CN105067998A - Voltage and current fluctuation detector - Google Patents
Voltage and current fluctuation detector Download PDFInfo
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- CN105067998A CN105067998A CN201510514025.8A CN201510514025A CN105067998A CN 105067998 A CN105067998 A CN 105067998A CN 201510514025 A CN201510514025 A CN 201510514025A CN 105067998 A CN105067998 A CN 105067998A
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Abstract
The invention discloses a voltage and current fluctuation detector which is stable, convenient and efficient. The detector comprises a power supply module, a control contactor, a voltage sensor, a current sensor, an intelligent voltmeter, an intelligent ammeter, a test interface, a load box and control mechanisms, wherein the power supply module comprises a power supply A which supplies power to a load and a power supply B which supplies power for the detector, and the control mechanisms include a control mechanism A, a time control mechanism B and a load control mechanism C. The detector uses the intelligent voltmeter, the intelligent ammeter and the time control mechanism to detect voltage and current fluctuation of a detected relay, voltage and current fluctuation limits are set according to parameter requirements of the detected product, the time control mechanism automatically start the relay at interval after electrification, voltage and current fluctuation values are detected, the time control mechanism stops timing and detection when the set values are exceeded, and the frequency and life are calculated according to detection time length and the starting interval. The device is simple, the automation degree is high, and the quality and efficiency of relay detection posts can be greatly improved.
Description
Technical field
The invention belongs to detection type electrical equipment, be specially a kind of electric current and voltage surge detection device.
Background technology
Relay and contactor are automatically and a kind of control device of remote operation, are one of important execution components and parts of the aircraft such as Aeronautics and Astronautics, are responsible for the effect that signal control, conversion, transmission etc. are important.The classical insulation of relay and contactor product is the guarantee of product quality, and the checking of classical insulation carries out in durability test examination.But in durability test process, the voltage of applying and load current are key indexs, the size of electric current and voltage undulating quantity directly affects the checking of properties of product in durability test examination process.
Along with the development of technology, in Aeronautics and Astronautics, many fields such as civilian, need the performance index of relay and contactor product more and more higher.Product performance index is all verified in life of product process of the test, and durability test needs durability test pick-up unit, and trial voltage electric current is again have suffered the key index in checking performance process.Electric current and voltage is in the past all indicate with common voltage table and reometer, and electric current and voltage fluctuates, and exceeds testing requirements scope, cannot realize automatically switching, and is all control artificially.Now adopt high-precision intelligent voltage table and Intelligent current table to monitor the voltage and current value be added in durability test process.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of collection stable, convenient, efficient electric current and voltage surge detection device.
In order to achieve the above object, the technical scheme adopted is:
A kind of electric current and voltage surge detection device, it comprises power module, control contactor, voltage sensor, current sensor, intelligent voltage table, Intelligent current table, test interface, Burden box and control gear, described power module comprises to be provided the power supply A of power supply for load and provides the power supply B of internal electric source for pick-up unit, and described control gear comprises the control gear A, time controller B and the load control mechanism C that control described control contactor;
Described power supply A is that Burden box is powered, and power supply A is connected with the control contactor as two-way gauge tap, is parallel with voltage sensor after control contactor, is connected with test interface and current sensor between voltage sensor and Burden box; Described voltage sensor, current sensor connect intelligent voltage table and Intelligent current table respectively, and intelligent voltage table and Intelligent current table are connected respectively to control gear A again;
Described time controller B is connecting test interface and intelligent voltage table respectively, and after intelligent voltage table detects that Burden box powers on, time controller B fixed time interval starts the input coil of test interface; Power supply B connects load control mechanism C, and load control mechanism C can test with different capacity by control overhead case; Intelligent voltage table and Intelligent current table can detect transfinite voltage or electric current, and the signal that will transfinite is sent to control gear A, and control gear A disconnects control contactor after receiving the signal that transfinites, and terminate test.
Described intelligent voltage table and Intelligent current table have voltage, current detecting bound is arranged, if tested voltage or electric current exceed restriction, then the signal that will transfinite is sent to control gear A.
Described time controller B is connected on the control end coil of test interface repeat circuit; During test, first measured relay is connected to test interface, by reset control contactor, voltage sensor is powered on, after intelligent voltage table detects power on signal, time controller B starts timing, and starts the input coil of test interface according to setting-up time fixed time interval; After control contactor disconnects, power on signal lost by intelligent voltage table, and time controller B stops timing and disconnects test interface.
Described Intelligent current table has Monitoring lower-cut delay protection, only have when tested electric current on the fixed time interval being greater than time controller B always lower than preset lower limit, just can send the signal that transfinites.
The test life-span of measured relay is the fixed time interval of timing divided by setting of time controller B in test process.
The beneficial effect of employing technique scheme is: this electric current and voltage surge detection device adopts intelligent voltage table, Intelligent current table and time controller to detect the electric current and voltage fluctuation of measured relay, according to the parameter requirements of test product, the restriction of fluctuation up and down of setting voltage, electric current, time controller automatic spacing starting relay after powering on, detect the undulating quantity of voltage, electric current always, after exceeding setting value, time controller stops timing and test, by length of testing speech and startup interval calculation life.Equipment is simple, and automaticity is high, greatly can improve quality and the efficiency in relay test post.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of electric current and voltage surge detection device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further, but the present invention is not limited to following embodiment, in the ken that those of ordinary skill in the art possess, also may makes many variations to it.
As Fig. 1, a kind of electric current and voltage surge detection device, comprises power module, control contactor, voltage sensor, current sensor, intelligent voltage table, Intelligent current table, test interface, Burden box and control gear.Described power module comprises to be provided the primary power A of power supply for load and provides the power supply B of internal electric source for pick-up unit, and described control gear comprises the control gear A, time controller B and the load control mechanism C that control described control contactor.
Primary power A connects externally fed, be the operating voltage of busy relay, power supply A is through the control contactor as two-way gauge tap, voltage sensor is connected with at the output terminal of control contactor, be connected with test interface and current sensor between voltage sensor and Burden box, power supply A is that Burden box is powered.Voltage sensor, current sensor are by retarder, and respectively as the detecting sensor of voltage, electric current, and connect intelligent voltage table and Intelligent current table respectively, intelligent voltage table and Intelligent current table are connected respectively to control gear A again.Time controller B is provided with between the input coil and intelligent voltage table of test interface.Control gear A is also connected in the actuating mechanism of control contactor, makes control contactor close or open.Load box has the actuating mechanism that can control its measured power, and the actuating mechanism of load box is connected with load control mechanism C.
Intelligent voltage table and Intelligent current table have detection upper lower limit value and arrange, and voltage, the current signal of difference receiver voltage sensor or current sensor, if tested voltage, electric current exceed setting value, then send to control gear A the signal that transfinites, control gear A disconnects control contactor after receiving the signal that transfinites.Time controller B, after intelligent voltage table powers on, starts timing, and starts the input coil of test interface according to setting-up time fixed time interval.A and Burden box if intact this of the relay in test interface can switch on power, current sensor and Intelligent current table also detect current signal.Wherein, Intelligent current table has Monitoring lower-cut is worth delay protection, only has when tested electric current is being greater than a certain duration section, and always lower than preset lower limit, just can send to time controller B the signal that transfinites.Be greater than a certain duration section and refer to the fixed time interval being greater than time controller B, Intelligent current table can be made like this to judge that lower current limit transfinites, and ignore the time of relay disconnection.
Time controller B is connected on the control end coil of test interface repeat circuit, during test, measured relay is connected to test interface, voltage sensor is made by reset control contactor, intelligent voltage table and time controller B power on, time controller B starts timing and interval starts measured relay, Burden box when measured relay starts, current sensor and Intelligent current table are started working, until the voltage that measured relay causes, current fluctuation, by intelligent voltage table, Intelligent current table detects to transfinite, control gear A disconnects control contactor, power on signal lost by intelligent voltage table, time controller B stops timing and disconnects test interface, terminate test.The test life-span of measured relay is the fixed time interval of timing divided by setting of time controller B in test process.
Load control mechanism C by the operating power of the actuating mechanism control load case of load box, to adapt to the relay contact analog control system of different capacity.
Electric current and voltage surge detection device is in life of product process of the test; detect the fluctuation size of voltage and current constantly; if supply voltage is beyond arranging scope; intelligent voltage table is output signal just; remove drived control contactor; make it cut off the electricity supply; if load current is beyond arranging scope; Intelligent current table is output signal just; remove drived control contactor; make it cut off the electricity supply, reach electric current and voltage fluctuation and exceed setting range and play automatic cut-off power function, also can play equipment and by the protective effect of trial product.
The key technical indexes of intelligent voltage table and Intelligent current table:
Range: voltage table is 500V, reometer is for looking shunt range;
Resolving power: intelligent voltage table is 0.01V, Intelligent current table is 0.001A;
Allow overload: 120% × range;
Measuring accuracy: 0.5 grade;
Switching rate: about 8000 times/second;
Measurement data is arranged: have upper and lower limit and arrange;
Voltage table has voltage multiplying power and arranges, and reometer has current ratio and arranges;
Alarm relay exports: carry out out-of-limit judgement to test data, and output contact switching signal, conveniently carry out extendible control.
As Fig. 1, power supply is that whole life of product tests total power supply, control contactor is the input of Control experiment power supply, voltage sensor gathers the magnitude of voltage in life, current sensor is current value when gathering product contacting, test products (only having marked coil and a contact, road in figure) by trial product, Burden box is the current loading provided to product contact, load control mechanism is the size of control load case output current, temporal organization is control gear switching time of durability test, control gear is the signal output that reception intelligent voltage table and the collection of Intelligent current table go beyond the limit of setting, modular power source is for equipment working power, intelligent voltage table gathers display voltage, Intelligent current table is current value when gathering the test of display life of product.Relay and contactor durability test, be that product tape carries on-off-connection and ceaselessly works, meet the work times that product technology requires always.
Claims (5)
1. an electric current and voltage surge detection device, it is characterized in that: it comprises power module, control contactor, voltage sensor, current sensor, intelligent voltage table, Intelligent current table, test interface, Burden box and control gear, described power module comprises to be provided the power supply A of power supply for load and provides the power supply B of internal electric source for pick-up unit, and described control gear comprises the control gear A, time controller B and the load control mechanism C that control described control contactor;
Described power supply A is that Burden box is powered, and power supply A is connected with the control contactor as two-way gauge tap, is parallel with voltage sensor after control contactor, is connected with test interface and current sensor between voltage sensor and Burden box; Described voltage sensor, current sensor connect intelligent voltage table and Intelligent current table respectively, and intelligent voltage table and Intelligent current table are connected respectively to control gear A again;
Described time controller B is connecting test interface and intelligent voltage table respectively, and after intelligent voltage table detects that Burden box powers on, time controller B fixed time interval starts the input coil of test interface;
Power supply B connects load control mechanism C, and load control mechanism C can test with different capacity by control overhead case;
Intelligent voltage table and Intelligent current table can detect transfinite voltage or electric current, and the signal that will transfinite is sent to control gear A, and control gear A disconnects control contactor after receiving the signal that transfinites, and terminate test.
2. electric current and voltage surge detection device according to claim 1, it is characterized in that: described intelligent voltage table and Intelligent current table have voltage, current detecting bound is arranged, if tested voltage or electric current exceed restriction, then the signal that will transfinite is sent to control gear A.
3. electric current and voltage surge detection device according to claim 1, is characterized in that: described time controller B is connected on the control end coil of test interface repeat circuit;
During test, first measured relay is connected to test interface, by reset control contactor, voltage sensor is powered on, after intelligent voltage table detects power on signal, time controller B starts timing, and starts the input coil of test interface according to setting-up time fixed time interval; After control contactor disconnects, power on signal lost by intelligent voltage table, and time controller B stops timing and disconnects test interface.
4. electric current and voltage surge detection device according to claim 1; it is characterized in that: described Intelligent current table has Monitoring lower-cut delay protection; only have when tested electric current on the fixed time interval being greater than time controller B always lower than preset lower limit, just can send the signal that transfinites.
5. electric current and voltage surge detection device according to claim 3, is characterized in that: the test life-span of measured relay is the fixed time interval of timing divided by setting of time controller B in test process.
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| CN201510514025.8A CN105067998A (en) | 2015-08-20 | 2015-08-20 | Voltage and current fluctuation detector |
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| CN201510514025.8A CN105067998A (en) | 2015-08-20 | 2015-08-20 | Voltage and current fluctuation detector |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108614147A (en) * | 2018-05-07 | 2018-10-02 | 威胜集团有限公司 | Voltage fluctuation detection method and its Source of Gateway Meter |
| CN109839529A (en) * | 2017-11-27 | 2019-06-04 | 无锡华润矽科微电子有限公司 | The test device and test method of chip operating voltage |
| CN109932643A (en) * | 2018-12-27 | 2019-06-25 | 杭州西力智能科技股份有限公司 | On-load switch current over-zero disjunction arc-extinguishing system and method built in a kind of single-phase electric energy meter |
| CN112213675A (en) * | 2019-07-10 | 2021-01-12 | 郑州宇通集团有限公司 | Current sensor fault judgment method and device |
| CN114729817A (en) * | 2019-12-11 | 2022-07-08 | 宝马股份公司 | Testing apparatus and method for testing the number of startup cycles of testing devices for motor vehicles |
| EP4492424A3 (en) * | 2023-07-10 | 2025-03-26 | Hamilton Sundstrand Corporation | Electrical load control monitoring units (lcmus) |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109839529A (en) * | 2017-11-27 | 2019-06-04 | 无锡华润矽科微电子有限公司 | The test device and test method of chip operating voltage |
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| CN112213675A (en) * | 2019-07-10 | 2021-01-12 | 郑州宇通集团有限公司 | Current sensor fault judgment method and device |
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| EP4492424A3 (en) * | 2023-07-10 | 2025-03-26 | Hamilton Sundstrand Corporation | Electrical load control monitoring units (lcmus) |
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