CN207036947U - A kind of test current based on PLC controls instantaneously switches and supervising device - Google Patents
A kind of test current based on PLC controls instantaneously switches and supervising device Download PDFInfo
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- CN207036947U CN207036947U CN201720830313.9U CN201720830313U CN207036947U CN 207036947 U CN207036947 U CN 207036947U CN 201720830313 U CN201720830313 U CN 201720830313U CN 207036947 U CN207036947 U CN 207036947U
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Abstract
The utility model provides a kind of test current instantaneously switching and supervising device, including the first relay and its 6 times of current paths of control based on PLC controls；Second relay and its 1 times of current path of control；Measuring instrumentss module, touch-screen, PLC obtains the magnitude of voltage measured and current value and obtains power and power factor, and sends data to touch-screen and show, and receives the instantaneous switching command from touch-screen and control two relays instantaneously to be switched；It is preset time that PLC controls the first relay closure according to instantaneous switching command, and the second relay disconnects, and obtains the measurement data of 6 times of current paths, after the scheduled time terminates, the first relay is controlled to disconnect, the second relay closure, the measurement data of 1 times of current path of acquisition.The device is controlled based on PLC, is had transient test function, the current value after can accurately measuring hookup before the handover, is met precision requirement of the detection device to result.
Description
Technical field
It the utility model is related to the detection authentication techniques field of electric equipment products, more particularly to a kind of examination based on PLC controls
Galvanoscope instantaneously switches and supervising device.
Background technology
Appliance switch is as starting or controlling family expenses or similar applications electric device and the electric components of other equipment, extensively
In the general each electric appliances being applied in daily life, for directly cutting off dangerous voltage.Once the security performance of appliance switch goes out
Existing problem, will easily trigger the danger such as get an electric shock, catch fire, and directly injure human life safety and property safety, thus, to it
Connect, breaking capacity carries out the essential step that examination is guarantee product quality.According to GB15092.1-2010《Appliance switch the 1st
Part：General Requirement》The requirement of middle durability test, contact is needed to apply connection and breaking current, turn-on time keeps
After 50ms~100ms, it is switched fast and passes to breaking current value.For resistive or motor load, and perceptual load circuit,
6 times of turn-on current equivalent to rated current.Under such a background, more professional, more accurate, the more efficient electric current letter of research and development
Number collecting device is that we carry out quality inspection and worked vital hardware construction part.
At present, the traditional time relay of the similar test equipment generally use more similar to the utility model and control after
Electrical equipment switches over to circuit.The response speed of equipment is low, on the one hand can not detect transient data in time, on the other hand lack
The writing function of data, trackability is poor, and reliability is low, although test requirements document can be substantially met, can influence detection knot
The precision of fruit.
On the whole, existing detection technique has following defect：
1. for traditional detection device, the response speed of equipment is relatively low, can not detect transient data in time, lack number
According to writing function, trackability is poor, and reliability is low, influences the degree of accuracy of testing result.
2. for detection device general on Vehicles Collected from Market, the not collection in view of 6 times of connections/breaking current value requires,
The measuring range of electric current is typically not greater than 20A, and the indication range of equipment is limited, and the detection range of product is limited to.
Utility model content
The purpose of this utility model is to provide a kind of test current based on PLC controls instantaneously switching and supervising device,
To solve the writing function, influence detection that existing detection device switching circuit response speed is relatively low, reliability is low, lacks data
As a result the problem of degree of accuracy.
To achieve the above object, the utility model provides a kind of test current based on PLC controls instantaneously switching and prison
Device is controlled, including：
First relay and its 6 times of current paths of control；
Second relay and its 1 times of current path of control；
Measuring instrumentss module, for detecting the magnitude of voltage and current value of 6 times of current paths and 1 times of current path；
PLC, work(is worth to for obtaining the magnitude of voltage and current value, and according to the magnitude of voltage and electric current
Rate and power factor, and the magnitude of voltage, current value, power and power factor are sent to the touch-screen and shown, with
And receive the instantaneous switching command from touch-screen and control first relay and the second relay instantaneously to be switched；
Touch-screen, for showing the magnitude of voltage, current value, power and power factor, and obtain first relay
The instantaneous switching command of device and the second relay；
Wherein, when the PLC receives the instantaneous switching command, it is pre- to control the first relay closure
If the time, now the second relay disconnects, and obtains the magnitude of voltage and current value of 6 times of current paths, after the scheduled time terminates, control
Make first relay to disconnect, the second relay closure, and obtain the magnitude of voltage and current value of 1 times of current path.
It is preferred that first relay and the second relay are solid-state relay, the solid-state relay includes：Input
Circuit, isolation circuit and output circuit, the isolation circuit are used to carry out isolation coupling to the input circuit and output circuit.
It is preferred that the measuring instrumentss module includes：
Voltage sensor, the electricity being connected respectively with 6 times of current paths and 1 times of current path when being connected with detection path
Pressure；
Current sensor, the electricity being connected respectively with 6 times of current paths and 1 times of current path when being connected with detection path
Stream；
Signal processing unit, for obtaining the voltage and electric current and carrying out filtering process；
A/D converter, for the signal after filtering process to be converted to the magnitude of voltage and current value of data signal；
It is preferred that the current sensor passes through current transformer and 6 times of current paths and 1 times of current path phase
Even, wherein, the current transformer includes one-level coil and secondary coil, and the one-level coil is connected on 6 times of electric currents and led to
In road and 1 times of current path, the secondary coil is connected with the current sensor.
It is preferred that PLC is connected with the touch-screen by ethernet line, the measuring instrumentss module with it is described
PLC is connected by RS232 connections.
It is preferred that also including power supply module, the power supply module includes measuring instrumentss power supply circuit, load voltage feedback supplies
Circuit and PLC power supply circuit, the measuring instrumentss power supply circuit, load voltage feedback power supply circuit and PLC controls
Device power supply circuit is used for the 24V direct currents after the conversion of 220V electric mains supply the measuring instrumentss, 6 times of electric currents lead to respectively
Road, 1 times of current path and PLC.
The utility model has the advantages that：
(1) particular/special requirement of detection and evaluation method in combination product standard evolution, the utility model are controlled based on PLC,
With transient test function, 6 times of rated current (starting current) can be completed to 1 accurately according to the Millisecond time of setting
The automatic conversion of times rated current, the current value after accurately measuring hookup before the handover, and realize voltage, electric current, work(
The collection and monitoring for the parameters such as rate, power factor, frequency, electric energy be accumulative, meet electric components detection process precision will
Ask；
(2) on the basis of result of the test reliability is ensured, by using more accurately measuring instrumentss, test system is realized
Automation characteristic, complete the upgrading of detection device, improve the detection level of product；
(3) the utility model can realize the monitoring of the most frequently used 8A and 6 times of starting currents of following rated current, and should
Device also can apply to the test parameters detection of the products such as electric automatic controller, coupler, connector.
Brief description of the drawings
Fig. 1 is the device composition schematic diagram of the utility model preferred embodiment.
Embodiment
Below with reference to accompanying drawing of the present utility model, the technical scheme in the embodiment of the utility model is carried out clear, complete
Whole description and discussion, it is clear that as described herein is only a part of example of the present utility model, is not whole realities
Example, based on the embodiment in the utility model, those of ordinary skill in the art institute on the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the utility model.
For the ease of the understanding to the utility model embodiment, make below in conjunction with accompanying drawing by taking specific embodiment as an example into one
The explanation of step, and each embodiment does not form the restriction to the utility model embodiment.
As shown in figure 1, a kind of test current based on PLC controls that the present embodiment provides instantaneously switches and supervising device,
Including：
First relay 21 and its 6 times of current paths 31 of control；
Second relay 22 and its 1 times of current path 32 of control；
Measuring instrumentss module 40, for detecting the magnitude of voltage and current value of 6 times of current paths 31 and 1 times of current path 32；
PLC 10, the magnitude of voltage and current value detected for obtaining measuring instrumentss module 40, and according to acquisition
Magnitude of voltage and current value be calculated power and power factor, and magnitude of voltage, current value, power and power factor are sent out
Deliver to touch-screen 51 to be shown, and receive the instantaneous switching command from touch-screen 51 and control the first relay 21 and second
Relay 22 is instantaneously switched；
Touch-screen 51, belong to data and show/outside input module 50, for showing gathered magnitude of voltage and current value,
Power and power factor are shown simultaneously, and for obtaining the instantaneous switching command of the first relay 21 and the second relay 22.
Wherein, when PLC 10 receives instantaneous switching command, it is preset time to control the first relay 21 closure,
Now the second relay 22 disconnects, and obtains the magnitude of voltage and current value of 6 times of current paths 31, after the scheduled time terminates, control
First relay 21 disconnects, and the second relay 22 closes, and obtains the magnitude of voltage and current value of 1 times of current path 32.
The device controls directly building in load blocks 30 respectively by two relays in circuit handover module 20
Two good current paths, it is convenient directly to control switching to carry out the parameter and 6 times of electricity of 1 times of current path by PLC
The measurement of the parameter of logical circulation road.The device can be applied to the detection field of authentication of electric equipment products, be mainly used in band inductance and electronic
Appliance switch, the durable detection of electric automatic controller of machine load.The device is controlled based on PLC, has transient test work(
Can, can accurately according to the Millisecond time of setting, complete 6 times of rated current (starting current) to 1 times of rated current from
Turn is changed, the current value after accurately measuring hookup before the handover, and realizes voltage, electric current, power, power factor, frequency
The collection for the parameters such as rate, electric energy be accumulative, meets the requirement of electric components detection process precision.And the device is ensuring to test
On the basis of result reliability, by using more accurately intelligence instrument (such as voltage of measuring instrumentss module use, current detecting
Device etc.), the automation characteristic of test system is realized, completes the upgrading of detection device, improves the detection level of product.
In the device that the present embodiment provides, the first relay 21 and the second relay 22 are included in circuit handover module 20
In, both are disposed as solid-state relay, and the solid-state relay includes：Input circuit, isolation circuit and output circuit, wherein,
Isolation circuit is used to carry out isolation coupling to input circuit and output circuit.The solid-state relay is free of moving parts, while can
Realize the handoff functionality of connecting and disconnecting of the circuit, it is possible to achieve switch on and off controlled circuit to contactless, no-spark.Coordinate PLC controls
The instantaneous switching command of device 10 processed, the instantaneous switching of relay is realized, to be switched fast the load path for making its place branch road
It is switched on or switched off rapidly.
Referring again to shown in Fig. 1, the measuring instrumentss module 40 in the present embodiment includes：
Voltage sensor 41, it is connected respectively with 6 times of current paths and 1 times of current path when being connected with detection path
Voltage；
Current sensor 42, it is connected respectively with 6 times of current paths and 1 times of current path when being connected with detection path
Electric current；
Signal processing module 43, for obtaining the voltage and electric current and carrying out filtering process；
A/D converter 44, for the signal after filtering process to be converted to the magnitude of voltage and current value of data signal.
Wherein, current sensor is connected by current transformer with 6 times of current paths and 1 times of current path, wherein,
The current transformer includes one-level coil and secondary coil, and the one-level coil is connected on 6 times of current paths and 1 times of electricity
In logical circulation road, the secondary coil is connected with the current sensor.Current transformer plays current transformation and electrical isolation is made
With high-tension current and low-voltage, high-current are become the relatively low low current of voltage by it, supply instrumentation (voltage sensor, electric current
Sensor) and protective relaying device, and instrumentation and protection device are separated with high-tension circuit.And current transformer is secondary
Side electric current is 5 amperes, and this make it that measuring instrumentss and protective relaying device are safe to use, conveniently, also makes it can be with manufacture
Standardization, simplifies manufacturing process and reduces cost.
In addition, the device also includes power supply module, for the 24V direct currents after 220V electric mains are changed, the power supply
Module includes measuring instrumentss power supply circuit, load voltage feedback power supply circuit and PLC power supply circuit, measuring instrumentss power supply
Circuit, load voltage feedback power supply circuit and PLC power supply circuit are used for the 24V after 220V electric mains are changed respectively
Direct current supply measuring instrumentss, 6 times of current paths, 1 times of current path and PLC.The electricity of civil power is accessed in power supply module
Breaker is provided with road, for being protected to each power supply circuit.
PLC 10 in the present embodiment is connected with touch-screen 51 by ethernet line, and measuring instrumentss module 40 with
PLC 10 is connected by RS232 connections.
When using said apparatus based on the test current that PLC is controlled instantaneously switch, instantaneously cut with carrying out test current
Detection relevant parameter is changed, is specifically included：
PLC obtains the instantaneous switching command of the first relay and the second relay by touch-screen；
It is preset time that PLC control first relay to close according to the instantaneous switching command, now the
Two relays are disconnected, and the magnitude of voltage and current value of 6 times of current paths are obtained by measuring instrumentss module；
After the scheduled time terminates, PLC controls first relay to disconnect, the second relay closure, and passes through
Measuring instrumentss module obtains the magnitude of voltage and current value of 1 times of current path；
Wherein, PLC is worth to power and power factor according to the magnitude of voltage and electric current, and by magnitude of voltage, electricity
Flow valuve, power and power factor carry out real-time display by touch-screen.
The utility model device utilizes current transformer, and electric current is reduced, and can more accurately read electric current
Numerical value.Because larger error can be produced when the numerical value of electric current is excessive, and there is also potential safety hazard, institute for measuring instrumentss
Here to reduce electric current to it by current transformer, then enter by setting scaling in instrument, then to electric current
Row reduction, then the current value of display will be more accurate.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any those skilled in the art is in the technical scope that the utility model discloses, the deformation done to the utility model
Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with described
Scope of the claims is defined.
Claims (6)
1. a kind of test current based on PLC controls instantaneously switches and supervising device, it is characterised in that including：First relay
And its 6 times of current paths of control；
Second relay and its 1 times of current path of control；
Measuring instrumentss module, for detecting the magnitude of voltage and current value of 6 times of current paths and 1 times of current path；PLC,
Power and power factor are worth to for obtaining the magnitude of voltage and current value, and according to the magnitude of voltage and electric current, and will
The magnitude of voltage, current value, power and power factor, which are sent to touch-screen, to be shown, and is received from the instantaneous of touch-screen
Switching command controls first relay and the second relay instantaneously to be switched；
Touch-screen, for showing the magnitude of voltage, current value, power and power factor, and obtain first relay and
The instantaneous switching command of second relay.
2. the test current according to claim 1 based on PLC controls instantaneously switches and supervising device, it is characterised in that
First relay and the second relay are solid-state relay, and the solid-state relay includes：Input circuit, isolation circuit and
Output circuit, the isolation circuit are used to carry out isolation coupling to the input circuit and output circuit.
3. the test current according to claim 1 based on PLC controls instantaneously switches and supervising device, it is characterised in that
The measuring instrumentss module includes：
Voltage sensor, the voltage being connected respectively with 6 times of current paths and 1 times of current path when being connected with detection path；
Current sensor, the electric current being connected respectively with 6 times of current paths and 1 times of current path when being connected with detection path；
Signal processing unit, for obtaining the voltage and electric current and carrying out filtering process；
A/D converter, for the signal after filtering process to be converted to the magnitude of voltage and current value of data signal.
4. the test current according to claim 3 based on PLC controls instantaneously switches and supervising device, it is characterised in that
The current sensor is connected by current transformer with 6 times of current paths and 1 times of current path, wherein, the electric current
Transformer includes one-level coil and secondary coil, and the one-level coil is connected on 6 times of current paths and 1 times of current path
In, the secondary coil is connected with the current sensor.
5. the test current according to claim 1 based on PLC controls instantaneously switches and supervising device, it is characterised in that
PLC is connected with the touch-screen by ethernet line, and the measuring instrumentss module passes through with the PLC
RS232 connections connect.
6. the test current according to claim 1 based on PLC controls instantaneously switches and supervising device, it is characterised in that
Also include power supply module, the power supply module includes measuring instrumentss power supply circuit, load voltage feedback power supply circuit and PLC controls
Device power supply circuit, the measuring instrumentss power supply circuit, load voltage feedback power supply circuit and PLC power supply circuit are used to divide
24V direct currents after 220V electric mains are not changed supply the measuring instrumentss, 6 times of current paths, 1 times of current path and
PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830313.9U CN207036947U (en) | 2017-07-10 | 2017-07-10 | A kind of test current based on PLC controls instantaneously switches and supervising device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720830313.9U CN207036947U (en) | 2017-07-10 | 2017-07-10 | A kind of test current based on PLC controls instantaneously switches and supervising device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207036947U true CN207036947U (en) | 2018-02-23 |
Family
ID=61466016
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720830313.9U Expired - Fee Related CN207036947U (en) | 2017-07-10 | 2017-07-10 | A kind of test current based on PLC controls instantaneously switches and supervising device |
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| Country | Link |
|---|---|
| CN (1) | CN207036947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109239442A (en) * | 2018-11-08 | 2019-01-18 | 广东电网有限责任公司 | Split-core type meter loop switch device and split-core type meter |
| CN114034896A (en) * | 2021-11-15 | 2022-02-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | Current multiplication device, control method and control device |
-
2017
- 2017-07-10 CN CN201720830313.9U patent/CN207036947U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109239442A (en) * | 2018-11-08 | 2019-01-18 | 广东电网有限责任公司 | Split-core type meter loop switch device and split-core type meter |
| CN114034896A (en) * | 2021-11-15 | 2022-02-11 | 中国南方电网有限责任公司超高压输电公司柳州局 | Current multiplication device, control method and control device |
| CN114034896B (en) * | 2021-11-15 | 2024-05-24 | 中国南方电网有限责任公司超高压输电公司柳州局 | Current multiplying device, control method and control device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20180710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |