CN103065890A - Shock resisting under-voltage release device and method - Google Patents
Shock resisting under-voltage release device and method Download PDFInfo
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- CN103065890A CN103065890A CN2012105527587A CN201210552758A CN103065890A CN 103065890 A CN103065890 A CN 103065890A CN 2012105527587 A CN2012105527587 A CN 2012105527587A CN 201210552758 A CN201210552758 A CN 201210552758A CN 103065890 A CN103065890 A CN 103065890A
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Abstract
The invention provides a shock resisting under-voltage release device. The shock resisting under-voltage release device is mainly composed of an accelerated speed detecting circuit, a voltage sample collecting circuit, a central processing unit (CPU), a pulse-width modulation (PWM) circuit, an electromagnet and a working power supply circuit. The CPU obtains power supply voltages through the voltage collecting circuit and an accelerated speed through the accelerated speed detecting circuit and controls attachment of the electromagnet or keeps the electromagnet in the state of attachment through PWM currents of different impulse widths generated by the PWM circuit. The invention further provides a shock resisting method of the under-voltage release device. The under-voltage release device has the advantages of being small in size, simple in structure, little in generated heat, impact and vibration resistant and the like. With the shock resisting method of the under-voltage release device, the under-voltage release device can effectively resist impact and vibration on a frame-type low-voltage breaker of a boat.
Description
Technical field
The present invention relates to a kind of shock resistance under-voltage release and adopt the shock resistance method of this under-voltage release.
Background technology
The frame-type low-voltage circuit breaker that uses on the ship has following regulation: should be able to guarantee breaker closing when the supply voltage of low-voltage circuit breaker is equal to or greater than 85%, when the supply voltage of low-voltage circuit breaker drops in 70%～35% scope of rated voltage, under-voltage release should move.During the electromagnetic actuation of under-voltage release, for the elastic force that overcomes spring needs larger electric current, and after having finished adhesive, only need less maintenance electric current just can keep electromagnet and keep the attracted position, if also pass into higher electric current this moment, the electromagnet coil damage of can generating heat so just needs current limliting.Simultaneously; when ship navigates by water across the sea; often can be subject to stronger impact shock; under the high acceleration effect of impact shock, less maintenance electric current will be not enough to keep electromagnetic actuation, and the electromagnet iron core will bounce; and iron core leave the attracted position after the electromagnetism confining force reduce rapidly; be not enough to iron core is retracted the holding position, cause the device for under-voltage releasing equipment malfunction, make the frame circuit breaker tripping operation cause serious consequence.
Summary of the invention
The purpose of this invention is to provide a kind of can shock resistance and so that the frame-type low-voltage circuit breaker satisfies the shock resistance method that ship uses the under-voltage release of regulation and adopts this under-voltage release.
In order to achieve the above object, a technical scheme of the present invention has provided a kind of shock resistance under-voltage release, it is characterized in that, comprising:
The acceleration detection circuit is subject to the acceleration that produces behind the impact shock for detection of the frame-type low-voltage circuit breaker of ship;
Voltage sampling circuit is for detection of the supply voltage of frame-type low-voltage circuit breaker;
The CPU processing unit, pass through the PWM electric current that the PWM pulse-width modulation circuit produces distinct pulse widths according to the supply voltage that obtains by voltage sampling circuit and by the acceleration that the acceleration detection circuit obtains, by PWM Current Control electromagnetic actuation or so that electromagnet keeps attracting state;
Working power circuit is converted to operating voltage for the supply voltage with the frame-type low-voltage circuit breaker and offers respectively acceleration detection circuit, CPU processing unit and PWM pulse-width modulation circuit.
The present invention also provides a kind of shock resistance method of above-mentioned shock resistance under-voltage release, it is characterized in that step is:
If the supply voltage that step 1 CPU processing unit detects the frame-type low-voltage circuit breaker by voltage sampling circuit be not less than rated voltage 85% the time, produce full pulsewidth PWM electric current by the CPU processing unit by the PWM pulse-width modulation circuit, electromagnet adhesive under the large electromagnetic force that large electric current produces;
Step 2, after electromagnet is finished adhesive, the CPU processing unit produces narrow pulsewidth PWM electric current by the PWM pulse-width modulation circuit, electromagnet is kept attracting state under the electromagnetic force that little electric current produces;
Step 3, electromagnet is under attracting state, if the frame-type low-voltage circuit breaker of ship is subject to impact shock, by the acceleration of CPU processing unit by acceleration detection electric circuit inspection impact shock, if this acceleration is during greater than predefined threshold value, the CPU processing unit produces full pulsewidth PWM electric current by the PWM pulse-width modulation circuit, also can be returned to the attracted position under the effect under the large electromagnetic force that large electric current produces even spring occurs the iron core of electromagnet, uniform acceleration returns to when being not more than threshold value, and the CPU processing unit produces narrow pulsewidth PWM electric current by the PWM pulse-width modulation circuit again;
When if the supply voltage that the CPU processing unit detects the frame-type low-voltage circuit breaker by voltage sampling circuit drops in 70%～35% scope of rated voltage, the CPU processing unit through one section predefined delay time after the cut-off of control PWM pulse-width modulation circuit, the electromagnet dead electricity discharges under spring action, causes the dropout of frame-type low-voltage circuit breaker under voltage.
A kind of shock resistance under-voltage release that the present invention proposes, have the advantages such as volume is little, circuit is simple, caloric value is little, anti shock and vibration, and method provided by the invention is so that under-voltage release can effectively be resisted the impact shock that the frame-type low-voltage circuit breaker of ship is subject to.
Description of drawings
Fig. 1 is the schematic diagram of a kind of shock resistance under-voltage release provided by the invention.
Embodiment
For the present invention is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
As shown in Figure 1, a kind of shock resistance under-voltage release provided by the invention mainly is comprised of acceleration detection circuit, voltage sampling circuit, CPU processing unit, PWM pulse-width modulation circuit, electromagnet and working power circuit, wherein:
The acceleration detection circuit is subject to the acceleration that produces behind the impact shock for detection of the frame-type low-voltage circuit breaker of ship;
Voltage sampling circuit is for detection of the supply voltage of frame-type low-voltage circuit breaker;
The CPU processing unit, pass through the PWM electric current that the PWM pulse-width modulation circuit produces distinct pulse widths according to the supply voltage that obtains by voltage sampling circuit and by the acceleration that the acceleration detection circuit obtains, by PWM Current Control electromagnetic actuation or so that electromagnet keeps attracting state;
Working power circuit is converted to operating voltage for the supply voltage with the frame-type low-voltage circuit breaker and offers respectively acceleration detection circuit, CPU processing unit and PWM pulse-width modulation circuit.
The present invention also provides a kind of shock resistance method of above-mentioned shock resistance under-voltage release, the steps include:
If the supply voltage that step 1 CPU processing unit detects the frame-type low-voltage circuit breaker by voltage sampling circuit be not less than rated voltage 85% the time, produce full pulsewidth PWM electric current by the CPU processing unit by the PWM pulse-width modulation circuit, electromagnet adhesive under the large electromagnetic force that large electric current produces;
Step 2, after electromagnet is finished adhesive, the CPU processing unit produces narrow pulsewidth PWM electric current by the PWM pulse-width modulation circuit, electromagnet is kept attracting state under the electromagnetic force that little electric current produces;
Step 3, electromagnet is under attracting state, if ship frame-type low-voltage circuit breaker is subject to impact shock, by the acceleration of CPU processing unit by acceleration detection electric circuit inspection impact shock, if this acceleration is during greater than predefined threshold value, the CPU processing unit produces full pulsewidth PWM electric current by the PWM pulse-width modulation circuit, also can be returned to the attracted position under the effect under the large electromagnetic force that large electric current produces even spring occurs the iron core of electromagnet, uniform acceleration returns to when being not more than threshold value, and the CPU processing unit produces narrow pulsewidth PWM electric current by the PWM pulse-width modulation circuit again;
When if the supply voltage that the CPU processing unit detects the frame-type low-voltage circuit breaker by voltage sampling circuit drops in 70%～35% scope of rated voltage, the CPU processing unit through one section predefined delay time after the cut-off of control PWM pulse-width modulation circuit, the electromagnet dead electricity discharges under spring action, causes the dropout of frame-type low-voltage circuit breaker under voltage.
Claims (2)
1. a shock resistance under-voltage release is characterized in that, comprising:
The acceleration detection circuit is subject to the acceleration that produces behind the impact shock for detection of the frame-type low-voltage circuit breaker of ship;
Voltage sampling circuit is for detection of the supply voltage of frame-type low-voltage circuit breaker;
The CPU processing unit, pass through the PWM electric current that the PWM pulse-width modulation circuit produces distinct pulse widths according to the supply voltage that obtains by voltage sampling circuit and by the acceleration that the acceleration detection circuit obtains, by PWM Current Control electromagnetic actuation or so that electromagnet keeps attracting state;
Working power circuit is converted to operating voltage for the supply voltage with the frame-type low-voltage circuit breaker and offers respectively acceleration detection circuit, CPU processing unit and PWM pulse-width modulation circuit.
2. the shock resistance method of a shock resistance under-voltage release as claimed in claim 1 is characterized in that, step is:
If the supply voltage that step 1 CPU processing unit detects the frame-type low-voltage circuit breaker by voltage sampling circuit be not less than rated voltage 85% the time, produce full pulsewidth PWM electric current by the CPU processing unit by the PWM pulse-width modulation circuit, electromagnet adhesive under the large electromagnetic force that large electric current produces;
Step 2, after electromagnet is finished adhesive, the CPU processing unit produces narrow pulsewidth PWM electric current by the PWM pulse-width modulation circuit, electromagnet is kept attracting state under the electromagnetic force that little electric current produces;
Step 3, electromagnet is under attracting state, if the frame-type low-voltage circuit breaker of ship is subject to impact shock, by the acceleration of CPU processing unit by the vibration of acceleration detection electric circuit inspection, if this acceleration is during greater than predefined threshold value, the CPU processing unit produces full pulsewidth PWM electric current by the PWM pulse-width modulation circuit, also can be returned to the attracted position under the effect under the large electromagnetic force that large electric current produces even spring occurs the iron core of electromagnet, uniform acceleration returns to when being not more than threshold value, and the CPU processing unit produces narrow pulsewidth PWM electric current by the PWM pulse-width modulation circuit again;
When if the supply voltage that the CPU processing unit detects the frame-type low-voltage circuit breaker by voltage sampling circuit drops in 70%～35% scope of rated voltage, the CPU processing unit through one section predefined delay time after the cut-off of control PWM pulse-width modulation circuit, the electromagnet dead electricity discharges under spring action, causes the dropout of frame-type low-voltage circuit breaker under voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552758.7A CN103065890B (en) | 2012-12-18 | 2012-12-18 | Shock resisting under-voltage release device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552758.7A CN103065890B (en) | 2012-12-18 | 2012-12-18 | Shock resisting under-voltage release device and method |
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| Publication Number | Publication Date |
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| CN103065890A true CN103065890A (en) | 2013-04-24 |
| CN103065890B CN103065890B (en) | 2015-03-04 |
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| CN201210552758.7A Active CN103065890B (en) | 2012-12-18 | 2012-12-18 | Shock resisting under-voltage release device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356243A (en) * | 2016-10-10 | 2017-01-25 | 嘉兴威泰电源科技有限公司 | Constant-power vacuum circuit breaker on-off control module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469408A (en) * | 2002-09-06 | 2004-01-21 | 正泰集团公司 | Controller for electromagnetic system of universal contactor |
| CN202395419U (en) * | 2011-12-13 | 2012-08-22 | 上海电科电器科技有限公司 | Communication-capable undervoltage tripping device |
| JP2012199143A (en) * | 2011-03-22 | 2012-10-18 | Panasonic Corp | Electromagnetic switching device |
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2012
- 2012-12-18 CN CN201210552758.7A patent/CN103065890B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1469408A (en) * | 2002-09-06 | 2004-01-21 | 正泰集团公司 | Controller for electromagnetic system of universal contactor |
| JP2012199143A (en) * | 2011-03-22 | 2012-10-18 | Panasonic Corp | Electromagnetic switching device |
| CN202395419U (en) * | 2011-12-13 | 2012-08-22 | 上海电科电器科技有限公司 | Communication-capable undervoltage tripping device |
Non-Patent Citations (1)
| Title |
|---|
| 丁家松: "舰船用断路器抗冲击欠压脱扣器的设计", 《噪声与振动控制》, no. 1, 28 February 2002 (2002-02-28), pages 33 - 36 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356243A (en) * | 2016-10-10 | 2017-01-25 | 嘉兴威泰电源科技有限公司 | Constant-power vacuum circuit breaker on-off control module |
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| CN103065890B (en) | 2015-03-04 |
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