CN101895219B - Pulse trigger type master control signal level converter and application method thereof - Google Patents
Pulse trigger type master control signal level converter and application method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of crane controllers, and in particular relates to a pulse trigger type master control signal level converter and an application method thereof. A 220V alternating current control signal from a master is subjected to current limiting by R1, R2 and R3 and is rectified by a light emitting diode in a photoelectric coupler so that a square wave signal serving as trigger pulse of a monostable integrated circuit U1 is output between output ends C and E of the photoelectric coupler; and a pin 13 of the integrated circuit U1 outputs high level to switch on a triode T1 so as to generate the trigger pulse once every 20ms, so that the pin 13 of the integrated circuit U1 can output high level constantly. When the master signal disappears, the integrated circuit U1 cannot receive the trigger pulse and outputs low level to switch off the triode T. Thus the conversion from the 220V alternating current level to low voltage direct current level is realized. Due to the adoption of a photoelectric isolator, the alternating current signal side is completely isolated from the direct current level side in voltage. The converter can be used for crane speed regulating controllers, frequency converters special for cranes and the occasions requiring the alternating current voltage-direct current level conversion such as programmable logic controllers (PLC) and the like.
Description
Technical field
The invention belongs to the crane controller technical field, particularly relate to a kind of pulse trigger type master control signal level converter and application process thereof.
Background technology
Existing crane controller adopts master controller to import as control signal usually.The input voltage of master controller is alternating current 220V AC.In order to guarantee handling safety, the input terminal of controller normally adopts+12V or+the 24V direct voltage.The main order adopts signal and being connected of controller a plurality of auxiliary relays as the main level conversion that makes signal.There are following defectives in this kind mode:
1) peripheral distribution is complicated, and repair and maintenance is inconvenient;
2) response speed is slow.Issue a signal to the actuating of relay from main order and receive signal to controller again, time-delay therebetween reaches more than the 200ms usually, is not suitable for the occasion of quick response requirement.
3) reliability is not high.Because relay tip exists oxidation and electric spark galvanic corrosion, has hidden danger such as loose contact, there is shake to produce during contact action simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of pulse trigger type master control signal level converter.
Another object of the present invention is to provide a kind of application process of pulse trigger type master control signal level converter.The present invention is applicable to that crane makes the signal input with the master of speed setting controller, lifting special converter.Simplified the peripheral distribution of lifting electrical control cubicles widely, and improved response speed and reliable in action property, reduced and produce and maintenance cost.
The objective of the invention is to realize through following technical proposals.
Pulse trigger type master control signal level converter of the present invention; It is characterized in that coming an end of the AC signal of autonomous order is that the power supply phase line is connected with sampling resistor R1 one end; The other end of this resistance R 1 is connected with an end of resistance R 2; The other end of this resistance R 2 is connected with resistance R 3, the other end of this resistance R 3 respectively with photoelectrical coupler PC1 in light-emitting diodes tube anode, the negative electrode of diode D1 be connected, the negative electrode of the light-emitting diode among this photoelectrical coupler PC1 the be connected other end of back and the AC signal that comes independently to make of the anode of diode D1 therewith is that zero-power line is connected; Above circuit forms the main input that makes signal
The collector electrode of the triode in the described photoelectrical coupler PC1 is connected with an end of resistance R 4, an end of capacitor C 1,1 pin of integrated circuit U1 respectively; The emitter of the triode in the described photoelectrical coupler PC1 is connected and ground connection with the other end of described capacitor C 1,8 pin of integrated circuit U1 respectively; The other end of described resistance R 4 links to each other with 2,3 pin of an end of resistance R 5, integrated circuit U1 respectively and is connected to power supply VCC; The other end of this resistance R 5 is connected with an end of capacitor C 2,15 pin of integrated circuit U1 respectively; The other end of this capacitor C 2 is connected with 14 pin of integrated circuit U1, and 16 pin of integrated circuit U1 link to each other with an end of capacitor C 3 and are connected to power supply VCC, the other end ground connection of this capacitor C 3; 13 pin of integrated circuit U1 are connected with an end of resistance R 6; The other end of this resistance R 6 is connected with the base stage of triode T1, the grounded emitter of this triode T1, and the collector electrode of this triode T1 is as open circuit output.
The described AC signal that independently makes is the 220V AC signal, and described power supply phase line is a 220V power supply phase line, and described zero-power line is the 220V zero-power line.
A kind of application process of pulse trigger type master control signal level converter; It is characterized in that described pulse trigger type master control signal level converter is designed to element circuit; Make the actual needs of signal that element circuit quantity is set according to main; Each element circuit parallel connection is become master controller, and the output of each element circuit is connected with an input of speed setting controller respectively.
Described master controller is the fourth gear master controller: the master makes zero-bit element circuit, master make 1 grade of positive element circuit, master make 1 grade of anti-element circuit, master make 2 grades of element circuits, master make 3 grades of element circuits, master make 4 grades of element circuits; Totally 6 element circuits; This master makes the output of zero-bit element circuit be connected with the DIO mouth of speed setting controller; The master makes the output of 1 grade of positive element circuit be connected with the DCOM mouth of speed setting controller; The master makes the output of 1 grade of anti-element circuit be connected with the DI1R mouth of speed setting controller; The master makes the output of 2 grades of element circuits be connected with the DI2 mouth of speed setting controller, and the master makes the output of 3 grades of element circuits be connected with the DI3 mouth of speed setting controller, and the master makes the output of 4 grades of element circuits be connected with the DI4 mouth of speed setting controller.
The course of work of the present invention is following: come the 220V AC controling signal of autonomous order, through R1, R2, R3 current limliting, light-emitting diode rectification in the photoelectrical coupler is exported square-wave signal between photoelectric coupler output end C, E.This square-wave signal is as the trigger impulse of monostable integrated circuit U1.Monostable trigger-action circuit hold time for:
Tw＝0.45×R5×C2
It is about 30ms that the parameter of selection R5, C2 makes the Tw that holds time.When triggering signal was arranged, 13 pin of integrated circuit U1 output high level made triode T1 conducting.When the master made signal voltage exist, every 20ms produced a trigger impulse, makes 13 pin of integrated circuit U1 keep the output high level.When the master made blackout, integrated circuit U1 can not receive trigger impulse at Tw in the time, the 13 pin outputs upset of U1, and output low level is ended triode T1.Realized that so promptly 220V exchanges the conversion of level to low-voltage DC level.Owing to adopted photoisolator, AC signal side and DC level side are complete voltage isolation.
The present invention not only can be used for crane speed setting controller, crane special converter, also can be used for the occasion that programmable logic controller (PLC) (PLC) etc. needs alternating voltage-DC level conversion.
The present invention has simplified the peripheral distribution of lifting electrical control cubicles widely, and has improved response speed and reliable in action property, has reduced production and maintenance cost.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a concrete application party block diagram of the present invention.
Embodiment
Specify embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1; Pulse trigger type master control signal level converter of the present invention; It is characterized in that coming an end of the AC signal of autonomous order is that the power supply phase line is connected with sampling resistor R1 one end, and the other end of this resistance R 1 is connected with an end of resistance R 2, and the other end of this resistance R 2 is connected with resistance R 3; The other end of this resistance R 3 respectively with photoelectrical coupler PC1 in light-emitting diodes tube anode, the negative electrode of diode D1 be connected; The negative electrode of the light-emitting diode among this photoelectrical coupler PC1 the be connected other end of back and the AC signal that comes autonomous order of the anode of diode D1 therewith is that zero-power line is connected, and above circuit forms the input that the master makes signal
The collector electrode of the triode in the described photoelectrical coupler PC1 is connected with an end of resistance R 4, an end of capacitor C 1,1 pin of integrated circuit U1 respectively; The emitter of the triode in the described photoelectrical coupler PC1 is connected and ground connection with the other end of described capacitor C 1,8 pin of integrated circuit U1 respectively; The other end of described resistance R 4 links to each other with 2,3 pin of an end of resistance R 5, integrated circuit U1 respectively and is connected to power supply VCC; The other end of this resistance R 5 is connected with an end of capacitor C 2,15 pin of integrated circuit U1 respectively; The other end of this capacitor C 2 is connected with 14 pin of integrated circuit U1, and 16 pin of integrated circuit U1 link to each other with an end of capacitor C 3 and are connected to power supply VCC, the other end ground connection of this capacitor C 3; 13 pin of integrated circuit U1 are connected with an end of resistance R 6; The other end of this resistance R 6 is connected with the base stage of triode T1, the grounded emitter of this triode T1, and the collector electrode of this triode T1 is as open circuit output.
The described AC signal that independently makes is the 220V AC signal, and described power supply phase line is a 220V power supply phase line, and described zero-power line is the 220V zero-power line.
A kind of application process of pulse trigger type master control signal level converter; It is characterized in that described pulse trigger type master control signal level converter is designed to element circuit; Make the actual needs of signal that element circuit quantity is set according to main; Each element circuit parallel connection is become master controller, and the output of each element circuit is connected with an input of speed setting controller respectively.
The course of work of the present invention is following: come the 220V AC controling signal of autonomous order, through R1, R2, R3 current limliting, light-emitting diode rectification in the photoelectrical coupler is exported square-wave signal between photoelectric coupler output end C, E.This square-wave signal is as the trigger impulse of monostable integrated circuit U1.Monostable trigger-action circuit hold time for:
Tw＝0.45×R5×C2
It is about 30ms that the parameter of selection R5, C2 makes the Tw that holds time.When triggering signal was arranged, 13 pin of integrated circuit U1 output high level made triode T1 conducting.When the master made signal voltage exist, every 20ms produced a trigger impulse, makes 13 pin of integrated circuit U1 keep the output high level.When the master made blackout, integrated circuit U1 can not receive trigger impulse at Tw in the time, the 13 pin outputs upset of U1, and output low level is ended triode T1.Realized that so promptly 220V exchanges the conversion of level to low-voltage DC level.Owing to adopted photoisolator, AC signal side and DC level side are complete voltage isolation.
The application implementation example
Fig. 2 has provided an application implementation example of the present invention.The present invention is designed to element circuit, makes the actual needs of signal that element number is set according to main.As having designed for example with the fourth gear master controller in this example: main make zero-bit, main make 1 grade just, main make 1 grade anti-, main make 2 grades, main make 3 grades, mainly make 4 grades, Unit totally 6.
As shown in Figure 2; Described master controller is the fourth gear master controller: the master makes zero-bit element circuit, master make 1 grade of positive element circuit, master make 1 grade of anti-element circuit, master make 2 grades of element circuits, master make 3 grades of element circuits, master make 4 grades of element circuits; Totally 6 element circuits; This master makes the output of zero-bit element circuit be connected with the DIO mouth of speed setting controller; The master makes the output of 1 grade of positive element circuit be connected with the DCOM mouth of speed setting controller, and the master makes the output of 1 grade of anti-element circuit be connected with the DI1R mouth of speed setting controller, and the master makes the output of 2 grades of element circuits be connected with the DI2 mouth of speed setting controller; The master makes the output of 3 grades of element circuits be connected with the DI3 mouth of speed setting controller, and the master makes the output of 4 grades of element circuits be connected with the DI4 mouth of speed setting controller.
The present invention not only can be used for crane speed setting controller, crane special converter, also can be used for the occasion that programmable logic controller (PLC) (PLC) etc. needs alternating voltage-DC level conversion.
Claims (4)
1. pulse trigger type master control signal level converter; It is characterized in that coming an end of the AC signal of autonomous order is that the power supply phase line is connected with sampling resistor R1 one end; The other end of this resistance R 1 is connected with an end of resistance R 2; The other end of this resistance R 2 is connected with resistance R 3, the other end of this resistance R 3 respectively with photoelectrical coupler PC1 in light-emitting diodes tube anode, the negative electrode of diode D1 be connected, the negative electrode of the light-emitting diode among this photoelectrical coupler PC1 the be connected other end of back and the AC signal that comes independently to make of the anode of diode D1 therewith is that zero-power line is connected; Above circuit forms the main input that makes signal
The collector electrode of the triode in the described photoelectrical coupler PC1 is that trigger 1 triggering input is connected with an end of resistance R 4, an end of capacitor C 1,1 pin of integrated circuit U1 respectively; The emitter of the triode in the described photoelectrical coupler PC1 is connected and ground connection with the other end of described capacitor C 1,8 pin of integrated circuit U1 respectively; The other end of described resistance R 4 is that trigger 2 triggers input and 3 pin and promptly directly resets and link to each other and be connected to power supply VCC with 2 pin of an end of resistance R 5, integrated circuit U1 respectively; The other end of this resistance R 5 is that trigger 2 outside capacitance-resistances are connected and are connected with 15 pin of an end of capacitor C 2, integrated circuit U1 respectively; The other end of this capacitor C 2 is that trigger 2 external capacitors are connected with 14 pin of integrated circuit U1; 16 pin of integrated circuit U1 are that power supply links to each other with an end of capacitor C 3 and is connected to power supply VCC; The other end ground connection of this capacitor C 3,13 pin of integrated circuit U1 are that trigger 1 output is connected with an end of resistance R 6, and the other end of this resistance R 6 is connected with the base stage of triode T1; The grounded emitter of this triode T1, the collector electrode of this triode T1 is as open circuit output.
2. pulse trigger type master control signal level converter according to claim 1; It is characterized in that the described AC signal that independently makes is the 220V AC signal; Described power supply phase line is a 220V power supply phase line, and described zero-power line is the 220V zero-power line.
3. the application process of a pulse trigger type master control signal level converter according to claim 1; It is characterized in that described pulse trigger type master control signal level converter is designed to element circuit; Make the actual needs of signal that element circuit quantity is set according to main; Each element circuit parallel connection is become master controller, and the output of each element circuit is connected with an input of speed setting controller respectively.
4. the application process of pulse trigger type master control signal level converter according to claim 3; It is characterized in that described master controller is the fourth gear master controller: the master makes zero-bit element circuit, master make 1 grade of positive element circuit, master make 1 grade of anti-element circuit, master make 2 grades of element circuits, master make 3 grades of element circuits, master make 4 grades of element circuits; Totally 6 element circuits; This master makes the output of zero-bit element circuit be connected with the DIO mouth of speed setting controller; The master makes the output of 1 grade of positive element circuit be connected with the DCOM mouth of speed setting controller; The master makes the output of 1 grade of anti-element circuit be connected with the DI1R mouth of speed setting controller; The master makes the output of 2 grades of element circuits be connected with the DI2 mouth of speed setting controller, and the master makes the output of 3 grades of element circuits be connected with the DI3 mouth of speed setting controller, and the master makes the output of 4 grades of element circuits be connected with the DI4 mouth of speed setting controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102329566A CN101895219B (en) | 2010-07-22 | 2010-07-22 | Pulse trigger type master control signal level converter and application method thereof |
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| CN2010102329566A CN101895219B (en) | 2010-07-22 | 2010-07-22 | Pulse trigger type master control signal level converter and application method thereof |
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| CN101895219B true CN101895219B (en) | 2012-08-08 |
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| CN102773709A (en) * | 2012-07-27 | 2012-11-14 | 齐齐哈尔齐一机工业产品有限公司 | Combined worktable of numerical control turning and milling machine tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5444408A (en) * | 1993-12-13 | 1995-08-22 | Micron Technology, Inc. | Active pull-up voltage spike reducer |
| CN1206950A (en) * | 1998-05-29 | 1999-02-03 | 清华大学 | Dring power source for activating piezoelectric device |
| CN1787351A (en) * | 2005-11-22 | 2006-06-14 | 福建龙净环保股份有限公司 | Resonance switch driving controlling and protecting circuit |
| CN201742314U (en) * | 2010-07-22 | 2011-02-09 | 鞍山起重控制设备有限公司 | Pulse triggering master control signal level shifter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5710531A (en) * | 1980-06-20 | 1982-01-20 | Toshiba Corp | Level conversion circuit |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5444408A (en) * | 1993-12-13 | 1995-08-22 | Micron Technology, Inc. | Active pull-up voltage spike reducer |
| CN1206950A (en) * | 1998-05-29 | 1999-02-03 | 清华大学 | Dring power source for activating piezoelectric device |
| CN1787351A (en) * | 2005-11-22 | 2006-06-14 | 福建龙净环保股份有限公司 | Resonance switch driving controlling and protecting circuit |
| CN201742314U (en) * | 2010-07-22 | 2011-02-09 | 鞍山起重控制设备有限公司 | Pulse triggering master control signal level shifter |
Non-Patent Citations (1)
| Title |
|---|
| JP昭57-10531A 1982.01.20 |
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