CN106125808A - A kind of feedback circuit of Control load condition - Google Patents
A kind of feedback circuit of Control load condition Download PDFInfo
- Publication number
- CN106125808A CN106125808A CN201610777892.5A CN201610777892A CN106125808A CN 106125808 A CN106125808 A CN 106125808A CN 201610777892 A CN201610777892 A CN 201610777892A CN 106125808 A CN106125808 A CN 106125808A
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- China
- Prior art keywords
- circuit
- silicon diode
- connection line
- load
- silicon
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The feedback circuit that the invention discloses a kind of Control load condition uses three silicon diodes, a polarity free capacitor, two resistance and the circuit of a voltage photoelectrical coupler composition.Silicon diode D1 and silicon diode D2 series connection, silicon diode D1 one end connection line 1, silicon diode D2 one end connection line 2, silicon diode D3 reverse two ends connection line 1 and circuit 2, electric capacity C1 two ends connection line 1 and circuit 2, series resistance R1 on circuit 1, circuit 1 and circuit 2 connect voltage photoelectrical coupler U1 input, voltage photoelectrical coupler U1 outfan outlet line 3 and circuit 4, circuit 4 connects resistance R2.Load operating condition is monitored by simple realization, real control object can monitor also do not have obvious limitation, have universal versatility.
Description
Technical field
The invention belongs to electrical equipment control field, be specifically related to a kind of Control load condition
Feedback circuit.
Background technology
Traditional control method, after Control output, the state of control object (i.e. load) is usually unknown；Negative
Carry and the most working properly (refer to work and off working state, then belong to the dimension of load itself as more complicated load faulty
Protect scope), generally use human resources to monitor.If same device can be used to enter the duty of the object controlled
Row monitors, will can play the more multiaction of control system, more human resources frees, and is engaged in the management work of high level.
At present load condition is monitored there is multiple method.
1, control signal feedback transmitter
Control signal feedback transmitter is to monitor relay control signal, it is ensured that control the reliability of output, uniqueness,
Stability and reliability that system controls can be improved.It is generally used for requiring to control occasion accurate, reliable.
But due to this method monitor to as if the control signal (duty of the coil of relay) of relay, and
Non-real load, it can not the real duty of reflected load.
2, communications feedback method
Communications feedback method is to utilize the communication function of intelligent load, monitors load condition, can be to the work shape of load
The supervision that state is detailed.Such as: load is a ultrasonic distance detector, and this detector has RS485 communication interface, by this
Interfaced detector can be to the various duties of MCU transmission detector, it is also possible to transmit various configuration parameters to MCU；MCU can
With the information received by these, the various information of display detector and alarm.
This mode requires that load must be the intelligent load possessing communication function, and limitation is the strongest.
3, transformer feedback transmitter (being called for short transformer method).
Transformer feedback transmitter uses transformer to monitor loaded work piece electric current, and the advantage of this method is to accomplish
Accurately monitor.In conjunction with concrete load, load condition can be carried out early warning.Such as, if load is alternating current generator, can be right
The running status of alternating current generator monitors in detail, and such as, the operating current during load of alternating current generator normal driving mechanical is
0.5A, if it is monitored that electric current suddenly becomes 1A, then explanation mechanical load is likely to occur problem (although not reaching load faulty
Degree), monitoring device can export out load condition early warning information.
But this method has certain use to limit, because transformer is only used for alternating current circuit, it is impossible to DC load
Monitor.
Summary of the invention
The purpose of the present invention is for the deficiencies in the prior art, it is provided that a kind of Control load shape
The feedback circuit of state.
The feedback circuit of the present invention a kind of Control load condition is achieved through the following technical solutions:
The feedback circuit of a kind of Control load condition uses three silicon diodes, polarity free capacitor, two resistance
Circuit with a voltage photoelectrical coupler composition.
Silicon diode D1 and silicon diode D2 series connection, silicon diode D1 one end connection line 1, silicon diode D2 one end connects
Circuit 2, silicon diode D3 reverse two ends connection line 1 and circuit 2, electric capacity C1 two ends connection line 1 and circuit 2, circuit 1 is gone here and there
Connection resistance R1, circuit 1 and circuit 2 connect voltage photoelectrical coupler U1 input, voltage photoelectrical coupler U1 outfan output lead
Road 3 and circuit 4, circuit 4 connects resistance R2.
The feedback circuit of the present invention a kind of Control load condition simply realizes monitoring load operating condition, both
Real control object can be monitored also there is no obvious limitation, there is universal versatility.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is embodiment of the present invention structural representation；
Labelling in figure: silicon diode D1, silicon diode D2, silicon diode D3, electric capacity C1, voltage photoelectrical coupler U1, circuit 1,
Circuit 2, circuit 3, circuit 4.
Detailed description of the invention
Below in conjunction with the detailed description of the invention of accompanying drawing illustrated embodiment, the foregoing of the present invention is remake the most in detail
Describe in detail bright.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
When forward current flows through two silicon diode D1 being cascaded and silicon diode D2 (now D3 is in reversely,
Be not turned on), then can produce at electric capacity C1 two ends a 1.4V voltage (polarity be the anode of silicon diode D2 for just, silicon two pole
The negative electrode of pipe D1 is negative).This 1.4V voltage makes voltage photoelectrical coupler U1 diode be in forward, and higher than its electric conduction
Pressure, chooses suitable R1(and chooses 33 ohm here) limit the electric current flowing through U1 diode, make U1 be in the state of normal work.
When electric current flows through D3 (now silicon diode D1 and silicon diode D2 is in reversely, is not turned on), then can be at electric capacity
C1 two ends produce a 0.7V voltage (polarity be the anode of D2 be negative, the negative electrode of D1 is just).This 0.7V voltage makes photoelectricity
Bonder U1 diode is in reversely, and U1 can not work.
During U1 work, output low level；When U1 does not works, export high level.
If load power source is AC power supplies.When load power source is connected, if when power supply is in positive half cycle, electric current is had to flow through
Silicon diode D1 and silicon diode D2；When then power supply is in negative half period, electric current is had to flow through D3；When load power source is connected, if worked as
When power supply is in negative half period, electric current is had to flow through silicon diode D1 and silicon diode D2；When then power supply is in positive half cycle, there is electric current stream
Cross D3.During it is to say, load power source is connected, in any case, always there is half period U1 to work, half period U1 does not works.I.e.
When load power source is connected, U1 has half period output high level, a half period output low level；Load power source access failure or negative
When setting out the damage of existing disconnection type, U1 exports high level all the time.
If load power source is D/C power, as long as during proof load power on, electric current is to flow through silicon diode D1 and silicon
Diode D2's, U1 just can be made in running order.When i.e. load power source is connected, U1 output low level all the time；Load power source is not
Connect or load occurs that, when disconnection type damages, U1 exports high level all the time.
It is understood that for those of ordinary skills, can be according to technical scheme and send out
Bright design in addition equivalent or change, and all these change or replace the guarantor that all should belong to appended claims of the invention
Protect scope.
Claims (1)
1. the feedback circuit of a Control load condition uses three silicon diodes, polarity free capacitor, two electricity
Resistance and the circuit of a voltage photoelectrical coupler composition, it is characterised in that: silicon diode D1 and silicon diode D2 series connection, silicon two pole
Pipe D1 one end connection line (1), silicon diode D2 one end connection line (2), silicon diode D3 reverse two ends connection line (1 He
Circuit (2), electric capacity C1 two ends connection line (1) and circuit (2), upper series resistance R1 of circuit (1), circuit (1) and circuit (2) are even
Connect voltage photoelectrical coupler U1 input, voltage photoelectrical coupler U1 outfan outlet line (3) and circuit (4), on circuit (4)
Connect resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610777892.5A CN106125808A (en) | 2016-08-31 | 2016-08-31 | A kind of feedback circuit of Control load condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610777892.5A CN106125808A (en) | 2016-08-31 | 2016-08-31 | A kind of feedback circuit of Control load condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106125808A true CN106125808A (en) | 2016-11-16 |
Family
ID=57272583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610777892.5A Pending CN106125808A (en) | 2016-08-31 | 2016-08-31 | A kind of feedback circuit of Control load condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106125808A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019061172A1 (en) * | 2017-09-28 | 2019-04-04 | 深圳和而泰数据资源与云技术有限公司 | Load detection circuit and electronic device |
| CN113708482A (en) * | 2020-05-22 | 2021-11-26 | 深圳市均方根科技有限公司 | Topological structure measuring device, communication module, metering device and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2375213A1 (en) * | 1999-06-01 | 2000-12-07 | Honeywell Inc. | An electronic means to sense actuation of ac output control circuitry |
| CN2687724Y (en) * | 2004-02-23 | 2005-03-23 | 高晓忠 | Signal power supply controller for television and computer |
| CN101630149A (en) * | 2009-02-24 | 2010-01-20 | 莱得圣智能科技（上海）有限公司 | Digital multi-point switch control circuit system and controller thereof |
| US20110215770A1 (en) * | 2010-03-08 | 2011-09-08 | Jeffrey John Belz | Control circuit operable to charge a battery at multiple charge rates |
| CN103075810A (en) * | 2013-01-18 | 2013-05-01 | 深圳和而泰智能控制股份有限公司 | Power control device and water heater |
-
2016
- 2016-08-31 CN CN201610777892.5A patent/CN106125808A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2375213A1 (en) * | 1999-06-01 | 2000-12-07 | Honeywell Inc. | An electronic means to sense actuation of ac output control circuitry |
| CN2687724Y (en) * | 2004-02-23 | 2005-03-23 | 高晓忠 | Signal power supply controller for television and computer |
| CN101630149A (en) * | 2009-02-24 | 2010-01-20 | 莱得圣智能科技（上海）有限公司 | Digital multi-point switch control circuit system and controller thereof |
| US20110215770A1 (en) * | 2010-03-08 | 2011-09-08 | Jeffrey John Belz | Control circuit operable to charge a battery at multiple charge rates |
| CN103075810A (en) * | 2013-01-18 | 2013-05-01 | 深圳和而泰智能控制股份有限公司 | Power control device and water heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019061172A1 (en) * | 2017-09-28 | 2019-04-04 | 深圳和而泰数据资源与云技术有限公司 | Load detection circuit and electronic device |
| CN113708482A (en) * | 2020-05-22 | 2021-11-26 | 深圳市均方根科技有限公司 | Topological structure measuring device, communication module, metering device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |