CN207301694U - A kind of combination switch switching control system - Google Patents
A kind of combination switch switching control system Download PDFInfo
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- CN207301694U CN207301694U CN201720941120.0U CN201720941120U CN207301694U CN 207301694 U CN207301694 U CN 207301694U CN 201720941120 U CN201720941120 U CN 201720941120U CN 207301694 U CN207301694 U CN 207301694U
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- combination switch
- microcontroller
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Abstract
The utility model discloses a kind of combination switch switching control system in combination switch field,Including the zero passage detection unit being connected on microcontroller,Isolated location,Outage detection unit and switching driving unit,Outage detection unit includes rectifier cell U4,The output terminal of rectifier element U4 is connected with metal-oxide-semiconductor N15,The emitter ground connection of metal-oxide-semiconductor N15,The collector of metal-oxide-semiconductor N15 divides two-way,All the way power Vcc is connect through resistance R60,Another way is sequentially connected in series resistance R61,It is grounded after capacitance C23,Electrode points between resistance R61 and capacitance C23 divide two-way,Microcontroller outage detection pin is connect all the way,Another way connects switching driving unit through electrolytic capacitor C24,After the utility model power-off excision magnetic latching relay is carried out not against microcontroller,Action response is rapid,Improve power grid and compensate the security of equipment,Circuit function relies primarily on capacity cell to realize,It is simple and reliable,Available in power grid.
Description
Technical field
A kind of combination switch is the utility model is related to, more particularly to a kind of combination switch fling-cut system.
Background technology
Combination switch is the device for controlling power capacitor switching.Will be silicon-controlled used in parallel with relay tip,
Realize that voltage zero-cross input is cut off with current over-zero by silicon-controlled, by mechanical contacts by continuous current, so avoiding can
The conduction loss problem of silicon is controlled, shoving when it also avoid power capacitor input.Due to not only having used power electronic devices but also
Mechanical contacts are used, because of referred to herein as combination switch.
The switching of combination switch is controlled by microcontroller, microcontroller be responsible for detecting exterior switching signal, zero cross signal and
Be loaded with without etc. information, judge whether that sending switching to silicon-controlled and magnetic latching relay instructs by testing result.It is compound to open
After shut-off electricity, magnetic latching relay necessarily be in off-state, if cannot effectively disconnect, when powering on next time, and electric brake meeting
There is arcing, this arcing not only can cause impulsive disturbance to power grid, other equipment operation be influenced, after also damaging combination switch
The electric power compensation capacitance of side.At present, the outage detection of combination switch after a loss of power has three kinds of methods substantially, first, utilizing power supply pipe
Chip is managed, after power cut-off, chip sends a pulse signal and send to singlechip interruption, and microcontroller performs excision order；The
Second, utilizing comparator, after power cut-off, the voltage of a port of comparator is less than the voltage of setting value, comparator output
Invert, low level switchs to high level, and microcontroller performs excision order after detecting high level；3rd is to utilize triode
Switching characteristic realizes the identification of off-position, and microcontroller detection transistor collector level, high level is off-position.This three
Kind method is all the excision work after being powered off by microcontroller, if microcontroller is carrying out other instructions or occurs
Failure, then can not possibly perform excision order when powering off.
Utility model content
The purpose of this utility model is to provide a kind of combination switch switching control system, it is ensured that magnetic latching relay is in system
Effectively cut off after power-off, improve on-load switch reliability of operation and security.
What the purpose of this utility model was realized in：A kind of combination switch switching control system, including it is connected to monolithic
Zero passage detection unit, isolated location, outage detection unit and switching driving unit, the outage detection unit on machine include
The output terminal of rectifier cell U4, the rectifier element U4 are connected with metal-oxide-semiconductor N15, the emitter ground connection of metal-oxide-semiconductor N15, metal-oxide-semiconductor N15
Collector divide two-way, connect power Vcc through resistance R60 all the way, another way is grounded after being sequentially connected in series resistance R61, capacitance C23, electricity
Electrode points between resistance R61 and capacitance C23 divide two-way, connect microcontroller outage detection pin all the way, another way is through electrolytic capacitor C24
Connect switching driving unit.
Further as the utility model limits, and the output terminal of the rectifier element U4 is also through zener diode D2 connections
On regulator circuit.
Further as the utility model limits, and the electrode points between the resistance R60 and power Vcc are through electrolytic capacitor
C2 is grounded.
Compared with prior art, the beneficial effects of the utility model are：Not against microcontroller after the utility model power-off
Excision magnetic latching relay is carried out, action response is rapid, improves power grid and compensates the security of equipment, circuit function relies primarily on
Capacity cell is realized, simple and reliable.The utility model can be used in power grid.
Brief description of the drawings
Fig. 1 the utility model control principle block diagrams.
Embodiment
A kind of combination switch switching control system as shown in Figure 1, including be connected on microcontroller zero passage detection unit,
Isolated location, outage detection unit and switching driving unit, outage detection unit include rectifier cell U4, rectifier element U4's
Output terminal is connected with metal-oxide-semiconductor N15, and the emitter ground connection of metal-oxide-semiconductor N15, the collector of metal-oxide-semiconductor N15 divides two-way, all the way through resistance
R60 connects power Vcc, and another way is grounded after being sequentially connected in series resistance R61, capacitance C23, the electrode points between resistance R61 and capacitance C23
Divide two-way, connect microcontroller outage detection pin all the way, another way meets switching driving unit, rectifier element U4 through electrolytic capacitor C24
Output terminal be also connected to through zener diode D2 on regulator circuit, the electrode points between resistance R60 and power Vcc through electrolysis electricity
Hold C2 ground connection.
During utility model works, U4 is rectifier cell, and D2 selects 1N4007, N15 to select 9013；During normal work, U4
3 feet be high level, N15 base stages have bias voltage, N15 conductings, the current collection extremely low level of N15；When power is off, 3 feet of U4
For low level, N15 base stages do not have a bias voltage, N15 cut-offs, the current collection extremely high level of N15, C24 just extremely high level, C24
Anode moment is high level, is then gradually reduced, and forms a pulse signal, produces the width of pulse significant level and can pass through
The size for changing C24 capacity adjusts, this pulse send the excision for switching driving unit, completing magnetic latching relay；C24 is just
The high level of pole gives the middle fracture of microcontroller at the same time, after microcontroller detects off-position, stops performing other instructions, and give
Switching driving sends magnetic latching relay excision order.Such an approach achieves excision of the simple two-way signal to magnetic latching relay,
Ensure the validity of power-off excision, the effect of R61, C23 are filtering interference signals, prevent from malfunctioning.
The utility model is not limited to above-described embodiment, on the basis of technical solution disclosed in the utility model, this
The technical staff in field is according to disclosed technology contents, it is not necessary to which performing creative labour can be special to some of which technology
Sign makes some and replaces and deform, these are replaced and deformation is within the protection scope of the present utility model.
Claims (3)
1. a kind of combination switch switching control system, including be connected on microcontroller zero passage detection unit, isolated location, power-off
Detection unit and switching driving unit, it is characterised in that the outage detection unit includes rectifier cell U4, and the rectification is former
The output terminal of part U4 is connected with metal-oxide-semiconductor N15, the emitter ground connection of metal-oxide-semiconductor N15, and the collector of metal-oxide-semiconductor N15 divides two-way, passes through all the way
Resistance R60 connects power Vcc, and another way is grounded after being sequentially connected in series resistance R61, capacitance C23, the electricity between resistance R61 and capacitance C23
Limit divides two-way, connects microcontroller outage detection pin all the way, and another way connects switching driving unit through electrolytic capacitor C24.
2. a kind of combination switch switching control system according to claim 1, it is characterised in that the rectifier element U4's
Output terminal is also connected on regulator circuit through zener diode D2.
A kind of 3. combination switch switching control system according to claim 1 or 2, it is characterised in that the resistance R60 with
Electrode points between power Vcc are grounded through electrolytic capacitor C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720941120.0U CN207301694U (en) | 2017-07-31 | 2017-07-31 | A kind of combination switch switching control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720941120.0U CN207301694U (en) | 2017-07-31 | 2017-07-31 | A kind of combination switch switching control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207301694U true CN207301694U (en) | 2018-05-01 |
Family
ID=62447767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720941120.0U Active CN207301694U (en) | 2017-07-31 | 2017-07-31 | A kind of combination switch switching control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207301694U (en) |
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2017
- 2017-07-31 CN CN201720941120.0U patent/CN207301694U/en active Active
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