CN202889312U - Low power consumption low-voltage control relay with optical isolator - Google Patents
Low power consumption low-voltage control relay with optical isolator Download PDFInfo
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- CN202889312U CN202889312U CN 201220655575 CN201220655575U CN202889312U CN 202889312 U CN202889312 U CN 202889312U CN 201220655575 CN201220655575 CN 201220655575 CN 201220655575 U CN201220655575 U CN 201220655575U CN 202889312 U CN202889312 U CN 202889312U
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Abstract
The utility model discloses a low power consumption low-voltage control relay with an optical isolator. The low power consumption low-voltage control relay comprises a charge and discharge module, a triode amplification module and an optical coupler isolation module, wherein the optical coupler isolation module is electrically connected with the triode amplification module, the charge and discharge module is connected with a high-power relay and is used for discharging current to reach an attraction voltage for attracting of a relay and then keeping a small maintaining voltage, one end of an optical coupler module is connected with a control signal, the other end of the optical coupler module is connected with a controlled signal, two control signals are mutually isolated; a relay controls a large signal by using a small signal; the triode control circuit controls the switching on or off of the attraction voltage through a switch tube; and the output optical coupler isolation module can well isolate the controlled signal from the control signal to ensure that the crosstalk rate between the signals is reduced, the noise interference is decreased, and the reliability of the control signal is improved. According to the low power consumption low-voltage control relay, the problem of overlarge maintaining current of the existing high-power relay can be overcome, the power consumption is reduced, the defect of signal interference between the controlled signal and the control signal is eliminated, and the working reliability of the relay is improved.
Description
Technical field
The utility model relates to stable large power consumption relay technical field, can use this technology realization to the accurate control of controlled quentity controlled variable.
Background technology
In the market all high power relays as a kind of electronic devices and components with small-signal control large-signal be widely used in industry, commerce, etc. need to ensure the various aspects of life safety.Their advantage is no matter to want not allow effector or device dangerous somewhere, makes one side of operator's touch-safe, allows relay go to contact dangerous one side, and as long as the operator is the control relay action.The relay principle is with very little electric power and electric current, drives an equipment (motor or electromagnet) load of drive (such as electric brake or contact chip) and allows this contact chip remove bearing great current.It is large that but its weak point is power consumption, considers not comprehensive for the Anti-jamming of signal ability.
In view of above reason, by the further investigation at present all large power consumption relay essence, find that existing high power relay exists power consumption excessive, it is higher that relay is kept the needed voltage of attracting state.The equipment of heavy current for controlled variable, the interference that the controlled quentity controlled variable of relay one end will be easy to be subject to controlled volume causes the misoperation of relay, affected greatly the dependable with function of relay, may cause a hidden trouble to production after promoting, light economic loss then, heavy then bring the accident of safety in production, thereby the utility model proposes in line with enhancing productivity and guaranteeing safe production.
The utility model content
The utility model has overcome shortcoming of the prior art, and a kind of low-power consumption low voltage control relay with light-coupled isolation that can boost and isolate interference is provided.
The utility model is achieved through the following technical solutions:
A kind of low-power consumption low voltage control relay with light-coupled isolation, comprise charge-discharge modules, triode amplification module and light-coupled isolation module, described light-coupled isolation module and triode amplification module are electrically connected, described charge-discharge modules is connected with high power relay, release current reaches the pick-up voltage of relay adhesive, keeps afterwards less voltage, the photoelectric coupler module one end connection control signal kept, the other end connects controlled signal, and two signals are kept apart mutually; Relay uses small-signal control large-signal; Described charge-discharge modules adopts simple RC charge-discharge circuit; Described transistor control circuit is with the break-make of switch controlled relay pick-up voltage; Described output light-coupled isolation module can be good at controlled signal and control signal isolated, so that the rate of crosstalking between the signal reduces, the noise jamming of reduction has improved the reliability of control signal.The utility model can overcome existing high power relay to keep electric current excessive, reduce power consumption, the signal that has solved simultaneously between controlled signal and the control signal disturbs, and has improved the functional reliability of relay.
Utilize the charging/discharging function of RC circuit, further reduce to control voltage, so that the power consumption of relay further reduces, so just realized the characteristics of low-voltage and low-power dissipation.During relay work higher pick-up voltage and lower release voltage are arranged, and occupy the middle voltage of keeping.For example the pick-up voltage of general low power relay is 3.5V, and release voltage is 0.5V, and the pick-up voltage of keeping its attracting state only needs about 2V.After the relay adhesive, can keep with the pick-up voltage that is lower than relay itself its attracting state, namely keep the power consumption that voltage reduces relay.The utility model just is being based on this point and the RC circuit that proposes provides the moment of relay to inhale and electric current, keeps attracting state with lower voltage more afterwards.In addition, the utility model article is a kind of high power relay.The electric current of its controlled signal is very large generally to have very strong interference for control signal, this just requires device control signal and the isolated realization controlled signal of manipulated signal and manipulated signal can not to be interfere with each other, reach the accurate control to manipulated signal, avoid relay to be subjected to powerful interference and produce misoperation.A kind of optical coupler isolation control signal and manipulated signal of utilizing of the utility model introduction just can well be realized this point.Thereby the method for described reduction power consumption is to substitute the effect that pick-up voltage reaches the reduction power consumption by the lower voltage of keeping of usefulness, and described charge-discharge modules is simple.Only need simple RC charge-discharge modules to realize that described isolation signals device is the optical coupler isolating device, isolation signals is reliable and stable.And power consumption is little, is conducive to execution steady in a long-term.
Triode in the circuit is that its effect is to keep electric current for capacitor charging and for relay provides as switching tube.Relay will be realized its function under the acting in conjunction of above device, realize the Reliable Control Systems of low-voltage and low-power dissipation.
Compared with prior art, the beneficial effects of the utility model are as follows: the power consumption that has overcome existing high power relay is excessive, uses the higher signal that has solved simultaneously between controlled signal and the control signal of control voltage to disturb, and has improved the functional reliability of relay.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is four line structure schematic diagrams of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1; the utility model comprises optical coupler; transistor control circuit; the RC charge-discharge modules; protective circuit of diode; the compositions such as relay control module; R26 is 270 ohm current-limiting resistance, and VCC provides power supply for optocoupler TLP521-4, and P10 is monolithic processor controlled input signal port; R27 is the pull-up resistor of 1K ohm; R28 is the current-limiting resistance of 3K ohm, and the effect of triode 9012 is to use the break-make of control relay as switching tube; R35; R34; E1; R1; D15; 1N4148 and relay form the control module of relay jointly, comprise reverse protection and boost module.
Signal is in input P10 input, and given input signal low level will make the light-emitting diode work of optical coupler inside by the VCC that connects by R26, and wherein R26 is current-limiting resistance.Receiving device receives signal simultaneously, the base stage of the triode 9012 that the right-hand member that makes optocoupler is connected by R28 by pull-up resistor R27 connect+the 12V power supply obtains high level, thereby so that triode conducting.
To charge to E1 after the triode conducting, provide lower voltage by R35 to relay simultaneously, the voltage of this moment does not reach suction and the voltage of relay, thereby relay and being failure to actuate, but when the quantity of electric charge that capacitor fills reaches one regularly, again will be so that higher electric current of the instantaneous acquisition of the control end of relay by illustrated RC booster circuit, this voltage can reach the adhesive requirement of relay, thereby relay will be in the adhesive of the moment of capacitor discharge.
After the relay adhesive, relay can be maintained attracting state by the low-voltage control signal that R35 provides, and has reached low voltage control to reduce the effect of power consumption with this.
In like manner, when signal when input P10 gives high level signal, by the VCC that connects by R26 the light-emitting diode of optical coupler inside will not be worked.The receiving device of optocoupler inside can not receive signal, and the base stage of the triode 9012 that the right-hand member that makes optocoupler is connected by R28 can not obtain high level, so that the triode cut-off.
After the triode cut-off, the pick-up voltage of originally keeping the relay adhesive also will drop to the state close to 0V thereupon, and relay will reach the state of release voltage, and relay contact breaks away from former contact point, and controlled device also quits work simultaneously.
The moment of the adhesive of high power relay and release in this whole process will be because the mutual inductance effect of coil will produce powerful induced current and induced voltage, this all will be the interference volume that affects control signal, relay misoperation is done, produced great uncertain factor.
The utility model is in order to address this problem the idea that has proposed with optocoupler disconnecting relay both sides signal, as can be seen from the figure, because the existence of optocoupler has been arranged, so that control signal is good and manipulated signal is isolated, so namely can realize precisely errorless control to relay, the possibility of greatly having avoided relay misoperation to do is for production control provides good guarantee condition.
The final realization of the utility model will be used the control relay circuit of four tunnel light-coupled isolations, as shown in Figure 2, can adapt to like this multichannel control requirement in the production control, use four road integrated circuits can greatly reduce the cost in production and shared space, can find out from realistic meaning, the utlity model has higher applicability, good reliability and practicality preferably.
Above-described embodiment has carried out exemplary description to the new example of this practicality by reference to the accompanying drawings; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the various improvement that method of the present utility model is conceived and technical scheme is carried out or be equal to replacement; or be directly used in other occasion without improvement, all within protection range of the present utility model.
Claims (3)
1. low-power consumption low voltage control relay with light-coupled isolation, comprise charge-discharge modules, triode amplification module and light-coupled isolation module, it is characterized in that: described light-coupled isolation module and triode amplification module are electrically connected, described charge-discharge modules is electrically connected with high power relay, photoelectric coupler module one end connection control signal, the other end connects controlled signal.
2. the low-power consumption low voltage control relay with light-coupled isolation according to claim 1 is characterized in that: the simple RC charge-discharge circuit of described charge-discharge modules employing.
3. the low-power consumption low voltage control relay with light-coupled isolation according to claim 1, it is characterized in that: described transistor control circuit is with the break-make of switch controlled relay pick-up voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220655575 CN202889312U (en) | 2012-11-19 | 2012-11-19 | Low power consumption low-voltage control relay with optical isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220655575 CN202889312U (en) | 2012-11-19 | 2012-11-19 | Low power consumption low-voltage control relay with optical isolator |
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| Publication Number | Publication Date |
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| CN202889312U true CN202889312U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220655575 Expired - Fee Related CN202889312U (en) | 2012-11-19 | 2012-11-19 | Low power consumption low-voltage control relay with optical isolator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785180A (en) * | 2016-03-21 | 2016-07-20 | 成都天进仪器有限公司 | Multifunctional intelligent relay protection tester |
| CN107678413A (en) * | 2017-11-16 | 2018-02-09 | 无锡七百二十度科技有限公司 | A kind of natural gas pressure regulating station remote monitoring system based on MOBUS agreements |
| CN111308235A (en) * | 2019-12-10 | 2020-06-19 | 国网河南省电力公司洛阳供电公司 | Relay protection contact action tester based on wireless transmission |
-
2012
- 2012-11-19 CN CN 201220655575 patent/CN202889312U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785180A (en) * | 2016-03-21 | 2016-07-20 | 成都天进仪器有限公司 | Multifunctional intelligent relay protection tester |
| CN107678413A (en) * | 2017-11-16 | 2018-02-09 | 无锡七百二十度科技有限公司 | A kind of natural gas pressure regulating station remote monitoring system based on MOBUS agreements |
| CN111308235A (en) * | 2019-12-10 | 2020-06-19 | 国网河南省电力公司洛阳供电公司 | Relay protection contact action tester based on wireless transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131119 |