CN203758164U - Multiplex circuit for achieving signal line and power line - Google Patents
Multiplex circuit for achieving signal line and power line Download PDFInfo
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- CN203758164U CN203758164U CN201420145819.2U CN201420145819U CN203758164U CN 203758164 U CN203758164 U CN 203758164U CN 201420145819 U CN201420145819 U CN 201420145819U CN 203758164 U CN203758164 U CN 203758164U
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Abstract
The utility model relates to an electronic control scheme for refrigerator systems, and discloses a multiplex circuit for achieving a signal line and a power line. The multiplex circuit comprises a rectifying device, a temperature control device, a signal detection device, a signal control device and a photovoltaic conversion component, wherein the rectifying device is used for converting 220V alternating current into full-wave rectified voltage to supply direct current power supply to the whole control circuit, the temperature control device is used for providing level signals to the signal detection device, the signal detection device is used for providing the level signals to the signal control device according to detected size of levels on two sides of the temperature control device, the signal control device is used for receiving the level signals from the signal detection device and controlling the on and off of an audion Q3, and the photovoltaic conversion component is used for converting the electric signals from the signal control device and controlling the operation of an inverter compressor. According to the multiplex circuit, thorough adding the signal detection device, the signal control device and the photovoltaic conversion module, the purpose of combining the signal line and the power line is achieved, and intelligent control on an inverter refrigerator is achieved; the multiplex circuit has the advantages of strong anti-interference capacity, accurate control action and low energy consumption.
Description
Technical field
The utility model relates to the automatically controlled scheme of refrigerator system, especially a kind of multiplex circuit of realizing holding wire and power line.
Background technology
At present, on market, electrical equipment holding wire and power line separate.Conventionally, in household electrical appliance, the general collection as signals such as simulation, numerals of holding wire or driving are controlled, power line, as giving the device power supplies such as heating wire, motor, can not share as single line, otherwise, just cause the inner wire harness of electrical equipment a lot, material cost is high, and technique assembling is complicated, and trouble point increases.
For the automatically controlled scheme of the frequency conversion refrigerator of common fixed refrigerator frequently repacking on market, its holding wire and power line also separate, and have serious defect: in the time that temperature is too low, cannot turn-off compressor; In the situation that environment temperature does not raise, operation is always gone down, and so not only wastes electric energy, and affects the service life of refrigerator; And, the effect of existing signal pickup assembly current limiting, compensating heater can not generate heat, and the erroneous judgement probability of aggravation frequency-changeable compressor, causes refrigerator control system malfunctioning, does not reach the object of Based Intelligent Control.
Summary of the invention
The purpose of this utility model is exactly the automatically controlled scheme that will solve the frequency conversion refrigerator of existing common fixed refrigerator frequently repacking in the market, and the control circuit increase, material cost raising, the technique assembling that exist holding wire and power line separately to cause are complicated; Refrigerator can not turn-off compressor in the time of low temperature; In the time that environment temperature does not raise, move always, cause wasting electric energy, affect the problems such as refrigerator service life, a kind of holding wire and multiplexing circuit of power line realized is provided.
Concrete scheme of the present utility model is: a kind of multiplex circuit of realizing holding wire and power line, it comprises: provide the fairing of dc source for 220V alternating current being converted to full-wave rectified voltage for whole control circuit, for the temperature control equipment of level signal is provided to signal supervisory instrument, according to the size of the level of detected temperatures control device both sides, the signal supervisory instrument of level signal is provided to signal control device, for receiving the level signal that comes from signal supervisory instrument, control the signal control device of opening with turn-offing of triode Q3 and for changing the signal of telecommunication to signal control device, control the electrooptical device of the operation of frequency-changeable compressor.
Fairing described in the utility model is the single-phase uncontrollable rectifier bridge QL being connected in parallel on mains supply, and temperature control equipment and signal supervisory instrument are connected in the output loop of rectifier bridge QL.
Series circuit and temperature controller that temperature control equipment described in the utility model is made up of temperature control magnetic K switch T and compensating heater Rb form, and the temperature-sensitive contact FR of this series circuit and temperature controller forms shunt circuit.
Signal supervisory instrument described in the utility model is mainly made up of operational amplifier U2.The in-phase input end of operational amplifier U2, through resistor R6, is connected to the intermediate node position of the bleeder circuit of resistor R4 and resistor R5 composition; The inverting input of operational amplifier U2, through resistor R3, is connected to the intermediate node position of the bleeder circuit of resistor R4 and resistor R5 composition equally.One end of two bleeder circuits is connected in parallel on respectively the two ends of temperature controller temperature-sensitive contact FR, and their other end is all connected on the negative sense output of rectifier QL.And, and the series circuit of lamp switch SB1 and illuminating lamp HL1 composition is connected in parallel on the two ends of the dividing potential drop circuit of resistor R1 and resistor R2 composition.Operational amplifier U2 by detect temperature controller both sides 4(C) point and 6(H) point level, be signal control device carry level signal.
Described in the utility model, in signal control device, form three grades of direct-coupled amplifying circuits by triode Q1, triode Q2 and triode Q3.The base stage of triode Q1 is connected to the output of operational amplifier U2, and the colelctor electrode of triode Q1 is connected to the base stage of triode Q2, and the colelctor electrode of triode Q2 is connected to the base stage of triode Q3; It is upper that their base stage is connected to power supply Vcc1 by corresponding resistor R7, resistor R8, resistor R9 respectively simultaneously, and they are connected with the negative sense output of rectifier bridge QL at emitter stage simultaneously.
The colelctor electrode of the Q3 of triode described in the utility model connects inductance L 1, is parallel with sustained diode 1 in inductance L 1; Other one end of inductance L 1 is connected to the 4(C of temperature controller) end.
Photoelectric conversion device 5 described in the utility model is mainly made up of electrooptical device U1.Electrooptical device U1 is made up of photodiode and switch triode.The positive input of photodiode is connected to the 4(C of temperature controller by R10) end, its output is connected to the negative sense output of rectifier bridge QL; The colelctor electrode of switch triode and emitter stage are parallel with capacitor C 1, its grounded emitter, one end of colelctor electrode is connected on power supply Vcc2 by resistor R11, the other end of colelctor electrode by resistor R12 in the future to the signal of electrooptical device U1, by the operation of frequency conversion plate control frequency-changeable compressor.
Brief description of the drawings
Fig. 1 realizes holding wire and the multiplexing circuit block diagram of power line shown in the utility model;
Fig. 2 realizes holding wire and the multiplexing circuit theory diagrams of power line shown in Fig. 1;
In figure: 1-fairing, 2-temperature control equipment, 3-signal supervisory instrument,
4-signal control device, 5-photoelectric conversion device.
Detailed description of the invention
Fig. 1 realizes holding wire and the multiplexing circuit block diagram of power line shown in the utility model.It is made up of fairing 1, temperature control equipment 2, signal supervisory instrument 3, signal control device 4 and photoelectric conversion device 5.Fairing 1 is converted to full-wave rectified voltage by 220V alternating current and provides dc source for whole control circuit.Signal supervisory instrument 3 is by the height of detected temperatures control device 2 both sides level, level signal is transferred to signal control device 4, signal control device 4 is made corresponding judgement, control the electrooptical device U1 action of photoelectric conversion device 5 or be failure to actuate, frequency conversion plate gathers the signal that electrooptical device U1 sends, thereby controls frequency-changeable compressor operation or stop.
Fig. 2 realizes holding wire and the multiplexing circuit theory diagrams of power line shown in Fig. 1.
In Fig. 2, fairing 1 is for being connected in parallel on the single-phase uncontrollable rectifier bridge QL on mains supply, and temperature control equipment 2 and signal supervisory instrument 3 are connected in the output loop of rectifier bridge QL.
Temperature control equipment 2 is made up of with temperature control magnetic K switch T and compensating heater Rb temperature controller.Wherein, temperature controller is composed in series by adjustable contact KM1 and temperature-sensitive contact FR, its earthing of casing, and adjustable contact KM1 is connected with rectifier bridge QL forward output; The series circuit of temperature control magnetic K switch T and compensating heater Rb composition is connected in parallel on the two ends of temperature-sensitive contact FR, and temperature controller duty is contrary with the duty of temperature magnetic switch KT.
Signal supervisory instrument 3 is mainly made up of operational amplifier U2, and the in-phase input end of operational amplifier U2, through resistor R6, is connected to the node location of the bleeder circuit of resistor R4 and resistor R5 composition; The inverting input of operational amplifier U2, through resistor R3, is connected to the node location of the bleeder circuit of resistor R4 and resistor R5 composition; One end of two bleeder circuits is connected in parallel on respectively the two ends of temperature controller temperature-sensitive contact FR, their other end is all connected on the negative sense output of rectifier QL, and the series circuit of lamp switch and illuminating lamp composition is connected in parallel on the two ends of the dividing potential drop circuit of resistor R1 and resistor R2 composition; Operational amplifier U2 by detect temperature controller both sides 4(C) point and 6(H) point level, be signal control device carry level signal.
In signal control device 4, form three grades of direct-coupled amplifying circuits by triode Q1, triode Q2 and triode Q3.The base stage of triode Q1 is connected to the output of operational amplifier U2, and the colelctor electrode of triode Q1 is connected to the base stage of triode Q2, and the colelctor electrode of triode Q2 is connected to the base stage of triode Q3; It is upper that their base stage is connected to power supply Vcc1 by corresponding resistor R7, resistor R8, resistor R9 respectively simultaneously, and they are connected with the negative sense output of rectifier bridge QL at emitter stage simultaneously; The colelctor electrode of triode Q3 connects inductance L 1, is parallel with sustained diode 1 in inductance L 1; Other one end of inductance L 1 is connected to the 4(C of temperature controller) end.
Photoelectric conversion device 5 is mainly made up of electrooptical device U1.Electrooptical device U1 is made up of photodiode and switch triode.The positive input of photodiode is connected to the 4(C of temperature-sensitive contact FR by R10) end, its output is connected to the negative sense output of rectifier bridge QL; The colelctor electrode of switch triode and emitter stage are parallel with capacitor C 1, its grounded emitter, one end of colelctor electrode is connected on power supply Vcc2 by resistor R11, the other end of colelctor electrode by resistor R12 in the future to the signal of electrooptical device U1, by the operation of frequency conversion plate control frequency-changeable compressor.
In the time of temperature controller adhesive in Fig. 2, temperature control magnetic K switch T disconnects, signal supervisory instrument 3 detects 4(C) end level and 6(H) hold level identical, operational amplifier U2 output low level, this level can not make triode Q1 saturation conduction, now causes triode Q2 conducting, triode Q3 turn-offs, electrooptical device U1 receives current signal, thereby sends signal, controls compressor operating.
In the time that the temperature controller in Fig. 2 disconnects, temperature control magnetic K switch T adhesive, signal supervisory instrument 3 detects 4(C) hold level lower than 6(H) end level, operational amplifier U2 exports high level, and this level makes triode Q1 saturation conduction, now cause triode Q2 to turn-off, triode Q3 saturation conduction, current branch is from inductance L 1, and triode Q3 flow to rectifier bridge QL negative sense output, electrooptical device U1 can not receive current signal, thereby cause compressor not move.
When temperature magnetic switch and switch for temperature controller in Fig. 2 all do not inhale and time, electrooptical device U1 can not receive current signal, thereby cause compressor not move.
In the present embodiment, inductance L 1 and sustained diode 1 in power circuit, are introduced, due to the characteristic of inductive obstacle curent change, make circuit in the time receiving extraneous pulse interference signal, can avoid the misoperation of triode Q3, cause compressor cisco unity malfunction, and inductance L 1 and the parallel circuit that fly-wheel diode forms, unnecessary interfering signal energy can be consumed.
Claims (7)
1. realize a multiplex circuit for holding wire and power line, include 220V alternating current is converted to full-wave rectified voltage for whole control circuit provides fairing and the temperature control equipment of dc source, it is characterized in that:
-signal supervisory instrument, the size of the level of detected temperatures control device both sides, provides level signal to signal control device;
-signal control device, receives the level signal that comes from signal supervisory instrument, controls opening and turn-offing of triode Q3;
-photoelectric conversion device, conversion carrys out the signal of telecommunication to signal control device, controls the operation of frequency-changeable compressor.
2. a kind of multiplex circuit of realizing holding wire and power line according to claim 1, it is characterized in that: described fairing is the single-phase uncontrollable rectifier bridge QL being connected in parallel on mains supply, and temperature control equipment and signal supervisory instrument are connected in the output loop of rectifier bridge QL.
3. a kind of multiplex circuit of realizing holding wire and power line according to claim 1, it is characterized in that: series circuit and temperature controller that described temperature control equipment is made up of temperature control magnetic K switch T and compensating heater Rb form, the temperature-sensitive contact FR of this series circuit and temperature controller forms shunt circuit.
4. a kind of multiplex circuit of realizing holding wire and power line according to claim 1, is characterized in that: described signal supervisory instrument is mainly made up of operational amplifier U2; The in-phase input end of operational amplifier U2, through resistor R6, is connected to the intermediate node position of the bleeder circuit of resistor R4 and resistor R5 composition; The inverting input of operational amplifier U2 is through resistor R3, be connected to equally the intermediate node position of the bleeder circuit of resistor R4 and resistor R5 composition, one end of two bleeder circuits is connected in parallel on respectively the two ends of temperature controller temperature-sensitive contact FR, and their other end is all connected on the negative sense output of rectifier QL; Operational amplifier U2 by detect temperature controller both sides 4(C) point and 6(H) point level, be signal control device carry level signal.
5. a kind of multiplex circuit of realizing holding wire and power line according to claim 1, is characterized in that: in described signal control device, form three grades of direct-coupled amplifying circuits by triode Q1, triode Q2 and triode Q3; The base stage of triode Q1 is connected to the output of operational amplifier U2, and the colelctor electrode of triode Q1 is connected to the base stage of triode Q2, and the colelctor electrode of triode Q2 is connected to the base stage of triode Q3; It is upper that their base stage is connected to power supply Vcc1 by corresponding resistor R7, resistor R8, resistor R9 respectively simultaneously, and they are connected with the negative sense output of rectifier bridge QL at emitter stage simultaneously.
6. a kind of multiplex circuit of realizing holding wire and power line according to claim 1 or 5, is characterized in that: the colelctor electrode of triode Q3 connects inductance L 1, is parallel with sustained diode 1 in inductance L 1; Other one end of inductance L 1 is connected to the 4(C of temperature controller) end.
7. a kind of multiplex circuit of realizing holding wire and power line according to claim 1, is characterized in that: described photoelectric conversion device 5 is mainly made up of electrooptical device U1; Electrooptical device U1 is made up of photodiode and switch triode; The positive input of photodiode is connected to the 4(C of temperature controller by R10) end, its output is connected to the negative sense output of rectifier bridge QL; The colelctor electrode of switch triode and emitter stage are parallel with capacitor C 1, its grounded emitter, one end of colelctor electrode is connected on power supply Vcc2 by resistor R11, the other end of colelctor electrode by resistor R12 in the future to the signal of electrooptical device U1, by the operation of frequency conversion plate control frequency-changeable compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145819.2U CN203758164U (en) | 2014-03-28 | 2014-03-28 | Multiplex circuit for achieving signal line and power line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145819.2U CN203758164U (en) | 2014-03-28 | 2014-03-28 | Multiplex circuit for achieving signal line and power line |
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| Publication Number | Publication Date |
|---|---|
| CN203758164U true CN203758164U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420145819.2U Expired - Fee Related CN203758164U (en) | 2014-03-28 | 2014-03-28 | Multiplex circuit for achieving signal line and power line |
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| CN (1) | CN203758164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822437A (en) * | 2014-03-28 | 2014-05-28 | 湖北东贝新能源有限公司 | Circuit achieving multiplexing of signal line and power line |
| CN107592905A (en) * | 2015-05-11 | 2018-01-16 | Lg电子株式会社 | Refrigerator and its control method |
-
2014
- 2014-03-28 CN CN201420145819.2U patent/CN203758164U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822437A (en) * | 2014-03-28 | 2014-05-28 | 湖北东贝新能源有限公司 | Circuit achieving multiplexing of signal line and power line |
| CN103822437B (en) * | 2014-03-28 | 2016-02-17 | 湖北东贝新能源有限公司 | A kind of multiplex circuit realizing holding wire and power line |
| CN107592905A (en) * | 2015-05-11 | 2018-01-16 | Lg电子株式会社 | Refrigerator and its control method |
| US10544972B2 (en) | 2015-05-11 | 2020-01-28 | Lg Electronics Inc. | Refrigerator and control method therefor |
| CN107592905B (en) * | 2015-05-11 | 2020-06-16 | Lg电子株式会社 | Refrigerator and control method thereof |
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| Date | Code | Title | Description |
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| 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: 20140806 Termination date: 20160328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |