease of operation, man-machine module is additionally provided in device of detecting magnetic holding relays in batches, this mould Block is connected with the touch-screen on portable case front panel, is only needed point touching screen that can complete data and is shown.
Magnetic latching relay test device further includes power circuit.Power circuit shares the 2 groups of power supplys output being mutually isolated, It is+5V ,+24V respectively.Wherein+5V supplies CPU module, man-machine module, communication module, resistance measuring circuit ,+24V supplies are opened the light Measure input circuit and relay drive circuit.This isolation grouping voltage causes different grouping demands to be met simultaneously.
In conclusion the utility model embodiment provides a kind of device of detecting magnetic holding relays in batches, it can be simultaneously 12 relays of detection can realize the quick measurement of batch relay parameter, and can bear the electric current of 30A;The present apparatus uses can Controllable constant-current source declared working condition of analogue relay on to greatest extent is adjusted to realize the contact resistance measurement of higher precision, It is small and with easy to operate, it is light-weight, it is easy to carry the characteristics of.
The above is only the preferable specific embodiment of the utility model, but the scope of protection of the utility model is not This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, can be readily occurred in Change or replacement, should be covered within the scope of the utility model.

Claims (10)

1. a kind of device of detecting magnetic holding relays in batches, which is characterized in that including multiple detection stations, electronic combination switch and Detection circuit;
Each detection station is provided with forceful electric power test clip, and forceful electric power test clip includes end A and end B;All forceful electric power test clips One end of end A links together, as relay main contact connectivity port;One end of the end B of all forceful electric power test clips connects It is connected together, as relay auxiliary contact connectivity port;Main contact connectivity port and auxiliary contact connectivity port pass through one group Electronic combination switch is connected with detection circuit.
2. device of detecting magnetic holding relays in batches according to claim 1, which is characterized in that the detection circuit includes Time detection circuit, contact resistance detection circuit and CPU module;
Pass through electronic combination switch gating time detection circuit or contact resistance detection circuit;
Time detection circuit, contact resistance detection circuit are connected respectively with CPU module.
3. device of detecting magnetic holding relays in batches according to claim 2, which is characterized in that the time detection circuit Including relay drive circuit and switching quantity detection circuit;
Relay drive circuit and switching quantity detection circuit are connected respectively with CPU module, relay drive circuit and relay to be measured Device is connected, and drives the opening and closing of relay to be measured, and switching quantity detection circuit detects pull up time and bounce time to be measured.
4. device of detecting magnetic holding relays in batches according to claim 3, which is characterized in that the switching value electricity Road includes optical coupling isolation circuit and shaping circuit;
The end A of forceful electric power test clip of the optical coupling isolation circuit Jing Guo detection station is connected to relay main contact connectivity port, light The shaped circuit of coupling isolation circuit output terminal is connected with CPU module.
5. device of detecting magnetic holding relays in batches according to claim 2, which is characterized in that the contact resistance detection Circuit includes controllable constant-current source and resistance measuring circuit;
Controllable constant-current source and resistance measuring circuit are connected respectively with CPU module, and controllable constant-current source provides specified for relay to be measured Electric current, resistance measuring circuit include voltage detector component and current measuring element.
6. device of detecting magnetic holding relays in batches according to claim 5, which is characterized in that the controllable constant-current source bag Include electronic switch and digital regulation resistance;
Electronic switch is connected with digital regulation resistance, and electronic switch is used to control the break-make in controllable constant-current source, and digital regulation resistance is used for Adjust the current amplitude size of controllable constant-current source output.
7. device of detecting magnetic holding relays in batches according to claim 5, which is characterized in that
Current measuring element is realized using the current divider of 75mV/30A, using being sent into A/D converter after signal conditioning circuit;
The direct metering contact resistance two ends voltage of voltage detector component, is sent into A/D converter after signal conditioning circuit;
A/D converter is connected by spi bus and CPU module communication.
8. device of detecting magnetic holding relays in batches according to claim 2, which is characterized in that the magnetic latching relay Batch detecting device further includes the communication module being connected with CPU module.
9. device of detecting magnetic holding relays in batches according to claim 2, which is characterized in that the magnetic latching relay Batch detecting device further includes the man-machine module being connected with CPU;
The man-machine module includes touch-screen.
10. device of detecting magnetic holding relays in batches according to claim 9, which is characterized in that the magnetic keeps relay Device batch detecting device is encapsulated as a Portable machine box;Detection station, touch-screen are located at case front panel, electronic combination switch and Detection circuit is located at cabinet inside.
CN201721482535.2U 2017-11-03 2017-11-03 A kind of device of detecting magnetic holding relays in batches Expired - Fee Related CN207380211U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721482535.2U CN207380211U (en) 2017-11-03 2017-11-03 A kind of device of detecting magnetic holding relays in batches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721482535.2U CN207380211U (en) 2017-11-03 2017-11-03 A kind of device of detecting magnetic holding relays in batches

Publications (1)

Publication Number Publication Date
CN207380211U true CN207380211U (en) 2018-05-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112044811A (en) * 2020-06-15 2020-12-08 黄山旺荣电子有限公司 Relay circuit detection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112044811A (en) * 2020-06-15 2020-12-08 黄山旺荣电子有限公司 Relay circuit detection device

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Granted publication date: 20180518

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