CN201839066U - Automatic alternating current supply switchover device in direct current system based on controlling of single chip computer - Google Patents
Automatic alternating current supply switchover device in direct current system based on controlling of single chip computer Download PDFInfo
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- CN201839066U CN201839066U CN2010202592237U CN201020259223U CN201839066U CN 201839066 U CN201839066 U CN 201839066U CN 2010202592237 U CN2010202592237 U CN 2010202592237U CN 201020259223 U CN201020259223 U CN 201020259223U CN 201839066 U CN201839066 U CN 201839066U
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- alternating current
- single chip
- chip computer
- direct current
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Abstract
The utility model relates to an automatic alternating current supply switchover device in a direct current system based on controlling of a single chip computer, comprising a single chip computer core processing part, a collection part, a control part and an alternating current contactor, wherein an alternating current voltage and current signal is converted from a simulating quantity into a digital quantity by the collection part, transmitted to the single chip computer core processing part and then calculated by the single chip computer so as to transmit the control signal to the control part, and the alternating current contactor is controlled by the control part so as to realize automatic switchover of alternating current. The device can collect two paths of alternating current voltage and current in real time, and judge whether the phenomena such as lacunae, overvoltage, overcurrent, power failure and the like exist, and if exists, the alternating current power circuit is timely switched over. With the utility model, the problem that the running direct current system can not be automatically switched over to a standby power supply when the alternating current supply is abnormal is solved. The device has the characteristics of good isolating effect, high protection property, safety and reliability in running and the like.
Description
Technical field
The utility model relates to a kind of automatic control equipment, relates to the interchange uninterrupted power supply switching device shifter of DC power supply in a kind of electric power system specifically.
Background technology
In electric power system, we are provided by DC power system required DC power supply, and DC power system generally adopts the two-way AC-powered, and one the tunnel is the main circuit power supply circuit, and another road is the back-up circuit power supply circuits.Guaranteeing provides continual alternating current for DC power system, electric power system will be implemented under the situation of major loop alternating current dead electricity or abnormal electrical power supply, electric power system can be powered to back-up circuit from the main circuit power supply switching automatically, and the major loop alternating current recover under the normal situation electric power system can be automatically from the back-up circuit service restoration to main circuit power supply.And the utility model based on Alternating Current Power Supply automatic switching control equipment in the monolithic processor controlled direct current system just for realizing what this function designed.
Summary of the invention
The purpose of this utility model is to solve to exchange the uninterrupted power supply problem in the DC power system, and direct current system generally adopts the two-way alternating current to power jointly, exactly in order to guarantee the continuity of Alternating Current Power Supply.According to the DC control system of routine is the situation that exchanges dead electricity or abnormal electrical power supply when a tunnel, often needs manually mode to switch to another road alternating current and powers, and its switching efficiency is low, and is dangerous big.
The utility model is exactly will address the above problem and realize the automatic switchover of alternating current in the direct current system and the device invented, for achieving the above object, the technical solution of the utility model is as follows: a kind of it comprises monolithic microcomputer kernel processing section, collecting part, control section, A.C. contactor based on Alternating Current Power Supply automatic switching control equipment in the monolithic processor controlled direct current system, it is characterized in that the monolithic microcomputer kernel processing section is connected with the control section signal of telecommunication with collecting part, control section is connected with the A.C. contactor signal of telecommunication.
This scheme is to pass through collecting part, the alternating voltage current signal is changed into digital quantity from analog quantity, pass to the monolithic microcomputer kernel processing section, again by the single-chip microcomputer computing, the light-coupled isolation of control signal by control section driven relay control A.C. contactor, realize exchanging and automatically switch.This device mainly is to adopt single-chip microcomputer to handle and control, the single-chip microcomputer that use the monolithic microcomputer kernel processing section is the AT89s52 type, can gather two-way alternating current voltage electric current in real time, phenomenons such as lacuna, overvoltage, overcurrent, dead electricity have been judged whether, if the above-mentioned phenomenon timely Alternating Current Power Supply of switched system then.The utility model has solved the problem that operating direct current system Alternating Current Power Supply can not automatically switch to stand-by power supply unusually.It is good that this device has an isolation effect, protective value height, characteristics such as safe and reliable to operation.
Description of drawings
Fig. 1 is a monolithic microcomputer kernel processing section circuit diagram
Fig. 2 is the collecting part circuit diagram
Fig. 3 is the control section circuit diagram
Fig. 4 is a system principle diagram, wherein 1, the monolithic microcomputer kernel processing section, and 2, the signals collecting part, 3, control section, 4, A.C. contactor.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
1, monolithic microcomputer kernel processing section:
Monolithic microcomputer kernel processing section principle as shown in Figure 1, be to be core by single chip computer AT 89s52, gather I respectively by gathering inlet, three electric currents behind three voltages of II road alternating current and the A.C. contactor, the I that collects, II road three alternating current voltage required voltages value relatively, judge whether that voltage transfinites, whether lacuna is arranged, P0 mouth output high-low level by the single-chip microcomputer correspondence, R2, R3 is a pull-up resistor, effectively guaranteed P0 mouth output high-low level, signal has been strengthened, sent control signal through light-coupled isolation again through driver 7407 in the same way, make the adhesive and the disconnection of corresponding relays closure or disconnection and control A.C. contactor, realize controlling automatically the purpose of two-way alternating current switching.
2, collecting part
Collecting part such as Fig. 2 are by operational amplifier U1, U2, and voltage-frequency conversion chip U3 forms.At first 3 alternating current voltages of alternating current 0～380V are exported the direct voltage of 0～3VDC via voltage transformer, through operational amplifier analog quantity is done processing and amplifying, by voltage-frequency conversion chip AD654 the analog quantity that collects 0～3VDC is converted to frequency again and gives single-chip microcomputer, carry out the internal processes calculation process.
3, control section
Automatic control section principle such as Fig. 3; be the I that to collect; three alternating voltages in II road respectively with set range of voltage values and compare; if have voltage to transfinite or the situation of lacuna, then control single chip computer P0 mouth is exported corresponding high-low level, by the validity of light-coupled isolation and guard signal; drive the relay of back level; contact by relay deciliter, the adhesive of controlling the two-way A.C. contactor with separate, make it the interchange automatic switching scheme that reaches desirable.
Be divided into manually and automatic two kinds of control modes for guaranteeing reliability, exchange to switch.Normal condition lower slider switch should push automatic transmission, starts control automatically.In the time of automatic Control Failure, can push the manual manual control of enabling to slide switch, force to switch I by another slide switch then, II road alternating current, this mode can increase reliability of products.
Claims (3)
- One kind based on Alternating Current Power Supply automatic switching control equipment in the monolithic processor controlled direct current system it comprises monolithic microcomputer kernel processing section, collecting part, control section, A.C. contactor, it is characterized in that the monolithic microcomputer kernel processing section is connected with the control section signal of telecommunication with collecting part, control section is connected with the A.C. contactor signal of telecommunication.
- 2. according to claim 1 based on Alternating Current Power Supply automatic switching control equipment in the monolithic processor controlled direct current system, it is characterized in that the single-chip microcomputer that use the monolithic microcomputer kernel processing section is the AT89s52 type.
- 3. according to claim 1 based on Alternating Current Power Supply automatic switching control equipment in the monolithic processor controlled direct current system, it is characterized in that control signal is to control A.C. contactor by the light-coupled isolation driving relay of control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202592237U CN201839066U (en) | 2010-07-15 | 2010-07-15 | Automatic alternating current supply switchover device in direct current system based on controlling of single chip computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202592237U CN201839066U (en) | 2010-07-15 | 2010-07-15 | Automatic alternating current supply switchover device in direct current system based on controlling of single chip computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201839066U true CN201839066U (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202592237U Expired - Fee Related CN201839066U (en) | 2010-07-15 | 2010-07-15 | Automatic alternating current supply switchover device in direct current system based on controlling of single chip computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201839066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797482A (en) * | 2017-09-08 | 2018-03-13 | 山东锦华电力设备有限公司 | Controlling of sampling sequential system and method based on ARM FPGA |
-
2010
- 2010-07-15 CN CN2010202592237U patent/CN201839066U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797482A (en) * | 2017-09-08 | 2018-03-13 | 山东锦华电力设备有限公司 | Controlling of sampling sequential system and method based on ARM FPGA |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20170715 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |