CN105655199A - Relay control device and method - Google Patents
Relay control device and method Download PDFInfo
- Publication number
- CN105655199A CN105655199A CN201610032643.3A CN201610032643A CN105655199A CN 105655199 A CN105655199 A CN 105655199A CN 201610032643 A CN201610032643 A CN 201610032643A CN 105655199 A CN105655199 A CN 105655199A
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- signal
- fiber optic
- relay
- phase inverter
- optical fiber
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000013307 optical fiber Substances 0.000 claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
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- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses a relay control device and method, wherein the device comprises a main control board and a relay control board. The main control board comprises a main control chip and an optical fiber transmitter. A general input and output port of the main control chip is connected to a voltage dividing resistor, and the other end of the voltage dividing resistor is connected to an input end of a first inverter and a pull-down resistor. An output end of the first inverter is connected to a control port of the optical fiber transmitter, and the other end of the pull-down resistor is grounded. The first inverter is used for identifying a weak pull-up signal after voltage division into a low level and driving the optical fiber transmitter on the condition that a relay control signal emitted by the main control chip is the weak pull-up signal. The relay control board comprises an optical fiber receiver. The optical fiber receiver is connected with a second inverter, a switch circuit and a relay control port in sequence. The optical fiber receiver is connected with the optical fiber transmitter through an optical bier cable. According to the invention, the weak pull-up signal is identified into the low level, so that the problem of false conduction caused by the weak pull-up signal is effectively avoided.
Description
Technical field
The present invention relates to the Control technical field of high-power frequency conversion cabinet, specifically, it relates to a kind of relay control device and method.
Background technology
At present, in high-power frequency conversion cabinet, generally by master control board and Control plate separately independent design, the two is by Fiber connection, and its structure is as shown in Figure 1. Based on the structure shown in Fig. 1, conventional means of relay controlling is: master control chip 11 sends relay control signal through optical fiber driving circuit 12 to drive the LED in fiber optic transmitter 13 (LightEmittingDiode, photodiode); Fiber optic receiver 21 on Control plate 20 receives, by optical fiber cable 30, the relay control signal that master control board 10 sends, and this relay control signal is transferred to control port 23 by optical receiving circuit 22, with the conducting of relay.
When the master control chip of master control board is DSP (DigitalSignalProcessing, digital signal processing) time, in the process downloading program to master control chip, GPIO mouth (the GeneralPurposeInputOutput of chip, universal input exports) it is in the state of weak pull-up, this weak pull-up state recognition can be high level signal by optical fiber driving circuit, thus drives the LED in fiber optic transmitter to become bright, rly. is caused to mislead, it is easy to cause frequency conversion tank to damage.
Summary of the invention
Embodiments provide a kind of relay control device and method, at least to solve weak pull-up signal wrong identification in prior art as high level signal, cause the problem that rly. misleads.
For achieving the above object, embodiments provide a kind of relay control device, comprising: master control board and Control plate; Described master control board comprises: master control chip and fiber optic transmitter; The universal input and output port of described master control chip is connected to one end of point compressive resistance, the other end of described point of compressive resistance is connected to the input terminus of the first phase inverter and lower pull-up resistor respectively, the output terminal of described first phase inverter is connected to the control port of described fiber optic transmitter, the other end ground connection of described lower pull-up resistor; Described first phase inverter is used for when the relay control signal that master control chip sends is weak pull-up signal, is lower level by the weak pull-up Signal analysis after dividing potential drop, and drives described fiber optic transmitter; Described Control plate comprises: fiber optic receiver, and described fiber optic receiver is connected with Control port by the 2nd phase inverter, switch circuit successively; Described fiber optic receiver is connected with described fiber optic transmitter by optical fiber cable.
As preferably, described fiber optic receiver is connected to the input terminus of described 2nd phase inverter, the output terminal of described 2nd phase inverter is connected to the control end of described switch circuit.
As preferably, described switch circuit is triode.
As preferably, described optical fiber cable is Optical Fiber Transmission vitreum.
According to a further aspect in the invention, provide a kind of means of relay controlling, realize based on above-mentioned relay control device, the method comprises: the master control chip on master control board sends relay control signal, and described relay control signal transfers to the first phase inverter after point compressive resistance and drop-down electric resistance partial pressure; If described relay control signal is weak pull-up signal, the weak pull-up Signal analysis after dividing potential drop is lower level and drives fiber optic transmitter by described first phase inverter; Described low transition is become optical signal by described fiber optic transmitter, and transmits described optical signal by optical fiber cable; Fiber optic receiver in Control plate receives described optical signal, described optical signal is converted to electrical signal, described electrical signal is transferred to switch circuit through the 2nd phase inverter, drives conducting or the shutoff of described switch circuit, with the conducting of relay or shutoff.
As preferably, described switch circuit is triode.
As preferably, described optical fiber cable is Optical Fiber Transmission vitreum.
The technical scheme of application the present invention, can be lower level by the weak pull-up Signal analysis after dividing potential drop, effectively prevent the problem that the weak pull-up signal of GPIO mouth causes rly. to mislead, frequency conversion tank can not be damaged, enhance the reliability of whole frequency conversion tank, and this relay control device structure is simple, it may also be useful to convenient and swift.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the part of the application, and the schematic description and description of the present invention, for explaining the present invention, does not form limitation of the invention. In the accompanying drawings:
Fig. 1 is the structural representation of the Control of prior art;
Fig. 2 is the structural representation of the relay control device of the embodiment of the present invention;
Fig. 3 is the schema of the means of relay controlling of the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Embodiments provide a kind of relay control device, it is applied to high-power frequency conversion cabinet. Fig. 2 is the structural representation of the relay control device of the embodiment of the present invention, and as shown in Figure 2, this relay control device comprises: master control board 100 and Control plate 200.
Master control board 100 comprises: master control chip 101 and fiber optic transmitter 102. The universal input and output port (GPIO mouth) of master control chip 101 is connected to one end of point compressive resistance 103, the other end of compressive resistance 103 is divided to be connected to input terminus and the lower pull-up resistor 105 of the first phase inverter 104 respectively, the output terminal of the first phase inverter 104 is connected to the control port of fiber optic transmitter 102, the other end ground connection of lower pull-up resistor 105.
First phase inverter 104 for the relay control signal (i.e. signal A in Fig. 2) that sends at master control chip 101 for weak pull-up signal, be lower level by the weak pull-up Signal analysis after dividing potential drop, and drive fiber optic transmitter 102.
Control plate 200 comprises: fiber optic receiver 201, and fiber optic receiver 201 is connected with Control port 204 by the 2nd phase inverter 202, switch circuit 203 successively.
Fiber optic receiver 201 is connected with fiber optic transmitter 102 by optical fiber cable 300.
By above-mentioned relay control device, can be lower level by the weak pull-up Signal analysis after dividing potential drop, effectively prevent the problem that the weak pull-up signal of GPIO mouth causes rly. to mislead, frequency conversion tank can not be damaged, enhance the reliability of whole frequency conversion tank, and this relay control device structure is simple, it may also be useful to convenient and swift.
Based on said structure and the relation of connection, anti-phase by two phase inverters, the relay control signal that sends with master control chip 101 control signal with frequency same-phase can be obtained at Control plate 200, to realize the control to rly..
Concrete, fiber optic receiver 201 is connected to the input terminus of the 2nd phase inverter 202, and the output terminal of the 2nd phase inverter 202 is connected to the control end of switch circuit 203.
Master control chip 101 can be dsp chip.
Preferably, switch circuit 203 can be triode.
Above-mentioned optical fiber cable 300 is Optical Fiber Transmission vitreum.
That divides compressive resistance 103 chooses the ability depending on that the first phase inverter 104 identifies high low level signal. Generally, the weak pull-up level signal of GPIO mouth is not too high, and the resistance of point compressive resistance 103 can be chosen within 100 ohm. The resistance of lower pull-up resistor 105 can at 10K ohms.
Weak pull-up Signal analysis after dividing potential drop can be lower level by the first phase inverter 104 on master control board 100, only it is identified as high level when master control chip 101 sends high level signal, and this first phase inverter 104 needs to choose the stronger phase inverter of driving force, to drive fiber optic transmitter 102. For different chips, the first phase inverter 104 identifies that high low level voltage is different.
2nd phase inverter 202 mainly plays anti-phase effect. Such as, the first phase inverter 104 can use the phase inverter that model is ULN2003A, and the 2nd phase inverter 202 can use the phase inverter that model is SN74HCT04D.
The embodiment of the present invention additionally provides a kind of means of relay controlling, realizes based on above-mentioned relay control device, and Fig. 3 is the schema of the means of relay controlling of the embodiment of the present invention, and as shown in Figure 3, the method comprises:
Step S301, the master control chip on master control board sends relay control signal, and relay control signal transfers to the first phase inverter after point compressive resistance and drop-down electric resistance partial pressure.
Step S302, if relay control signal is weak pull-up signal, the weak pull-up Signal analysis after dividing potential drop is lower level and drives fiber optic transmitter by the first phase inverter.
Step S303, this low transition is become optical signal by fiber optic transmitter, and transmits this optical signal by optical fiber cable. Concrete, the relay control signal sent by master control chip is controlled the LED in fiber optic transmitter and becomes bright or do not work, and namely realizes relay control signal by the transformation of electrical signal to optical signal.
Step S304, the fiber optic receiver in Control plate receives this optical signal, and this optical signal is converted to electrical signal, and this electrical signal is transferred to switch circuit through the 2nd phase inverter, drives conducting or the shutoff of switch circuit, with the conducting of relay or shutoff.
By above-mentioned means of relay controlling, it is possible to be lower level by the weak pull-up Signal analysis after dividing potential drop, effectively prevent the problem that the weak pull-up signal of GPIO mouth causes rly. to mislead, frequency conversion tank can not be damaged, enhance the reliability of whole frequency conversion tank.
The relay control device of the present invention and method are also applicable to other opticfiber communication occasions, or there is the master control chip of weak pull-up phenomenon.
Certainly, it is more than the preferred embodiment of the present invention. It is noted that for those skilled in the art, under the prerequisite not departing from ultimate principle of the present invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (7)
1. a relay control device, it is characterised in that, comprising: master control board and Control plate;
Described master control board comprises: master control chip and fiber optic transmitter;
The universal input and output port of described master control chip is connected to one end of point compressive resistance, the other end of described point of compressive resistance is connected to the input terminus of the first phase inverter and lower pull-up resistor respectively, the output terminal of described first phase inverter is connected to the control port of described fiber optic transmitter, the other end ground connection of described lower pull-up resistor;
Described first phase inverter is used for when the relay control signal that master control chip sends is weak pull-up signal, is lower level by the weak pull-up Signal analysis after dividing potential drop, and drives described fiber optic transmitter;
Described Control plate comprises: fiber optic receiver, and described fiber optic receiver is connected with Control port by the 2nd phase inverter, switch circuit successively;
Described fiber optic receiver is connected with described fiber optic transmitter by optical fiber cable.
2. relay control device according to claim 1, it is characterised in that, described fiber optic receiver is connected to the input terminus of described 2nd phase inverter, and the output terminal of described 2nd phase inverter is connected to the control end of described switch circuit.
3. relay control device according to claim 1, it is characterised in that, described switch circuit is triode.
4. relay control device according to claim 1, it is characterised in that, described optical fiber cable is Optical Fiber Transmission vitreum.
5. a means of relay controlling, realizes based on the relay control device according to any one of Claims 1-4, it is characterised in that, described method comprises:
Master control chip on master control board sends relay control signal, and described relay control signal transfers to the first phase inverter after point compressive resistance and drop-down electric resistance partial pressure;
If described relay control signal is weak pull-up signal, the weak pull-up Signal analysis after dividing potential drop is lower level and drives fiber optic transmitter by described first phase inverter;
Described low transition is become optical signal by described fiber optic transmitter, and transmits described optical signal by optical fiber cable;
Fiber optic receiver in Control plate receives described optical signal, described optical signal is converted to electrical signal, described electrical signal is transferred to switch circuit through the 2nd phase inverter, drives conducting or the shutoff of described switch circuit, with the conducting of relay or shutoff.
6. means of relay controlling according to claim 5, it is characterised in that, described switch circuit is triode.
7. means of relay controlling according to claim 5, it is characterised in that, described optical fiber cable is Optical Fiber Transmission vitreum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032643.3A CN105655199A (en) | 2016-01-18 | 2016-01-18 | Relay control device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032643.3A CN105655199A (en) | 2016-01-18 | 2016-01-18 | Relay control device and method |
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| CN105655199A true CN105655199A (en) | 2016-06-08 |
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| CN201610032643.3A Pending CN105655199A (en) | 2016-01-18 | 2016-01-18 | Relay control device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667274A (en) * | 2018-05-22 | 2018-10-16 | 青岛海尔智能技术研发有限公司 | The control circuit of driving plate power supply output |
| CN109495096A (en) * | 2018-10-23 | 2019-03-19 | 珠海格力电器股份有限公司 | Solid-state relay driving device, frequency conversion cabinet and solid-state relay driving method thereof |
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| CN101127484A (en) * | 2007-05-23 | 2008-02-20 | 中国科学院电工研究所 | A digital high voltage DC power |
| CN102497126A (en) * | 2011-12-21 | 2012-06-13 | 阳光电源股份有限公司 | Fan converter power unit driving circuit |
| CN202957590U (en) * | 2012-09-04 | 2013-05-29 | 苏州东剑智能科技有限公司 | Short circuit fault rapid isolation and power supply recovery system in power gird |
| CN202975637U (en) * | 2012-12-03 | 2013-06-05 | 哈尔滨九洲电气股份有限公司 | On-off input signal collecting and on-off output signal forwarding device for wind power generation |
| CN104319989A (en) * | 2014-11-14 | 2015-01-28 | 浙江艾罗电源有限公司 | Anti-electromagnetic interference drive circuit with double inverters |
| CN105119478A (en) * | 2015-09-30 | 2015-12-02 | 苏州英威腾电力电子有限公司 | Bypass contactor control panel of power unit |
| CN205487946U (en) * | 2016-01-18 | 2016-08-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Controller of relay |
-
2016
- 2016-01-18 CN CN201610032643.3A patent/CN105655199A/en active Pending
Patent Citations (7)
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| CN101127484A (en) * | 2007-05-23 | 2008-02-20 | 中国科学院电工研究所 | A digital high voltage DC power |
| CN102497126A (en) * | 2011-12-21 | 2012-06-13 | 阳光电源股份有限公司 | Fan converter power unit driving circuit |
| CN202957590U (en) * | 2012-09-04 | 2013-05-29 | 苏州东剑智能科技有限公司 | Short circuit fault rapid isolation and power supply recovery system in power gird |
| CN202975637U (en) * | 2012-12-03 | 2013-06-05 | 哈尔滨九洲电气股份有限公司 | On-off input signal collecting and on-off output signal forwarding device for wind power generation |
| CN104319989A (en) * | 2014-11-14 | 2015-01-28 | 浙江艾罗电源有限公司 | Anti-electromagnetic interference drive circuit with double inverters |
| CN105119478A (en) * | 2015-09-30 | 2015-12-02 | 苏州英威腾电力电子有限公司 | Bypass contactor control panel of power unit |
| CN205487946U (en) * | 2016-01-18 | 2016-08-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Controller of relay |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108667274A (en) * | 2018-05-22 | 2018-10-16 | 青岛海尔智能技术研发有限公司 | The control circuit of driving plate power supply output |
| CN109495096A (en) * | 2018-10-23 | 2019-03-19 | 珠海格力电器股份有限公司 | Solid-state relay driving device, frequency conversion cabinet and solid-state relay driving method thereof |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181101 Address after: 519070, Jinji Hill Road, front hill, Zhuhai, Guangdong Applicant after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Address before: 519070 science and technology building, 789 Jinji Road, Qianshan, Zhuhai, Guangdong Applicant before: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI |
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Application publication date: 20160608 |
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