CN105158664A - Solid state relay breakdown warning indication circuit - Google Patents
Solid state relay breakdown warning indication circuit Download PDFInfo
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- CN105158664A CN105158664A CN201510512416.6A CN201510512416A CN105158664A CN 105158664 A CN105158664 A CN 105158664A CN 201510512416 A CN201510512416 A CN 201510512416A CN 105158664 A CN105158664 A CN 105158664A
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Abstract
The invention provides a solid state relay breakdown warning indication circuit. The solid state relay breakdown warning indication circuit comprises a solid state relay; two input ends of the solid state relay are connected into a direct-current power source; a first indicating lamp is connected between the two input ends; the output end of the solid state relay is connected with an alternating-current power source; a current transformer is connected between the solid state relay and one output terminal of the alternating-current power source; the current transformer is provided with a rectification circuit; the rectification circuit is connected with a voltage stabilizing circuit; and the voltage stabilizing circuit is connected with a second indicating lamp. The actual current state of the solid state relay is indicated through the indicating lamp, when an accident occurs, a corresponding circuit is indicated, and therefore, fault warning can be realized.
Description
Technical field
The invention belongs to technical field of industrial control, particularly a kind of solid-state relay punctures warning indicating circuit.
Background technology
At present, along with the fast development of Power Electronic Technique, the solid-state relay based on IGBT group technology is applied to increasing industrial control field, as the computer heating control, metallurgy, chemical industry, textile machine etc. of industrial furnace.But, traditional solid-state relay design does not have duty deixis usually, or there is the trigger pip instruction that state-indicating function is also only limitted to indicating solid-state relay, once there is the bad problems such as such as controllable silicon punctures, controllable silicon open circuit, trigger circuit fault in solid-state relay in actual applications, the process investigating its failure cause also exists inconvenience, thus affect overhaul of the equipments speed, delay the application such as normal production.
Therefore, need now a kind of solid-state relay badly and puncture warning indicating circuit, the duty of indicating solid-state relay that can not only be real-time, and once occur puncturing or the fault such as open circuit can be reported to the police in time.
Summary of the invention
The present invention proposes a kind of solid-state relay and punctures warning indicating circuit, solves the problems of the prior art.
Technical scheme of the present invention is achieved in that the invention provides a kind of solid-state relay punctures warning indicating circuit, comprise solid-state relay, two input end access direct supplys of described solid-state relay, the first indicating circuit is connected between two input ends, the output terminal of described solid-state relay is connected with AC power, also current transformer is connected between described solid-state relay and a lead-out terminal of AC power, described current transformer is provided with rectification circuit, described rectification circuit is connected with mu balanced circuit, and described mu balanced circuit is connected with the second indicating circuit.
As one preferred embodiment, described first indicating circuit is the one in LED indicating circuit or hummer indicating circuit.
As one preferred embodiment, described second indicating circuit is the one in LED indicating circuit or hummer indicating circuit.
As one preferred embodiment, described first indicating circuit is LED indicating circuit, comprise the first pilot lamp and the first resistance, one end of described first pilot lamp connects the negative pole of described direct supply, and the other end connects the positive pole of described direct supply by the first resistance.
As one preferred embodiment, it is characterized in that, described rectification circuit is single-phase bridge full-wave rectifying circuit, comprise the first diode, second diode, 3rd diode, 4th diode and the first electric capacity, described first diode is connected described current transformer with the positive pole of described second diode, the negative pole of described first diode connects the negative pole of described second diode, described 3rd diode is connected described current transformer with the negative pole of described 4th diode, the positive pole of described 3rd diode connects the positive pole of described 4th diode, described first electric capacity one end connects the negative pole of described first diode and described second diode, the other end connects the positive pole of described 3rd diode and described 4th diode, the two ends of described first electric capacity also connect mu balanced circuit.
As one preferred embodiment, described rectification circuit is full-wave voltage doubler, comprise the 3rd resistance, second electric capacity, 3rd electric capacity, 5th diode and the 6th diode, the positive pole of described 5th diode and the negative pole of described 6th diode connect described current transformer, the negative pole of described 5th diode connects one end of described second electric capacity, the positive pole of described 6th diode connects one end of described 3rd electric capacity, the other end of described second electric capacity and the other end of described 3rd electric capacity connect described current transformer, the negative pole of described 5th diode connects one end of described 3rd resistance, the positive pole of described 6th diode connects the other end of described 3rd resistance.
As one preferred embodiment, described mu balanced circuit three terminal regulator, the input end of described three terminal regulator and earth terminal connect described rectification circuit.
After have employed technique scheme, the invention has the beneficial effects as follows: DC is DC trigger signal input end, the DC voltage of input is after the first electric resistance partial pressure, power to pilot lamp first pilot lamp, when effective DC trigger signal input, the first pilot lamp is lighted, and instruction has trigger pip to input, when removing DC trigger signal, the first pilot lamp extinguishes; The DC trigger signal of input is after the isolation of photoelectricity coupling, control power control circuit and trigger turn on thyristors, thus make electric current that AC power electric current goes out through current transformer mutual inductance through inner rectifier circuit rectifies and mu balanced circuit voltage stabilizing, power to pilot lamp second pilot lamp, the second pilot lamp is lighted; When after removal DC trigger signal, because thyristor turns off, do not have AC power electric current through current transformer, also mutual inductance would not go out electric current and power to the second pilot lamp, the second pilot lamp extinguishes, and what achieve solid-state relay punctures instruction of reporting to the police.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the block scheme that solid-state relay of the present invention punctures warning indicating circuit;
Fig. 2 is the circuit diagram that solid-state relay of the present invention punctures warning indicating circuit;
Fig. 3 is the circuit diagram that solid-state relay of the present invention punctures the single-phase bridge full-wave rectifying circuit of warning indicating circuit;
Fig. 4 is the circuit diagram that solid-state relay of the present invention punctures the full-wave voltage doubler of warning indicating circuit;
Fig. 5 is the three terminal voltage regulator circuit figure that solid-state relay of the present invention punctures warning indicating circuit.
In figure, R1-first resistance; R3-the 3rd resistance; D1-first diode; D2-second diode; D3-the 3rd diode; D4-the 4th diode; D5-the 5th diode; D6-the 6th diode; D7-the 7th diode; C1-first electric capacity; C2-second electric capacity; C3-the 3rd electric capacity; Q-thyristor; T-current transformer; LED1-first pilot lamp; LED2-second pilot lamp.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, solid-state relay of the present invention punctures warning indicating circuit, comprise solid-state relay, two input end access direct supplys of described solid-state relay, the first indicating circuit is connected between two input ends, the output terminal of described solid-state relay is connected with AC power, current transformer T is also connected between described solid-state relay and a lead-out terminal of AC power, described current transformer T is provided with rectification circuit, described rectification circuit is connected with mu balanced circuit, in order to the duty of further supervisory circuit, mu balanced circuit is connected with the second indicating circuit.
Conceive based on upper art, please refer to the circuit diagram that the solid-state relay of the present invention shown in Fig. 2 punctures warning indicating circuit, first indicating circuit and the second indicating circuit are LED indicating circuit, first indicating circuit comprises the first pilot lamp LED1, the two ends of the first pilot lamp LED1 connect two input ends of solid-state relay respectively, certainly in some cases, first indicating circuit and the second indicating circuit can also adopt circuit or the device of hummer or other instructions that are suitable for carrying out reporting to the police, and do not repeat herein; Solid-state relay of the present invention comprises photoelectrical coupler, power control circuit and thyristor Q, the input of direct current signal is realized by photoelectrical coupler, and isolation is completed to the low frequency signal of the high-frequency signal of input, be independent of each other, realized the convergent-divergent of signal by power control circuit, thus control the switch of thyristor Q.
Please refer to the circuit diagram that the solid-state relay of the present invention shown in Fig. 3 punctures the single-phase bridge full-wave rectifying circuit of warning indicating circuit, comprise the first diode D1, second diode D2, 3rd diode D3, 4th diode D4 and the first electric capacity C1, described first diode D1 is connected described current transformer T with the positive pole of described second diode D2, the negative pole of described first diode D1 connects the negative pole of described second diode D2, described 3rd diode D3 is connected described current transformer T with the negative pole of described 4th diode D4, the positive pole of described 3rd diode D3 connects the positive pole of described 4th diode D4, described first electric capacity C1 one end connects the negative pole of described first diode D1 and described second diode D2, the other end connects the positive pole of described 3rd diode D3 and described 4th diode D4, the two ends of described first electric capacity C1 also connect mu balanced circuit, diode in rectification circuit uses as switch, have to electric conductivity, the 4th diode D4 when positive half cycle, second diode D2 conducting, pull-up resistor obtains sinusoidal wave positive half cycle.The 3rd diode D3, the first diode D1 conducting when negative half period, pull-up resistor obtains sinusoidal wave negative half period.On pull-up resistor, positive-negative half-cycle is through synthesis, and what obtain is the unidirectional pulsating volage in same direction.The output voltage of single phase bridge type rectifier circu is single-phase pulsating volage, usually with its mean value and DC voltage equivalence.
Please refer to the circuit diagram that the solid-state relay of the present invention shown in Fig. 4 punctures the full wave and voltage doubling formula rectification circuit of warning indicating circuit, comprise the 3rd resistance R3, second electric capacity C2, 3rd electric capacity C3, 5th diode D5 and the 6th diode D6, the positive pole of described 5th diode D5 and the negative pole of described 6th diode D6 connect described current transformer T, the negative pole of described 5th diode D5 connects one end of described second electric capacity C2, the positive pole of described 6th diode D6 connects one end of described 3rd electric capacity C3, the other end of described second electric capacity C2 and the other end of described 3rd electric capacity C3 connect described current transformer T, the negative pole of described 5th diode D5 connects one end of described 3rd resistance R3, the positive pole of described 6th diode D6 connects the other end of described 3rd resistance R3, during positive half cycle, 5th diode D5 conducting, 6th diode D6 ends, second electric capacity C2 is charged to Vm, during negative half period, 5th diode D5 ends, 6th diode D6 conducting, 3rd electric capacity C3 is charged to Vm, because the second electric capacity C2 connects with the 3rd electric capacity C3, therefore output DC voltage, V0=Vm.If not from circuit draws load current, the voltage on the second electric capacity C2 and the 3rd electric capacity C3 is 2Vm.If from circuit draws load current, the voltage on the first electric capacity C1 and second is same with the voltage on the capacitor be fed to by full-wave rectifying circuit.Difference is, actual effect electric capacity is the series capacitance of the second electric capacity C2 and the 3rd electric capacity C3, and this is more independent than the second electric capacity C2 and the 3rd electric capacity C3 all little.This lower capacitance will make good not as good as single capacitor filtering circuit of its filter action.During positive half cycle, the maximum revers voltage suffered by the 6th diode D6D6 is 2Vm, and during negative half period, the maximum revers voltage that the 5th diode D5 bears is 2Vm, so should select the diode of PVI > 2Vm in circuit.
In the three terminal voltage regulator circuit figure shown in Fig. 5, the input end of three terminal regulator and earth terminal connect rectification circuit, in order to ensure the normal work of mu balanced circuit further, the 7th diode D7 is also connected between the output terminal of three terminal regulator and input end, the positive pole of the 7th diode D7 connects the output terminal of three terminal regulator, and the negative pole of the 7th diode D7 connects three-terminal voltage-stabilizing quality input end; Stablizing by simple three terminal regulator realizing circuit voltage, ensures that the second pilot lamp LED2 can not be burned.
The principle of work that this solid-state relay punctures warning indicating circuit is: DC is DC trigger signal input end, the DC voltage of input is after the first resistance R1 dividing potential drop, power to pilot lamp first pilot lamp LED1, when effective DC trigger signal input, first pilot lamp LED1 lights, instruction has trigger pip to input, and when removing DC trigger signal, the first pilot lamp LED1 extinguishes; The DC trigger signal of input is after the isolation of photoelectricity coupling, control power control circuit and trigger thyristor Q conducting, thus make electric current that AC power electric current goes out through current transformer T mutual inductance through inner rectifier circuit rectifies and mu balanced circuit voltage stabilizing, power to pilot lamp second pilot lamp LED2, the second pilot lamp LED2 lights; When after removal DC trigger signal, because thyristor Q turns off, do not have AC power electric current through current transformer T, also mutual inductance would not go out electric current and power to the second pilot lamp LED2, the second pilot lamp LED2 extinguishes.
After the inner thyristor Q of solid-state relay is breakdown, form short circuit, the conducting of thyristor Q is no longer by the control of power control circuit, and cause having electric current to pass current transformer T always, and then cause mutual inductance always go out electric current give the second pilot lamp LED2 power, so long bright, now for thyristor Q punctures warning; When accessing the load circuit open circuit of solid-state relay, no matter thyristor Q whether conducting, do not have electric current through current transformer T, also would not mutual inductance go out electric current give the second pilot lamp LED2 power, second pilot lamp LED2 is long to go out, now for load circuit open circuit is reported to the police, realize the warning instruction that solid-state relay punctures.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a solid-state relay punctures warning indicating circuit, it is characterized in that, comprise solid-state relay, two input end access direct supplys of described solid-state relay, the first indicating circuit is connected between two input ends, the output terminal of described solid-state relay is connected with AC power, also current transformer is connected between described solid-state relay and a lead-out terminal of AC power, described current transformer is provided with rectification circuit, described rectification circuit is connected with mu balanced circuit, and described mu balanced circuit is connected with the second indicating circuit.
2. solid-state relay according to claim 1 punctures warning indicating circuit, it is characterized in that, described first indicating circuit is LED indicating circuit.
3. solid-state relay according to claim 2 punctures warning indicating circuit, it is characterized in that, described LED indicating circuit, comprise the first pilot lamp and the first resistance, one end of described first pilot lamp connects the negative pole of described direct supply, and the other end connects the positive pole of described direct supply by the first resistance.
4. solid-state relay according to claim 1 punctures warning indicating circuit, it is characterized in that, described second indicating circuit is LED indicating circuit.
5. the solid-state relay according to any one of claim 1-4 punctures warning indicating circuit, it is characterized in that, described rectification circuit is single-phase bridge full-wave rectifying circuit, comprise the first diode, second diode, 3rd diode, 4th diode and the first electric capacity, described first diode is connected described current transformer with the positive pole of described second diode, the negative pole of described first diode connects the negative pole of described second diode, described 3rd diode is connected described current transformer with the negative pole of described 4th diode, the positive pole of described 3rd diode connects the positive pole of described 4th diode, described first electric capacity one end connects the negative pole of described first diode and described second diode, the other end connects the positive pole of described 3rd diode and described 4th diode, the two ends of described first electric capacity also connect mu balanced circuit.
6. the solid-state relay according to any one of claim 1-4 punctures warning indicating circuit, it is characterized in that, described rectification circuit is full-wave voltage doubler, comprise the 3rd resistance, second electric capacity, 3rd electric capacity, 5th diode and the 6th diode, the positive pole of described 5th diode and the negative pole of described 6th diode connect described current transformer, the negative pole of described 5th diode connects one end of described second electric capacity, the positive pole of described 6th diode connects one end of described 3rd electric capacity, the other end of described second electric capacity and the other end of described 3rd electric capacity connect described current transformer, the negative pole of described 5th diode connects one end of described 3rd resistance, the positive pole of described 6th diode connects the other end of described 3rd resistance.
7. solid-state relay according to claim 1 punctures warning indicating circuit, it is characterized in that, described mu balanced circuit three terminal regulator, the input end of described three terminal regulator and earth terminal connect described rectification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510512416.6A CN105158664A (en) | 2015-08-19 | 2015-08-19 | Solid state relay breakdown warning indication circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510512416.6A CN105158664A (en) | 2015-08-19 | 2015-08-19 | Solid state relay breakdown warning indication circuit |
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| CN105158664A true CN105158664A (en) | 2015-12-16 |
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| CN201510512416.6A Pending CN105158664A (en) | 2015-08-19 | 2015-08-19 | Solid state relay breakdown warning indication circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106875794A (en) * | 2017-03-29 | 2017-06-20 | 上海正远电子技术有限公司 | A kind of quick burst of pulses immunity test device of teaching consuming energy |
| CN117060748A (en) * | 2023-08-21 | 2023-11-14 | 哈尔滨工业大学 | Single-stage bridgeless isolation flyback rectifier based on double-capacitance output structure |
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| CN204314664U (en) * | 2014-12-23 | 2015-05-06 | 四川中曼电气工程技术有限公司 | A kind of solid-state relay detecting and controlling system |
| CN204945786U (en) * | 2015-08-19 | 2016-01-06 | 斯坦恩贝格(北京)电子有限公司 | A kind of solid-state relay punctures warning indicating circuit |
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2015
- 2015-08-19 CN CN201510512416.6A patent/CN105158664A/en active Pending
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| CN2298524Y (en) * | 1997-04-09 | 1998-11-25 | 辽河石油勘探局机械修造集团公司 | Multifunction silicon controlled detector |
| WO2000072342A2 (en) * | 1999-05-21 | 2000-11-30 | Watlow Electric Manufacturing Company | Mercury-free arcless hybrid relay |
| CN2421777Y (en) * | 2000-04-21 | 2001-02-28 | 无锡市正达机电研究所 | Solid-state relay |
| JP2005100924A (en) * | 2003-08-20 | 2005-04-14 | Omron Corp | Switching circuit and its driving method |
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| CN201218833Y (en) * | 2008-04-29 | 2009-04-08 | 比亚迪股份有限公司 | Controlled silicon detection apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106875794A (en) * | 2017-03-29 | 2017-06-20 | 上海正远电子技术有限公司 | A kind of quick burst of pulses immunity test device of teaching consuming energy |
| CN117060748A (en) * | 2023-08-21 | 2023-11-14 | 哈尔滨工业大学 | Single-stage bridgeless isolation flyback rectifier based on double-capacitance output structure |
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Application publication date: 20151216 |